Merge pull request #132 from kkawakam/2.0
2.0.0-alpha
diff --git a/.travis.yml b/.travis.yml
index af46809..711713e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,16 +1,5 @@
+sudo: false
language: rust
-rust:
- - stable
- - beta
- - nightly
script:
- cargo build --verbose
- cargo test --verbose
- - cargo doc
-after_success: |
- [ $TRAVIS_BRANCH = master ] &&
- [ $TRAVIS_PULL_REQUEST = false ] &&
- bash deploy-docs.sh
-env:
- global:
- secure: "XxaPXHiVplTwMaAytYC0VQR/nNnm7SJVzXiUuaVEjssHip0Uje/4f3vGqtJjnD70FfxwNWQKiSYOcbYjWPlsJeANRt4ZoCsRt5eLGUZ+wH79n1fOkp5EIpFT/isjCB51A4n8PRUvuWfQ2OtNNeGLL6akMxt19sHdXoiQkLOe338="
diff --git a/Cargo.toml b/Cargo.toml
index ec6586a..9b940d8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
[package]
name = "rustyline"
-version = "1.0.0"
+version = "2.0.0-alpha"
authors = ["Katsu Kawakami <kkawa1570@gmail.com>"]
description = "Rustyline, a readline implementation based on Antirez's Linenoise"
documentation = "http://docs.rs/rustyline"
@@ -15,18 +15,17 @@
appveyor = { repository = "kkawakam/rustyline" }
[dependencies]
-libc = "0.2.7"
-log = "0.3"
-unicode-width = "0.1.3"
+libc = "0.2"
+log = "0.4"
+unicode-width = "0.1"
unicode-segmentation = "1.0"
-encode_unicode = "0.1.3"
[target.'cfg(unix)'.dependencies]
-nix = "0.8"
+nix = "0.11"
[target.'cfg(windows)'.dependencies]
-winapi = "0.2"
-kernel32-sys = "0.2"
+winapi = { version = "0.3", features = ["consoleapi", "handleapi", "minwindef", "processenv", "winbase", "wincon", "winuser"] }
[dev-dependencies]
-tempdir = "0.3.4"
+tempdir = "0.3"
+assert_matches = "1.2"
diff --git a/README.md b/README.md
index f031d1b..99f345b 100644
--- a/README.md
+++ b/README.md
@@ -1,28 +1,21 @@
# RustyLine
[](https://travis-ci.org/kkawakam/rustyline)
-[](https://ci.appveyor.com/project/kkawakam/rustyline/branch/master)
-[](https://clippy.bashy.io/github/kkawakam/rustyline/master/log)
+[](https://ci.appveyor.com/project/kkawakam/rustyline/branch/master)
+[](https://deps.rs/repo/github/kkawakam/rustyline)
[](https://crates.io/crates/rustyline)
+[](https://docs.rs/rustyline)
Readline implementation in Rust that is based on [Antirez' Linenoise](https://github.com/antirez/linenoise)
-[Documentation (Releases)](https://docs.rs/rustyline)
-
-[Documentation (Master)](https://kkawakam.github.io/rustyline/rustyline/)
-
**Supported Platforms**
-* Linux
+* Unix (tested on FreeBSD, Linux and macOS)
* Windows
* cmd.exe
* Powershell
-**Note**: Powershell ISE is not supported, check [issue #56](https://github.com/kkawakam/rustyline/issues/56)
-
-## Build
-This project uses Cargo and Rust stable
-```bash
-cargo build --release
-```
+**Note**:
+* Powershell ISE is not supported, check [issue #56](https://github.com/kkawakam/rustyline/issues/56)
+* Mintty (Cygwin/Mingw) is not supported
## Example
```rust
@@ -34,14 +27,14 @@
fn main() {
// `()` can be used when no completer is required
let mut rl = Editor::<()>::new();
- if let Err(_) = rl.load_history("history.txt") {
+ if rl.load_history("history.txt").is_err() {
println!("No previous history.");
}
loop {
let readline = rl.readline(">> ");
match readline {
Ok(line) => {
- rl.add_history_entry(&line);
+ rl.add_history_entry(line.as_ref());
println!("Line: {}", line);
},
Err(ReadlineError::Interrupted) => {
@@ -78,8 +71,9 @@
- Filename completion
- History search ([Searching for Commands in the History](http://cnswww.cns.cwru.edu/php/chet/readline/readline.html#SEC8))
- Kill ring ([Killing Commands](http://cnswww.cns.cwru.edu/php/chet/readline/readline.html#IDX3))
- - Multi line mode
+ - Multi line mode (line wrapping)
- Word commands
+ - Hints
## Actions
@@ -102,6 +96,7 @@
Ctrl-W | Delete word leading up to cursor (using white space as a word boundary)
Ctrl-Y | Paste from Yank buffer
Ctrl-Z | Suspend (unix only)
+Ctrl-_ | Undo
### Emacs mode (default mode)
@@ -117,6 +112,7 @@
Ctrl-L | Clear screen
Ctrl-N, Down | Next match from history
Ctrl-P, Up | Previous match from history
+Ctrl-X Ctrl-U | Undo
Ctrl-Y | Paste from Yank buffer (Meta-Y to paste next yank instead)
Meta-< | Move to first entry in history
Meta-> | Move to last entry in history
@@ -169,6 +165,7 @@
S | Change current line (equivalent to 0c$)
t<char> | Move right to the next occurance of `char`, then one char backward
T<char> | Move left to the previous occurance of `char`, then one char forward
+u | Undo
w | Move one word or token right
W | Move one non-blank word right
x | Delete a single character under the cursor
@@ -187,12 +184,6 @@
[Terminal codes (ANSI/VT100)](http://wiki.bash-hackers.org/scripting/terminalcodes)
-## ToDo
-
- - Undos
- - Read input with timeout to properly handle single ESC key
- - expose an API callable from C
-
## Wine
```sh
@@ -214,10 +205,24 @@
## Similar projects
- - [copperline](https://github.com/srijs/rust-copperline) (Rust)
- - [linefeed](https://github.com/murarth/linefeed) (Rust)
- - [liner](https://github.com/MovingtoMars/liner) (Rust)
- - [linenoise-ng](https://github.com/arangodb/linenoise-ng) (C++)
- - [liner](https://github.com/peterh/liner) (Go)
- - [readline](https://github.com/chzyer/readline) (Go)
- - [haskeline](https://github.com/judah/haskeline) (Haskell)
+Library | Lang | OS | Term | Unicode | History | Completion | Keymap | Kill Ring | Undo | Colors | Hint/Auto suggest |
+-------- | ---- | -- | ---- | ------- | ------- | ---------- | ------- | --------- | ---- | ------ | ----------------- |
+[Haskeline][] | Haskell | Ux/Win | Any | Yes | Yes | any | Emacs/Vi/conf | Yes | Yes | ? | ? |
+[Linenoise][] | C | Ux | ANSI | No | Yes | only line | Emacs | No | No | Ux | Yes |
+[Linenoise-ng][] | C | Ux/Win | ANSI | Yes | Yes | only line | Emacs | Yes | No | ? | ? |
+[Linefeed][] | Rust | Ux/Win | Any | | Yes | any | Emacs/conf | Yes | No | ? | No |
+[Liner][] | Rust | Ux | ANSI | | No inc search | only word | Emacs/Vi/prog | No | Yes | Ux | History based |
+[Prompt-toolkit][] | Python | Ux/Win | ANSI | Yes | Yes | any | Emacs/Vi/conf | Yes | Yes | Ux/Win | Yes |
+[Rb-readline][] | Ruby | Ux/Win | ANSI | Yes | Yes | only word | Emacs/Vi/conf | Yes | Yes | ? | No |
+[Replxx][] | C/C++ | Ux/Win | ANSI | Yes | Yes | only line | Emacs | Yes | No | Ux/Win | Yes |
+Rustyline | Rust | Ux/Win | ANSI | Yes | Yes | any | Emacs/Vi/bind | Yes | Yes | Ux/Win 10+ | Yes |
+
+[Haskeline]: https://github.com/judah/haskeline
+[Linefeed]: https://github.com/murarth/linefeed
+[Linenoise]: https://github.com/antirez/linenoise
+[Linenoise-ng]: https://github.com/arangodb/linenoise-ng
+[Liner]: https://github.com/MovingtoMars/liner
+[Prompt-toolkit]: https://github.com/jonathanslenders/python-prompt-toolkit
+[Rb-readline]: https://github.com/ConnorAtherton/rb-readline
+[Replxx]: https://github.com/AmokHuginnsson/replxx
+
diff --git a/TODO.md b/TODO.md
new file mode 100644
index 0000000..948d42b
--- /dev/null
+++ b/TODO.md
@@ -0,0 +1,79 @@
+API
+- [ ] expose an API callable from C
+
+Async (#126)
+
+Bell
+- [ ] bell-style
+
+Color
+- [x] ANSI Colors & Windows 10+
+- [ ] ANSI Colors & Windows <10 (https://docs.rs/console/0.6.1/console/fn.strip_ansi_codes.html ?)
+- [ ] Syntax highlighting
+- [ ] clicolors spec (https://docs.rs/console/0.6.1/console/fn.colors_enabled.html)
+
+Completion
+- [X] Quoted path
+- [ ] Windows escape/unescape space in path
+- [ ] file completion & escape/unescape (#106)
+- [ ] file completion & tilde (#62)
+- [ ] display versus replacement
+- [ ] composite/alternate completer (if the current completer returns nothing, try the next one)
+
+Config
+- [ ] Maximum buffer size for the line read
+
+Cursor
+- [ ] insert versus overwrite versus command mode
+- [ ] In Vi command mode, prevent user from going to end of line. (#94)
+
+Grapheme
+- [ ] grapheme & input auto-wrap are buggy
+
+Hints Callback
+- [x] Not implemented on windows
+
+History
+- [ ] Move to the history line n
+- [ ] historyFile: Where to read/write the history at the start and end of
+each line input session.
+- [ ] append_history
+- [ ] history_truncate_file
+
+Input
+- [ ] Password input (#58)
+- [ ] quoted insert (#65)
+- [ ] Overwrite mode (em-toggle-overwrite, vi-replace-mode, rl_insert_mode)
+- [ ] Encoding
+
+Mouse
+- [ ] Mouse support
+
+Movement
+- [ ] Move to the corresponding opening/closing bracket
+
+Redo
+- [X] redo substitue
+
+Repeat
+- [x] dynamic prompt (arg: ?)
+- [ ] transpose chars
+
+Syntax
+- [ ] syntax specific tokenizer/parser
+- [ ] highlighting
+
+Undo
+- [ ] Merge consecutive Replace
+- [X] Undo group
+- [ ] Undo all changes made to this line.
+- [X] Kill+Insert (substitute/replace)
+- [X] Repeated undo `Undo(RepeatCount)`
+
+Unix
+- [ ] Terminfo (https://github.com/Stebalien/term)
+
+Windows
+- [ ] is_atty is not working with cygwin/msys (https://github.com/softprops/atty works but then how to make `enable_raw_mode` works ?)
+- [X] UTF-16 surrogate pair
+- [ ] handle ansi escape code (https://docs.rs/console/0.6.1/console/fn.strip_ansi_codes.html ?)
diff --git a/appveyor.yml b/appveyor.yml
index 8934d30..4506f3a 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,14 +1,9 @@
environment:
- matrix:
- - TARGET: 1.16.0-x86_64-pc-windows-msvc
- - TARGET: 1.16.0-x86_64-pc-windows-gnu
- - TARGET: beta-x86_64-pc-windows-msvc
- - TARGET: beta-x86_64-pc-windows-gnu
+ TARGET: x86_64-pc-windows-msvc
install:
- - ps: Start-FileDownload "https://static.rust-lang.org/dist/rust-${env:TARGET}.exe"
- - rust-%TARGET%.exe /VERYSILENT /NORESTART /DIR="C:\Program Files (x86)\Rust"
- - SET PATH=%PATH%;C:\Program Files (x86)\Rust\bin
- - SET PATH=%PATH%;C:\MinGW\bin
+ - appveyor DownloadFile https://win.rustup.rs/ -FileName rustup-init.exe
+ - rustup-init -yv --default-toolchain stable --default-host %TARGET%
+ - set PATH=%PATH%;%USERPROFILE%\.cargo\bin
- rustc -V
- cargo -V
diff --git a/deploy-docs.sh b/deploy-docs.sh
deleted file mode 100755
index efd5a56..0000000
--- a/deploy-docs.sh
+++ /dev/null
@@ -1,21 +0,0 @@
-#!/bin/bash
-
-rev=$(git rev-parse --short HEAD)
-
-cd target/doc
-
-echo '<meta http-equiv=refresh content=0;url=rustyline/index.html>' > index.html
-
-git init
-git config user.name "Katsu Kawakami"
-git config user.email "kkawa1570@gmail.com"
-
-git remote add upstream "https://$GH_TOKEN@github.com/kkawakam/rustyline.git"
-git fetch upstream
-git push upstream --delete gh-pages > /dev/null 2>&1
-
-touch .
-
-git add -A .
-git commit -m "rebuild pages at ${rev}"
-git push -q upstream HEAD:gh-pages > /dev/null 2>&1
diff --git a/examples/example.rs b/examples/example.rs
index 8f02337..4e9c407 100644
--- a/examples/example.rs
+++ b/examples/example.rs
@@ -1,12 +1,12 @@
extern crate log;
extern crate rustyline;
-use std::io::{self, Write};
-use log::{LogRecord, LogLevel, LogLevelFilter, LogMetadata, SetLoggerError};
+use log::{Level, LevelFilter, Metadata, Record, SetLoggerError};
use rustyline::completion::FilenameCompleter;
use rustyline::error::ReadlineError;
-use rustyline::{Cmd, Config, CompletionType, Editor, EditMode, KeyPress};
+use rustyline::hint::Hinter;
+use rustyline::{Cmd, CompletionType, Config, EditMode, Editor, KeyPress};
// On unix platforms you can use ANSI escape sequences
#[cfg(unix)]
@@ -17,6 +17,22 @@
#[cfg(windows)]
static PROMPT: &'static str = ">> ";
+struct Hints {}
+
+impl Hinter for Hints {
+ fn hint(&self, line: &str, _pos: usize) -> Option<String> {
+ if line == "hello" {
+ if cfg!(target_os = "windows") {
+ Some(" World".to_owned())
+ } else {
+ Some(" \x1b[1mWorld\x1b[m".to_owned())
+ }
+ } else {
+ None
+ }
+ }
+}
+
fn main() {
init_logger().is_ok();
let config = Config::builder()
@@ -26,7 +42,7 @@
.build();
let c = FilenameCompleter::new();
let mut rl = Editor::with_config(config);
- rl.set_completer(Some(c));
+ rl.set_helper(Some((c, Hints {})));
rl.bind_sequence(KeyPress::Meta('N'), Cmd::HistorySearchForward);
rl.bind_sequence(KeyPress::Meta('P'), Cmd::HistorySearchBackward);
if rl.load_history("history.txt").is_err() {
@@ -56,23 +72,25 @@
rl.save_history("history.txt").unwrap();
}
+static LOGGER: Logger = Logger;
struct Logger;
impl log::Log for Logger {
- fn enabled(&self, metadata: &LogMetadata) -> bool {
- metadata.level() <= LogLevel::Debug
+ fn enabled(&self, metadata: &Metadata) -> bool {
+ metadata.level() <= Level::Debug
}
- fn log(&self, record: &LogRecord) {
+ fn log(&self, record: &Record) {
if self.enabled(record.metadata()) {
- writeln!(io::stderr(), "{} - {}", record.level(), record.args()).unwrap();
+ eprintln!("{} - {}", record.level(), record.args());
}
}
+
+ fn flush(&self) {}
}
fn init_logger() -> Result<(), SetLoggerError> {
- log::set_logger(|max_log_level| {
- max_log_level.set(LogLevelFilter::Info);
- Box::new(Logger)
- })
+ try!(log::set_logger(&LOGGER));
+ log::set_max_level(LevelFilter::Info);
+ Ok(())
}
diff --git a/index.html b/index.html
deleted file mode 100644
index 269d4c6..0000000
--- a/index.html
+++ /dev/null
@@ -1 +0,0 @@
-<meta http-equiv=refresh content=0;url=rustyline/index.html>
diff --git a/rustfmt.toml b/rustfmt.toml
index 6496add..34977e4 100644
--- a/rustfmt.toml
+++ b/rustfmt.toml
@@ -1,3 +1,3 @@
-reorder_imports = false
-normalise_comments = false
-write_mode = "Overwrite"
\ No newline at end of file
+wrap_comments = true
+format_strings = true
+error_on_unformatted = false
diff --git a/src/char_iter.rs b/src/char_iter.rs
deleted file mode 100644
index 1866dbd..0000000
--- a/src/char_iter.rs
+++ /dev/null
@@ -1,111 +0,0 @@
-//! An iterator over the `char`s of a reader.
-//!
-//! A copy of the unstable code from the stdlib's std::io::Read::chars.
-//! TODO: Remove this once [Read::chars](https://github.com/rust-lang/rust/issues/27802) has been stabilized
-
-use std::error;
-use std::fmt;
-use std::io;
-use std::io::Read;
-use std::str;
-
-pub fn chars<R: Read>(read: R) -> Chars<R>
- where R: Sized
-{
- Chars { inner: read }
-}
-
-// https://tools.ietf.org/html/rfc3629
-static UTF8_CHAR_WIDTH: [u8; 256] = [
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x1F
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x3F
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x5F
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x7F
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0x9F
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0xBF
- 0,0,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
- 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, // 0xDF
- 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, // 0xEF
- 4,4,4,4,4,0,0,0,0,0,0,0,0,0,0,0, // 0xFF
-];
-
-/// Given a first byte, determine how many bytes are in this UTF-8 character
-#[inline]
-fn utf8_char_width(b: u8) -> usize {
- return UTF8_CHAR_WIDTH[b as usize] as usize;
-}
-
-pub struct Chars<R> {
- inner: R,
-}
-
-#[derive(Debug)]
-pub enum CharsError {
- NotUtf8,
- Other(io::Error),
-}
-
-impl<R: Read> Iterator for Chars<R> {
- type Item = Result<char, CharsError>;
-
- fn next(&mut self) -> Option<Result<char, CharsError>> {
- let mut buf = [0];
- let first_byte = match self.inner.read(&mut buf) {
- Ok(0) => return None,
- Ok(..) => buf[0],
- Err(e) => return Some(Err(CharsError::Other(e))),
- };
- let width = utf8_char_width(first_byte);
- if width == 1 {
- return Some(Ok(first_byte as char));
- }
- if width == 0 {
- return Some(Err(CharsError::NotUtf8));
- }
- let mut buf = [first_byte, 0, 0, 0];
- {
- let mut start = 1;
- while start < width {
- match self.inner.read(&mut buf[start..width]) {
- Ok(0) => return Some(Err(CharsError::NotUtf8)),
- Ok(n) => start += n,
- Err(e) => return Some(Err(CharsError::Other(e))),
- }
- }
- }
- Some(match str::from_utf8(&buf[..width]).ok() {
- Some(s) => Ok(s.chars().next().unwrap()),
- None => Err(CharsError::NotUtf8),
- })
- }
-}
-
-impl error::Error for CharsError {
- fn description(&self) -> &str {
- match *self {
- CharsError::NotUtf8 => "invalid utf8 encoding",
- CharsError::Other(ref e) => error::Error::description(e),
- }
- }
- fn cause(&self) -> Option<&error::Error> {
- match *self {
- CharsError::NotUtf8 => None,
- CharsError::Other(ref e) => e.cause(),
- }
- }
-}
-
-impl fmt::Display for CharsError {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- match *self {
- CharsError::NotUtf8 => "byte stream did not contain valid utf8".fmt(f),
- CharsError::Other(ref e) => e.fmt(f),
- }
- }
-}
diff --git a/src/completion.rs b/src/completion.rs
index 9c07c4d..c6e65ed 100644
--- a/src/completion.rs
+++ b/src/completion.rs
@@ -8,14 +8,17 @@
use line_buffer::LineBuffer;
// TODO: let the implementers choose/find word boudaries ???
-// (line, pos) is like (rl_line_buffer, rl_point) to make contextual completion ("select t.na| from tbl as t")
-// TOOD: make &self &mut self ???
+// (line, pos) is like (rl_line_buffer, rl_point) to make contextual completion
+// ("select t.na| from tbl as t")
+// TODO: make &self &mut self ???
/// To be called for tab-completion.
pub trait Completer {
/// Takes the currently edited `line` with the cursor `pos`ition and
- /// returns the start position and the completion candidates for the partial word to be completed.
- /// "ls /usr/loc" => Ok((3, vec!["/usr/local/"]))
+ /// returns the start position and the completion candidates for the
+ /// partial word to be completed.
+ ///
+ /// ("ls /usr/loc", 11) => Ok((3, vec!["/usr/local/"]))
fn complete(&self, line: &str, pos: usize) -> Result<(usize, Vec<String>)>;
/// Updates the edited `line` with the `elected` candidate.
fn update(&self, line: &mut LineBuffer, start: usize, elected: &str) {
@@ -26,7 +29,7 @@
impl Completer for () {
fn complete(&self, _line: &str, _pos: usize) -> Result<(usize, Vec<String>)> {
- Ok((0, Vec::new()))
+ Ok((0, Vec::with_capacity(0)))
}
fn update(&self, _line: &mut LineBuffer, _start: usize, _elected: &str) {
unreachable!()
@@ -63,23 +66,34 @@
/// A `Completer` for file and folder names.
pub struct FilenameCompleter {
break_chars: BTreeSet<char>,
+ double_quotes_special_chars: BTreeSet<char>,
}
+// rl_basic_word_break_characters, rl_completer_word_break_characters
#[cfg(unix)]
-static DEFAULT_BREAK_CHARS: [char; 18] = [' ', '\t', '\n', '"', '\\', '\'', '`', '@', '$', '>',
- '<', '=', ';', '|', '&', '{', '(', '\0'];
+static DEFAULT_BREAK_CHARS: [char; 18] = [
+ ' ', '\t', '\n', '"', '\\', '\'', '`', '@', '$', '>', '<', '=', ';', '|', '&', '{', '(', '\0',
+];
#[cfg(unix)]
static ESCAPE_CHAR: Option<char> = Some('\\');
// Remove \ to make file completion works on windows
#[cfg(windows)]
-static DEFAULT_BREAK_CHARS: [char; 17] = [' ', '\t', '\n', '"', '\'', '`', '@', '$', '>', '<',
- '=', ';', '|', '&', '{', '(', '\0'];
+static DEFAULT_BREAK_CHARS: [char; 17] = [
+ ' ', '\t', '\n', '"', '\'', '`', '@', '$', '>', '<', '=', ';', '|', '&', '{', '(', '\0',
+];
#[cfg(windows)]
static ESCAPE_CHAR: Option<char> = None;
+// In double quotes, not all break_chars need to be escaped
+// https://www.gnu.org/software/bash/manual/html_node/Double-Quotes.html
+static DOUBLE_QUOTES_SPECIAL_CHARS: [char; 4] = ['"', '$', '\\', '`'];
+
impl FilenameCompleter {
pub fn new() -> FilenameCompleter {
- FilenameCompleter { break_chars: DEFAULT_BREAK_CHARS.iter().cloned().collect() }
+ FilenameCompleter {
+ break_chars: DEFAULT_BREAK_CHARS.iter().cloned().collect(),
+ double_quotes_special_chars: DOUBLE_QUOTES_SPECIAL_CHARS.iter().cloned().collect(),
+ }
}
}
@@ -91,9 +105,25 @@
impl Completer for FilenameCompleter {
fn complete(&self, line: &str, pos: usize) -> Result<(usize, Vec<String>)> {
- let (start, path) = extract_word(line, pos, ESCAPE_CHAR, &self.break_chars);
- let path = unescape(path, ESCAPE_CHAR);
- let matches = try!(filename_complete(&path, ESCAPE_CHAR, &self.break_chars));
+ let (start, path, esc_char, break_chars) =
+ if let Some((idx, double_quote)) = find_unclosed_quote(&line[..pos]) {
+ let start = idx + 1;
+ if double_quote {
+ (
+ start,
+ unescape(&line[start..pos], ESCAPE_CHAR),
+ ESCAPE_CHAR,
+ &self.double_quotes_special_chars,
+ )
+ } else {
+ (start, Borrowed(&line[start..pos]), None, &self.break_chars)
+ }
+ } else {
+ let (start, path) = extract_word(line, pos, ESCAPE_CHAR, &self.break_chars);
+ let path = unescape(path, ESCAPE_CHAR);
+ (start, path, ESCAPE_CHAR, &self.break_chars)
+ };
+ let matches = try!(filename_complete(&path, esc_char, break_chars));
Ok((start, matches))
}
}
@@ -124,16 +154,13 @@
/// Escape any `break_chars` in `input` string with `esc_char`.
/// For example, '/User Information' becomes '/User\ Information'
-/// when space is a breaking char and '\' the escape char.
+/// when space is a breaking char and '\\' the escape char.
pub fn escape(input: String, esc_char: Option<char>, break_chars: &BTreeSet<char>) -> String {
if esc_char.is_none() {
return input;
}
let esc_char = esc_char.unwrap();
- let n = input
- .chars()
- .filter(|c| break_chars.contains(c))
- .count();
+ let n = input.chars().filter(|c| break_chars.contains(c)).count();
if n == 0 {
return input;
}
@@ -148,10 +175,11 @@
result
}
-fn filename_complete(path: &str,
- esc_char: Option<char>,
- break_chars: &BTreeSet<char>)
- -> Result<Vec<String>> {
+fn filename_complete(
+ path: &str,
+ esc_char: Option<char>,
+ break_chars: &BTreeSet<char>,
+) -> Result<Vec<String>> {
use std::env::{current_dir, home_dir};
let sep = path::MAIN_SEPARATOR;
@@ -202,11 +230,12 @@
/// try to find backward the start of a word.
/// Return (0, `line[..pos]`) if no break char has been found.
/// Return the word and its start position (idx, `line[idx..pos]`) otherwise.
-pub fn extract_word<'l>(line: &'l str,
- pos: usize,
- esc_char: Option<char>,
- break_chars: &BTreeSet<char>)
- -> (usize, &'l str) {
+pub fn extract_word<'l>(
+ line: &'l str,
+ pos: usize,
+ esc_char: Option<char>,
+ break_chars: &BTreeSet<char>,
+) -> (usize, &'l str) {
let line = &line[..pos];
if line.is_empty() {
return (0, line);
@@ -247,8 +276,10 @@
for (i, c1) in candidates.iter().enumerate().take(candidates.len() - 1) {
let b1 = c1.as_bytes();
let b2 = candidates[i + 1].as_bytes();
- if b1.len() <= longest_common_prefix || b2.len() <= longest_common_prefix ||
- b1[longest_common_prefix] != b2[longest_common_prefix] {
+ if b1.len() <= longest_common_prefix
+ || b2.len() <= longest_common_prefix
+ || b1[longest_common_prefix] != b2[longest_common_prefix]
+ {
break 'o;
}
}
@@ -263,6 +294,61 @@
Some(&candidates[0][0..longest_common_prefix])
}
+#[derive(PartialEq)]
+enum ScanMode {
+ DoubleQuote,
+ Escape,
+ EscapeInDoubleQuote,
+ Normal,
+ SingleQuote,
+}
+
+/// try to find an unclosed single/double quote in `s`.
+/// Return `None` if no unclosed quote is found.
+/// Return the unclosed quote position and if it is a double quote.
+fn find_unclosed_quote(s: &str) -> Option<(usize, bool)> {
+ let char_indices = s.char_indices();
+ let mut mode = ScanMode::Normal;
+ let mut quote_index = 0;
+ for (index, char) in char_indices {
+ match mode {
+ ScanMode::DoubleQuote => {
+ if char == '"' {
+ mode = ScanMode::Normal;
+ } else if char == '\\' {
+ mode = ScanMode::EscapeInDoubleQuote;
+ }
+ }
+ ScanMode::Escape => {
+ mode = ScanMode::Normal;
+ }
+ ScanMode::EscapeInDoubleQuote => {
+ mode = ScanMode::DoubleQuote;
+ }
+ ScanMode::Normal => {
+ if char == '"' {
+ mode = ScanMode::DoubleQuote;
+ quote_index = index;
+ } else if char == '\\' && cfg!(not(windows)) {
+ mode = ScanMode::Escape;
+ } else if char == '\'' && cfg!(not(windows)) {
+ mode = ScanMode::SingleQuote;
+ quote_index = index;
+ }
+ }
+ ScanMode::SingleQuote => {
+ if char == '\'' {
+ mode = ScanMode::Normal;
+ } // no escape in single quotes
+ }
+ };
+ }
+ if ScanMode::DoubleQuote == mode || ScanMode::SingleQuote == mode {
+ return Some((quote_index, ScanMode::DoubleQuote == mode));
+ }
+ None
+}
+
#[cfg(test)]
mod tests {
use std::collections::BTreeSet;
@@ -271,11 +357,15 @@
pub fn extract_word() {
let break_chars: BTreeSet<char> = super::DEFAULT_BREAK_CHARS.iter().cloned().collect();
let line = "ls '/usr/local/b";
- assert_eq!((4, "/usr/local/b"),
- super::extract_word(line, line.len(), Some('\\'), &break_chars));
+ assert_eq!(
+ (4, "/usr/local/b"),
+ super::extract_word(line, line.len(), Some('\\'), &break_chars)
+ );
let line = "ls /User\\ Information";
- assert_eq!((3, "/User\\ Information"),
- super::extract_word(line, line.len(), Some('\\'), &break_chars));
+ assert_eq!(
+ (3, "/User\\ Information"),
+ super::extract_word(line, line.len(), Some('\\'), &break_chars)
+ );
}
#[test]
@@ -292,8 +382,10 @@
pub fn escape() {
let break_chars: BTreeSet<char> = super::DEFAULT_BREAK_CHARS.iter().cloned().collect();
let input = String::from("/usr/local/b");
- assert_eq!(input.clone(),
- super::escape(input, Some('\\'), &break_chars));
+ assert_eq!(
+ input.clone(),
+ super::escape(input, Some('\\'), &break_chars)
+ );
let input = String::from("/User Information");
let result = String::from("/User\\ Information");
assert_eq!(result, super::escape(input, Some('\\'), &break_chars));
@@ -333,4 +425,17 @@
let lcp = super::longest_common_prefix(&candidates);
assert_eq!(Some("f"), lcp);
}
+
+ #[test]
+ pub fn find_unclosed_quote() {
+ assert_eq!(None, super::find_unclosed_quote("ls /etc"));
+ assert_eq!(
+ Some((3, true)),
+ super::find_unclosed_quote("ls \"User Information")
+ );
+ assert_eq!(
+ None,
+ super::find_unclosed_quote("ls \"/User Information\" /etc")
+ );
+ }
}
diff --git a/src/config.rs b/src/config.rs
index 3be614c..d1dbc42 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,20 +1,25 @@
//! Customize line editor
use std::default::Default;
+/// User preferences
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub struct Config {
/// Maximum number of entries in History.
- max_history_size: usize,
+ max_history_size: usize, // history_max_entries
history_duplicates: HistoryDuplicates,
history_ignore_space: bool,
completion_type: CompletionType,
/// When listing completion alternatives, only display
/// one screen of possibilities at a time.
completion_prompt_limit: usize,
- /// Duration (milliseconds) Rustyline will wait for a character when reading an ambiguous key sequence.
+ /// Duration (milliseconds) Rustyline will wait for a character when
+ /// reading an ambiguous key sequence.
keyseq_timeout: i32,
- // Emacs or Vi mode
+ /// Emacs or Vi mode
edit_mode: EditMode,
+ /// If true, each nonblank line returned by `readline` will be
+ /// automatically added to the history.
+ auto_add_history: bool,
}
impl Config {
@@ -27,13 +32,17 @@
self.max_history_size
}
- /// Tell if lines which match the previous history entry are saved or not in the history list.
+ /// Tell if lines which match the previous history entry are saved or not
+ /// in the history list.
+ ///
/// By default, they are ignored.
pub fn history_duplicates(&self) -> HistoryDuplicates {
self.history_duplicates
}
- /// Tell if lines which begin with a space character are saved or not in the history list.
+ /// Tell if lines which begin with a space character are saved or not in
+ /// the history list.
+ ///
/// By default, they are saved.
pub fn history_ignore_space(&self) -> bool {
self.history_ignore_space
@@ -54,6 +63,13 @@
pub fn edit_mode(&self) -> EditMode {
self.edit_mode
}
+
+ /// Tell if lines are automatically added to the history.
+ ///
+ /// By default, they are not.
+ pub fn auto_add_history(&self) -> bool {
+ self.auto_add_history
+ }
}
impl Default for Config {
@@ -64,8 +80,9 @@
history_ignore_space: false,
completion_type: CompletionType::Circular, // TODO Validate
completion_prompt_limit: 100,
- keyseq_timeout: 500,
+ keyseq_timeout: -1,
edit_mode: EditMode::Emacs,
+ auto_add_history: false,
}
}
}
@@ -73,6 +90,7 @@
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum HistoryDuplicates {
AlwaysAdd,
+ /// a line will not be added to the history if it matches the previous entry
IgnoreConsecutive,
}
@@ -86,12 +104,14 @@
List,
}
+/// Style of editing / Standard keymaps
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum EditMode {
Emacs,
Vi,
}
+/// Configuration builder
#[derive(Debug, Default)]
pub struct Builder {
p: Config,
@@ -99,7 +119,9 @@
impl Builder {
pub fn new() -> Builder {
- Builder { p: Config::default() }
+ Builder {
+ p: Config::default(),
+ }
}
/// Set the maximum length for the history.
@@ -108,7 +130,9 @@
self
}
- /// Tell if lines which match the previous history entry are saved or not in the history list.
+ /// Tell if lines which match the previous history entry are saved or not
+ /// in the history list.
+ ///
/// By default, they are ignored.
pub fn history_ignore_dups(mut self, yes: bool) -> Builder {
self.p.history_duplicates = if yes {
@@ -119,7 +143,9 @@
self
}
- /// Tell if lines which begin with a space character are saved or not in the history list.
+ /// Tell if lines which begin with a space character are saved or not in
+ /// the history list.
+ ///
/// By default, they are saved.
pub fn history_ignore_space(mut self, yes: bool) -> Builder {
self.p.history_ignore_space = yes;
@@ -132,16 +158,18 @@
self
}
- /// The number of possible completions that determines when the user is asked
- /// whether the list of possibilities should be displayed.
+ /// The number of possible completions that determines when the user is
+ /// asked whether the list of possibilities should be displayed.
pub fn completion_prompt_limit(mut self, completion_prompt_limit: usize) -> Builder {
self.p.completion_prompt_limit = completion_prompt_limit;
self
}
/// Timeout for ambiguous key sequences in milliseconds.
- /// Currently, it is used only to distinguish a single ESC from an ESC sequence.
- /// After seeing an ESC key, wait at most `keyseq_timeout_ms` for another byte.
+ /// Currently, it is used only to distinguish a single ESC from an ESC
+ /// sequence.
+ /// After seeing an ESC key, wait at most `keyseq_timeout_ms` for another
+ /// byte.
pub fn keyseq_timeout(mut self, keyseq_timeout_ms: i32) -> Builder {
self.p.keyseq_timeout = keyseq_timeout_ms;
self
@@ -150,6 +178,18 @@
/// Choose between Emacs or Vi mode.
pub fn edit_mode(mut self, edit_mode: EditMode) -> Builder {
self.p.edit_mode = edit_mode;
+ match edit_mode {
+ EditMode::Emacs => self.p.keyseq_timeout = -1, // no timeout
+ EditMode::Vi => self.p.keyseq_timeout = 500,
+ };
+ self
+ }
+
+ /// Tell if lines are automatically added to the history.
+ ///
+ /// By default, they are not.
+ pub fn auto_add_history(mut self, yes: bool) -> Builder {
+ self.p.auto_add_history = yes;
self
}
diff --git a/src/consts.rs b/src/consts.rs
index aadac84..5841016 100644
--- a/src/consts.rs
+++ b/src/consts.rs
@@ -5,19 +5,29 @@
UnknownEscSeq,
Backspace,
Char(char),
+ ControlDown,
+ ControlLeft,
+ ControlRight,
+ ControlUp,
Ctrl(char),
Delete,
Down,
End,
Enter, // Ctrl('M')
Esc,
+ F(u8),
Home,
+ Insert,
Left,
Meta(char),
Null,
PageDown,
PageUp,
Right,
+ ShiftDown,
+ ShiftLeft,
+ ShiftRight,
+ ShiftUp,
Tab, // Ctrl('I')
Up,
}
@@ -28,7 +38,7 @@
return KeyPress::Char(c);
}
match c {
- '\x00' => KeyPress::Null,
+ '\x00' => KeyPress::Ctrl(' '),
'\x01' => KeyPress::Ctrl('A'),
'\x02' => KeyPress::Ctrl('B'),
'\x03' => KeyPress::Ctrl('C'),
@@ -37,12 +47,13 @@
'\x06' => KeyPress::Ctrl('F'),
'\x07' => KeyPress::Ctrl('G'),
'\x08' => KeyPress::Backspace, // '\b'
- '\x09' => KeyPress::Tab,
+ '\x09' => KeyPress::Tab, // '\t'
'\x0a' => KeyPress::Ctrl('J'), // '\n' (10)
'\x0b' => KeyPress::Ctrl('K'),
'\x0c' => KeyPress::Ctrl('L'),
'\x0d' => KeyPress::Enter, // '\r' (13)
'\x0e' => KeyPress::Ctrl('N'),
+ '\x0f' => KeyPress::Ctrl('O'),
'\x10' => KeyPress::Ctrl('P'),
'\x12' => KeyPress::Ctrl('R'),
'\x13' => KeyPress::Ctrl('S'),
@@ -50,10 +61,15 @@
'\x15' => KeyPress::Ctrl('U'),
'\x16' => KeyPress::Ctrl('V'),
'\x17' => KeyPress::Ctrl('W'),
+ '\x18' => KeyPress::Ctrl('X'),
'\x19' => KeyPress::Ctrl('Y'),
'\x1a' => KeyPress::Ctrl('Z'),
- '\x1b' => KeyPress::Esc,
- '\x7f' => KeyPress::Backspace,
+ '\x1b' => KeyPress::Esc, // Ctrl-[
+ '\x1c' => KeyPress::Ctrl('\\'),
+ '\x1d' => KeyPress::Ctrl(']'),
+ '\x1e' => KeyPress::Ctrl('^'),
+ '\x1f' => KeyPress::Ctrl('_'),
+ '\x7f' => KeyPress::Backspace, // Rubout
_ => KeyPress::Null,
}
}
diff --git a/src/edit.rs b/src/edit.rs
new file mode 100644
index 0000000..7dae766
--- /dev/null
+++ b/src/edit.rs
@@ -0,0 +1,535 @@
+//! Command processor
+
+use std::cell::RefCell;
+use std::fmt;
+use std::rc::Rc;
+use unicode_segmentation::UnicodeSegmentation;
+use unicode_width::UnicodeWidthChar;
+
+use super::Result;
+use hint::Hinter;
+use history::{Direction, History};
+use keymap::{Anchor, At, CharSearch, Cmd, Movement, RepeatCount, Word};
+use keymap::{InputState, Refresher};
+use line_buffer::{LineBuffer, WordAction, MAX_LINE};
+use tty::{Position, RawReader, Renderer};
+use undo::Changeset;
+
+/// Represent the state during line editing.
+/// Implement rendering.
+pub struct State<'out, 'prompt> {
+ pub out: &'out mut Renderer,
+ prompt: &'prompt str, // Prompt to display (rl_prompt)
+ prompt_size: Position, // Prompt Unicode/visible width and height
+ pub line: LineBuffer, // Edited line buffer
+ pub cursor: Position, /* Cursor position (relative to the start of the prompt
+ * for `row`) */
+ pub old_rows: usize, // Number of rows used so far (from start of prompt to end of input)
+ history_index: usize, // The history index we are currently editing
+ saved_line_for_history: LineBuffer, // Current edited line before history browsing
+ byte_buffer: [u8; 4],
+ pub changes: Rc<RefCell<Changeset>>, // changes to line, for undo/redo
+ pub hinter: Option<&'out Hinter>,
+}
+
+impl<'out, 'prompt> State<'out, 'prompt> {
+ pub fn new(
+ out: &'out mut Renderer,
+ prompt: &'prompt str,
+ history_index: usize,
+ hinter: Option<&'out Hinter>,
+ ) -> State<'out, 'prompt> {
+ let capacity = MAX_LINE;
+ let prompt_size = out.calculate_position(prompt, Position::default());
+ State {
+ out,
+ prompt,
+ prompt_size,
+ line: LineBuffer::with_capacity(capacity),
+ cursor: prompt_size,
+ old_rows: 0,
+ history_index,
+ saved_line_for_history: LineBuffer::with_capacity(capacity),
+ byte_buffer: [0; 4],
+ changes: Rc::new(RefCell::new(Changeset::new())),
+ hinter,
+ }
+ }
+
+ pub fn next_cmd<R: RawReader>(
+ &mut self,
+ input_state: &mut InputState,
+ rdr: &mut R,
+ single_esc_abort: bool,
+ ) -> Result<Cmd> {
+ loop {
+ let rc = input_state.next_cmd(rdr, self, single_esc_abort);
+ if rc.is_err() && self.out.sigwinch() {
+ self.out.update_size();
+ try!(self.refresh_line());
+ continue;
+ }
+ if let Ok(Cmd::Replace(_, _)) = rc {
+ self.changes.borrow_mut().begin();
+ }
+ return rc;
+ }
+ }
+
+ pub fn backup(&mut self) {
+ self.saved_line_for_history
+ .update(self.line.as_str(), self.line.pos());
+ }
+ pub fn restore(&mut self) {
+ self.line.update(
+ self.saved_line_for_history.as_str(),
+ self.saved_line_for_history.pos(),
+ );
+ }
+
+ pub fn move_cursor(&mut self) -> Result<()> {
+ // calculate the desired position of the cursor
+ let cursor = self
+ .out
+ .calculate_position(&self.line[..self.line.pos()], self.prompt_size);
+ if self.cursor == cursor {
+ return Ok(());
+ }
+ try!(self.out.move_cursor(self.cursor, cursor));
+ self.cursor = cursor;
+ Ok(())
+ }
+
+ fn refresh(&mut self, prompt: &str, prompt_size: Position, hint: Option<String>) -> Result<()> {
+ let (cursor, end_pos) = try!(self.out.refresh_line(
+ prompt,
+ prompt_size,
+ &self.line,
+ hint,
+ self.cursor.row,
+ self.old_rows,
+ ));
+
+ self.cursor = cursor;
+ self.old_rows = end_pos.row;
+ Ok(())
+ }
+
+ fn hint(&self) -> Option<String> {
+ if let Some(hinter) = self.hinter {
+ hinter.hint(self.line.as_str(), self.line.pos())
+ } else {
+ None
+ }
+ }
+}
+
+impl<'out, 'prompt> Refresher for State<'out, 'prompt> {
+ fn refresh_line(&mut self) -> Result<()> {
+ let prompt_size = self.prompt_size;
+ let hint = self.hint();
+ self.refresh(self.prompt, prompt_size, hint)
+ }
+
+ fn refresh_prompt_and_line(&mut self, prompt: &str) -> Result<()> {
+ let prompt_size = self.out.calculate_position(prompt, Position::default());
+ let hint = self.hint();
+ self.refresh(prompt, prompt_size, hint)
+ }
+ fn doing_insert(&mut self) {
+ self.changes.borrow_mut().begin();
+ }
+ fn done_inserting(&mut self) {
+ self.changes.borrow_mut().end();
+ }
+ fn last_insert(&self) -> Option<String> {
+ self.changes.borrow().last_insert()
+ }
+}
+
+impl<'out, 'prompt> fmt::Debug for State<'out, 'prompt> {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ f.debug_struct("State")
+ .field("prompt", &self.prompt)
+ .field("prompt_size", &self.prompt_size)
+ .field("buf", &self.line)
+ .field("cursor", &self.cursor)
+ .field("cols", &self.out.get_columns())
+ .field("old_rows", &self.old_rows)
+ .field("history_index", &self.history_index)
+ .field("saved_line_for_history", &self.saved_line_for_history)
+ .finish()
+ }
+}
+
+impl<'out, 'prompt> State<'out, 'prompt> {
+ /// Insert the character `ch` at cursor current position.
+ pub fn edit_insert(&mut self, ch: char, n: RepeatCount) -> Result<()> {
+ if let Some(push) = self.line.insert(ch, n) {
+ if push {
+ let prompt_size = self.prompt_size;
+ let hint = self.hint();
+ if n == 1
+ && self.cursor.col + ch.width().unwrap_or(0) < self.out.get_columns()
+ && hint.is_none()
+ {
+ // Avoid a full update of the line in the trivial case.
+ let cursor = self
+ .out
+ .calculate_position(&self.line[..self.line.pos()], self.prompt_size);
+ self.cursor = cursor;
+ let bits = ch.encode_utf8(&mut self.byte_buffer);
+ let bits = bits.as_bytes();
+ self.out.write_and_flush(bits)
+ } else {
+ self.refresh(self.prompt, prompt_size, hint)
+ }
+ } else {
+ self.refresh_line()
+ }
+ } else {
+ Ok(())
+ }
+ }
+
+ /// Replace a single (or n) character(s) under the cursor (Vi mode)
+ pub fn edit_replace_char(&mut self, ch: char, n: RepeatCount) -> Result<()> {
+ self.changes.borrow_mut().begin();
+ let succeed = if let Some(chars) = self.line.delete(n) {
+ let count = chars.graphemes(true).count();
+ self.line.insert(ch, count);
+ self.line.move_backward(1);
+ true
+ } else {
+ false
+ };
+ self.changes.borrow_mut().end();
+ if succeed {
+ self.refresh_line()
+ } else {
+ Ok(())
+ }
+ }
+
+ /// Overwrite the character under the cursor (Vi mode)
+ pub fn edit_overwrite_char(&mut self, ch: char) -> Result<()> {
+ if let Some(end) = self.line.next_pos(1) {
+ {
+ let text = ch.encode_utf8(&mut self.byte_buffer);
+ let start = self.line.pos();
+ self.line.replace(start..end, text);
+ }
+ self.refresh_line()
+ } else {
+ Ok(())
+ }
+ }
+
+ // Yank/paste `text` at current position.
+ pub fn edit_yank(
+ &mut self,
+ input_state: &InputState,
+ text: &str,
+ anchor: Anchor,
+ n: RepeatCount,
+ ) -> Result<()> {
+ if let Anchor::After = anchor {
+ self.line.move_forward(1);
+ }
+ if self.line.yank(text, n).is_some() {
+ if !input_state.is_emacs_mode() {
+ self.line.move_backward(1);
+ }
+ self.refresh_line()
+ } else {
+ Ok(())
+ }
+ }
+
+ // Delete previously yanked text and yank/paste `text` at current position.
+ pub fn edit_yank_pop(&mut self, yank_size: usize, text: &str) -> Result<()> {
+ self.changes.borrow_mut().begin();
+ let result = if self.line.yank_pop(yank_size, text).is_some() {
+ self.refresh_line()
+ } else {
+ Ok(())
+ };
+ self.changes.borrow_mut().end();
+ result
+ }
+
+ /// Move cursor on the left.
+ pub fn edit_move_backward(&mut self, n: RepeatCount) -> Result<()> {
+ if self.line.move_backward(n) {
+ self.move_cursor()
+ } else {
+ Ok(())
+ }
+ }
+
+ /// Move cursor on the right.
+ pub fn edit_move_forward(&mut self, n: RepeatCount) -> Result<()> {
+ if self.line.move_forward(n) {
+ self.move_cursor()
+ } else {
+ Ok(())
+ }
+ }
+
+ /// Move cursor to the start of the line.
+ pub fn edit_move_home(&mut self) -> Result<()> {
+ if self.line.move_home() {
+ self.move_cursor()
+ } else {
+ Ok(())
+ }
+ }
+
+ /// Move cursor to the end of the line.
+ pub fn edit_move_end(&mut self) -> Result<()> {
+ if self.line.move_end() {
+ self.move_cursor()
+ } else {
+ Ok(())
+ }
+ }
+
+ pub fn edit_kill(&mut self, mvt: &Movement) -> Result<()> {
+ if self.line.kill(mvt) {
+ self.refresh_line()
+ } else {
+ Ok(())
+ }
+ }
+
+ pub fn edit_insert_text(&mut self, text: &str) -> Result<()> {
+ if !text.is_empty() {
+ let cursor = self.line.pos();
+ self.line.insert_str(cursor, text);
+ self.refresh_line()
+ } else {
+ Ok(())
+ }
+ }
+
+ pub fn edit_delete(&mut self, n: RepeatCount) -> Result<()> {
+ if self.line.delete(n).is_some() {
+ self.refresh_line()
+ } else {
+ Ok(())
+ }
+ }
+
+ /// Exchange the char before cursor with the character at cursor.
+ pub fn edit_transpose_chars(&mut self) -> Result<()> {
+ self.changes.borrow_mut().begin();
+ let succeed = self.line.transpose_chars();
+ self.changes.borrow_mut().end();
+ if succeed {
+ self.refresh_line()
+ } else {
+ Ok(())
+ }
+ }
+
+ pub fn edit_move_to_prev_word(&mut self, word_def: Word, n: RepeatCount) -> Result<()> {
+ if self.line.move_to_prev_word(word_def, n) {
+ self.move_cursor()
+ } else {
+ Ok(())
+ }
+ }
+
+ pub fn edit_move_to_next_word(&mut self, at: At, word_def: Word, n: RepeatCount) -> Result<()> {
+ if self.line.move_to_next_word(at, word_def, n) {
+ self.move_cursor()
+ } else {
+ Ok(())
+ }
+ }
+
+ pub fn edit_move_to(&mut self, cs: CharSearch, n: RepeatCount) -> Result<()> {
+ if self.line.move_to(cs, n) {
+ self.move_cursor()
+ } else {
+ Ok(())
+ }
+ }
+
+ pub fn edit_word(&mut self, a: WordAction) -> Result<()> {
+ self.changes.borrow_mut().begin();
+ let succeed = self.line.edit_word(a);
+ self.changes.borrow_mut().end();
+ if succeed {
+ self.refresh_line()
+ } else {
+ Ok(())
+ }
+ }
+
+ pub fn edit_transpose_words(&mut self, n: RepeatCount) -> Result<()> {
+ self.changes.borrow_mut().begin();
+ let succeed = self.line.transpose_words(n);
+ self.changes.borrow_mut().end();
+ if succeed {
+ self.refresh_line()
+ } else {
+ Ok(())
+ }
+ }
+
+ /// Substitute the currently edited line with the next or previous history
+ /// entry.
+ pub fn edit_history_next(&mut self, history: &History, prev: bool) -> Result<()> {
+ if history.is_empty() {
+ return Ok(());
+ }
+ if self.history_index == history.len() {
+ if prev {
+ // Save the current edited line before overwriting it
+ self.backup();
+ } else {
+ return Ok(());
+ }
+ } else if self.history_index == 0 && prev {
+ return Ok(());
+ }
+ if prev {
+ self.history_index -= 1;
+ } else {
+ self.history_index += 1;
+ }
+ if self.history_index < history.len() {
+ let buf = history.get(self.history_index).unwrap();
+ self.changes.borrow_mut().begin();
+ self.line.update(buf, buf.len());
+ self.changes.borrow_mut().end();
+ } else {
+ // Restore current edited line
+ self.restore();
+ }
+ self.refresh_line()
+ }
+
+ // Non-incremental, anchored search
+ pub fn edit_history_search(&mut self, history: &History, dir: Direction) -> Result<()> {
+ if history.is_empty() {
+ return self.out.beep();
+ }
+ if self.history_index == history.len() && dir == Direction::Forward
+ || self.history_index == 0 && dir == Direction::Reverse
+ {
+ return self.out.beep();
+ }
+ if dir == Direction::Reverse {
+ self.history_index -= 1;
+ } else {
+ self.history_index += 1;
+ }
+ if let Some(history_index) = history.starts_with(
+ &self.line.as_str()[..self.line.pos()],
+ self.history_index,
+ dir,
+ ) {
+ self.history_index = history_index;
+ let buf = history.get(history_index).unwrap();
+ self.changes.borrow_mut().begin();
+ self.line.update(buf, buf.len());
+ self.changes.borrow_mut().end();
+ self.refresh_line()
+ } else {
+ self.out.beep()
+ }
+ }
+
+ /// Substitute the currently edited line with the first/last history entry.
+ pub fn edit_history(&mut self, history: &History, first: bool) -> Result<()> {
+ if history.is_empty() {
+ return Ok(());
+ }
+ if self.history_index == history.len() {
+ if first {
+ // Save the current edited line before overwriting it
+ self.backup();
+ } else {
+ return Ok(());
+ }
+ } else if self.history_index == 0 && first {
+ return Ok(());
+ }
+ if first {
+ self.history_index = 0;
+ let buf = history.get(self.history_index).unwrap();
+ self.changes.borrow_mut().begin();
+ self.line.update(buf, buf.len());
+ self.changes.borrow_mut().end();
+ } else {
+ self.history_index = history.len();
+ // Restore current edited line
+ self.restore();
+ }
+ self.refresh_line()
+ }
+}
+
+#[cfg(test)]
+pub fn init_state<'out>(out: &'out mut Renderer, line: &str, pos: usize) -> State<'out, 'static> {
+ State {
+ out,
+ prompt: "",
+ prompt_size: Position::default(),
+ line: LineBuffer::init(line, pos, None),
+ cursor: Position::default(),
+ old_rows: 0,
+ history_index: 0,
+ saved_line_for_history: LineBuffer::with_capacity(100),
+ byte_buffer: [0; 4],
+ changes: Rc::new(RefCell::new(Changeset::new())),
+ hinter: None,
+ }
+}
+
+#[cfg(test)]
+mod test {
+ use super::init_state;
+ use history::History;
+ use tty::Sink;
+
+ #[test]
+ fn edit_history_next() {
+ let mut out = Sink::new();
+ let line = "current edited line";
+ let mut s = init_state(&mut out, line, 6);
+ let mut history = History::new();
+ history.add("line0");
+ history.add("line1");
+ s.history_index = history.len();
+
+ for _ in 0..2 {
+ s.edit_history_next(&history, false).unwrap();
+ assert_eq!(line, s.line.as_str());
+ }
+
+ s.edit_history_next(&history, true).unwrap();
+ assert_eq!(line, s.saved_line_for_history.as_str());
+ assert_eq!(1, s.history_index);
+ assert_eq!("line1", s.line.as_str());
+
+ for _ in 0..2 {
+ s.edit_history_next(&history, true).unwrap();
+ assert_eq!(line, s.saved_line_for_history.as_str());
+ assert_eq!(0, s.history_index);
+ assert_eq!("line0", s.line.as_str());
+ }
+
+ s.edit_history_next(&history, false).unwrap();
+ assert_eq!(line, s.saved_line_for_history.as_str());
+ assert_eq!(1, s.history_index);
+ assert_eq!("line1", s.line.as_str());
+
+ s.edit_history_next(&history, false).unwrap();
+ // assert_eq!(line, s.saved_line_for_history);
+ assert_eq!(2, s.history_index);
+ assert_eq!(line, s.line.as_str());
+ }
+}
diff --git a/src/error.rs b/src/error.rs
index 009ec65..d9cfdb8 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -1,14 +1,12 @@
//! Contains error type for handling I/O and Errno errors
-#[cfg(windows)]
-use std::char;
-use std::io;
-use std::error;
-use std::fmt;
#[cfg(unix)]
use nix;
-
-#[cfg(unix)]
-use char_iter;
+#[cfg(windows)]
+use std::char;
+use std::error;
+use std::fmt;
+use std::io;
+use std::str;
/// The error type for Rustyline errors that can arise from
/// I/O related errors or Errno when using the nix-rust library
@@ -22,7 +20,7 @@
Interrupted,
/// Chars Error
#[cfg(unix)]
- Char(char_iter::CharsError),
+ Char(str::Utf8Error),
/// Unix Error from syscall
#[cfg(unix)]
Errno(nix::Error),
@@ -41,7 +39,7 @@
#[cfg(unix)]
ReadlineError::Char(ref err) => err.fmt(f),
#[cfg(unix)]
- ReadlineError::Errno(ref err) => write!(f, "Errno: {}", err.errno().desc()),
+ ReadlineError::Errno(ref err) => err.fmt(f),
#[cfg(windows)]
ReadlineError::WindowResize => write!(f, "WindowResize"),
#[cfg(windows)]
@@ -59,7 +57,7 @@
#[cfg(unix)]
ReadlineError::Char(ref err) => err.description(),
#[cfg(unix)]
- ReadlineError::Errno(ref err) => err.errno().desc(),
+ ReadlineError::Errno(ref err) => err.description(),
#[cfg(windows)]
ReadlineError::WindowResize => "WindowResize",
#[cfg(windows)]
@@ -82,8 +80,8 @@
}
#[cfg(unix)]
-impl From<char_iter::CharsError> for ReadlineError {
- fn from(err: char_iter::CharsError) -> ReadlineError {
+impl From<str::Utf8Error> for ReadlineError {
+ fn from(err: str::Utf8Error) -> ReadlineError {
ReadlineError::Char(err)
}
}
diff --git a/src/hint.rs b/src/hint.rs
new file mode 100644
index 0000000..c15db9c
--- /dev/null
+++ b/src/hint.rs
@@ -0,0 +1,15 @@
+//! Hints (suggestions at the right of the prompt as you type).
+
+/// Hints provider
+pub trait Hinter {
+ /// Takes the currently edited `line` with the cursor `pos`ition and
+ /// returns the string that should be displayed or `None`
+ /// if no hint is available for the text the user currently typed.
+ fn hint(&self, line: &str, pos: usize) -> Option<String>;
+}
+
+impl Hinter for () {
+ fn hint(&self, _line: &str, _pos: usize) -> Option<String> {
+ None
+ }
+}
diff --git a/src/history.rs b/src/history.rs
index e283cb4..d4e0c94 100644
--- a/src/history.rs
+++ b/src/history.rs
@@ -1,17 +1,18 @@
//! History API
-use std::collections::VecDeque;
+#[cfg(unix)]
+use libc;
use std::collections::vec_deque;
+use std::collections::VecDeque;
use std::fs::File;
use std::iter::DoubleEndedIterator;
use std::ops::Index;
use std::path::Path;
-#[cfg(unix)]
-use libc;
use super::Result;
use config::{Config, HistoryDuplicates};
+/// Search direction
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum Direction {
Forward,
@@ -55,12 +56,14 @@
if self.max_len == 0 {
return false;
}
- if line.as_ref().is_empty() ||
- (self.ignore_space &&
- line.as_ref()
- .chars()
- .next()
- .map_or(true, |c| c.is_whitespace())) {
+ if line.as_ref().is_empty()
+ || (self.ignore_space
+ && line
+ .as_ref()
+ .chars()
+ .next()
+ .map_or(true, |c| c.is_whitespace()))
+ {
return false;
}
if self.ignore_dups {
@@ -77,19 +80,22 @@
true
}
- /// Returns the number of entries in the history.
+ /// Return the number of entries in the history.
pub fn len(&self) -> usize {
self.entries.len()
}
- /// Returns true if the history has no entry.
+ /// Return true if the history has no entry.
pub fn is_empty(&self) -> bool {
self.entries.is_empty()
}
/// Set the maximum length for the history. This function can be called even
/// if there is already some history, the function will make sure to retain
- /// just the latest `len` elements if the new history length value is smaller
- /// than the amount of items already inside the history.
+ /// just the latest `len` elements if the new history length value is
+ /// smaller than the amount of items already inside the history.
+ ///
+ /// Like [stifle_history](http://cnswww.cns.cwru.
+ /// edu/php/chet/readline/history.html#IDX11).
pub fn set_max_len(&mut self, len: usize) {
self.max_len = len;
if len == 0 {
@@ -105,6 +111,10 @@
}
/// Save the history in the specified file.
+ // TODO append_history
+ // http://cnswww.cns.cwru.edu/php/chet/readline/history.html#IDX30
+ // TODO history_truncate_file
+ // http://cnswww.cns.cwru.edu/php/chet/readline/history.html#IDX31
pub fn save<P: AsRef<Path> + ?Sized>(&self, path: &P) -> Result<()> {
use std::io::{BufWriter, Write};
@@ -121,13 +131,15 @@
try!(wtr.write_all(entry.as_bytes()));
try!(wtr.write_all(b"\n"));
}
+ // https://github.com/rust-lang/rust/issues/32677#issuecomment-204833485
+ try!(wtr.flush());
Ok(())
}
/// Load the history from the specified file.
///
- /// # Failure
- /// Will return `Err` if path does not already exist.
+ /// # Errors
+ /// Will return `Err` if path does not already exist or could not be read.
pub fn load<P: AsRef<Path> + ?Sized>(&mut self, path: &P) -> Result<()> {
use std::io::{BufRead, BufReader};
@@ -144,29 +156,36 @@
self.entries.clear()
}
- /// Search history (start position inclusive [0, len-1])
- /// Return the absolute index of the nearest history entry that matches `term`.
- /// Return None if no entry contains `term` between [start, len -1] for forward search
+ /// Search history (start position inclusive [0, len-1]).
+ ///
+ /// Return the absolute index of the nearest history entry that matches
+ /// `term`.
+ ///
+ /// Return None if no entry contains `term` between [start, len -1] for
+ /// forward search
/// or between [0, start] for reverse search.
pub fn search(&self, term: &str, start: usize, dir: Direction) -> Option<usize> {
let test = |entry: &String| entry.contains(term);
self.search_match(term, start, dir, test)
}
+ /// Anchored search
pub fn starts_with(&self, term: &str, start: usize, dir: Direction) -> Option<usize> {
let test = |entry: &String| entry.starts_with(term);
self.search_match(term, start, dir, test)
}
fn search_match<F>(&self, term: &str, start: usize, dir: Direction, test: F) -> Option<usize>
- where F: Fn(&String) -> bool
+ where
+ F: Fn(&String) -> bool,
{
if term.is_empty() || start >= self.len() {
return None;
}
match dir {
Direction::Reverse => {
- let index = self.entries
+ let index = self
+ .entries
.iter()
.rev()
.skip(self.entries.len() - 1 - start)
@@ -254,9 +273,9 @@
#[cfg(test)]
mod tests {
extern crate tempdir;
- use std::path::Path;
use super::{Direction, History};
use config::Config;
+ use std::path::Path;
fn init() -> History {
let mut history = History::new();
@@ -289,7 +308,7 @@
let mut history = init();
history.set_max_len(1);
assert_eq!(1, history.entries.len());
- assert_eq!(Some(&"line3".to_string()), history.last());
+ assert_eq!(Some(&"line3".to_owned()), history.last());
}
#[test]
diff --git a/src/keymap.rs b/src/keymap.rs
index 7141066..3652493 100644
--- a/src/keymap.rs
+++ b/src/keymap.rs
@@ -1,71 +1,113 @@
//! Bindings from keys to command for Emacs and Vi modes
-use std::cell::RefCell;
use std::collections::HashMap;
-use std::rc::Rc;
+use std::sync::{Arc, RwLock};
+use super::Result;
use config::Config;
use config::EditMode;
use consts::KeyPress;
use tty::RawReader;
-use super::Result;
+/// The number of times one command should be repeated.
pub type RepeatCount = usize;
+/// Commands
#[derive(Debug, Clone, PartialEq)]
pub enum Cmd {
+ /// abort
Abort, // Miscellaneous Command
+ /// accept-line
AcceptLine,
+ /// beginning-of-history
BeginningOfHistory,
+ /// capitalize-word
CapitalizeWord,
+ /// clear-screen
ClearScreen,
+ /// complete
Complete,
+ /// downcase-word
DowncaseWord,
+ /// vi-eof-maybe
EndOfFile,
+ /// end-of-history
EndOfHistory,
+ /// forward-search-history
ForwardSearchHistory,
+ /// history-search-backward
HistorySearchBackward,
+ /// history-search-forward
HistorySearchForward,
Insert(RepeatCount, String),
Interrupt,
+ /// backward-delete-char, backward-kill-line, backward-kill-word
+ /// delete-char, kill-line, kill-word, unix-line-discard, unix-word-rubout,
+ /// vi-delete, vi-delete-to, vi-rubout
Kill(Movement),
+ /// backward-char, backward-word, beginning-of-line, end-of-line,
+ /// forward-char, forward-word, vi-char-search, vi-end-word, vi-next-word,
+ /// vi-prev-word
Move(Movement),
+ /// next-history
NextHistory,
Noop,
+ /// vi-replace
+ Overwrite(char),
+ /// previous-history
PreviousHistory,
+ /// quoted-insert
QuotedInsert,
- Replace(RepeatCount, char),
+ /// vi-change-char
+ ReplaceChar(RepeatCount, char),
+ /// vi-change-to, vi-substitute
+ Replace(Movement, Option<String>),
+ /// reverse-search-history
ReverseSearchHistory,
+ /// self-insert
SelfInsert(RepeatCount, char),
Suspend,
+ /// transpose-chars
TransposeChars,
+ /// transpose-words
TransposeWords(RepeatCount),
+ /// undo
+ Undo(RepeatCount),
Unknown,
+ /// upcase-word
UpcaseWord,
+ /// vi-yank-to
ViYankTo(Movement),
+ /// yank, vi-put
Yank(RepeatCount, Anchor),
+ /// yank-pop
YankPop,
}
impl Cmd {
pub fn should_reset_kill_ring(&self) -> bool {
match *self {
- Cmd::Kill(Movement::BackwardChar(_)) |
- Cmd::Kill(Movement::ForwardChar(_)) => true,
- Cmd::ClearScreen | Cmd::Kill(_) | Cmd::Noop | Cmd::Suspend | Cmd::Yank(_, _) |
- Cmd::YankPop => false,
+ Cmd::Kill(Movement::BackwardChar(_)) | Cmd::Kill(Movement::ForwardChar(_)) => true,
+ Cmd::ClearScreen
+ | Cmd::Kill(_)
+ | Cmd::Replace(_, _)
+ | Cmd::Noop
+ | Cmd::Suspend
+ | Cmd::Yank(_, _)
+ | Cmd::YankPop => false,
_ => true,
}
}
fn is_repeatable_change(&self) -> bool {
match *self {
- Cmd::Insert(_, _) => true,
- Cmd::Kill(_) => true,
- Cmd::Replace(_, _) => true,
- Cmd::SelfInsert(_, _) => true,
+ Cmd::Insert(_, _)
+ | Cmd::Kill(_)
+ | Cmd::ReplaceChar(_, _)
+ | Cmd::Replace(_, _)
+ | Cmd::SelfInsert(_, _)
+ | Cmd::ViYankTo(_)
+ | Cmd::Yank(_, _) => true,
Cmd::TransposeChars => false, // TODO Validate
- Cmd::ViYankTo(_) => true,
- Cmd::Yank(_, _) => true,
_ => false,
}
}
@@ -76,16 +118,41 @@
}
}
- fn redo(&self, new: Option<RepeatCount>) -> Cmd {
+ // Replay this command with a possible different `RepeatCount`.
+ fn redo(&self, new: Option<RepeatCount>, wrt: &Refresher) -> Cmd {
match *self {
Cmd::Insert(previous, ref text) => {
Cmd::Insert(repeat_count(previous, new), text.clone())
}
Cmd::Kill(ref mvt) => Cmd::Kill(mvt.redo(new)),
Cmd::Move(ref mvt) => Cmd::Move(mvt.redo(new)),
- Cmd::Replace(previous, c) => Cmd::Replace(repeat_count(previous, new), c),
- Cmd::SelfInsert(previous, c) => Cmd::SelfInsert(repeat_count(previous, new), c),
- //Cmd::TransposeChars => Cmd::TransposeChars,
+ Cmd::ReplaceChar(previous, c) => Cmd::ReplaceChar(repeat_count(previous, new), c),
+ Cmd::Replace(ref mvt, ref text) => {
+ if text.is_none() {
+ let last_insert = wrt.last_insert();
+ if let Movement::ForwardChar(0) = mvt {
+ Cmd::Replace(
+ Movement::ForwardChar(
+ last_insert.as_ref().map_or(0, |text| text.len()),
+ ),
+ last_insert,
+ )
+ } else {
+ Cmd::Replace(mvt.redo(new), last_insert)
+ }
+ } else {
+ Cmd::Replace(mvt.redo(new), text.clone())
+ }
+ }
+ Cmd::SelfInsert(previous, c) => {
+ // consecutive char inserts are repeatable not only the last one...
+ if let Some(text) = wrt.last_insert() {
+ Cmd::Insert(repeat_count(previous, new), text)
+ } else {
+ Cmd::SelfInsert(repeat_count(previous, new), c)
+ }
+ }
+ // Cmd::TransposeChars => Cmd::TransposeChars,
Cmd::ViYankTo(ref mvt) => Cmd::ViYankTo(mvt.redo(new)),
Cmd::Yank(previous, anchor) => Cmd::Yank(repeat_count(previous, new), anchor),
_ => unreachable!(),
@@ -100,16 +167,18 @@
}
}
+/// Different word definitions
#[derive(Debug, Clone, PartialEq, Copy)]
pub enum Word {
- // non-blanks characters
+ /// non-blanks characters
Big,
- // alphanumeric characters
+ /// alphanumeric characters
Emacs,
- // alphanumeric (and '_') characters
+ /// alphanumeric (and '_') characters
Vi,
}
+/// Where to move with respect to word boundary
#[derive(Debug, Clone, PartialEq, Copy)]
pub enum At {
Start,
@@ -117,13 +186,15 @@
AfterEnd,
}
+/// Where to paste (relative to cursor position)
#[derive(Debug, Clone, PartialEq, Copy)]
pub enum Anchor {
After,
Before,
}
-#[derive(Debug, Clone, PartialEq)]
+/// Vi character search
+#[derive(Debug, Clone, PartialEq, Copy)]
pub enum CharSearch {
Forward(char),
// until
@@ -144,21 +215,30 @@
}
}
-
+/// Where to move
#[derive(Debug, Clone, PartialEq)]
pub enum Movement {
WholeLine, // not really a movement
+ /// beginning-of-line
BeginningOfLine,
+ /// end-of-line
EndOfLine,
+ /// backward-word, vi-prev-word
BackwardWord(RepeatCount, Word), // Backward until start of word
+ /// forward-word, vi-end-word, vi-next-word
ForwardWord(RepeatCount, At, Word), // Forward until start/end of word
+ /// vi-char-search
ViCharSearch(RepeatCount, CharSearch),
+ /// vi-first-print
ViFirstPrint,
+ /// backward-char
BackwardChar(RepeatCount),
+ /// forward-char
ForwardChar(RepeatCount),
}
impl Movement {
+ // Replay this movement with a possible different `RepeatCount`.
fn redo(&self, new: Option<RepeatCount>) -> Movement {
match *self {
Movement::WholeLine => Movement::WholeLine,
@@ -171,8 +251,8 @@
Movement::ForwardWord(previous, at, word) => {
Movement::ForwardWord(repeat_count(previous, new), at, word)
}
- Movement::ViCharSearch(previous, ref char_search) => {
- Movement::ViCharSearch(repeat_count(previous, new), char_search.clone())
+ Movement::ViCharSearch(previous, char_search) => {
+ Movement::ViCharSearch(repeat_count(previous, new), char_search)
}
Movement::BackwardChar(previous) => Movement::BackwardChar(repeat_count(previous, new)),
Movement::ForwardChar(previous) => Movement::ForwardChar(repeat_count(previous, new)),
@@ -180,27 +260,52 @@
}
}
-pub struct EditState {
+#[derive(PartialEq)]
+enum InputMode {
+ /// Vi Command/Alternate
+ Command,
+ /// Insert/Input mode
+ Insert,
+ /// Overwrite mode
+ Replace,
+}
+
+/// Tranform key(s) to commands based on current input mode
+pub struct InputState {
mode: EditMode,
- custom_bindings: Rc<RefCell<HashMap<KeyPress, Cmd>>>,
- // Vi Command/Alternate, Insert/Input mode
- insert: bool, // vi only ?
+ custom_bindings: Arc<RwLock<HashMap<KeyPress, Cmd>>>,
+ input_mode: InputMode, // vi only ?
// numeric arguments: http://web.mit.edu/gnu/doc/html/rlman_1.html#SEC7
num_args: i16,
- last_cmd: Cmd, // vi only
- consecutive_insert: bool,
+ last_cmd: Cmd, // vi only
last_char_search: Option<CharSearch>, // vi only
}
-impl EditState {
- pub fn new(config: &Config, custom_bindings: Rc<RefCell<HashMap<KeyPress, Cmd>>>) -> EditState {
- EditState {
+pub trait Refresher {
+ /// Rewrite the currently edited line accordingly to the buffer content,
+ /// cursor position, and number of columns of the terminal.
+ fn refresh_line(&mut self) -> Result<()>;
+ /// Same as `refresh_line` but with a dynamic prompt.
+ fn refresh_prompt_and_line(&mut self, prompt: &str) -> Result<()>;
+ /// Vi only, switch to insert mode.
+ fn doing_insert(&mut self);
+ /// Vi only, switch to command mode.
+ fn done_inserting(&mut self);
+ /// Vi only, last text inserted.
+ fn last_insert(&self) -> Option<String>;
+}
+
+impl InputState {
+ pub fn new(
+ config: &Config,
+ custom_bindings: Arc<RwLock<HashMap<KeyPress, Cmd>>>,
+ ) -> InputState {
+ InputState {
mode: config.edit_mode(),
- custom_bindings: custom_bindings,
- insert: true,
+ custom_bindings,
+ input_mode: InputMode::Insert,
num_args: 0,
last_cmd: Cmd::Noop,
- consecutive_insert: false,
last_char_search: None,
}
}
@@ -209,16 +314,29 @@
self.mode == EditMode::Emacs
}
- pub fn next_cmd<R: RawReader>(&mut self, rdr: &mut R) -> Result<Cmd> {
+ /// Parse user input into one command
+ /// `single_esc_abort` is used in emacs mode on unix platform when a single
+ /// esc key is expected to abort current action.
+ pub fn next_cmd<R: RawReader>(
+ &mut self,
+ rdr: &mut R,
+ wrt: &mut Refresher,
+ single_esc_abort: bool,
+ ) -> Result<Cmd> {
match self.mode {
- EditMode::Emacs => self.emacs(rdr),
- EditMode::Vi if self.insert => self.vi_insert(rdr),
- EditMode::Vi => self.vi_command(rdr),
+ EditMode::Emacs => self.emacs(rdr, wrt, single_esc_abort),
+ EditMode::Vi if self.input_mode != InputMode::Command => self.vi_insert(rdr, wrt),
+ EditMode::Vi => self.vi_command(rdr, wrt),
}
}
// TODO dynamic prompt (arg: ?)
- fn emacs_digit_argument<R: RawReader>(&mut self, rdr: &mut R, digit: char) -> Result<KeyPress> {
+ fn emacs_digit_argument<R: RawReader>(
+ &mut self,
+ rdr: &mut R,
+ wrt: &mut Refresher,
+ digit: char,
+ ) -> Result<KeyPress> {
match digit {
'0'...'9' => {
self.num_args = digit.to_digit(10).unwrap() as i16;
@@ -229,198 +347,217 @@
_ => unreachable!(),
}
loop {
- let key = try!(rdr.next_key());
+ try!(wrt.refresh_prompt_and_line(&format!("(arg: {}) ", self.num_args)));
+ let key = try!(rdr.next_key(true));
match key {
- KeyPress::Char(digit @ '0'...'9') |
- KeyPress::Meta(digit @ '0'...'9') => {
+ KeyPress::Char(digit @ '0'...'9') | KeyPress::Meta(digit @ '0'...'9') => {
if self.num_args == -1 {
self.num_args *= digit.to_digit(10).unwrap() as i16;
- } else {
- self.num_args = self.num_args
+ } else if self.num_args.abs() < 1000 {
+ // shouldn't ever need more than 4 digits
+ self.num_args = self
+ .num_args
.saturating_mul(10)
.saturating_add(digit.to_digit(10).unwrap() as i16);
}
}
- _ => return Ok(key),
+ KeyPress::Char('-') | KeyPress::Meta('-') => {}
+ _ => {
+ try!(wrt.refresh_line());
+ return Ok(key);
+ }
};
}
}
- fn emacs<R: RawReader>(&mut self, rdr: &mut R) -> Result<Cmd> {
- let mut key = try!(rdr.next_key());
+ fn emacs<R: RawReader>(
+ &mut self,
+ rdr: &mut R,
+ wrt: &mut Refresher,
+ single_esc_abort: bool,
+ ) -> Result<Cmd> {
+ let mut key = try!(rdr.next_key(single_esc_abort));
if let KeyPress::Meta(digit @ '-') = key {
- key = try!(self.emacs_digit_argument(rdr, digit));
+ key = try!(self.emacs_digit_argument(rdr, wrt, digit));
} else if let KeyPress::Meta(digit @ '0'...'9') = key {
- key = try!(self.emacs_digit_argument(rdr, digit));
+ key = try!(self.emacs_digit_argument(rdr, wrt, digit));
}
let (n, positive) = self.emacs_num_args(); // consume them in all cases
- if let Some(cmd) = self.custom_bindings.borrow().get(&key) {
- debug!(target: "rustyline", "Custom command: {:?}", cmd);
- return Ok(if cmd.is_repeatable() {
- cmd.redo(Some(n))
- } else {
- cmd.clone()
- });
+ {
+ let bindings = self.custom_bindings.read().unwrap();
+ if let Some(cmd) = bindings.get(&key) {
+ debug!(target: "rustyline", "Custom command: {:?}", cmd);
+ return Ok(if cmd.is_repeatable() {
+ cmd.redo(Some(n), wrt)
+ } else {
+ cmd.clone()
+ });
+ }
}
let cmd = match key {
- KeyPress::Char(c) => {
- if positive {
- Cmd::SelfInsert(n, c)
- } else {
- Cmd::Unknown
- }
- }
+ KeyPress::Char(c) => if positive {
+ Cmd::SelfInsert(n, c)
+ } else {
+ Cmd::Unknown
+ },
KeyPress::Ctrl('A') => Cmd::Move(Movement::BeginningOfLine),
- KeyPress::Ctrl('B') => {
- if positive {
- Cmd::Move(Movement::BackwardChar(n))
- } else {
- Cmd::Move(Movement::ForwardChar(n))
- }
- }
+ KeyPress::Ctrl('B') => if positive {
+ Cmd::Move(Movement::BackwardChar(n))
+ } else {
+ Cmd::Move(Movement::ForwardChar(n))
+ },
KeyPress::Ctrl('E') => Cmd::Move(Movement::EndOfLine),
- KeyPress::Ctrl('F') => {
- if positive {
- Cmd::Move(Movement::ForwardChar(n))
- } else {
- Cmd::Move(Movement::BackwardChar(n))
- }
- }
- KeyPress::Ctrl('G') |
- KeyPress::Esc => Cmd::Abort,
- KeyPress::Ctrl('H') |
- KeyPress::Backspace => {
- if positive {
- Cmd::Kill(Movement::BackwardChar(n))
- } else {
- Cmd::Kill(Movement::ForwardChar(n))
- }
- }
+ KeyPress::Ctrl('F') => if positive {
+ Cmd::Move(Movement::ForwardChar(n))
+ } else {
+ Cmd::Move(Movement::BackwardChar(n))
+ },
+ KeyPress::Ctrl('G') | KeyPress::Esc | KeyPress::Meta('\x07') => Cmd::Abort,
+ KeyPress::Ctrl('H') | KeyPress::Backspace => if positive {
+ Cmd::Kill(Movement::BackwardChar(n))
+ } else {
+ Cmd::Kill(Movement::ForwardChar(n))
+ },
KeyPress::Tab => Cmd::Complete,
- KeyPress::Ctrl('K') => {
- if positive {
- Cmd::Kill(Movement::EndOfLine)
- } else {
- Cmd::Kill(Movement::BeginningOfLine)
- }
- }
+ KeyPress::Ctrl('K') => if positive {
+ Cmd::Kill(Movement::EndOfLine)
+ } else {
+ Cmd::Kill(Movement::BeginningOfLine)
+ },
KeyPress::Ctrl('L') => Cmd::ClearScreen,
KeyPress::Ctrl('N') => Cmd::NextHistory,
KeyPress::Ctrl('P') => Cmd::PreviousHistory,
- KeyPress::Meta('\x08') |
- KeyPress::Meta('\x7f') => {
- if positive {
- Cmd::Kill(Movement::BackwardWord(n, Word::Emacs))
- } else {
- Cmd::Kill(Movement::ForwardWord(n, At::AfterEnd, Word::Emacs))
+ KeyPress::Ctrl('X') => {
+ let snd_key = try!(rdr.next_key(true));
+ match snd_key {
+ KeyPress::Ctrl('G') | KeyPress::Esc => Cmd::Abort,
+ KeyPress::Ctrl('U') => Cmd::Undo(n),
+ _ => Cmd::Unknown,
}
}
+ KeyPress::Meta('\x08') | KeyPress::Meta('\x7f') => if positive {
+ Cmd::Kill(Movement::BackwardWord(n, Word::Emacs))
+ } else {
+ Cmd::Kill(Movement::ForwardWord(n, At::AfterEnd, Word::Emacs))
+ },
KeyPress::Meta('<') => Cmd::BeginningOfHistory,
KeyPress::Meta('>') => Cmd::EndOfHistory,
- KeyPress::Meta('B') => {
- if positive {
- Cmd::Move(Movement::BackwardWord(n, Word::Emacs))
- } else {
- Cmd::Move(Movement::ForwardWord(n, At::AfterEnd, Word::Emacs))
- }
- }
- KeyPress::Meta('C') => Cmd::CapitalizeWord,
- KeyPress::Meta('D') => {
- if positive {
- Cmd::Kill(Movement::ForwardWord(n, At::AfterEnd, Word::Emacs))
- } else {
- Cmd::Kill(Movement::BackwardWord(n, Word::Emacs))
- }
- }
- KeyPress::Meta('F') => {
- if positive {
- Cmd::Move(Movement::ForwardWord(n, At::AfterEnd, Word::Emacs))
- } else {
- Cmd::Move(Movement::BackwardWord(n, Word::Emacs))
- }
- }
- KeyPress::Meta('L') => Cmd::DowncaseWord,
- KeyPress::Meta('T') => Cmd::TransposeWords(n),
- KeyPress::Meta('U') => Cmd::UpcaseWord,
- KeyPress::Meta('Y') => Cmd::YankPop,
+ KeyPress::Meta('B') | KeyPress::Meta('b') => if positive {
+ Cmd::Move(Movement::BackwardWord(n, Word::Emacs))
+ } else {
+ Cmd::Move(Movement::ForwardWord(n, At::AfterEnd, Word::Emacs))
+ },
+ KeyPress::Meta('C') | KeyPress::Meta('c') => Cmd::CapitalizeWord,
+ KeyPress::Meta('D') | KeyPress::Meta('d') => if positive {
+ Cmd::Kill(Movement::ForwardWord(n, At::AfterEnd, Word::Emacs))
+ } else {
+ Cmd::Kill(Movement::BackwardWord(n, Word::Emacs))
+ },
+ KeyPress::Meta('F') | KeyPress::Meta('f') => if positive {
+ Cmd::Move(Movement::ForwardWord(n, At::AfterEnd, Word::Emacs))
+ } else {
+ Cmd::Move(Movement::BackwardWord(n, Word::Emacs))
+ },
+ KeyPress::Meta('L') | KeyPress::Meta('l') => Cmd::DowncaseWord,
+ KeyPress::Meta('T') | KeyPress::Meta('t') => Cmd::TransposeWords(n),
+ KeyPress::Meta('U') | KeyPress::Meta('u') => Cmd::UpcaseWord,
+ KeyPress::Meta('Y') | KeyPress::Meta('y') => Cmd::YankPop,
_ => self.common(key, n, positive),
};
debug!(target: "rustyline", "Emacs command: {:?}", cmd);
Ok(cmd)
}
- fn vi_arg_digit<R: RawReader>(&mut self, rdr: &mut R, digit: char) -> Result<KeyPress> {
+ fn vi_arg_digit<R: RawReader>(
+ &mut self,
+ rdr: &mut R,
+ wrt: &mut Refresher,
+ digit: char,
+ ) -> Result<KeyPress> {
self.num_args = digit.to_digit(10).unwrap() as i16;
loop {
- let key = try!(rdr.next_key());
+ try!(wrt.refresh_prompt_and_line(&format!("(arg: {}) ", self.num_args)));
+ let key = try!(rdr.next_key(false));
match key {
KeyPress::Char(digit @ '0'...'9') => {
- self.num_args = self.num_args
- .saturating_mul(10)
- .saturating_add(digit.to_digit(10).unwrap() as i16);
+ if self.num_args.abs() < 1000 {
+ // shouldn't ever need more than 4 digits
+ self.num_args = self
+ .num_args
+ .saturating_mul(10)
+ .saturating_add(digit.to_digit(10).unwrap() as i16);
+ }
}
- _ => return Ok(key),
+ _ => {
+ try!(wrt.refresh_line());
+ return Ok(key);
+ }
};
}
}
- fn vi_command<R: RawReader>(&mut self, rdr: &mut R) -> Result<Cmd> {
- let mut key = try!(rdr.next_key());
+ fn vi_command<R: RawReader>(&mut self, rdr: &mut R, wrt: &mut Refresher) -> Result<Cmd> {
+ let mut key = try!(rdr.next_key(false));
if let KeyPress::Char(digit @ '1'...'9') = key {
- key = try!(self.vi_arg_digit(rdr, digit));
+ key = try!(self.vi_arg_digit(rdr, wrt, digit));
}
let no_num_args = self.num_args == 0;
let n = self.vi_num_args(); // consume them in all cases
- if let Some(cmd) = self.custom_bindings.borrow().get(&key) {
- debug!(target: "rustyline", "Custom command: {:?}", cmd);
- return Ok(if cmd.is_repeatable() {
- if no_num_args {
- cmd.redo(None)
- } else {
- cmd.redo(Some(n))
- }
- } else {
- cmd.clone()
- });
+ {
+ let bindings = self.custom_bindings.read().unwrap();
+ if let Some(cmd) = bindings.get(&key) {
+ debug!(target: "rustyline", "Custom command: {:?}", cmd);
+ return Ok(if cmd.is_repeatable() {
+ if no_num_args {
+ cmd.redo(None, wrt)
+ } else {
+ cmd.redo(Some(n), wrt)
+ }
+ } else {
+ cmd.clone()
+ });
+ }
}
let cmd = match key {
KeyPress::Char('$') |
KeyPress::End => Cmd::Move(Movement::EndOfLine),
- KeyPress::Char('.') => { // vi-redo
+ KeyPress::Char('.') => { // vi-redo (repeat last command)
if no_num_args {
- self.last_cmd.redo(None)
+ self.last_cmd.redo(None, wrt)
} else {
- self.last_cmd.redo(Some(n))
+ self.last_cmd.redo(Some(n), wrt)
}
},
// TODO KeyPress::Char('%') => Cmd::???, Move to the corresponding opening/closing bracket
KeyPress::Char('0') => Cmd::Move(Movement::BeginningOfLine),
KeyPress::Char('^') => Cmd::Move(Movement::ViFirstPrint),
KeyPress::Char('a') => {
- // vi-append-mode: Vi enter insert mode after the cursor.
- self.insert = true;
+ // vi-append-mode
+ self.input_mode = InputMode::Insert;
+ wrt.doing_insert();
Cmd::Move(Movement::ForwardChar(n))
}
KeyPress::Char('A') => {
- // vi-append-eol: Vi enter insert mode at end of line.
- self.insert = true;
+ // vi-append-eol
+ self.input_mode = InputMode::Insert;
+ wrt.doing_insert();
Cmd::Move(Movement::EndOfLine)
}
KeyPress::Char('b') => Cmd::Move(Movement::BackwardWord(n, Word::Vi)), // vi-prev-word
KeyPress::Char('B') => Cmd::Move(Movement::BackwardWord(n, Word::Big)),
KeyPress::Char('c') => {
- self.insert = true;
- match try!(self.vi_cmd_motion(rdr, key, n)) {
- Some(mvt) => Cmd::Kill(mvt),
+ self.input_mode = InputMode::Insert;
+ match try!(self.vi_cmd_motion(rdr, wrt, key, n)) {
+ Some(mvt) => Cmd::Replace(mvt, None),
None => Cmd::Unknown,
}
}
KeyPress::Char('C') => {
- self.insert = true;
- Cmd::Kill(Movement::EndOfLine)
+ self.input_mode = InputMode::Insert;
+ Cmd::Replace(Movement::EndOfLine, None)
}
KeyPress::Char('d') => {
- match try!(self.vi_cmd_motion(rdr, key, n)) {
+ match try!(self.vi_cmd_motion(rdr, wrt, key, n)) {
Some(mvt) => Cmd::Kill(mvt),
None => Cmd::Unknown,
}
@@ -431,12 +568,14 @@
KeyPress::Char('E') => Cmd::Move(Movement::ForwardWord(n, At::BeforeEnd, Word::Big)),
KeyPress::Char('i') => {
// vi-insertion-mode
- self.insert = true;
+ self.input_mode = InputMode::Insert;
+ wrt.doing_insert();
Cmd::Noop
}
KeyPress::Char('I') => {
// vi-insert-beg
- self.insert = true;
+ self.input_mode = InputMode::Insert;
+ wrt.doing_insert();
Cmd::Move(Movement::BeginningOfLine)
}
KeyPress::Char(c) if c == 'f' || c == 'F' || c == 't' || c == 'T' => {
@@ -449,7 +588,7 @@
}
KeyPress::Char(';') => {
match self.last_char_search {
- Some(ref cs) => Cmd::Move(Movement::ViCharSearch(n, cs.clone())),
+ Some(cs) => Cmd::Move(Movement::ViCharSearch(n, cs)),
None => Cmd::Noop,
}
}
@@ -463,32 +602,37 @@
KeyPress::Char('p') => Cmd::Yank(n, Anchor::After), // vi-put
KeyPress::Char('P') => Cmd::Yank(n, Anchor::Before), // vi-put
KeyPress::Char('r') => {
- // vi-replace-char: Vi replace character under the cursor with the next character typed.
- let ch = try!(rdr.next_key());
+ // vi-replace-char:
+ let ch = try!(rdr.next_key(false));
match ch {
- KeyPress::Char(c) => Cmd::Replace(n, c),
+ KeyPress::Char(c) => Cmd::ReplaceChar(n, c),
KeyPress::Esc => Cmd::Noop,
_ => Cmd::Unknown,
}
}
- // TODO KeyPress::Char('R') => Cmd::???, vi-replace-mode: Vi enter replace mode. Replaces characters under the cursor. (overwrite-mode)
+ KeyPress::Char('R') => {
+ // vi-replace-mode (overwrite-mode)
+ self.input_mode = InputMode::Replace;
+ Cmd::Replace(Movement::ForwardChar(0), None)
+ }
KeyPress::Char('s') => {
- // vi-substitute-char: Vi replace character under the cursor and enter insert mode.
- self.insert = true;
- Cmd::Kill(Movement::ForwardChar(n))
+ // vi-substitute-char:
+ self.input_mode = InputMode::Insert;
+ Cmd::Replace(Movement::ForwardChar(n), None)
}
KeyPress::Char('S') => {
- // vi-substitute-line: Vi substitute entire line.
- self.insert = true;
- Cmd::Kill(Movement::WholeLine)
+ // vi-substitute-line:
+ self.input_mode = InputMode::Insert;
+ Cmd::Replace(Movement::WholeLine, None)
}
+ KeyPress::Char('u') => Cmd::Undo(n),
// KeyPress::Char('U') => Cmd::???, // revert-line
KeyPress::Char('w') => Cmd::Move(Movement::ForwardWord(n, At::Start, Word::Vi)), // vi-next-word
KeyPress::Char('W') => Cmd::Move(Movement::ForwardWord(n, At::Start, Word::Big)), // vi-next-word
KeyPress::Char('x') => Cmd::Kill(Movement::ForwardChar(n)), // vi-delete: TODO move backward if eol
KeyPress::Char('X') => Cmd::Kill(Movement::BackwardChar(n)), // vi-rubout
KeyPress::Char('y') => {
- match try!(self.vi_cmd_motion(rdr, key, n)) {
+ match try!(self.vi_cmd_motion(rdr, wrt, key, n)) {
Some(mvt) => Cmd::ViYankTo(mvt),
None => Cmd::Unknown,
}
@@ -508,11 +652,11 @@
KeyPress::Char('k') | // TODO: move to the start of the line.
KeyPress::Ctrl('P') => Cmd::PreviousHistory,
KeyPress::Ctrl('R') => {
- self.insert = true; // TODO Validate
+ self.input_mode = InputMode::Insert; // TODO Validate
Cmd::ReverseSearchHistory
}
KeyPress::Ctrl('S') => {
- self.insert = true; // TODO Validate
+ self.input_mode = InputMode::Insert; // TODO Validate
Cmd::ForwardSearchHistory
}
KeyPress::Esc => Cmd::Noop,
@@ -520,130 +664,137 @@
};
debug!(target: "rustyline", "Vi command: {:?}", cmd);
if cmd.is_repeatable_change() {
- self.update_last_cmd(cmd.clone());
+ self.last_cmd = cmd.clone();
}
Ok(cmd)
}
- fn vi_insert<R: RawReader>(&mut self, rdr: &mut R) -> Result<Cmd> {
- let key = try!(rdr.next_key());
- if let Some(cmd) = self.custom_bindings.borrow().get(&key) {
- debug!(target: "rustyline", "Custom command: {:?}", cmd);
- return Ok(if cmd.is_repeatable() {
- cmd.redo(None)
- } else {
- cmd.clone()
- });
+ fn vi_insert<R: RawReader>(&mut self, rdr: &mut R, wrt: &mut Refresher) -> Result<Cmd> {
+ let key = try!(rdr.next_key(false));
+ {
+ let bindings = self.custom_bindings.read().unwrap();
+ if let Some(cmd) = bindings.get(&key) {
+ debug!(target: "rustyline", "Custom command: {:?}", cmd);
+ return Ok(if cmd.is_repeatable() {
+ cmd.redo(None, wrt)
+ } else {
+ cmd.clone()
+ });
+ }
}
let cmd = match key {
- KeyPress::Char(c) => Cmd::SelfInsert(1, c),
- KeyPress::Ctrl('H') |
- KeyPress::Backspace => Cmd::Kill(Movement::BackwardChar(1)),
+ KeyPress::Char(c) => if self.input_mode == InputMode::Replace {
+ Cmd::Overwrite(c)
+ } else {
+ Cmd::SelfInsert(1, c)
+ },
+ KeyPress::Ctrl('H') | KeyPress::Backspace => Cmd::Kill(Movement::BackwardChar(1)),
KeyPress::Tab => Cmd::Complete,
KeyPress::Esc => {
- // vi-movement-mode/vi-command-mode: Vi enter command mode (use alternative key bindings).
- self.insert = false;
+ // vi-movement-mode/vi-command-mode
+ self.input_mode = InputMode::Command;
+ wrt.done_inserting();
Cmd::Move(Movement::BackwardChar(1))
}
_ => self.common(key, 1, true),
};
debug!(target: "rustyline", "Vi insert: {:?}", cmd);
if cmd.is_repeatable_change() {
- self.update_last_cmd(cmd.clone());
+ if let (Cmd::Replace(_, _), Cmd::SelfInsert(_, _)) = (&self.last_cmd, &cmd) {
+ // replacing...
+ } else if let (Cmd::SelfInsert(_, _), Cmd::SelfInsert(_, _)) = (&self.last_cmd, &cmd) {
+ // inserting...
+ } else {
+ self.last_cmd = cmd.clone();
+ }
}
- self.consecutive_insert = match cmd {
- Cmd::SelfInsert(_, _) => true,
- _ => false,
- };
Ok(cmd)
}
- fn vi_cmd_motion<R: RawReader>(&mut self,
- rdr: &mut R,
- key: KeyPress,
- n: RepeatCount)
- -> Result<Option<Movement>> {
- let mut mvt = try!(rdr.next_key());
+ fn vi_cmd_motion<R: RawReader>(
+ &mut self,
+ rdr: &mut R,
+ wrt: &mut Refresher,
+ key: KeyPress,
+ n: RepeatCount,
+ ) -> Result<Option<Movement>> {
+ let mut mvt = try!(rdr.next_key(false));
if mvt == key {
return Ok(Some(Movement::WholeLine));
}
let mut n = n;
if let KeyPress::Char(digit @ '1'...'9') = mvt {
// vi-arg-digit
- mvt = try!(self.vi_arg_digit(rdr, digit));
+ mvt = try!(self.vi_arg_digit(rdr, wrt, digit));
n = self.vi_num_args().saturating_mul(n);
}
Ok(match mvt {
- KeyPress::Char('$') => Some(Movement::EndOfLine), // vi-change-to-eol: Vi change to end of line.
- KeyPress::Char('0') => Some(Movement::BeginningOfLine), // vi-kill-line-prev: Vi cut from beginning of line to cursor.
- KeyPress::Char('^') => Some(Movement::ViFirstPrint),
- KeyPress::Char('b') => Some(Movement::BackwardWord(n, Word::Vi)),
- KeyPress::Char('B') => Some(Movement::BackwardWord(n, Word::Big)),
- KeyPress::Char('e') => Some(Movement::ForwardWord(n, At::AfterEnd, Word::Vi)),
- KeyPress::Char('E') => Some(Movement::ForwardWord(n, At::AfterEnd, Word::Big)),
- KeyPress::Char(c) if c == 'f' || c == 'F' || c == 't' || c == 'T' => {
- let cs = try!(self.vi_char_search(rdr, c));
- match cs {
+ KeyPress::Char('$') => Some(Movement::EndOfLine),
+ KeyPress::Char('0') => Some(Movement::BeginningOfLine),
+ KeyPress::Char('^') => Some(Movement::ViFirstPrint),
+ KeyPress::Char('b') => Some(Movement::BackwardWord(n, Word::Vi)),
+ KeyPress::Char('B') => Some(Movement::BackwardWord(n, Word::Big)),
+ KeyPress::Char('e') => Some(Movement::ForwardWord(n, At::AfterEnd, Word::Vi)),
+ KeyPress::Char('E') => Some(Movement::ForwardWord(n, At::AfterEnd, Word::Big)),
+ KeyPress::Char(c) if c == 'f' || c == 'F' || c == 't' || c == 'T' => {
+ let cs = try!(self.vi_char_search(rdr, c));
+ match cs {
+ Some(cs) => Some(Movement::ViCharSearch(n, cs)),
+ None => None,
+ }
+ }
+ KeyPress::Char(';') => match self.last_char_search {
Some(cs) => Some(Movement::ViCharSearch(n, cs)),
None => None,
+ },
+ KeyPress::Char(',') => match self.last_char_search {
+ Some(ref cs) => Some(Movement::ViCharSearch(n, cs.opposite())),
+ None => None,
+ },
+ KeyPress::Char('h') | KeyPress::Ctrl('H') | KeyPress::Backspace => {
+ Some(Movement::BackwardChar(n))
}
- }
- KeyPress::Char(';') => {
- match self.last_char_search {
- Some(ref cs) => Some(Movement::ViCharSearch(n, cs.clone())),
- None => None,
- }
- }
- KeyPress::Char(',') => {
- match self.last_char_search {
- Some(ref cs) => Some(Movement::ViCharSearch(n, cs.opposite())),
- None => None,
- }
- }
- KeyPress::Char('h') |
- KeyPress::Ctrl('H') |
- KeyPress::Backspace => Some(Movement::BackwardChar(n)), // vi-delete-prev-char: Vi move to previous character (backspace).
- KeyPress::Char('l') |
- KeyPress::Char(' ') => Some(Movement::ForwardChar(n)),
- KeyPress::Char('w') => {
- // 'cw' is 'ce'
- if key == KeyPress::Char('c') {
- Some(Movement::ForwardWord(n, At::AfterEnd, Word::Vi))
- } else {
- Some(Movement::ForwardWord(n, At::Start, Word::Vi))
+ KeyPress::Char('l') | KeyPress::Char(' ') => Some(Movement::ForwardChar(n)),
+ KeyPress::Char('w') => {
+ // 'cw' is 'ce'
+ if key == KeyPress::Char('c') {
+ Some(Movement::ForwardWord(n, At::AfterEnd, Word::Vi))
+ } else {
+ Some(Movement::ForwardWord(n, At::Start, Word::Vi))
+ }
}
- }
- KeyPress::Char('W') => {
- // 'cW' is 'cE'
- if key == KeyPress::Char('c') {
- Some(Movement::ForwardWord(n, At::AfterEnd, Word::Big))
- } else {
- Some(Movement::ForwardWord(n, At::Start, Word::Big))
+ KeyPress::Char('W') => {
+ // 'cW' is 'cE'
+ if key == KeyPress::Char('c') {
+ Some(Movement::ForwardWord(n, At::AfterEnd, Word::Big))
+ } else {
+ Some(Movement::ForwardWord(n, At::Start, Word::Big))
+ }
}
- }
- _ => None,
- })
+ _ => None,
+ })
}
- fn vi_char_search<R: RawReader>(&mut self,
- rdr: &mut R,
- cmd: char)
- -> Result<Option<CharSearch>> {
- let ch = try!(rdr.next_key());
+ fn vi_char_search<R: RawReader>(
+ &mut self,
+ rdr: &mut R,
+ cmd: char,
+ ) -> Result<Option<CharSearch>> {
+ let ch = try!(rdr.next_key(false));
Ok(match ch {
- KeyPress::Char(ch) => {
- let cs = match cmd {
- 'f' => CharSearch::Forward(ch),
- 't' => CharSearch::ForwardBefore(ch),
- 'F' => CharSearch::Backward(ch),
- 'T' => CharSearch::BackwardAfter(ch),
- _ => unreachable!(),
- };
- self.last_char_search = Some(cs.clone());
- Some(cs)
- }
- _ => None,
- })
+ KeyPress::Char(ch) => {
+ let cs = match cmd {
+ 'f' => CharSearch::Forward(ch),
+ 't' => CharSearch::ForwardBefore(ch),
+ 'F' => CharSearch::Backward(ch),
+ 'T' => CharSearch::BackwardAfter(ch),
+ _ => unreachable!(),
+ };
+ self.last_char_search = Some(cs);
+ Some(cs)
+ }
+ _ => None,
+ })
}
fn common(&mut self, key: KeyPress, n: RepeatCount, positive: bool) -> Cmd {
@@ -682,9 +833,9 @@
KeyPress::Ctrl('T') => Cmd::TransposeChars,
KeyPress::Ctrl('U') => {
if positive {
- Cmd::Kill(Movement::BeginningOfLine)
+ Cmd::Kill(Movement::BeginningOfLine)
} else {
- Cmd::Kill(Movement::EndOfLine)
+ Cmd::Kill(Movement::EndOfLine)
}
},
KeyPress::Ctrl('Q') | // most terminals override Ctrl+Q to resume execution
@@ -704,6 +855,7 @@
}
}
KeyPress::Ctrl('Z') => Cmd::Suspend,
+ KeyPress::Ctrl('_') => Cmd::Undo(n),
KeyPress::UnknownEscSeq => Cmd::Noop,
_ => Cmd::Unknown,
}
@@ -739,26 +891,4 @@
num_args.abs() as RepeatCount
}
}
-
- fn update_last_cmd(&mut self, new: Cmd) {
- // consecutive char inserts are repeatable not only the last one...
- if !self.consecutive_insert {
- self.last_cmd = new;
- } else if let Cmd::SelfInsert(_, c) = new {
- match self.last_cmd {
- Cmd::SelfInsert(_, pc) => {
- let mut text = String::new();
- text.push(pc);
- text.push(c);
- self.last_cmd = Cmd::Insert(1, text);
- }
- Cmd::Insert(_, ref mut text) => {
- text.push(c);
- }
- _ => self.last_cmd = new,
- }
- } else {
- self.last_cmd = new;
- }
- }
}
diff --git a/src/kill_ring.rs b/src/kill_ring.rs
index 635cb4f..15b6649 100644
--- a/src/kill_ring.rs
+++ b/src/kill_ring.rs
@@ -1,4 +1,5 @@
-//! Kill Ring
+//! Kill Ring management
+use line_buffer::{DeleteListener, Direction};
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
enum Action {
@@ -19,6 +20,7 @@
index: usize,
// whether or not the last command was a kill or a yank
last_action: Action,
+ killing: bool,
}
impl KillRing {
@@ -28,6 +30,7 @@
slots: Vec::with_capacity(size),
index: 0,
last_action: Action::Other,
+ killing: false,
}
}
@@ -102,9 +105,28 @@
}
}
+impl DeleteListener for KillRing {
+ fn start_killing(&mut self) {
+ self.killing = true;
+ }
+ fn delete(&mut self, _: usize, string: &str, dir: Direction) {
+ if !self.killing {
+ return;
+ }
+ let mode = match dir {
+ Direction::Forward => Mode::Append,
+ Direction::Backward => Mode::Prepend,
+ };
+ self.kill(string, mode);
+ }
+ fn stop_killing(&mut self) {
+ self.killing = false;
+ }
+}
+
#[cfg(test)]
mod tests {
- use super::{Action, Mode, KillRing};
+ use super::{Action, KillRing, Mode};
#[test]
fn disabled() {
@@ -187,9 +209,9 @@
kill_ring.reset();
kill_ring.kill("word2", Mode::Append);
- assert_eq!(Some(&"word2".to_string()), kill_ring.yank());
+ assert_eq!(Some(&"word2".to_owned()), kill_ring.yank());
assert_eq!(Action::Yank(5), kill_ring.last_action);
- assert_eq!(Some(&"word2".to_string()), kill_ring.yank());
+ assert_eq!(Some(&"word2".to_owned()), kill_ring.yank());
assert_eq!(Action::Yank(5), kill_ring.last_action);
}
@@ -202,8 +224,8 @@
assert_eq!(None, kill_ring.yank_pop());
kill_ring.yank();
- assert_eq!(Some((9, &"word1".to_string())), kill_ring.yank_pop());
- assert_eq!(Some((5, &"longword2".to_string())), kill_ring.yank_pop());
- assert_eq!(Some((9, &"word1".to_string())), kill_ring.yank_pop());
+ assert_eq!(Some((9, &"word1".to_owned())), kill_ring.yank_pop());
+ assert_eq!(Some((5, &"longword2".to_owned())), kill_ring.yank_pop());
+ assert_eq!(Some((9, &"word1".to_owned())), kill_ring.yank_pop());
}
}
diff --git a/src/lib.rs b/src/lib.rs
index 24829e0..3fb9a2a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,6 +1,7 @@
//! Readline for Rust
//!
-//! This implementation is based on [Antirez's Linenoise](https://github.com/antirez/linenoise)
+//! This implementation is based on [Antirez's
+//! Linenoise](https://github.com/antirez/linenoise)
//!
//! # Example
//!
@@ -10,625 +11,79 @@
//! let mut rl = rustyline::Editor::<()>::new();
//! let readline = rl.readline(">> ");
//! match readline {
-//! Ok(line) => println!("Line: {:?}",line),
-//! Err(_) => println!("No input"),
+//! Ok(line) => println!("Line: {:?}", line),
+//! Err(_) => println!("No input"),
//! }
//! ```
#![allow(unknown_lints)]
extern crate libc;
-extern crate encode_unicode;
#[macro_use]
extern crate log;
-extern crate unicode_segmentation;
-extern crate unicode_width;
#[cfg(unix)]
extern crate nix;
+extern crate unicode_segmentation;
+extern crate unicode_width;
#[cfg(windows)]
extern crate winapi;
-#[cfg(windows)]
-extern crate kernel32;
pub mod completion;
+pub mod config;
mod consts;
+mod edit;
pub mod error;
+pub mod hint;
pub mod history;
mod keymap;
mod kill_ring;
pub mod line_buffer;
-#[cfg(unix)]
-mod char_iter;
-pub mod config;
+mod undo;
mod tty;
-use std::cell::RefCell;
use std::collections::HashMap;
use std::fmt;
use std::io::{self, Write};
-use std::mem;
use std::path::Path;
-use std::rc::Rc;
use std::result;
-use unicode_segmentation::UnicodeSegmentation;
-use unicode_width::{UnicodeWidthChar, UnicodeWidthStr};
+use std::sync::{Arc, Mutex, RwLock};
+use unicode_width::UnicodeWidthStr;
-use tty::{RawMode, RawReader, Terminal, Term};
+use tty::{RawMode, RawReader, Renderer, Term, Terminal};
-use encode_unicode::CharExt;
-use completion::{Completer, longest_common_prefix};
-use history::{Direction, History};
-use line_buffer::{LineBuffer, MAX_LINE, WordAction};
-pub use keymap::{Anchor, At, CharSearch, Cmd, Movement, RepeatCount, Word};
-use keymap::EditState;
-use kill_ring::{Mode, KillRing};
+use completion::{longest_common_prefix, Completer};
pub use config::{CompletionType, Config, EditMode, HistoryDuplicates};
pub use consts::KeyPress;
+use edit::State;
+use hint::Hinter;
+use history::{Direction, History};
+pub use keymap::{Anchor, At, CharSearch, Cmd, Movement, RepeatCount, Word};
+use keymap::{InputState, Refresher};
+use kill_ring::{KillRing, Mode};
+use line_buffer::WordAction;
/// The error type for I/O and Linux Syscalls (Errno)
pub type Result<T> = result::Result<T, error::ReadlineError>;
-// Represent the state during line editing.
-struct State<'out, 'prompt> {
- out: &'out mut Write,
- prompt: &'prompt str, // Prompt to display
- prompt_size: Position, // Prompt Unicode width and height
- line: LineBuffer, // Edited line buffer
- cursor: Position, // Cursor position (relative to the start of the prompt for `row`)
- cols: usize, // Number of columns in terminal
- old_rows: usize, // Number of rows used so far (from start of prompt to end of input)
- history_index: usize, // The history index we are currently editing
- snapshot: LineBuffer, // Current edited line before history browsing/completion
- term: Terminal, // terminal
- edit_state: EditState,
-}
-
-#[derive(Copy, Clone, Debug, Default)]
-struct Position {
- col: usize,
- row: usize,
-}
-
-impl<'out, 'prompt> State<'out, 'prompt> {
- fn new(out: &'out mut Write,
- term: Terminal,
- config: &Config,
- prompt: &'prompt str,
- history_index: usize,
- custom_bindings: Rc<RefCell<HashMap<KeyPress, Cmd>>>)
- -> State<'out, 'prompt> {
- let capacity = MAX_LINE;
- let cols = term.get_columns();
- let prompt_size = calculate_position(prompt, Position::default(), cols);
- State {
- out: out,
- prompt: prompt,
- prompt_size: prompt_size,
- line: LineBuffer::with_capacity(capacity),
- cursor: prompt_size,
- cols: cols,
- old_rows: prompt_size.row,
- history_index: history_index,
- snapshot: LineBuffer::with_capacity(capacity),
- term: term,
- edit_state: EditState::new(config, custom_bindings),
- }
- }
-
- fn next_cmd<R: RawReader>(&mut self, rdr: &mut R) -> Result<Cmd> {
- loop {
- let rc = self.edit_state.next_cmd(rdr);
- if rc.is_err() && self.term.sigwinch() {
- self.update_columns();
- try!(self.refresh_line());
- continue;
- }
- return rc;
- }
- }
-
- fn snapshot(&mut self) {
- mem::swap(&mut self.line, &mut self.snapshot);
- }
-
- fn backup(&mut self) {
- self.snapshot.backup(&self.line);
- }
-
- /// Rewrite the currently edited line accordingly to the buffer content,
- /// cursor position, and number of columns of the terminal.
- fn refresh_line(&mut self) -> Result<()> {
- let prompt_size = self.prompt_size;
- self.refresh(self.prompt, prompt_size)
- }
-
- fn refresh_prompt_and_line(&mut self, prompt: &str) -> Result<()> {
- let prompt_size = calculate_position(prompt, Position::default(), self.cols);
- self.refresh(prompt, prompt_size)
- }
-
- #[cfg(unix)]
- fn refresh(&mut self, prompt: &str, prompt_size: Position) -> Result<()> {
- use std::fmt::Write;
-
- // calculate the position of the end of the input line
- let end_pos = calculate_position(&self.line, prompt_size, self.cols);
- // calculate the desired position of the cursor
- let cursor = calculate_position(&self.line[..self.line.pos()], prompt_size, self.cols);
-
- let mut ab = String::new();
-
- let cursor_row_movement = self.old_rows - self.cursor.row;
- // move the cursor down as required
- if cursor_row_movement > 0 {
- write!(ab, "\x1b[{}B", cursor_row_movement).unwrap();
- }
- // clear old rows
- for _ in 0..self.old_rows {
- ab.push_str("\r\x1b[0K\x1b[1A");
- }
- // clear the line
- ab.push_str("\r\x1b[0K");
-
- // display the prompt
- ab.push_str(prompt);
- // display the input line
- ab.push_str(&self.line);
- // we have to generate our own newline on line wrap
- if end_pos.col == 0 && end_pos.row > 0 {
- ab.push_str("\n");
- }
- // position the cursor
- let cursor_row_movement = end_pos.row - cursor.row;
- // move the cursor up as required
- if cursor_row_movement > 0 {
- write!(ab, "\x1b[{}A", cursor_row_movement).unwrap();
- }
- // position the cursor within the line
- if cursor.col > 0 {
- write!(ab, "\r\x1b[{}C", cursor.col).unwrap();
- } else {
- ab.push('\r');
- }
-
- self.cursor = cursor;
- self.old_rows = end_pos.row;
-
- write_and_flush(self.out, ab.as_bytes())
- }
-
- #[cfg(windows)]
- fn refresh(&mut self, prompt: &str, prompt_size: Position) -> Result<()> {
- // calculate the position of the end of the input line
- let end_pos = calculate_position(&self.line, prompt_size, self.cols);
- // calculate the desired position of the cursor
- let cursor = calculate_position(&self.line[..self.line.pos()], prompt_size, self.cols);
-
- // position at the start of the prompt, clear to end of previous input
- let mut info = try!(self.term.get_console_screen_buffer_info());
- info.dwCursorPosition.X = 0;
- info.dwCursorPosition.Y -= self.cursor.row as i16;
- try!(self.term
- .set_console_cursor_position(info.dwCursorPosition));
- let mut _count = 0;
- try!(self.term
- .fill_console_output_character((info.dwSize.X * (self.old_rows as i16 + 1)) as
- u32,
- info.dwCursorPosition));
- let mut ab = String::new();
- // display the prompt
- ab.push_str(prompt); // TODO handle ansi escape code (SetConsoleTextAttribute)
- // display the input line
- ab.push_str(&self.line);
- try!(write_and_flush(self.out, ab.as_bytes()));
-
- // position the cursor
- let mut info = try!(self.term.get_console_screen_buffer_info());
- info.dwCursorPosition.X = cursor.col as i16;
- info.dwCursorPosition.Y -= (end_pos.row - cursor.row) as i16;
- try!(self.term
- .set_console_cursor_position(info.dwCursorPosition));
-
- self.cursor = cursor;
- self.old_rows = end_pos.row;
-
- Ok(())
- }
-
- fn update_columns(&mut self) {
- self.cols = self.term.get_columns();
- }
-}
-
-impl<'out, 'prompt> fmt::Debug for State<'out, 'prompt> {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- f.debug_struct("State")
- .field("prompt", &self.prompt)
- .field("prompt_size", &self.prompt_size)
- .field("buf", &self.line)
- .field("cursor", &self.cursor)
- .field("cols", &self.cols)
- .field("old_rows", &self.old_rows)
- .field("history_index", &self.history_index)
- .field("snapshot", &self.snapshot)
- .finish()
- }
-}
-
-fn write_and_flush(w: &mut Write, buf: &[u8]) -> Result<()> {
- try!(w.write_all(buf));
- try!(w.flush());
- Ok(())
-}
-
-/// Beep, used for completion when there is nothing to complete or when all
-/// the choices were already shown.
-fn beep() -> Result<()> {
- write_and_flush(&mut io::stderr(), b"\x07") // TODO bell-style
-}
-
-/// Calculate the number of columns and rows used to display `s` on a `cols` width terminal
-/// starting at `orig`.
-/// Control characters are treated as having zero width.
-/// Characters with 2 column width are correctly handled (not splitted).
-#[allow(if_same_then_else)]
-fn calculate_position(s: &str, orig: Position, cols: usize) -> Position {
- let mut pos = orig;
- let mut esc_seq = 0;
- for c in s.chars() {
- let cw = if esc_seq == 1 {
- if c == '[' {
- // CSI
- esc_seq = 2;
- } else {
- // two-character sequence
- esc_seq = 0;
- }
- None
- } else if esc_seq == 2 {
- if c == ';' || (c >= '0' && c <= '9') {
- } else if c == 'm' {
- // last
- esc_seq = 0;
- } else {
- // not supported
- esc_seq = 0;
- }
- None
- } else if c == '\x1b' {
- esc_seq = 1;
- None
- } else if c == '\n' {
- pos.col = 0;
- pos.row += 1;
- None
- } else {
- c.width()
- };
- if let Some(cw) = cw {
- pos.col += cw;
- if pos.col > cols {
- pos.row += 1;
- pos.col = cw;
- }
- }
- }
- if pos.col == cols {
- pos.col = 0;
- pos.row += 1;
- }
- pos
-}
-
-/// Insert the character `ch` at cursor current position.
-fn edit_insert(s: &mut State, ch: char, n: RepeatCount) -> Result<()> {
- if let Some(push) = s.line.insert(ch, n) {
- if push {
- if n == 1 && s.cursor.col + ch.width().unwrap_or(0) < s.cols {
- // Avoid a full update of the line in the trivial case.
- let cursor = calculate_position(&s.line[..s.line.pos()], s.prompt_size, s.cols);
- s.cursor = cursor;
- write_and_flush(s.out, ch.to_utf8().as_bytes())
- } else {
- s.refresh_line()
- }
- } else {
- s.refresh_line()
- }
- } else {
- Ok(())
- }
-}
-
-/// Replace a single (or n) character(s) under the cursor (Vi mode)
-fn edit_replace_char(s: &mut State, ch: char, n: RepeatCount) -> Result<()> {
- if let Some(chars) = s.line.delete(n) {
- let count = chars.graphemes(true).count();
- s.line.insert(ch, count);
- s.line.move_backward(1);
- s.refresh_line()
- } else {
- Ok(())
- }
-}
-
-// Yank/paste `text` at current position.
-fn edit_yank(s: &mut State, text: &str, anchor: Anchor, n: RepeatCount) -> Result<()> {
- if let Anchor::After = anchor {
- s.line.move_forward(1);
- }
- if s.line.yank(text, n).is_some() {
- if !s.edit_state.is_emacs_mode() {
- s.line.move_backward(1);
- }
- s.refresh_line()
- } else {
- Ok(())
- }
-}
-
-// Delete previously yanked text and yank/paste `text` at current position.
-fn edit_yank_pop(s: &mut State, yank_size: usize, text: &str) -> Result<()> {
- s.line.yank_pop(yank_size, text);
- edit_yank(s, text, Anchor::Before, 1)
-}
-
-/// Move cursor on the left.
-fn edit_move_backward(s: &mut State, n: RepeatCount) -> Result<()> {
- if s.line.move_backward(n) {
- s.refresh_line()
- } else {
- Ok(())
- }
-}
-
-/// Move cursor on the right.
-fn edit_move_forward(s: &mut State, n: RepeatCount) -> Result<()> {
- if s.line.move_forward(n) {
- s.refresh_line()
- } else {
- Ok(())
- }
-}
-
-/// Move cursor to the start of the line.
-fn edit_move_home(s: &mut State) -> Result<()> {
- if s.line.move_home() {
- s.refresh_line()
- } else {
- Ok(())
- }
-}
-
-/// Move cursor to the end of the line.
-fn edit_move_end(s: &mut State) -> Result<()> {
- if s.line.move_end() {
- s.refresh_line()
- } else {
- Ok(())
- }
-}
-
-/// Delete the character at the right of the cursor without altering the cursor
-/// position. Basically this is what happens with the "Delete" keyboard key.
-fn edit_delete(s: &mut State, n: RepeatCount) -> Result<()> {
- if s.line.delete(n).is_some() {
- s.refresh_line()
- } else {
- Ok(())
- }
-}
-
-/// Backspace implementation.
-fn edit_backspace(s: &mut State, n: RepeatCount) -> Result<()> {
- if s.line.backspace(n).is_some() {
- s.refresh_line()
- } else {
- Ok(())
- }
-}
-
-/// Kill the text from point to the end of the line.
-fn edit_kill_line(s: &mut State) -> Result<Option<String>> {
- if let Some(text) = s.line.kill_line() {
- try!(s.refresh_line());
- Ok(Some(text))
- } else {
- Ok(None)
- }
-}
-
-/// Kill backward from point to the beginning of the line.
-fn edit_discard_line(s: &mut State) -> Result<Option<String>> {
- if let Some(text) = s.line.discard_line() {
- try!(s.refresh_line());
- Ok(Some(text))
- } else {
- Ok(None)
- }
-}
-
-/// Exchange the char before cursor with the character at cursor.
-fn edit_transpose_chars(s: &mut State) -> Result<()> {
- if s.line.transpose_chars() {
- s.refresh_line()
- } else {
- Ok(())
- }
-}
-
-fn edit_move_to_prev_word(s: &mut State, word_def: Word, n: RepeatCount) -> Result<()> {
- if s.line.move_to_prev_word(word_def, n) {
- s.refresh_line()
- } else {
- Ok(())
- }
-}
-
-/// Delete the previous word, maintaining the cursor at the start of the
-/// current word.
-fn edit_delete_prev_word(s: &mut State, word_def: Word, n: RepeatCount) -> Result<Option<String>> {
- if let Some(text) = s.line.delete_prev_word(word_def, n) {
- try!(s.refresh_line());
- Ok(Some(text))
- } else {
- Ok(None)
- }
-}
-
-fn edit_move_to_next_word(s: &mut State, at: At, word_def: Word, n: RepeatCount) -> Result<()> {
- if s.line.move_to_next_word(at, word_def, n) {
- s.refresh_line()
- } else {
- Ok(())
- }
-}
-
-fn edit_move_to(s: &mut State, cs: CharSearch, n: RepeatCount) -> Result<()> {
- if s.line.move_to(cs, n) {
- s.refresh_line()
- } else {
- Ok(())
- }
-}
-
-/// Kill from the cursor to the end of the current word, or, if between words, to the end of the next word.
-fn edit_delete_word(s: &mut State,
- at: At,
- word_def: Word,
- n: RepeatCount)
- -> Result<Option<String>> {
- if let Some(text) = s.line.delete_word(at, word_def, n) {
- try!(s.refresh_line());
- Ok(Some(text))
- } else {
- Ok(None)
- }
-}
-
-fn edit_delete_to(s: &mut State, cs: CharSearch, n: RepeatCount) -> Result<Option<String>> {
- if let Some(text) = s.line.delete_to(cs, n) {
- try!(s.refresh_line());
- Ok(Some(text))
- } else {
- Ok(None)
- }
-}
-
-fn edit_word(s: &mut State, a: WordAction) -> Result<()> {
- if s.line.edit_word(a) {
- s.refresh_line()
- } else {
- Ok(())
- }
-}
-
-fn edit_transpose_words(s: &mut State, n: RepeatCount) -> Result<()> {
- if s.line.transpose_words(n) {
- s.refresh_line()
- } else {
- Ok(())
- }
-}
-
-/// Substitute the currently edited line with the next or previous history
-/// entry.
-fn edit_history_next(s: &mut State, history: &History, prev: bool) -> Result<()> {
- if history.is_empty() {
- return Ok(());
- }
- if s.history_index == history.len() {
- if prev {
- // Save the current edited line before to overwrite it
- s.snapshot();
- } else {
- return Ok(());
- }
- } else if s.history_index == 0 && prev {
- return Ok(());
- }
- if prev {
- s.history_index -= 1;
- } else {
- s.history_index += 1;
- }
- if s.history_index < history.len() {
- let buf = history.get(s.history_index).unwrap();
- s.line.update(buf, buf.len());
- } else {
- // Restore current edited line
- s.snapshot();
- }
- s.refresh_line()
-}
-
-fn edit_history_search(s: &mut State, history: &History, dir: Direction) -> Result<()> {
- if history.is_empty() {
- return beep();
- }
- if s.history_index == history.len() && dir == Direction::Forward {
- return beep();
- } else if s.history_index == 0 && dir == Direction::Reverse {
- return beep();
- }
- if dir == Direction::Reverse {
- s.history_index -= 1;
- } else {
- s.history_index += 1;
- }
- if let Some(history_index) =
- history.starts_with(&s.line.as_str()[..s.line.pos()], s.history_index, dir) {
- s.history_index = history_index;
- let buf = history.get(history_index).unwrap();
- s.line.update(buf, buf.len());
- s.refresh_line()
- } else {
- beep()
- }
-}
-
-/// Substitute the currently edited line with the first/last history entry.
-fn edit_history(s: &mut State, history: &History, first: bool) -> Result<()> {
- if history.is_empty() {
- return Ok(());
- }
- if s.history_index == history.len() {
- if first {
- // Save the current edited line before to overwrite it
- s.snapshot();
- } else {
- return Ok(());
- }
- } else if s.history_index == 0 && first {
- return Ok(());
- }
- if first {
- s.history_index = 0;
- let buf = history.get(s.history_index).unwrap();
- s.line.update(buf, buf.len());
- } else {
- s.history_index = history.len();
- // Restore current edited line
- s.snapshot();
- }
- s.refresh_line()
-}
-
/// Completes the line/word
-fn complete_line<R: RawReader>(rdr: &mut R,
- s: &mut State,
- completer: &Completer,
- config: &Config)
- -> Result<Option<Cmd>> {
+fn complete_line<R: RawReader, C: Completer>(
+ rdr: &mut R,
+ s: &mut State,
+ input_state: &mut InputState,
+ completer: &C,
+ config: &Config,
+) -> Result<Option<Cmd>> {
// get a list of completions
let (start, candidates) = try!(completer.complete(&s.line, s.line.pos()));
// if no completions, we are done
if candidates.is_empty() {
- try!(beep());
+ try!(s.out.beep());
Ok(None)
} else if CompletionType::Circular == config.completion_type() {
- // Save the current edited line before to overwrite it
- s.backup();
+ let mark = s.changes.borrow_mut().begin();
+ // Save the current edited line before overwriting it
+ let backup = s.line.as_str().to_owned();
+ let backup_pos = s.line.pos();
let mut cmd;
let mut i = 0;
loop {
@@ -638,31 +93,29 @@
try!(s.refresh_line());
} else {
// Restore current edited line
- s.snapshot();
+ s.line.update(&backup, backup_pos);
try!(s.refresh_line());
- s.snapshot();
}
- cmd = try!(s.next_cmd(rdr));
+ cmd = try!(s.next_cmd(input_state, rdr, true));
match cmd {
Cmd::Complete => {
i = (i + 1) % (candidates.len() + 1); // Circular
if i == candidates.len() {
- try!(beep());
+ try!(s.out.beep());
}
}
Cmd::Abort => {
// Re-show original buffer
- s.snapshot();
if i < candidates.len() {
+ s.line.update(&backup, backup_pos);
try!(s.refresh_line());
}
+ s.changes.borrow_mut().truncate(mark);
return Ok(None);
}
_ => {
- if i == candidates.len() {
- s.snapshot();
- }
+ s.changes.borrow_mut().end();
break;
}
}
@@ -671,7 +124,7 @@
} else if CompletionType::List == config.completion_type() {
// beep if ambiguous
if candidates.len() > 1 {
- try!(beep());
+ try!(s.out.beep());
}
if let Some(lcp) = longest_common_prefix(&candidates) {
// if we can extend the item, extend it and return to main loop
@@ -682,36 +135,37 @@
}
}
// we can't complete any further, wait for second tab
- let mut cmd = try!(s.next_cmd(rdr));
+ let mut cmd = try!(s.next_cmd(input_state, rdr, true));
// if any character other than tab, pass it to the main loop
if cmd != Cmd::Complete {
return Ok(Some(cmd));
}
// move cursor to EOL to avoid overwriting the command line
let save_pos = s.line.pos();
- try!(edit_move_end(s));
+ try!(s.edit_move_end());
s.line.set_pos(save_pos);
// we got a second tab, maybe show list of possible completions
let show_completions = if candidates.len() > config.completion_prompt_limit() {
let msg = format!("\nDisplay all {} possibilities? (y or n)", candidates.len());
- try!(write_and_flush(s.out, msg.as_bytes()));
+ try!(s.out.write_and_flush(msg.as_bytes()));
s.old_rows += 1;
- while cmd != Cmd::SelfInsert(1, 'y') && cmd != Cmd::SelfInsert(1, 'Y') &&
- cmd != Cmd::SelfInsert(1, 'n') &&
- cmd != Cmd::SelfInsert(1, 'N') &&
- cmd != Cmd::Kill(Movement::BackwardChar(1)) {
- cmd = try!(s.next_cmd(rdr));
+ while cmd != Cmd::SelfInsert(1, 'y')
+ && cmd != Cmd::SelfInsert(1, 'Y')
+ && cmd != Cmd::SelfInsert(1, 'n')
+ && cmd != Cmd::SelfInsert(1, 'N')
+ && cmd != Cmd::Kill(Movement::BackwardChar(1))
+ {
+ cmd = try!(s.next_cmd(input_state, rdr, false));
}
match cmd {
- Cmd::SelfInsert(1, 'y') |
- Cmd::SelfInsert(1, 'Y') => true,
+ Cmd::SelfInsert(1, 'y') | Cmd::SelfInsert(1, 'Y') => true,
_ => false,
}
} else {
true
};
if show_completions {
- page_completions(rdr, s, &candidates)
+ page_completions(rdr, s, input_state, &candidates)
} else {
try!(s.refresh_line());
Ok(None)
@@ -721,52 +175,57 @@
}
}
-fn page_completions<R: RawReader>(rdr: &mut R,
- s: &mut State,
- candidates: &[String])
- -> Result<Option<Cmd>> {
+fn page_completions<R: RawReader>(
+ rdr: &mut R,
+ s: &mut State,
+ input_state: &mut InputState,
+ candidates: &[String],
+) -> Result<Option<Cmd>> {
use std::cmp;
let min_col_pad = 2;
- let max_width = cmp::min(s.cols,
- candidates
- .into_iter()
- .map(|s| s.as_str().width())
- .max()
- .unwrap() + min_col_pad);
- let num_cols = s.cols / max_width;
+ let cols = s.out.get_columns();
+ let max_width = cmp::min(
+ cols,
+ candidates
+ .into_iter()
+ .map(|s| s.as_str().width())
+ .max()
+ .unwrap() + min_col_pad,
+ );
+ let num_cols = cols / max_width;
- let mut pause_row = s.term.get_rows() - 1;
+ let mut pause_row = s.out.get_rows() - 1;
let num_rows = (candidates.len() + num_cols - 1) / num_cols;
let mut ab = String::new();
for row in 0..num_rows {
if row == pause_row {
- try!(write_and_flush(s.out, b"\n--More--"));
+ try!(s.out.write_and_flush(b"\n--More--"));
let mut cmd = Cmd::Noop;
- while cmd != Cmd::SelfInsert(1, 'y') && cmd != Cmd::SelfInsert(1_, 'Y') &&
- cmd != Cmd::SelfInsert(1, 'n') &&
- cmd != Cmd::SelfInsert(1_, 'N') &&
- cmd != Cmd::SelfInsert(1, 'q') &&
- cmd != Cmd::SelfInsert(1, 'Q') &&
- cmd != Cmd::SelfInsert(1, ' ') &&
- cmd != Cmd::Kill(Movement::BackwardChar(1)) &&
- cmd != Cmd::AcceptLine {
- cmd = try!(s.next_cmd(rdr));
+ while cmd != Cmd::SelfInsert(1, 'y')
+ && cmd != Cmd::SelfInsert(1, 'Y')
+ && cmd != Cmd::SelfInsert(1, 'n')
+ && cmd != Cmd::SelfInsert(1, 'N')
+ && cmd != Cmd::SelfInsert(1, 'q')
+ && cmd != Cmd::SelfInsert(1, 'Q')
+ && cmd != Cmd::SelfInsert(1, ' ')
+ && cmd != Cmd::Kill(Movement::BackwardChar(1))
+ && cmd != Cmd::AcceptLine
+ {
+ cmd = try!(s.next_cmd(input_state, rdr, false));
}
match cmd {
- Cmd::SelfInsert(1, 'y') |
- Cmd::SelfInsert(1, 'Y') |
- Cmd::SelfInsert(1, ' ') => {
- pause_row += s.term.get_rows() - 1;
+ Cmd::SelfInsert(1, 'y') | Cmd::SelfInsert(1, 'Y') | Cmd::SelfInsert(1, ' ') => {
+ pause_row += s.out.get_rows() - 1;
}
Cmd::AcceptLine => {
pause_row += 1;
}
_ => break,
}
- try!(write_and_flush(s.out, b"\n"));
+ try!(s.out.write_and_flush(b"\n"));
} else {
- try!(write_and_flush(s.out, b"\n"));
+ try!(s.out.write_and_flush(b"\n"));
}
ab.clear();
for col in 0..num_cols {
@@ -782,23 +241,27 @@
}
}
}
- try!(write_and_flush(s.out, ab.as_bytes()));
+ try!(s.out.write_and_flush(ab.as_bytes()));
}
- try!(write_and_flush(s.out, b"\n"));
+ try!(s.out.write_and_flush(b"\n"));
try!(s.refresh_line());
Ok(None)
}
/// Incremental search
-fn reverse_incremental_search<R: RawReader>(rdr: &mut R,
- s: &mut State,
- history: &History)
- -> Result<Option<Cmd>> {
+fn reverse_incremental_search<R: RawReader>(
+ rdr: &mut R,
+ s: &mut State,
+ input_state: &mut InputState,
+ history: &History,
+) -> Result<Option<Cmd>> {
if history.is_empty() {
return Ok(None);
}
- // Save the current edited line (and cursor position) before to overwrite it
- s.snapshot();
+ let mark = s.changes.borrow_mut().begin();
+ // Save the current edited line (and cursor position) before overwriting it
+ let backup = s.line.as_str().to_owned();
+ let backup_pos = s.line.pos();
let mut search_buf = String::new();
let mut history_idx = history.len() - 1;
@@ -815,7 +278,7 @@
};
try!(s.refresh_prompt_and_line(&prompt));
- cmd = try!(s.next_cmd(rdr));
+ cmd = try!(s.next_cmd(input_state, rdr, true));
if let Cmd::SelfInsert(_, c) = cmd {
search_buf.push(c);
} else {
@@ -844,10 +307,15 @@
}
Cmd::Abort => {
// Restore current edited line (before search)
- s.snapshot();
+ s.line.update(&backup, backup_pos);
try!(s.refresh_line());
+ s.changes.borrow_mut().truncate(mark);
return Ok(None);
}
+ Cmd::Move(_) => {
+ try!(s.refresh_line()); // restore prompt
+ break;
+ }
_ => break,
}
}
@@ -862,6 +330,7 @@
_ => false,
};
}
+ s.changes.borrow_mut().end();
Ok(Some(cmd))
}
@@ -869,36 +338,50 @@
/// It will also handle special inputs in an appropriate fashion
/// (e.g., C-c will exit readline)
#[allow(let_unit_value)]
-fn readline_edit<C: Completer>(prompt: &str,
- editor: &mut Editor<C>,
- original_mode: tty::Mode)
- -> Result<String> {
- let completer = editor.completer.as_ref().map(|c| c as &Completer);
+fn readline_edit<H: Helper>(
+ prompt: &str,
+ initial: Option<(&str, &str)>,
+ editor: &mut Editor<H>,
+ original_mode: &tty::Mode,
+) -> Result<String> {
+ let completer = editor.helper.as_ref().map(|h| h.completer());
+ let hinter = editor.helper.as_ref().map(|h| h.hinter() as &Hinter);
let mut stdout = editor.term.create_writer();
- editor.kill_ring.reset();
- let mut s = State::new(&mut stdout,
- editor.term.clone(),
- &editor.config,
- prompt,
- editor.history.len(),
- editor.custom_bindings.clone());
+ editor.reset_kill_ring(); // TODO recreate a new kill ring vs Arc<Mutex<KillRing>>
+ let mut s = State::new(&mut stdout, prompt, editor.history.len(), hinter);
+ let mut input_state = InputState::new(&editor.config, Arc::clone(&editor.custom_bindings));
+
+ s.line.set_delete_listener(editor.kill_ring.clone());
+ s.line.set_change_listener(s.changes.clone());
+
+ if let Some((left, right)) = initial {
+ s.line
+ .update((left.to_owned() + right).as_ref(), left.len());
+ }
+
try!(s.refresh_line());
- let mut rdr = try!(s.term.create_reader(&editor.config));
+ let mut rdr = try!(editor.term.create_reader(&editor.config));
loop {
- let rc = s.next_cmd(&mut rdr);
+ let rc = s.next_cmd(&mut input_state, &mut rdr, false);
let mut cmd = try!(rc);
if cmd.should_reset_kill_ring() {
- editor.kill_ring.reset();
+ editor.reset_kill_ring();
}
// autocomplete
if cmd == Cmd::Complete && completer.is_some() {
- let next = try!(complete_line(&mut rdr, &mut s, completer.unwrap(), &editor.config));
+ let next = try!(complete_line(
+ &mut rdr,
+ &mut s,
+ &mut input_state,
+ completer.unwrap(),
+ &editor.config,
+ ));
if next.is_some() {
cmd = next.unwrap();
} else {
@@ -907,16 +390,21 @@
}
if let Cmd::SelfInsert(n, c) = cmd {
- try!(edit_insert(&mut s, c, n));
+ try!(s.edit_insert(c, n));
continue;
} else if let Cmd::Insert(n, text) = cmd {
- try!(edit_yank(&mut s, &text, Anchor::Before, n));
+ try!(s.edit_yank(&input_state, &text, Anchor::Before, n));
continue;
}
if cmd == Cmd::ReverseSearchHistory {
// Search history backward
- let next = try!(reverse_incremental_search(&mut rdr, &mut s, &editor.history));
+ let next = try!(reverse_incremental_search(
+ &mut rdr,
+ &mut s,
+ &mut input_state,
+ &editor.history,
+ ));
if next.is_some() {
cmd = next.unwrap();
} else {
@@ -927,164 +415,147 @@
match cmd {
Cmd::Move(Movement::BeginningOfLine) => {
// Move to the beginning of line.
- try!(edit_move_home(&mut s))
+ try!(s.edit_move_home())
}
Cmd::Move(Movement::ViFirstPrint) => {
- try!(edit_move_home(&mut s));
- try!(edit_move_to_next_word(&mut s, At::Start, Word::Big, 1))
+ try!(s.edit_move_home());
+ try!(s.edit_move_to_next_word(At::Start, Word::Big, 1))
}
Cmd::Move(Movement::BackwardChar(n)) => {
// Move back a character.
- try!(edit_move_backward(&mut s, n))
+ try!(s.edit_move_backward(n))
}
- Cmd::Kill(Movement::ForwardChar(n)) => {
- // Delete (forward) one character at point.
- try!(edit_delete(&mut s, n))
- }
- Cmd::Replace(n, c) => {
- try!(edit_replace_char(&mut s, c, n));
- }
- Cmd::EndOfFile => {
- if !s.edit_state.is_emacs_mode() && !s.line.is_empty() {
- try!(edit_move_end(&mut s));
- break;
- } else if s.line.is_empty() {
- return Err(error::ReadlineError::Eof);
- } else {
- try!(edit_delete(&mut s, 1))
+ Cmd::ReplaceChar(n, c) => try!(s.edit_replace_char(c, n)),
+ Cmd::Replace(mvt, text) => {
+ try!(s.edit_kill(&mvt));
+ if let Some(text) = text {
+ try!(s.edit_insert_text(&text))
}
}
+ Cmd::Overwrite(c) => {
+ try!(s.edit_overwrite_char(c));
+ }
+ Cmd::EndOfFile => if !input_state.is_emacs_mode() && !s.line.is_empty() {
+ try!(s.edit_move_end());
+ break;
+ } else if s.line.is_empty() {
+ return Err(error::ReadlineError::Eof);
+ } else {
+ try!(s.edit_delete(1))
+ },
Cmd::Move(Movement::EndOfLine) => {
// Move to the end of line.
- try!(edit_move_end(&mut s))
+ try!(s.edit_move_end())
}
Cmd::Move(Movement::ForwardChar(n)) => {
// Move forward a character.
- try!(edit_move_forward(&mut s, n))
- }
- Cmd::Kill(Movement::BackwardChar(n)) => {
- // Delete one character backward.
- try!(edit_backspace(&mut s, n))
- }
- Cmd::Kill(Movement::EndOfLine) => {
- // Kill the text from point to the end of the line.
- if let Some(text) = try!(edit_kill_line(&mut s)) {
- editor.kill_ring.kill(&text, Mode::Append)
- }
- }
- Cmd::Kill(Movement::WholeLine) => {
- try!(edit_move_home(&mut s));
- if let Some(text) = try!(edit_kill_line(&mut s)) {
- editor.kill_ring.kill(&text, Mode::Append)
- }
+ try!(s.edit_move_forward(n))
}
Cmd::ClearScreen => {
// Clear the screen leaving the current line at the top of the screen.
- try!(s.term.clear_screen(&mut s.out));
+ try!(s.out.clear_screen());
try!(s.refresh_line())
}
Cmd::NextHistory => {
// Fetch the next command from the history list.
- try!(edit_history_next(&mut s, &editor.history, false))
+ try!(s.edit_history_next(&editor.history, false))
}
Cmd::PreviousHistory => {
// Fetch the previous command from the history list.
- try!(edit_history_next(&mut s, &editor.history, true))
+ try!(s.edit_history_next(&editor.history, true))
}
Cmd::HistorySearchBackward => {
- try!(edit_history_search(&mut s, &editor.history, Direction::Reverse))
+ try!(s.edit_history_search(&editor.history, Direction::Reverse))
}
Cmd::HistorySearchForward => {
- try!(edit_history_search(&mut s, &editor.history, Direction::Forward))
+ try!(s.edit_history_search(&editor.history, Direction::Forward))
}
Cmd::TransposeChars => {
// Exchange the char before cursor with the character at cursor.
- try!(edit_transpose_chars(&mut s))
- }
- Cmd::Kill(Movement::BeginningOfLine) => {
- // Kill backward from point to the beginning of the line.
- if let Some(text) = try!(edit_discard_line(&mut s)) {
- editor.kill_ring.kill(&text, Mode::Prepend)
- }
+ try!(s.edit_transpose_chars())
}
#[cfg(unix)]
Cmd::QuotedInsert => {
// Quoted insert
let c = try!(rdr.next_char());
- try!(edit_insert(&mut s, c, 1)) // FIXME
+ try!(s.edit_insert(c, 1)) // FIXME
}
Cmd::Yank(n, anchor) => {
// retrieve (yank) last item killed
- if let Some(text) = editor.kill_ring.yank() {
- try!(edit_yank(&mut s, text, anchor, n))
+ let mut kill_ring = editor.kill_ring.lock().unwrap();
+ if let Some(text) = kill_ring.yank() {
+ try!(s.edit_yank(&input_state, text, anchor, n))
}
}
- Cmd::ViYankTo(mvt) => {
- if let Some(text) = s.line.copy(mvt) {
- editor.kill_ring.kill(&text, Mode::Append)
- }
- }
+ Cmd::ViYankTo(ref mvt) => if let Some(text) = s.line.copy(mvt) {
+ let mut kill_ring = editor.kill_ring.lock().unwrap();
+ kill_ring.kill(&text, Mode::Append)
+ },
// TODO CTRL-_ // undo
Cmd::AcceptLine => {
- // Accept the line regardless of where the cursor is.
- try!(edit_move_end(&mut s));
- break;
- }
- Cmd::Kill(Movement::BackwardWord(n, word_def)) => {
- // kill one word backward (until start of word)
- if let Some(text) = try!(edit_delete_prev_word(&mut s, word_def, n)) {
- editor.kill_ring.kill(&text, Mode::Prepend)
+ #[cfg(test)]
+ {
+ editor.term.cursor = s.cursor.col;
}
+ // Accept the line regardless of where the cursor is.
+ try!(s.edit_move_end());
+ if s.hinter.is_some() {
+ // Force a refresh without hints to leave the previous
+ // line as the user typed it after a newline.
+ s.hinter = None;
+ try!(s.refresh_line());
+ }
+ break;
}
Cmd::BeginningOfHistory => {
// move to first entry in history
- try!(edit_history(&mut s, &editor.history, true))
+ try!(s.edit_history(&editor.history, true))
}
Cmd::EndOfHistory => {
// move to last entry in history
- try!(edit_history(&mut s, &editor.history, false))
+ try!(s.edit_history(&editor.history, false))
}
Cmd::Move(Movement::BackwardWord(n, word_def)) => {
// move backwards one word
- try!(edit_move_to_prev_word(&mut s, word_def, n))
+ try!(s.edit_move_to_prev_word(word_def, n))
}
Cmd::CapitalizeWord => {
// capitalize word after point
- try!(edit_word(&mut s, WordAction::CAPITALIZE))
+ try!(s.edit_word(WordAction::CAPITALIZE))
}
- Cmd::Kill(Movement::ForwardWord(n, at, word_def)) => {
- // kill one word forward (until start/end of word)
- if let Some(text) = try!(edit_delete_word(&mut s, at, word_def, n)) {
- editor.kill_ring.kill(&text, Mode::Append)
- }
+ Cmd::Kill(ref mvt) => {
+ try!(s.edit_kill(mvt));
}
Cmd::Move(Movement::ForwardWord(n, at, word_def)) => {
// move forwards one word
- try!(edit_move_to_next_word(&mut s, at, word_def, n))
+ try!(s.edit_move_to_next_word(at, word_def, n))
}
Cmd::DowncaseWord => {
// lowercase word after point
- try!(edit_word(&mut s, WordAction::LOWERCASE))
+ try!(s.edit_word(WordAction::LOWERCASE))
}
Cmd::TransposeWords(n) => {
// transpose words
- try!(edit_transpose_words(&mut s, n))
+ try!(s.edit_transpose_words(n))
}
Cmd::UpcaseWord => {
// uppercase word after point
- try!(edit_word(&mut s, WordAction::UPPERCASE))
+ try!(s.edit_word(WordAction::UPPERCASE))
}
Cmd::YankPop => {
// yank-pop
- if let Some((yank_size, text)) = editor.kill_ring.yank_pop() {
- try!(edit_yank_pop(&mut s, yank_size, text))
+ let mut kill_ring = editor.kill_ring.lock().unwrap();
+ if let Some((yank_size, text)) = kill_ring.yank_pop() {
+ try!(s.edit_yank_pop(yank_size, text))
}
}
- Cmd::Move(Movement::ViCharSearch(n, cs)) => try!(edit_move_to(&mut s, cs, n)),
- Cmd::Kill(Movement::ViCharSearch(n, cs)) => {
- if let Some(text) = try!(edit_delete_to(&mut s, cs, n)) {
- editor.kill_ring.kill(&text, Mode::Append)
+ Cmd::Move(Movement::ViCharSearch(n, cs)) => try!(s.edit_move_to(cs, n)),
+ Cmd::Undo(n) => {
+ s.line.remove_change_listener();
+ if s.changes.borrow_mut().undo(&mut s.line, n) {
+ try!(s.refresh_line());
}
+ s.line.set_change_listener(s.changes.clone());
}
Cmd::Interrupt => {
return Err(error::ReadlineError::Interrupted);
@@ -1093,7 +564,7 @@
Cmd::Suspend => {
try!(original_mode.disable_raw_mode());
try!(tty::suspend());
- try!(s.term.enable_raw_mode()); // TODO original_mode may have changed
+ try!(editor.term.enable_raw_mode()); // TODO original_mode may have changed
try!(s.refresh_line());
continue;
}
@@ -1106,10 +577,10 @@
Ok(s.line.into_string())
}
-struct Guard(tty::Mode);
+struct Guard<'m>(&'m tty::Mode);
#[allow(unused_must_use)]
-impl Drop for Guard {
+impl<'m> Drop for Guard<'m> {
fn drop(&mut self) {
let Guard(mode) = *self;
mode.disable_raw_mode();
@@ -1118,12 +589,21 @@
/// Readline method that will enable RAW mode, call the `readline_edit()`
/// method and disable raw mode
-fn readline_raw<C: Completer>(prompt: &str, editor: &mut Editor<C>) -> Result<String> {
+fn readline_raw<H: Helper>(
+ prompt: &str,
+ initial: Option<(&str, &str)>,
+ editor: &mut Editor<H>,
+) -> Result<String> {
let original_mode = try!(editor.term.enable_raw_mode());
- let guard = Guard(original_mode);
- let user_input = readline_edit(prompt, editor, original_mode);
+ let guard = Guard(&original_mode);
+ let user_input = readline_edit(prompt, initial, editor, &original_mode);
+ if editor.config.auto_add_history() {
+ if let Ok(ref line) = user_input {
+ editor.add_history_entry(line.as_ref());
+ }
+ }
drop(guard); // try!(disable_raw_mode(original_mode));
- println!("");
+ println!();
user_input
}
@@ -1136,40 +616,96 @@
}
}
-/// Line editor
-pub struct Editor<C: Completer> {
- term: Terminal,
- history: History,
- completer: Option<C>,
- kill_ring: KillRing,
- config: Config,
- custom_bindings: Rc<RefCell<HashMap<KeyPress, Cmd>>>,
+/// Syntax specific helper.
+///
+/// TODO Tokenizer/parser used for both completion, suggestion, highlighting
+pub trait Helper {
+ type Completer: Completer;
+ type Hinter: Hinter;
+
+ fn completer(&self) -> &Self::Completer;
+ fn hinter(&self) -> &Self::Hinter;
}
-impl<C: Completer> Editor<C> {
- pub fn new() -> Editor<C> {
+impl<C: Completer, H: Hinter> Helper for (C, H) {
+ type Completer = C;
+ type Hinter = H;
+
+ fn completer(&self) -> &C {
+ &self.0
+ }
+ fn hinter(&self) -> &H {
+ &self.1
+ }
+}
+impl<C: Completer> Helper for C {
+ type Completer = C;
+ type Hinter = ();
+
+ fn completer(&self) -> &C {
+ self
+ }
+ fn hinter(&self) -> &() {
+ &()
+ }
+}
+
+/// Line editor
+pub struct Editor<H: Helper> {
+ term: Terminal,
+ history: History,
+ helper: Option<H>,
+ kill_ring: Arc<Mutex<KillRing>>,
+ config: Config,
+ custom_bindings: Arc<RwLock<HashMap<KeyPress, Cmd>>>,
+}
+
+impl<H: Helper> Editor<H> {
+ /// Create an editor with the default configuration
+ pub fn new() -> Editor<H> {
Self::with_config(Config::default())
}
- pub fn with_config(config: Config) -> Editor<C> {
+ /// Create an editor with a specific configuration.
+ pub fn with_config(config: Config) -> Editor<H> {
let term = Terminal::new();
Editor {
- term: term,
+ term,
history: History::with_config(config),
- completer: None,
- kill_ring: KillRing::new(60),
- config: config,
- custom_bindings: Rc::new(RefCell::new(HashMap::new())),
+ helper: None,
+ kill_ring: Arc::new(Mutex::new(KillRing::new(60))),
+ config,
+ custom_bindings: Arc::new(RwLock::new(HashMap::new())),
}
}
- /// This method will read a line from STDIN and will display a `prompt`
+ /// This method will read a line from STDIN and will display a `prompt`.
+ ///
+ /// It uses terminal-style interaction if `stdin` is connected to a
+ /// terminal.
+ /// Otherwise (e.g., if `stdin` is a pipe or the terminal is not supported),
+ /// it uses file-style interaction.
pub fn readline(&mut self, prompt: &str) -> Result<String> {
+ self.readline_with(prompt, None)
+ }
+ /// This function behaves in the exact same manner as `readline`, except
+ /// that it pre-populates the input area.
+ ///
+ /// The text that resides in the input area is given as a 2-tuple.
+ /// The string on the left of the tuple is what will appear to the left of
+ /// the cursor and the string on the right is what will appear to the
+ /// right of the cursor.
+ pub fn readline_with_initial(&mut self, prompt: &str, initial: (&str, &str)) -> Result<String> {
+ self.readline_with(prompt, Some(initial))
+ }
+
+ fn readline_with(&mut self, prompt: &str, initial: Option<(&str, &str)>) -> Result<String> {
if self.term.is_unsupported() {
debug!(target: "rustyline", "unsupported terminal");
// Write prompt and flush it to stdout
let mut stdout = io::stdout();
- try!(write_and_flush(&mut stdout, prompt.as_bytes()));
+ try!(stdout.write_all(prompt.as_bytes()));
+ try!(stdout.flush());
readline_direct()
} else if !self.term.is_stdin_tty() {
@@ -1177,7 +713,7 @@
// Not a tty: read from file / pipe.
readline_direct()
} else {
- readline_raw(prompt, self)
+ readline_raw(prompt, initial, self)
}
}
@@ -1206,18 +742,26 @@
&self.history
}
- /// Register a callback function to be called for tab-completion.
- pub fn set_completer(&mut self, completer: Option<C>) {
- self.completer = completer;
+ /// Register a callback function to be called for tab-completion
+ /// or to show hints to the user at the right of the prompt.
+ pub fn set_helper(&mut self, helper: Option<H>) {
+ self.helper = helper;
+ }
+
+ #[deprecated(since = "2.0.0", note = "Use set_helper instead")]
+ pub fn set_completer(&mut self, completer: Option<H>) {
+ self.helper = completer;
}
/// Bind a sequence to a command.
pub fn bind_sequence(&mut self, key_seq: KeyPress, cmd: Cmd) -> Option<Cmd> {
- self.custom_bindings.borrow_mut().insert(key_seq, cmd)
+ let mut bindings = self.custom_bindings.write().unwrap();
+ bindings.insert(key_seq, cmd)
}
/// Remove a binding for the given sequence.
pub fn unbind_sequence(&mut self, key_seq: KeyPress) -> Option<Cmd> {
- self.custom_bindings.borrow_mut().remove(&key_seq)
+ let mut bindings = self.custom_bindings.write().unwrap();
+ bindings.remove(&key_seq)
}
/// ```
@@ -1226,23 +770,28 @@
/// match readline {
/// Ok(line) => {
/// println!("Line: {}", line);
- /// },
+ /// }
/// Err(err) => {
/// println!("Error: {:?}", err);
- /// break
+ /// break;
/// }
/// }
/// }
/// ```
- pub fn iter<'a>(&'a mut self, prompt: &'a str) -> Iter<C> {
+ pub fn iter<'a>(&'a mut self, prompt: &'a str) -> Iter<H> {
Iter {
editor: self,
- prompt: prompt,
+ prompt,
}
}
+
+ fn reset_kill_ring(&self) {
+ let mut kill_ring = self.kill_ring.lock().unwrap();
+ kill_ring.reset();
+ }
}
-impl<C: Completer> fmt::Debug for Editor<C> {
+impl<H: Helper> fmt::Debug for Editor<H> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_struct("Editor")
.field("term", &self.term)
@@ -1251,23 +800,22 @@
}
}
-pub struct Iter<'a, C: Completer>
- where C: 'a
+/// Edited lines iterator
+pub struct Iter<'a, H: Helper>
+where
+ H: 'a,
{
- editor: &'a mut Editor<C>,
+ editor: &'a mut Editor<H>,
prompt: &'a str,
}
-impl<'a, C: Completer> Iterator for Iter<'a, C> {
+impl<'a, H: Helper> Iterator for Iter<'a, H> {
type Item = Result<String>;
fn next(&mut self) -> Option<Result<String>> {
let readline = self.editor.readline(self.prompt);
match readline {
- Ok(l) => {
- self.editor.add_history_entry(l.as_ref()); // TODO Validate
- Some(Ok(l))
- }
+ Ok(l) => Some(Ok(l)),
Err(error::ReadlineError::Eof) => None,
e @ Err(_) => Some(e),
}
@@ -1275,177 +823,7 @@
}
#[cfg(test)]
-mod test {
- use std::cell::RefCell;
- use std::collections::HashMap;
- use std::io::Write;
- use std::rc::Rc;
- use line_buffer::LineBuffer;
- use history::History;
- use completion::Completer;
- use config::Config;
- use consts::KeyPress;
- use keymap::{Cmd, EditState};
- use super::{Editor, Position, Result, State};
- use tty::{Terminal, Term};
-
- fn init_state<'out>(out: &'out mut Write,
- line: &str,
- pos: usize,
- cols: usize)
- -> State<'out, 'static> {
- let term = Terminal::new();
- let config = Config::default();
- State {
- out: out,
- prompt: "",
- prompt_size: Position::default(),
- line: LineBuffer::init(line, pos),
- cursor: Position::default(),
- cols: cols,
- old_rows: 0,
- history_index: 0,
- snapshot: LineBuffer::with_capacity(100),
- term: term,
- edit_state: EditState::new(&config, Rc::new(RefCell::new(HashMap::new()))),
- }
- }
-
- fn init_editor(keys: &[KeyPress]) -> Editor<()> {
- let mut editor = Editor::<()>::new();
- editor.term.keys.extend(keys.iter().cloned());
- editor
- }
-
- #[test]
- fn edit_history_next() {
- let mut out = ::std::io::sink();
- let line = "current edited line";
- let mut s = init_state(&mut out, line, 6, 80);
- let mut history = History::new();
- history.add("line0");
- history.add("line1");
- s.history_index = history.len();
-
- for _ in 0..2 {
- super::edit_history_next(&mut s, &history, false).unwrap();
- assert_eq!(line, s.line.as_str());
- }
-
- super::edit_history_next(&mut s, &history, true).unwrap();
- assert_eq!(line, s.snapshot.as_str());
- assert_eq!(1, s.history_index);
- assert_eq!("line1", s.line.as_str());
-
- for _ in 0..2 {
- super::edit_history_next(&mut s, &history, true).unwrap();
- assert_eq!(line, s.snapshot.as_str());
- assert_eq!(0, s.history_index);
- assert_eq!("line0", s.line.as_str());
- }
-
- super::edit_history_next(&mut s, &history, false).unwrap();
- assert_eq!(line, s.snapshot.as_str());
- assert_eq!(1, s.history_index);
- assert_eq!("line1", s.line.as_str());
-
- super::edit_history_next(&mut s, &history, false).unwrap();
- // assert_eq!(line, s.snapshot);
- assert_eq!(2, s.history_index);
- assert_eq!(line, s.line.as_str());
- }
-
- struct SimpleCompleter;
- impl Completer for SimpleCompleter {
- fn complete(&self, line: &str, _pos: usize) -> Result<(usize, Vec<String>)> {
- Ok((0, vec![line.to_string() + "t"]))
- }
- }
-
- #[test]
- fn complete_line() {
- let mut out = ::std::io::sink();
- let mut s = init_state(&mut out, "rus", 3, 80);
- let keys = &[KeyPress::Enter];
- let mut rdr = keys.iter();
- let completer = SimpleCompleter;
- let cmd = super::complete_line(&mut rdr, &mut s, &completer, &Config::default()).unwrap();
- assert_eq!(Some(Cmd::AcceptLine), cmd);
- assert_eq!("rust", s.line.as_str());
- assert_eq!(4, s.line.pos());
- }
-
- #[test]
- fn prompt_with_ansi_escape_codes() {
- let pos = super::calculate_position("\x1b[1;32m>>\x1b[0m ", Position::default(), 80);
- assert_eq!(3, pos.col);
- assert_eq!(0, pos.row);
- }
-
- fn assert_line(keys: &[KeyPress], expected_line: &str) {
- let mut editor = init_editor(keys);
- let actual_line = editor.readline(&">>").unwrap();
- assert_eq!(expected_line, actual_line);
- }
-
- #[test]
- fn delete_key() {
- assert_line(&[KeyPress::Char('a'), KeyPress::Delete, KeyPress::Enter],
- "a");
- assert_line(&[KeyPress::Char('a'),
- KeyPress::Left,
- KeyPress::Delete,
- KeyPress::Enter],
- "");
- }
-
- #[test]
- fn down_key() {
- assert_line(&[KeyPress::Down, KeyPress::Enter], "");
- }
-
- #[test]
- fn end_key() {
- assert_line(&[KeyPress::End, KeyPress::Enter], "");
- }
-
- #[test]
- fn home_key() {
- assert_line(&[KeyPress::Home, KeyPress::Enter], "");
- }
-
- #[test]
- fn left_key() {
- assert_line(&[KeyPress::Left, KeyPress::Enter], "");
- }
-
- #[test]
- fn meta_backspace_key() {
- assert_line(&[KeyPress::Meta('\x08'), KeyPress::Enter], "");
- }
-
- #[test]
- fn page_down_key() {
- assert_line(&[KeyPress::PageDown, KeyPress::Enter], "");
- }
-
- #[test]
- fn page_up_key() {
- assert_line(&[KeyPress::PageUp, KeyPress::Enter], "");
- }
-
- #[test]
- fn right_key() {
- assert_line(&[KeyPress::Right, KeyPress::Enter], "");
- }
-
- #[test]
- fn up_key() {
- assert_line(&[KeyPress::Up, KeyPress::Enter], "");
- }
-
- #[test]
- fn unknown_esc_key() {
- assert_line(&[KeyPress::UnknownEscSeq, KeyPress::Enter], "");
- }
-}
+#[macro_use]
+extern crate assert_matches;
+#[cfg(test)]
+mod test;
diff --git a/src/line_buffer.rs b/src/line_buffer.rs
index 80699e2..7c16bb1 100644
--- a/src/line_buffer.rs
+++ b/src/line_buffer.rs
@@ -1,22 +1,69 @@
//! Line buffer with current cursor position
-use std::iter;
-use std::ops::{Deref, Range};
-use unicode_segmentation::UnicodeSegmentation;
use keymap::{At, CharSearch, Movement, RepeatCount, Word};
+use std::cell::RefCell;
+use std::fmt;
+use std::iter;
+use std::ops::{Deref, Index, Range};
+use std::rc::Rc;
+use std::string::Drain;
+use std::sync::{Arc, Mutex};
+use unicode_segmentation::UnicodeSegmentation;
/// Maximum buffer size for the line read
pub static MAX_LINE: usize = 4096;
+/// Word's case change
+#[derive(Clone, Copy)]
pub enum WordAction {
CAPITALIZE,
LOWERCASE,
UPPERCASE,
}
-#[derive(Debug)]
+/// Delete (kill) direction
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum Direction {
+ Forward,
+ Backward,
+}
+
+impl Default for Direction {
+ fn default() -> Direction {
+ Direction::Forward
+ }
+}
+
+/// Listener to be notified when some text is deleted.
+pub trait DeleteListener {
+ fn start_killing(&mut self);
+ fn delete(&mut self, idx: usize, string: &str, dir: Direction);
+ fn stop_killing(&mut self);
+}
+
+/// Listener to be notified when the line is modified.
+pub trait ChangeListener: DeleteListener {
+ fn insert_char(&mut self, idx: usize, c: char);
+ fn insert_str(&mut self, idx: usize, string: &str);
+ fn replace(&mut self, idx: usize, old: &str, new: &str);
+}
+
+/// Represent the current input (text and cursor position).
+///
+/// The methods do text manipulations or/and cursor movements.
pub struct LineBuffer {
- buf: String, // Edited line buffer
- pos: usize, // Current cursor position (byte position)
+ buf: String, // Edited line buffer (rl_line_buffer)
+ pos: usize, // Current cursor position (byte position) (rl_point)
+ dl: Option<Arc<Mutex<DeleteListener>>>,
+ cl: Option<Rc<RefCell<ChangeListener>>>,
+}
+
+impl fmt::Debug for LineBuffer {
+ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+ f.debug_struct("LineBuffer")
+ .field("buf", &self.buf)
+ .field("pos", &self.pos)
+ .finish()
+ }
}
impl LineBuffer {
@@ -25,17 +72,33 @@
LineBuffer {
buf: String::with_capacity(capacity),
pos: 0,
+ dl: None,
+ cl: None,
}
}
#[cfg(test)]
- pub fn init(line: &str, pos: usize) -> LineBuffer {
+ pub fn init(line: &str, pos: usize, cl: Option<Rc<RefCell<ChangeListener>>>) -> LineBuffer {
let mut lb = Self::with_capacity(MAX_LINE);
assert!(lb.insert_str(0, line));
lb.set_pos(pos);
+ lb.cl = cl;
lb
}
+ pub fn set_delete_listener(&mut self, dl: Arc<Mutex<DeleteListener>>) {
+ self.dl = Some(dl);
+ }
+ pub fn remove_delete_listener(&mut self) {
+ self.dl = None;
+ }
+ pub fn set_change_listener(&mut self, dl: Rc<RefCell<ChangeListener>>) {
+ self.cl = Some(dl);
+ }
+ pub fn remove_change_listener(&mut self) {
+ self.cl = None;
+ }
+
/// Extracts a string slice containing the entire buffer.
pub fn as_str(&self) -> &str {
&self.buf
@@ -50,6 +113,7 @@
pub fn pos(&self) -> usize {
self.pos
}
+ /// Set cursor position (byte position)
pub fn set_pos(&mut self, pos: usize) {
assert!(pos <= self.buf.len());
self.pos = pos;
@@ -67,28 +131,22 @@
/// Set line content (`buf`) and cursor position (`pos`).
pub fn update(&mut self, buf: &str, pos: usize) {
assert!(pos <= buf.len());
- self.buf.clear();
+ let end = self.len();
+ self.drain(0..end, Direction::default());
let max = self.buf.capacity();
if buf.len() > max {
- self.buf.push_str(&buf[..max]);
+ self.insert_str(0, &buf[..max]);
if pos > max {
self.pos = max;
} else {
self.pos = pos;
}
} else {
- self.buf.push_str(buf);
+ self.insert_str(0, buf);
self.pos = pos;
}
}
- /// Backup `src`
- pub fn backup(&mut self, src: &LineBuffer) {
- self.buf.clear();
- self.buf.push_str(&src.buf);
- self.pos = src.pos;
- }
-
/// Returns the character at current cursor position.
fn grapheme_at_cursor(&self) -> Option<&str> {
if self.pos == self.buf.len() {
@@ -98,7 +156,9 @@
}
}
- fn next_pos(&self, n: RepeatCount) -> Option<usize> {
+ /// Returns the position of the character just after the current cursor
+ /// position.
+ pub fn next_pos(&self, n: RepeatCount) -> Option<usize> {
if self.pos == self.buf.len() {
return None;
}
@@ -108,7 +168,8 @@
.last()
.map(|(i, s)| i + self.pos + s.len())
}
- /// Returns the position of the character just before the current cursor position.
+ /// Returns the position of the character just before the current cursor
+ /// position.
fn prev_pos(&self, n: RepeatCount) -> Option<usize> {
if self.pos == 0 {
return None;
@@ -131,13 +192,11 @@
return None;
}
let push = self.pos == self.buf.len();
- if push {
- self.buf.reserve(shift);
- for _ in 0..n {
- self.buf.push(ch);
- }
- } else if n == 1 {
+ if n == 1 {
self.buf.insert(self.pos, ch);
+ for cl in &self.cl {
+ cl.borrow_mut().insert_char(self.pos, ch);
+ }
} else {
let text = iter::repeat(ch).take(n).collect::<String>();
let pos = self.pos;
@@ -156,14 +215,11 @@
return None;
}
let push = self.pos == self.buf.len();
- if push {
- self.buf.reserve(shift);
- for _ in 0..n {
- self.buf.push_str(text);
- }
+ let pos = self.pos;
+ if n == 1 {
+ self.insert_str(pos, text);
} else {
let text = iter::repeat(text).take(n).collect::<String>();
- let pos = self.pos;
self.insert_str(pos, &text);
}
self.pos += shift;
@@ -172,7 +228,9 @@
/// Delete previously yanked text and yank/paste `text` at current position.
pub fn yank_pop(&mut self, yank_size: usize, text: &str) -> Option<bool> {
- self.buf.drain((self.pos - yank_size)..self.pos);
+ let end = self.pos;
+ let start = end - yank_size;
+ self.drain(start..end, Direction::default());
self.pos -= yank_size;
self.yank(text, 1)
}
@@ -219,13 +277,17 @@
}
}
- /// Delete the character at the right of the cursor without altering the cursor
- /// position. Basically this is what happens with the "Delete" keyboard key.
+ /// Delete the character at the right of the cursor without altering the
+ /// cursor position. Basically this is what happens with the "Delete"
+ /// keyboard key.
/// Return the number of characters deleted.
pub fn delete(&mut self, n: RepeatCount) -> Option<String> {
match self.next_pos(n) {
Some(pos) => {
- let chars = self.buf.drain(self.pos..pos).collect::<String>();
+ let start = self.pos;
+ let chars = self
+ .drain(start..pos, Direction::Forward)
+ .collect::<String>();
Some(chars)
}
None => None,
@@ -234,35 +296,39 @@
/// Delete the character at the left of the cursor.
/// Basically that is what happens with the "Backspace" keyboard key.
- pub fn backspace(&mut self, n: RepeatCount) -> Option<String> {
+ pub fn backspace(&mut self, n: RepeatCount) -> bool {
match self.prev_pos(n) {
Some(pos) => {
- let chars = self.buf.drain(pos..self.pos).collect::<String>();
+ let end = self.pos;
+ self.drain(pos..end, Direction::Backward);
self.pos = pos;
- Some(chars)
+ true
}
- None => None,
+ None => false,
}
}
/// Kill the text from point to the end of the line.
- pub fn kill_line(&mut self) -> Option<String> {
+ pub fn kill_line(&mut self) -> bool {
if !self.buf.is_empty() && self.pos < self.buf.len() {
- let text = self.buf.drain(self.pos..).collect();
- Some(text)
+ let start = self.pos;
+ let end = self.buf.len();
+ self.drain(start..end, Direction::Forward);
+ true
} else {
- None
+ false
}
}
/// Kill backward from point to the beginning of the line.
- pub fn discard_line(&mut self) -> Option<String> {
+ pub fn discard_line(&mut self) -> bool {
if self.pos > 0 && !self.buf.is_empty() {
- let text = self.buf.drain(..self.pos).collect();
+ let end = self.pos;
+ self.drain(0..end, Direction::Backward);
self.pos = 0;
- Some(text)
+ true
} else {
- None
+ false
}
}
@@ -289,6 +355,7 @@
let mut sow = 0;
let mut gis = self.buf[..pos].grapheme_indices(true).rev();
'outer: for _ in 0..n {
+ sow = 0;
let mut gj = gis.next();
'inner: loop {
match gj {
@@ -328,13 +395,14 @@
/// Delete the previous word, maintaining the cursor at the start of the
/// current word.
- pub fn delete_prev_word(&mut self, word_def: Word, n: RepeatCount) -> Option<String> {
+ pub fn delete_prev_word(&mut self, word_def: Word, n: RepeatCount) -> bool {
if let Some(pos) = self.prev_word_pos(self.pos, word_def, n) {
- let word = self.buf.drain(pos..self.pos).collect();
+ let end = self.pos;
+ self.drain(pos..end, Direction::Backward);
self.pos = pos;
- Some(word)
+ true
} else {
- None
+ false
}
}
@@ -344,13 +412,14 @@
}
let mut wp = 0;
let mut gis = self.buf[pos..].grapheme_indices(true);
- let mut gi = if at != At::Start {
+ let mut gi = if at == At::BeforeEnd {
// TODO Validate
gis.next()
} else {
None
};
'outer: for _ in 0..n {
+ wp = 0;
gi = gis.next();
'inner: loop {
match gi {
@@ -409,18 +478,14 @@
fn search_char_pos(&self, cs: &CharSearch, n: RepeatCount) -> Option<usize> {
let mut shift = 0;
let search_result = match *cs {
- CharSearch::Backward(c) |
- CharSearch::BackwardAfter(c) => {
- self.buf[..self.pos]
- .char_indices()
- .rev()
- .filter(|&(_, ch)| ch == c)
- .take(n)
- .last()
- .map(|(i, _)| i)
- }
- CharSearch::Forward(c) |
- CharSearch::ForwardBefore(c) => {
+ CharSearch::Backward(c) | CharSearch::BackwardAfter(c) => self.buf[..self.pos]
+ .char_indices()
+ .rev()
+ .filter(|&(_, ch)| ch == c)
+ .take(n)
+ .last()
+ .map(|(i, _)| i),
+ CharSearch::Forward(c) | CharSearch::ForwardBefore(c) => {
if let Some(cc) = self.grapheme_at_cursor() {
shift = self.pos + cc.len();
if shift < self.buf.len() {
@@ -440,23 +505,25 @@
};
if let Some(pos) = search_result {
Some(match *cs {
- CharSearch::Backward(_) => pos,
- CharSearch::BackwardAfter(c) => pos + c.len_utf8(),
- CharSearch::Forward(_) => shift + pos,
- CharSearch::ForwardBefore(_) => {
- shift + pos -
- self.buf[..shift + pos]
- .chars()
- .next_back()
- .unwrap()
- .len_utf8()
- }
- })
+ CharSearch::Backward(_) => pos,
+ CharSearch::BackwardAfter(c) => pos + c.len_utf8(),
+ CharSearch::Forward(_) => shift + pos,
+ CharSearch::ForwardBefore(_) => {
+ shift + pos
+ - self.buf[..shift + pos]
+ .chars()
+ .next_back()
+ .unwrap()
+ .len_utf8()
+ }
+ })
} else {
None
}
}
+ /// Move cursor to the matching character position.
+ /// Return `true` when the search succeeds.
pub fn move_to(&mut self, cs: CharSearch, n: RepeatCount) -> bool {
if let Some(pos) = self.search_char_pos(&cs, n) {
self.pos = pos;
@@ -468,34 +535,40 @@
/// Kill from the cursor to the end of the current word,
/// or, if between words, to the end of the next word.
- pub fn delete_word(&mut self, at: At, word_def: Word, n: RepeatCount) -> Option<String> {
+ pub fn delete_word(&mut self, at: At, word_def: Word, n: RepeatCount) -> bool {
if let Some(pos) = self.next_word_pos(self.pos, at, word_def, n) {
- let word = self.buf.drain(self.pos..pos).collect();
- Some(word)
+ let start = self.pos;
+ self.drain(start..pos, Direction::Forward);
+ true
} else {
- None
+ false
}
}
- pub fn delete_to(&mut self, cs: CharSearch, n: RepeatCount) -> Option<String> {
+ pub fn delete_to(&mut self, cs: CharSearch, n: RepeatCount) -> bool {
let search_result = match cs {
CharSearch::ForwardBefore(c) => self.search_char_pos(&CharSearch::Forward(c), n),
_ => self.search_char_pos(&cs, n),
};
if let Some(pos) = search_result {
- let chunk = match cs {
- CharSearch::Backward(_) |
- CharSearch::BackwardAfter(_) => {
+ match cs {
+ CharSearch::Backward(_) | CharSearch::BackwardAfter(_) => {
let end = self.pos;
self.pos = pos;
- self.buf.drain(pos..end).collect()
+ self.drain(pos..end, Direction::Backward);
}
- CharSearch::ForwardBefore(_) => self.buf.drain(self.pos..pos).collect(),
- CharSearch::Forward(c) => self.buf.drain(self.pos..pos + c.len_utf8()).collect(),
+ CharSearch::ForwardBefore(_) => {
+ let start = self.pos;
+ self.drain(start..pos, Direction::Forward);
+ }
+ CharSearch::Forward(c) => {
+ let start = self.pos;
+ self.drain(start..pos + c.len_utf8(), Direction::Forward);
+ }
};
- Some(chunk)
+ true
} else {
- None
+ false
}
}
@@ -517,7 +590,9 @@
if start == end {
return false;
}
- let word = self.buf.drain(start..end).collect::<String>();
+ let word = self
+ .drain(start..end, Direction::default())
+ .collect::<String>();
let result = match a {
WordAction::CAPITALIZE => {
let ch = (&word).graphemes(true).next().unwrap();
@@ -550,12 +625,14 @@
return false;
}
- let w1 = self.buf[w1_beg..w1_end].to_string();
+ let w1 = self.buf[w1_beg..w1_end].to_owned();
- let w2 = self.buf.drain(w2_beg..w2_end).collect::<String>();
+ let w2 = self
+ .drain(w2_beg..w2_end, Direction::default())
+ .collect::<String>();
self.insert_str(w2_beg, &w1);
- self.buf.drain(w1_beg..w1_end);
+ self.drain(w1_beg..w1_end, Direction::default());
self.insert_str(w1_beg, &w2);
self.pos = w2_end;
@@ -566,60 +643,89 @@
/// and positions the cursor to the end of text.
pub fn replace(&mut self, range: Range<usize>, text: &str) {
let start = range.start;
+ for cl in &self.cl {
+ cl.borrow_mut()
+ .replace(start, self.buf.index(range.clone()), text);
+ }
self.buf.drain(range);
- self.insert_str(start, text);
+ if start == self.buf.len() {
+ self.buf.push_str(text);
+ } else {
+ self.buf.insert_str(start, text);
+ }
self.pos = start + text.len();
}
- fn insert_str(&mut self, idx: usize, s: &str) -> bool {
+ /// Insert the `s`tring at the specified position.
+ /// Return `true` if the text has been inserted at the end of the line.
+ pub fn insert_str(&mut self, idx: usize, s: &str) -> bool {
+ for cl in &self.cl {
+ cl.borrow_mut().insert_str(idx, s);
+ }
if idx == self.buf.len() {
self.buf.push_str(s);
true
} else {
- insert_str(&mut self.buf, idx, s);
+ self.buf.insert_str(idx, s);
false
}
}
- pub fn copy(&self, mvt: Movement) -> Option<String> {
+ /// Remove the specified `range` in the line.
+ pub fn delete_range(&mut self, range: Range<usize>) {
+ self.set_pos(range.start);
+ self.drain(range, Direction::default());
+ }
+
+ fn drain(&mut self, range: Range<usize>, dir: Direction) -> Drain {
+ for dl in &self.dl {
+ let mut lock = dl.try_lock();
+ if let Ok(mut dl) = lock {
+ dl.delete(range.start, &self.buf[range.start..range.end], dir);
+ }
+ }
+ for cl in &self.cl {
+ cl.borrow_mut()
+ .delete(range.start, &self.buf[range.start..range.end], dir);
+ }
+ self.buf.drain(range)
+ }
+
+ /// Return the content between current cursor position and `mvt` position.
+ /// Return `None` when the buffer is empty or when the movement fails.
+ pub fn copy(&self, mvt: &Movement) -> Option<String> {
if self.is_empty() {
return None;
}
- match mvt {
+ match *mvt {
Movement::WholeLine => Some(self.buf.clone()),
- Movement::BeginningOfLine => {
- if self.pos == 0 {
- None
- } else {
- Some(self.buf[..self.pos].to_string())
- }
- }
- Movement::ViFirstPrint => {
- if self.pos == 0 {
- None
- } else if let Some(pos) = self.next_word_pos(0, At::Start, Word::Big, 1) {
- Some(self.buf[pos..self.pos].to_owned())
- } else {
- None
- }
- }
- Movement::EndOfLine => {
- if self.pos == self.buf.len() {
- None
- } else {
- Some(self.buf[self.pos..].to_string())
- }
- }
+ Movement::BeginningOfLine => if self.pos == 0 {
+ None
+ } else {
+ Some(self.buf[..self.pos].to_owned())
+ },
+ Movement::ViFirstPrint => if self.pos == 0 {
+ None
+ } else if let Some(pos) = self.next_word_pos(0, At::Start, Word::Big, 1) {
+ Some(self.buf[pos..self.pos].to_owned())
+ } else {
+ None
+ },
+ Movement::EndOfLine => if self.pos == self.buf.len() {
+ None
+ } else {
+ Some(self.buf[self.pos..].to_owned())
+ },
Movement::BackwardWord(n, word_def) => {
if let Some(pos) = self.prev_word_pos(self.pos, word_def, n) {
- Some(self.buf[pos..self.pos].to_string())
+ Some(self.buf[pos..self.pos].to_owned())
} else {
None
}
}
Movement::ForwardWord(n, at, word_def) => {
if let Some(pos) = self.next_word_pos(self.pos, at, word_def, n) {
- Some(self.buf[self.pos..pos].to_string())
+ Some(self.buf[self.pos..pos].to_owned())
} else {
None
}
@@ -633,32 +739,82 @@
};
if let Some(pos) = search_result {
Some(match cs {
- CharSearch::Backward(_) |
- CharSearch::BackwardAfter(_) => self.buf[pos..self.pos].to_string(),
- CharSearch::ForwardBefore(_) => self.buf[self.pos..pos].to_string(),
- CharSearch::Forward(c) => {
- self.buf[self.pos..pos + c.len_utf8()].to_string()
- }
- })
+ CharSearch::Backward(_) | CharSearch::BackwardAfter(_) => {
+ self.buf[pos..self.pos].to_owned()
+ }
+ CharSearch::ForwardBefore(_) => self.buf[self.pos..pos].to_owned(),
+ CharSearch::Forward(c) => self.buf[self.pos..pos + c.len_utf8()].to_owned(),
+ })
} else {
None
}
}
- Movement::BackwardChar(n) => {
- if let Some(pos) = self.prev_pos(n) {
- Some(self.buf[pos..self.pos].to_string())
- } else {
- None
- }
- }
- Movement::ForwardChar(n) => {
- if let Some(pos) = self.next_pos(n) {
- Some(self.buf[self.pos..pos].to_string())
- } else {
- None
- }
+ Movement::BackwardChar(n) => if let Some(pos) = self.prev_pos(n) {
+ Some(self.buf[pos..self.pos].to_owned())
+ } else {
+ None
+ },
+ Movement::ForwardChar(n) => if let Some(pos) = self.next_pos(n) {
+ Some(self.buf[self.pos..pos].to_owned())
+ } else {
+ None
+ },
+ }
+ }
+
+ pub fn kill(&mut self, mvt: &Movement) -> bool {
+ let notify = match *mvt {
+ Movement::ForwardChar(_) => false,
+ Movement::BackwardChar(_) => false,
+ _ => true,
+ };
+ if notify {
+ if let Some(dl) = self.dl.as_ref() {
+ let mut dl = dl.lock().unwrap();
+ dl.start_killing()
}
}
+ let killed = match *mvt {
+ Movement::ForwardChar(n) => {
+ // Delete (forward) `n` characters at point.
+ self.delete(n).is_some()
+ }
+ Movement::BackwardChar(n) => {
+ // Delete `n` characters backward.
+ self.backspace(n)
+ }
+ Movement::EndOfLine => {
+ // Kill the text from point to the end of the line.
+ self.kill_line()
+ }
+ Movement::WholeLine => {
+ self.move_home();
+ self.kill_line()
+ }
+ Movement::BeginningOfLine => {
+ // Kill backward from point to the beginning of the line.
+ self.discard_line()
+ }
+ Movement::BackwardWord(n, word_def) => {
+ // kill `n` words backward (until start of word)
+ self.delete_prev_word(word_def, n)
+ }
+ Movement::ForwardWord(n, at, word_def) => {
+ // kill `n` words forward (until start/end of word)
+ self.delete_word(at, word_def, n)
+ }
+ Movement::ViCharSearch(n, cs) => self.delete_to(cs, n),
+ Movement::ViFirstPrint => {
+ false // TODO
+ }
+ };
+ if notify {
+ if let Some(dl) = self.dl.as_ref() {
+ let mut dl = dl.lock().unwrap();
+ dl.stop_killing()
+ }
+ }
+ killed
}
}
@@ -670,73 +826,85 @@
}
}
-fn insert_str(buf: &mut String, idx: usize, s: &str) {
- use std::ptr;
-
- let len = buf.len();
- assert!(idx <= len);
- assert!(buf.is_char_boundary(idx));
- let amt = s.len();
- buf.reserve(amt);
-
- unsafe {
- let v = buf.as_mut_vec();
- ptr::copy(v.as_ptr().offset(idx as isize),
- v.as_mut_ptr().offset((idx + amt) as isize),
- len - idx);
- ptr::copy_nonoverlapping(s.as_ptr(), v.as_mut_ptr().offset(idx as isize), amt);
- v.set_len(len + amt);
- }
-}
-
fn is_start_of_word(word_def: Word, previous: &str, grapheme: &str) -> bool {
- (!is_word_char(word_def, previous) && is_word_char(word_def, grapheme)) ||
- (word_def == Word::Vi && !is_other_char(previous) && is_other_char(grapheme))
+ (!is_word_char(word_def, previous) && is_word_char(word_def, grapheme))
+ || (word_def == Word::Vi && !is_other_char(previous) && is_other_char(grapheme))
}
fn is_end_of_word(word_def: Word, grapheme: &str, next: &str) -> bool {
- (!is_word_char(word_def, next) && is_word_char(word_def, grapheme)) ||
- (word_def == Word::Vi && !is_other_char(next) && is_other_char(grapheme))
+ (!is_word_char(word_def, next) && is_word_char(word_def, grapheme))
+ || (word_def == Word::Vi && !is_other_char(next) && is_other_char(grapheme))
}
fn is_word_char(word_def: Word, grapheme: &str) -> bool {
match word_def {
Word::Emacs => grapheme.chars().all(|c| c.is_alphanumeric()),
Word::Vi => is_vi_word_char(grapheme),
- Word::Big => !grapheme.chars().all(|c| c.is_whitespace()),
+ Word::Big => !grapheme.chars().any(|c| c.is_whitespace()),
}
}
fn is_vi_word_char(grapheme: &str) -> bool {
grapheme.chars().all(|c| c.is_alphanumeric()) || grapheme == "_"
}
fn is_other_char(grapheme: &str) -> bool {
- !(grapheme.chars().all(|c| c.is_whitespace()) || is_vi_word_char(grapheme))
+ !(grapheme.chars().any(|c| c.is_whitespace()) || is_vi_word_char(grapheme))
}
#[cfg(test)]
mod test {
+ use super::{ChangeListener, DeleteListener, Direction, LineBuffer, WordAction, MAX_LINE};
use keymap::{At, CharSearch, Word};
- use super::{LineBuffer, MAX_LINE, WordAction};
+ use std::cell::RefCell;
+ use std::rc::Rc;
+
+ struct Listener {
+ deleted_str: Option<String>,
+ }
+
+ impl Listener {
+ fn new() -> Rc<RefCell<Listener>> {
+ let l = Listener { deleted_str: None };
+ Rc::new(RefCell::new(l))
+ }
+
+ fn assert_deleted_str_eq(&self, expected: &str) {
+ let actual = self.deleted_str.as_ref().expect("no deleted string");
+ assert_eq!(expected, actual)
+ }
+ }
+
+ impl DeleteListener for Listener {
+ fn start_killing(&mut self) {}
+ fn delete(&mut self, _: usize, string: &str, _: Direction) {
+ self.deleted_str = Some(string.to_owned());
+ }
+ fn stop_killing(&mut self) {}
+ }
+ impl ChangeListener for Listener {
+ fn insert_char(&mut self, _: usize, _: char) {}
+ fn insert_str(&mut self, _: usize, _: &str) {}
+ fn replace(&mut self, _: usize, _: &str, _: &str) {}
+ }
#[test]
fn next_pos() {
- let s = LineBuffer::init("ö̲g̈", 0);
+ let s = LineBuffer::init("ö̲g̈", 0, None);
assert_eq!(7, s.len());
let pos = s.next_pos(1);
assert_eq!(Some(4), pos);
- let s = LineBuffer::init("ö̲g̈", 4);
+ let s = LineBuffer::init("ö̲g̈", 4, None);
let pos = s.next_pos(1);
assert_eq!(Some(7), pos);
}
#[test]
fn prev_pos() {
- let s = LineBuffer::init("ö̲g̈", 4);
+ let s = LineBuffer::init("ö̲g̈", 4, None);
assert_eq!(7, s.len());
let pos = s.prev_pos(1);
assert_eq!(Some(0), pos);
- let s = LineBuffer::init("ö̲g̈", 7);
+ let s = LineBuffer::init("ö̲g̈", 7, None);
let pos = s.prev_pos(1);
assert_eq!(Some(4), pos);
}
@@ -763,7 +931,7 @@
#[test]
fn yank_after() {
- let mut s = LineBuffer::init("αß", 2);
+ let mut s = LineBuffer::init("αß", 2, None);
s.move_forward(1);
let ok = s.yank("γδε", 1);
assert_eq!(Some(true), ok);
@@ -773,7 +941,7 @@
#[test]
fn yank_before() {
- let mut s = LineBuffer::init("αε", 2);
+ let mut s = LineBuffer::init("αε", 2, None);
let ok = s.yank("ßγδ", 1);
assert_eq!(Some(false), ok);
assert_eq!("αßγδε", s.buf);
@@ -782,7 +950,7 @@
#[test]
fn moves() {
- let mut s = LineBuffer::init("αß", 4);
+ let mut s = LineBuffer::init("αß", 4, None);
let ok = s.move_backward(1);
assert_eq!("αß", s.buf);
assert_eq!(2, s.pos);
@@ -806,7 +974,7 @@
#[test]
fn move_grapheme() {
- let mut s = LineBuffer::init("ag̈", 4);
+ let mut s = LineBuffer::init("ag̈", 4, None);
assert_eq!(4, s.len());
let ok = s.move_backward(1);
assert_eq!(true, ok);
@@ -819,36 +987,41 @@
#[test]
fn delete() {
- let mut s = LineBuffer::init("αß", 2);
+ let cl = Listener::new();
+ let mut s = LineBuffer::init("αß", 2, Some(cl.clone()));
let chars = s.delete(1);
assert_eq!("α", s.buf);
assert_eq!(2, s.pos);
- assert_eq!(Some("ß".to_string()), chars);
+ assert_eq!(Some("ß".to_owned()), chars);
- let chars = s.backspace(1);
+ let ok = s.backspace(1);
assert_eq!("", s.buf);
assert_eq!(0, s.pos);
- assert_eq!(Some("α".to_string()), chars);
+ assert_eq!(true, ok);
+ cl.borrow().assert_deleted_str_eq("α");
}
#[test]
fn kill() {
- let mut s = LineBuffer::init("αßγδε", 6);
- let text = s.kill_line();
+ let cl = Listener::new();
+ let mut s = LineBuffer::init("αßγδε", 6, Some(cl.clone()));
+ let ok = s.kill_line();
assert_eq!("αßγ", s.buf);
assert_eq!(6, s.pos);
- assert_eq!(Some("δε".to_string()), text);
+ assert_eq!(true, ok);
+ cl.borrow().assert_deleted_str_eq("δε");
s.pos = 4;
- let text = s.discard_line();
+ let ok = s.discard_line();
assert_eq!("γ", s.buf);
assert_eq!(0, s.pos);
- assert_eq!(Some("αß".to_string()), text);
+ assert_eq!(true, ok);
+ cl.borrow().assert_deleted_str_eq("αß");
}
#[test]
fn transpose() {
- let mut s = LineBuffer::init("aßc", 1);
+ let mut s = LineBuffer::init("aßc", 1, None);
let ok = s.transpose_chars();
assert_eq!("ßac", s.buf);
assert_eq!(3, s.pos);
@@ -871,16 +1044,26 @@
#[test]
fn move_to_prev_word() {
- let mut s = LineBuffer::init("a ß c", 6);
+ let mut s = LineBuffer::init("a ß c", 6, None); // before 'c'
let ok = s.move_to_prev_word(Word::Emacs, 1);
assert_eq!("a ß c", s.buf);
- assert_eq!(2, s.pos);
- assert_eq!(true, ok);
+ assert_eq!(2, s.pos); // before 'ß'
+ assert!(true, ok);
+
+ assert!(s.move_end()); // after 'c'
+ assert_eq!(7, s.pos);
+ let ok = s.move_to_prev_word(Word::Emacs, 1);
+ assert!(true, ok);
+ assert_eq!(6, s.pos); // before 'c'
+
+ let ok = s.move_to_prev_word(Word::Emacs, 2);
+ assert!(true, ok);
+ assert_eq!(0, s.pos);
}
#[test]
fn move_to_prev_vi_word() {
- let mut s = LineBuffer::init("alpha ,beta/rho; mu", 19);
+ let mut s = LineBuffer::init("alpha ,beta/rho; mu", 19, None);
let ok = s.move_to_prev_word(Word::Vi, 1);
assert!(ok);
assert_eq!(17, s.pos);
@@ -908,7 +1091,7 @@
#[test]
fn move_to_prev_big_word() {
- let mut s = LineBuffer::init("alpha ,beta/rho; mu", 19);
+ let mut s = LineBuffer::init("alpha ,beta/rho; mu", 19, None);
let ok = s.move_to_prev_word(Word::Big, 1);
assert!(ok);
assert_eq!(17, s.pos);
@@ -924,17 +1107,17 @@
#[test]
fn move_to_forward() {
- let mut s = LineBuffer::init("αßγδε", 2);
+ let mut s = LineBuffer::init("αßγδε", 2, None);
let ok = s.move_to(CharSearch::ForwardBefore('ε'), 1);
assert_eq!(true, ok);
assert_eq!(6, s.pos);
- let mut s = LineBuffer::init("αßγδε", 2);
+ let mut s = LineBuffer::init("αßγδε", 2, None);
let ok = s.move_to(CharSearch::Forward('ε'), 1);
assert_eq!(true, ok);
assert_eq!(8, s.pos);
- let mut s = LineBuffer::init("αßγδε", 2);
+ let mut s = LineBuffer::init("αßγδε", 2, None);
let ok = s.move_to(CharSearch::Forward('ε'), 10);
assert_eq!(true, ok);
assert_eq!(8, s.pos);
@@ -942,12 +1125,12 @@
#[test]
fn move_to_backward() {
- let mut s = LineBuffer::init("αßγδε", 8);
+ let mut s = LineBuffer::init("αßγδε", 8, None);
let ok = s.move_to(CharSearch::BackwardAfter('ß'), 1);
assert_eq!(true, ok);
assert_eq!(4, s.pos);
- let mut s = LineBuffer::init("αßγδε", 8);
+ let mut s = LineBuffer::init("αßγδε", 8, None);
let ok = s.move_to(CharSearch::Backward('ß'), 1);
assert_eq!(true, ok);
assert_eq!(2, s.pos);
@@ -955,25 +1138,40 @@
#[test]
fn delete_prev_word() {
- let mut s = LineBuffer::init("a ß c", 6);
- let text = s.delete_prev_word(Word::Big, 1);
+ let cl = Listener::new();
+ let mut s = LineBuffer::init("a ß c", 6, Some(cl.clone()));
+ let ok = s.delete_prev_word(Word::Big, 1);
assert_eq!("a c", s.buf);
assert_eq!(2, s.pos);
- assert_eq!(Some("ß ".to_string()), text);
+ assert_eq!(true, ok);
+ cl.borrow().assert_deleted_str_eq("ß ");
}
#[test]
fn move_to_next_word() {
- let mut s = LineBuffer::init("a ß c", 1);
+ let mut s = LineBuffer::init("a ß c", 1, None); // after 'a'
let ok = s.move_to_next_word(At::AfterEnd, Word::Emacs, 1);
assert_eq!("a ß c", s.buf);
- assert_eq!(4, s.pos);
assert_eq!(true, ok);
+ assert_eq!(4, s.pos); // after 'ß'
+
+ let ok = s.move_to_next_word(At::AfterEnd, Word::Emacs, 1);
+ assert_eq!(true, ok);
+ assert_eq!(7, s.pos); // after 'c'
+
+ s.move_home();
+ let ok = s.move_to_next_word(At::AfterEnd, Word::Emacs, 1);
+ assert_eq!(true, ok);
+ assert_eq!(1, s.pos); // after 'a'
+
+ let ok = s.move_to_next_word(At::AfterEnd, Word::Emacs, 2);
+ assert_eq!(true, ok);
+ assert_eq!(7, s.pos); // after 'c'
}
#[test]
fn move_to_end_of_word() {
- let mut s = LineBuffer::init("a ßeta c", 1);
+ let mut s = LineBuffer::init("a ßeta c", 1, None);
let ok = s.move_to_next_word(At::BeforeEnd, Word::Vi, 1);
assert_eq!("a ßeta c", s.buf);
assert_eq!(6, s.pos);
@@ -982,7 +1180,7 @@
#[test]
fn move_to_end_of_vi_word() {
- let mut s = LineBuffer::init("alpha ,beta/rho; mu", 0);
+ let mut s = LineBuffer::init("alpha ,beta/rho; mu", 0, None);
let ok = s.move_to_next_word(At::BeforeEnd, Word::Vi, 1);
assert!(ok);
assert_eq!(4, s.pos);
@@ -1010,7 +1208,7 @@
#[test]
fn move_to_end_of_big_word() {
- let mut s = LineBuffer::init("alpha ,beta/rho; mu", 0);
+ let mut s = LineBuffer::init("alpha ,beta/rho; mu", 0, None);
let ok = s.move_to_next_word(At::BeforeEnd, Word::Big, 1);
assert!(ok);
assert_eq!(4, s.pos);
@@ -1026,7 +1224,7 @@
#[test]
fn move_to_start_of_word() {
- let mut s = LineBuffer::init("a ß c", 2);
+ let mut s = LineBuffer::init("a ß c", 2, None);
let ok = s.move_to_next_word(At::Start, Word::Emacs, 1);
assert_eq!("a ß c", s.buf);
assert_eq!(6, s.pos);
@@ -1035,7 +1233,7 @@
#[test]
fn move_to_start_of_vi_word() {
- let mut s = LineBuffer::init("alpha ,beta/rho; mu", 0);
+ let mut s = LineBuffer::init("alpha ,beta/rho; mu", 0, None);
let ok = s.move_to_next_word(At::Start, Word::Vi, 1);
assert!(ok);
assert_eq!(6, s.pos);
@@ -1063,7 +1261,7 @@
#[test]
fn move_to_start_of_big_word() {
- let mut s = LineBuffer::init("alpha ,beta/rho; mu", 0);
+ let mut s = LineBuffer::init("alpha ,beta/rho; mu", 0, None);
let ok = s.move_to_next_word(At::Start, Word::Big, 1);
assert!(ok);
assert_eq!(6, s.pos);
@@ -1079,76 +1277,87 @@
#[test]
fn delete_word() {
- let mut s = LineBuffer::init("a ß c", 1);
- let text = s.delete_word(At::AfterEnd, Word::Emacs, 1);
+ let cl = Listener::new();
+ let mut s = LineBuffer::init("a ß c", 1, Some(cl.clone()));
+ let ok = s.delete_word(At::AfterEnd, Word::Emacs, 1);
assert_eq!("a c", s.buf);
assert_eq!(1, s.pos);
- assert_eq!(Some(" ß".to_string()), text);
+ assert_eq!(true, ok);
+ cl.borrow().assert_deleted_str_eq(" ß");
- let mut s = LineBuffer::init("test", 0);
- let text = s.delete_word(At::AfterEnd, Word::Vi, 1);
+ let mut s = LineBuffer::init("test", 0, Some(cl.clone()));
+ let ok = s.delete_word(At::AfterEnd, Word::Vi, 1);
assert_eq!("", s.buf);
assert_eq!(0, s.pos);
- assert_eq!(Some("test".to_string()), text);
+ assert_eq!(true, ok);
+ cl.borrow().assert_deleted_str_eq("test");
}
#[test]
fn delete_til_start_of_word() {
- let mut s = LineBuffer::init("a ß c", 2);
- let text = s.delete_word(At::Start, Word::Emacs, 1);
+ let cl = Listener::new();
+ let mut s = LineBuffer::init("a ß c", 2, Some(cl.clone()));
+ let ok = s.delete_word(At::Start, Word::Emacs, 1);
assert_eq!("a c", s.buf);
assert_eq!(2, s.pos);
- assert_eq!(Some("ß ".to_string()), text);
+ assert_eq!(true, ok);
+ cl.borrow().assert_deleted_str_eq("ß ");
}
#[test]
fn delete_to_forward() {
- let mut s = LineBuffer::init("αßγδε", 2);
- let text = s.delete_to(CharSearch::ForwardBefore('ε'), 1);
- assert_eq!(Some("ßγδ".to_string()), text);
+ let cl = Listener::new();
+ let mut s = LineBuffer::init("αßγδε", 2, Some(cl.clone()));
+ let ok = s.delete_to(CharSearch::ForwardBefore('ε'), 1);
+ assert_eq!(true, ok);
+ cl.borrow().assert_deleted_str_eq("ßγδ");
assert_eq!("αε", s.buf);
assert_eq!(2, s.pos);
- let mut s = LineBuffer::init("αßγδε", 2);
- let text = s.delete_to(CharSearch::Forward('ε'), 1);
- assert_eq!(Some("ßγδε".to_string()), text);
+ let mut s = LineBuffer::init("αßγδε", 2, Some(cl.clone()));
+ let ok = s.delete_to(CharSearch::Forward('ε'), 1);
+ assert_eq!(true, ok);
+ cl.borrow().assert_deleted_str_eq("ßγδε");
assert_eq!("α", s.buf);
assert_eq!(2, s.pos);
}
#[test]
fn delete_to_backward() {
- let mut s = LineBuffer::init("αßγδε", 8);
- let text = s.delete_to(CharSearch::BackwardAfter('α'), 1);
- assert_eq!(Some("ßγδ".to_string()), text);
+ let cl = Listener::new();
+ let mut s = LineBuffer::init("αßγδε", 8, Some(cl.clone()));
+ let ok = s.delete_to(CharSearch::BackwardAfter('α'), 1);
+ assert_eq!(true, ok);
+ cl.borrow().assert_deleted_str_eq("ßγδ");
assert_eq!("αε", s.buf);
assert_eq!(2, s.pos);
- let mut s = LineBuffer::init("αßγδε", 8);
- let text = s.delete_to(CharSearch::Backward('ß'), 1);
- assert_eq!(Some("ßγδ".to_string()), text);
+ let mut s = LineBuffer::init("αßγδε", 8, Some(cl.clone()));
+ let ok = s.delete_to(CharSearch::Backward('ß'), 1);
+ assert_eq!(true, ok);
+ cl.borrow().assert_deleted_str_eq("ßγδ");
assert_eq!("αε", s.buf);
assert_eq!(2, s.pos);
}
#[test]
fn edit_word() {
- let mut s = LineBuffer::init("a ßeta c", 1);
+ let mut s = LineBuffer::init("a ßeta c", 1, None);
assert!(s.edit_word(WordAction::UPPERCASE));
assert_eq!("a SSETA c", s.buf);
assert_eq!(7, s.pos);
- let mut s = LineBuffer::init("a ßetA c", 1);
+ let mut s = LineBuffer::init("a ßetA c", 1, None);
assert!(s.edit_word(WordAction::LOWERCASE));
assert_eq!("a ßeta c", s.buf);
assert_eq!(7, s.pos);
- let mut s = LineBuffer::init("a ßETA c", 1);
+ let mut s = LineBuffer::init("a ßETA c", 1, None);
assert!(s.edit_word(WordAction::CAPITALIZE));
assert_eq!("a SSeta c", s.buf);
assert_eq!(7, s.pos);
- let mut s = LineBuffer::init("test", 1);
+ let mut s = LineBuffer::init("test", 1, None);
assert!(s.edit_word(WordAction::CAPITALIZE));
assert_eq!("tEst", s.buf);
assert_eq!(4, s.pos);
@@ -1156,20 +1365,20 @@
#[test]
fn transpose_words() {
- let mut s = LineBuffer::init("ßeta / δelta__", 15);
+ let mut s = LineBuffer::init("ßeta / δelta__", 15, None);
assert!(s.transpose_words(1));
assert_eq!("δelta__ / ßeta", s.buf);
assert_eq!(16, s.pos);
- let mut s = LineBuffer::init("ßeta / δelta", 14);
+ let mut s = LineBuffer::init("ßeta / δelta", 14, None);
assert!(s.transpose_words(1));
assert_eq!("δelta / ßeta", s.buf);
assert_eq!(14, s.pos);
- let mut s = LineBuffer::init(" / δelta", 8);
+ let mut s = LineBuffer::init(" / δelta", 8, None);
assert!(!s.transpose_words(1));
- let mut s = LineBuffer::init("ßeta / __", 9);
+ let mut s = LineBuffer::init("ßeta / __", 9, None);
assert!(!s.transpose_words(1));
}
}
diff --git a/src/test/common.rs b/src/test/common.rs
new file mode 100644
index 0000000..7fe8b17
--- /dev/null
+++ b/src/test/common.rs
@@ -0,0 +1,401 @@
+///! Basic commands tests.
+use super::{assert_cursor, assert_line, assert_line_with_initial, init_editor};
+use config::EditMode;
+use consts::KeyPress;
+use error::ReadlineError;
+
+#[test]
+fn home_key() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_cursor(
+ *mode,
+ ("", ""),
+ &[KeyPress::Home, KeyPress::Enter],
+ ("", ""),
+ );
+ assert_cursor(
+ *mode,
+ ("Hi", ""),
+ &[KeyPress::Home, KeyPress::Enter],
+ ("", "Hi"),
+ );
+ if *mode == EditMode::Vi {
+ // vi command mode
+ assert_cursor(
+ *mode,
+ ("Hi", ""),
+ &[KeyPress::Esc, KeyPress::Home, KeyPress::Enter],
+ ("", "Hi"),
+ );
+ }
+ }
+}
+
+#[test]
+fn end_key() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_cursor(*mode, ("", ""), &[KeyPress::End, KeyPress::Enter], ("", ""));
+ assert_cursor(
+ *mode,
+ ("H", "i"),
+ &[KeyPress::End, KeyPress::Enter],
+ ("Hi", ""),
+ );
+ assert_cursor(
+ *mode,
+ ("", "Hi"),
+ &[KeyPress::End, KeyPress::Enter],
+ ("Hi", ""),
+ );
+ if *mode == EditMode::Vi {
+ // vi command mode
+ assert_cursor(
+ *mode,
+ ("", "Hi"),
+ &[KeyPress::Esc, KeyPress::End, KeyPress::Enter],
+ ("Hi", ""),
+ );
+ }
+ }
+}
+
+#[test]
+fn left_key() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_cursor(
+ *mode,
+ ("Hi", ""),
+ &[KeyPress::Left, KeyPress::Enter],
+ ("H", "i"),
+ );
+ assert_cursor(
+ *mode,
+ ("H", "i"),
+ &[KeyPress::Left, KeyPress::Enter],
+ ("", "Hi"),
+ );
+ assert_cursor(
+ *mode,
+ ("", "Hi"),
+ &[KeyPress::Left, KeyPress::Enter],
+ ("", "Hi"),
+ );
+ if *mode == EditMode::Vi {
+ // vi command mode
+ assert_cursor(
+ *mode,
+ ("Bye", ""),
+ &[KeyPress::Esc, KeyPress::Left, KeyPress::Enter],
+ ("B", "ye"),
+ );
+ }
+ }
+}
+
+#[test]
+fn right_key() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_cursor(
+ *mode,
+ ("", ""),
+ &[KeyPress::Right, KeyPress::Enter],
+ ("", ""),
+ );
+ assert_cursor(
+ *mode,
+ ("", "Hi"),
+ &[KeyPress::Right, KeyPress::Enter],
+ ("H", "i"),
+ );
+ assert_cursor(
+ *mode,
+ ("B", "ye"),
+ &[KeyPress::Right, KeyPress::Enter],
+ ("By", "e"),
+ );
+ assert_cursor(
+ *mode,
+ ("H", "i"),
+ &[KeyPress::Right, KeyPress::Enter],
+ ("Hi", ""),
+ );
+ if *mode == EditMode::Vi {
+ // vi command mode
+ assert_cursor(
+ *mode,
+ ("", "Hi"),
+ &[KeyPress::Esc, KeyPress::Right, KeyPress::Enter],
+ ("H", "i"),
+ );
+ }
+ }
+}
+
+#[test]
+fn enter_key() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_line(*mode, &[KeyPress::Enter], "");
+ assert_line(*mode, &[KeyPress::Char('a'), KeyPress::Enter], "a");
+ assert_line_with_initial(*mode, ("Hi", ""), &[KeyPress::Enter], "Hi");
+ assert_line_with_initial(*mode, ("", "Hi"), &[KeyPress::Enter], "Hi");
+ assert_line_with_initial(*mode, ("H", "i"), &[KeyPress::Enter], "Hi");
+ if *mode == EditMode::Vi {
+ // vi command mode
+ assert_line(*mode, &[KeyPress::Esc, KeyPress::Enter], "");
+ assert_line(
+ *mode,
+ &[KeyPress::Char('a'), KeyPress::Esc, KeyPress::Enter],
+ "a",
+ );
+ assert_line_with_initial(*mode, ("Hi", ""), &[KeyPress::Esc, KeyPress::Enter], "Hi");
+ assert_line_with_initial(*mode, ("", "Hi"), &[KeyPress::Esc, KeyPress::Enter], "Hi");
+ assert_line_with_initial(*mode, ("H", "i"), &[KeyPress::Esc, KeyPress::Enter], "Hi");
+ }
+ }
+}
+
+#[test]
+fn newline_key() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_line(*mode, &[KeyPress::Ctrl('J')], "");
+ assert_line(*mode, &[KeyPress::Char('a'), KeyPress::Ctrl('J')], "a");
+ if *mode == EditMode::Vi {
+ // vi command mode
+ assert_line(*mode, &[KeyPress::Esc, KeyPress::Ctrl('J')], "");
+ assert_line(
+ *mode,
+ &[KeyPress::Char('a'), KeyPress::Esc, KeyPress::Ctrl('J')],
+ "a",
+ );
+ }
+ }
+}
+
+#[test]
+fn eof_key() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ let mut editor = init_editor(*mode, &[KeyPress::Ctrl('D')]);
+ let err = editor.readline(">>");
+ assert_matches!(err, Err(ReadlineError::Eof));
+ }
+ assert_line(
+ EditMode::Emacs,
+ &[KeyPress::Char('a'), KeyPress::Ctrl('D'), KeyPress::Enter],
+ "a",
+ );
+ assert_line(
+ EditMode::Vi,
+ &[KeyPress::Char('a'), KeyPress::Ctrl('D')],
+ "a",
+ );
+ assert_line(
+ EditMode::Vi,
+ &[KeyPress::Char('a'), KeyPress::Esc, KeyPress::Ctrl('D')],
+ "a",
+ );
+ assert_line_with_initial(
+ EditMode::Emacs,
+ ("", "Hi"),
+ &[KeyPress::Ctrl('D'), KeyPress::Enter],
+ "i",
+ );
+ assert_line_with_initial(EditMode::Vi, ("", "Hi"), &[KeyPress::Ctrl('D')], "Hi");
+ assert_line_with_initial(
+ EditMode::Vi,
+ ("", "Hi"),
+ &[KeyPress::Esc, KeyPress::Ctrl('D')],
+ "Hi",
+ );
+}
+
+#[test]
+fn interrupt_key() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ let mut editor = init_editor(*mode, &[KeyPress::Ctrl('C')]);
+ let err = editor.readline(">>");
+ assert_matches!(err, Err(ReadlineError::Interrupted));
+
+ let mut editor = init_editor(*mode, &[KeyPress::Ctrl('C')]);
+ let err = editor.readline_with_initial(">>", ("Hi", ""));
+ assert_matches!(err, Err(ReadlineError::Interrupted));
+ if *mode == EditMode::Vi {
+ // vi command mode
+ let mut editor = init_editor(*mode, &[KeyPress::Esc, KeyPress::Ctrl('C')]);
+ let err = editor.readline_with_initial(">>", ("Hi", ""));
+ assert_matches!(err, Err(ReadlineError::Interrupted));
+ }
+ }
+}
+
+#[test]
+fn delete_key() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_cursor(
+ *mode,
+ ("a", ""),
+ &[KeyPress::Delete, KeyPress::Enter],
+ ("a", ""),
+ );
+ assert_cursor(
+ *mode,
+ ("", "a"),
+ &[KeyPress::Delete, KeyPress::Enter],
+ ("", ""),
+ );
+ if *mode == EditMode::Vi {
+ // vi command mode
+ assert_cursor(
+ *mode,
+ ("", "a"),
+ &[KeyPress::Esc, KeyPress::Delete, KeyPress::Enter],
+ ("", ""),
+ );
+ }
+ }
+}
+
+#[test]
+fn ctrl_t() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_cursor(
+ *mode,
+ ("a", "b"),
+ &[KeyPress::Ctrl('T'), KeyPress::Enter],
+ ("ba", ""),
+ );
+ assert_cursor(
+ *mode,
+ ("ab", "cd"),
+ &[KeyPress::Ctrl('T'), KeyPress::Enter],
+ ("acb", "d"),
+ );
+ if *mode == EditMode::Vi {
+ // vi command mode
+ assert_cursor(
+ *mode,
+ ("ab", ""),
+ &[KeyPress::Esc, KeyPress::Ctrl('T'), KeyPress::Enter],
+ ("ba", ""),
+ );
+ }
+ }
+}
+
+#[test]
+fn ctrl_u() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_cursor(
+ *mode,
+ ("start of line ", "end"),
+ &[KeyPress::Ctrl('U'), KeyPress::Enter],
+ ("", "end"),
+ );
+ assert_cursor(
+ *mode,
+ ("", "end"),
+ &[KeyPress::Ctrl('U'), KeyPress::Enter],
+ ("", "end"),
+ );
+ if *mode == EditMode::Vi {
+ // vi command mode
+ assert_cursor(
+ *mode,
+ ("start of line ", "end"),
+ &[KeyPress::Esc, KeyPress::Ctrl('U'), KeyPress::Enter],
+ ("", " end"),
+ );
+ }
+ }
+}
+
+#[cfg(unix)]
+#[test]
+fn ctrl_v() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_cursor(
+ *mode,
+ ("", ""),
+ &[KeyPress::Ctrl('V'), KeyPress::Char('\t'), KeyPress::Enter],
+ ("\t", ""),
+ );
+ if *mode == EditMode::Vi {
+ // vi command mode
+ assert_cursor(
+ *mode,
+ ("", ""),
+ &[
+ KeyPress::Esc,
+ KeyPress::Ctrl('V'),
+ KeyPress::Char('\t'),
+ KeyPress::Enter,
+ ],
+ ("\t", ""),
+ );
+ }
+ }
+}
+
+#[test]
+fn ctrl_w() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_cursor(
+ *mode,
+ ("Hello, ", "world"),
+ &[KeyPress::Ctrl('W'), KeyPress::Enter],
+ ("", "world"),
+ );
+ assert_cursor(
+ *mode,
+ ("Hello, world.", ""),
+ &[KeyPress::Ctrl('W'), KeyPress::Enter],
+ ("Hello, ", ""),
+ );
+ if *mode == EditMode::Vi {
+ // vi command mode
+ assert_cursor(
+ *mode,
+ ("Hello, world.", ""),
+ &[KeyPress::Esc, KeyPress::Ctrl('W'), KeyPress::Enter],
+ ("Hello, ", "."),
+ );
+ }
+ }
+}
+
+#[test]
+fn ctrl_y() {
+ for mode in &[EditMode::Emacs /* FIXME, EditMode::Vi */] {
+ assert_cursor(
+ *mode,
+ ("Hello, ", "world"),
+ &[KeyPress::Ctrl('W'), KeyPress::Ctrl('Y'), KeyPress::Enter],
+ ("Hello, ", "world"),
+ );
+ }
+}
+
+#[test]
+fn ctrl__() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_cursor(
+ *mode,
+ ("Hello, ", "world"),
+ &[KeyPress::Ctrl('W'), KeyPress::Ctrl('_'), KeyPress::Enter],
+ ("Hello, ", "world"),
+ );
+ if *mode == EditMode::Vi {
+ // vi command mode
+ assert_cursor(
+ *mode,
+ ("Hello, ", "world"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Ctrl('W'),
+ KeyPress::Ctrl('_'),
+ KeyPress::Enter,
+ ],
+ ("Hello,", " world"),
+ );
+ }
+ }
+}
diff --git a/src/test/emacs.rs b/src/test/emacs.rs
new file mode 100644
index 0000000..67a1b10
--- /dev/null
+++ b/src/test/emacs.rs
@@ -0,0 +1,378 @@
+//! Emacs specific key bindings
+use super::{assert_cursor, assert_history};
+use config::EditMode;
+use consts::KeyPress;
+
+#[test]
+fn ctrl_a() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hi", ""),
+ &[KeyPress::Ctrl('A'), KeyPress::Enter],
+ ("", "Hi"),
+ );
+}
+
+#[test]
+fn ctrl_e() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("", "Hi"),
+ &[KeyPress::Ctrl('E'), KeyPress::Enter],
+ ("Hi", ""),
+ );
+}
+
+#[test]
+fn ctrl_b() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hi", ""),
+ &[KeyPress::Ctrl('B'), KeyPress::Enter],
+ ("H", "i"),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hi", ""),
+ &[KeyPress::Meta('2'), KeyPress::Ctrl('B'), KeyPress::Enter],
+ ("", "Hi"),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("", "Hi"),
+ &[
+ KeyPress::Meta('-'),
+ KeyPress::Meta('2'),
+ KeyPress::Ctrl('B'),
+ KeyPress::Enter,
+ ],
+ ("Hi", ""),
+ );
+}
+
+#[test]
+fn ctrl_f() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("", "Hi"),
+ &[KeyPress::Ctrl('F'), KeyPress::Enter],
+ ("H", "i"),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("", "Hi"),
+ &[KeyPress::Meta('2'), KeyPress::Ctrl('F'), KeyPress::Enter],
+ ("Hi", ""),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hi", ""),
+ &[
+ KeyPress::Meta('-'),
+ KeyPress::Meta('2'),
+ KeyPress::Ctrl('F'),
+ KeyPress::Enter,
+ ],
+ ("", "Hi"),
+ );
+}
+
+#[test]
+fn ctrl_h() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hi", ""),
+ &[KeyPress::Ctrl('H'), KeyPress::Enter],
+ ("H", ""),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hi", ""),
+ &[KeyPress::Meta('2'), KeyPress::Ctrl('H'), KeyPress::Enter],
+ ("", ""),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("", "Hi"),
+ &[
+ KeyPress::Meta('-'),
+ KeyPress::Meta('2'),
+ KeyPress::Ctrl('H'),
+ KeyPress::Enter,
+ ],
+ ("", ""),
+ );
+}
+
+#[test]
+fn backspace() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("", ""),
+ &[KeyPress::Backspace, KeyPress::Enter],
+ ("", ""),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hi", ""),
+ &[KeyPress::Backspace, KeyPress::Enter],
+ ("H", ""),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("", "Hi"),
+ &[KeyPress::Backspace, KeyPress::Enter],
+ ("", "Hi"),
+ );
+}
+
+#[test]
+fn ctrl_k() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hi", ""),
+ &[KeyPress::Ctrl('K'), KeyPress::Enter],
+ ("Hi", ""),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("", "Hi"),
+ &[KeyPress::Ctrl('K'), KeyPress::Enter],
+ ("", ""),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("B", "ye"),
+ &[KeyPress::Ctrl('K'), KeyPress::Enter],
+ ("B", ""),
+ );
+}
+
+#[test]
+fn ctrl_n() {
+ assert_history(
+ EditMode::Emacs,
+ &["line1", "line2"],
+ &[
+ KeyPress::Ctrl('P'),
+ KeyPress::Ctrl('P'),
+ KeyPress::Ctrl('N'),
+ KeyPress::Enter,
+ ],
+ ("line2", ""),
+ );
+}
+
+#[test]
+fn ctrl_p() {
+ assert_history(
+ EditMode::Emacs,
+ &["line1"],
+ &[KeyPress::Ctrl('P'), KeyPress::Enter],
+ ("line1", ""),
+ );
+}
+
+#[test]
+fn ctrl_t() {
+ /* FIXME
+ assert_cursor(
+ ("ab", "cd"),
+ &[KeyPress::Meta('2'), KeyPress::Ctrl('T'), KeyPress::Enter],
+ ("acdb", ""),
+ );*/
+}
+
+#[test]
+fn ctrl_x_ctrl_u() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hello, ", "world"),
+ &[
+ KeyPress::Ctrl('W'),
+ KeyPress::Ctrl('X'),
+ KeyPress::Ctrl('U'),
+ KeyPress::Enter,
+ ],
+ ("Hello, ", "world"),
+ );
+}
+
+#[test]
+fn meta_b() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hello, world!", ""),
+ &[KeyPress::Meta('B'), KeyPress::Enter],
+ ("Hello, ", "world!"),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hello, world!", ""),
+ &[KeyPress::Meta('2'), KeyPress::Meta('B'), KeyPress::Enter],
+ ("", "Hello, world!"),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("", "Hello, world!"),
+ &[KeyPress::Meta('-'), KeyPress::Meta('B'), KeyPress::Enter],
+ ("Hello", ", world!"),
+ );
+}
+
+#[test]
+fn meta_f() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("", "Hello, world!"),
+ &[KeyPress::Meta('F'), KeyPress::Enter],
+ ("Hello", ", world!"),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("", "Hello, world!"),
+ &[KeyPress::Meta('2'), KeyPress::Meta('F'), KeyPress::Enter],
+ ("Hello, world", "!"),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hello, world!", ""),
+ &[KeyPress::Meta('-'), KeyPress::Meta('F'), KeyPress::Enter],
+ ("Hello, ", "world!"),
+ );
+}
+
+#[test]
+fn meta_c() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("hi", ""),
+ &[KeyPress::Meta('C'), KeyPress::Enter],
+ ("hi", ""),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("", "hi"),
+ &[KeyPress::Meta('C'), KeyPress::Enter],
+ ("Hi", ""),
+ );
+ /* FIXME
+ assert_cursor(
+ ("", "hi test"),
+ &[KeyPress::Meta('2'), KeyPress::Meta('C'), KeyPress::Enter],
+ ("Hi Test", ""),
+ );*/
+}
+
+#[test]
+fn meta_l() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hi", ""),
+ &[KeyPress::Meta('L'), KeyPress::Enter],
+ ("Hi", ""),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("", "HI"),
+ &[KeyPress::Meta('L'), KeyPress::Enter],
+ ("hi", ""),
+ );
+ /* FIXME
+ assert_cursor(
+ ("", "HI TEST"),
+ &[KeyPress::Meta('2'), KeyPress::Meta('L'), KeyPress::Enter],
+ ("hi test", ""),
+ );*/
+}
+
+#[test]
+fn meta_u() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("hi", ""),
+ &[KeyPress::Meta('U'), KeyPress::Enter],
+ ("hi", ""),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("", "hi"),
+ &[KeyPress::Meta('U'), KeyPress::Enter],
+ ("HI", ""),
+ );
+ /* FIXME
+ assert_cursor(
+ ("", "hi test"),
+ &[KeyPress::Meta('2'), KeyPress::Meta('U'), KeyPress::Enter],
+ ("HI TEST", ""),
+ );*/
+}
+
+#[test]
+fn meta_d() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hello", ", world!"),
+ &[KeyPress::Meta('D'), KeyPress::Enter],
+ ("Hello", "!"),
+ );
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hello", ", world!"),
+ &[KeyPress::Meta('2'), KeyPress::Meta('D'), KeyPress::Enter],
+ ("Hello", ""),
+ );
+}
+
+#[test]
+fn meta_t() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hello", ", world!"),
+ &[KeyPress::Meta('T'), KeyPress::Enter],
+ ("world, Hello", "!"),
+ );
+ /* FIXME
+ assert_cursor(
+ ("One Two", " Three Four"),
+ &[KeyPress::Meta('T'), KeyPress::Enter],
+ ("One Four Three Two", ""),
+ );*/
+}
+
+#[test]
+fn meta_y() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hello, world", "!"),
+ &[
+ KeyPress::Ctrl('W'),
+ KeyPress::Left,
+ KeyPress::Ctrl('W'),
+ KeyPress::Ctrl('Y'),
+ KeyPress::Meta('Y'),
+ KeyPress::Enter,
+ ],
+ ("world", " !"),
+ );
+}
+
+#[test]
+fn meta_backspace() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("Hello, wor", "ld!"),
+ &[KeyPress::Meta('\x08'), KeyPress::Enter],
+ ("Hello, ", "ld!"),
+ );
+}
+
+#[test]
+fn meta_digit() {
+ assert_cursor(
+ EditMode::Emacs,
+ ("", ""),
+ &[KeyPress::Meta('3'), KeyPress::Char('h'), KeyPress::Enter],
+ ("hhh", ""),
+ );
+}
diff --git a/src/test/history.rs b/src/test/history.rs
new file mode 100644
index 0000000..faa7a3f
--- /dev/null
+++ b/src/test/history.rs
@@ -0,0 +1,206 @@
+//! History related commands tests
+use super::assert_history;
+use config::EditMode;
+use consts::KeyPress;
+
+#[test]
+fn down_key() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_history(
+ *mode,
+ &["line1"],
+ &[KeyPress::Down, KeyPress::Enter],
+ ("", ""),
+ );
+ assert_history(
+ *mode,
+ &["line1", "line2"],
+ &[KeyPress::Up, KeyPress::Up, KeyPress::Down, KeyPress::Enter],
+ ("line2", ""),
+ );
+ assert_history(
+ *mode,
+ &["line1"],
+ &[
+ KeyPress::Char('a'),
+ KeyPress::Up,
+ KeyPress::Down, // restore original line
+ KeyPress::Enter,
+ ],
+ ("a", ""),
+ );
+ assert_history(
+ *mode,
+ &["line1"],
+ &[
+ KeyPress::Char('a'),
+ KeyPress::Down, // noop
+ KeyPress::Enter,
+ ],
+ ("a", ""),
+ );
+ }
+}
+
+#[test]
+fn up_key() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_history(*mode, &[], &[KeyPress::Up, KeyPress::Enter], ("", ""));
+ assert_history(
+ *mode,
+ &["line1"],
+ &[KeyPress::Up, KeyPress::Enter],
+ ("line1", ""),
+ );
+ assert_history(
+ *mode,
+ &["line1", "line2"],
+ &[KeyPress::Up, KeyPress::Up, KeyPress::Enter],
+ ("line1", ""),
+ );
+ }
+}
+
+#[test]
+fn ctrl_r() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_history(
+ *mode,
+ &[],
+ &[KeyPress::Ctrl('R'), KeyPress::Char('o'), KeyPress::Enter],
+ ("o", ""),
+ );
+ assert_history(
+ *mode,
+ &["rustc", "cargo"],
+ &[
+ KeyPress::Ctrl('R'),
+ KeyPress::Char('o'),
+ KeyPress::Right, // just to assert cursor pos
+ KeyPress::Enter,
+ ],
+ ("cargo", ""),
+ );
+ assert_history(
+ *mode,
+ &["rustc", "cargo"],
+ &[
+ KeyPress::Ctrl('R'),
+ KeyPress::Char('u'),
+ KeyPress::Right, // just to assert cursor pos
+ KeyPress::Enter,
+ ],
+ ("ru", "stc"),
+ );
+ assert_history(
+ *mode,
+ &["rustc", "cargo"],
+ &[
+ KeyPress::Ctrl('R'),
+ KeyPress::Char('r'),
+ KeyPress::Char('u'),
+ KeyPress::Right, // just to assert cursor pos
+ KeyPress::Enter,
+ ],
+ ("r", "ustc"),
+ );
+ assert_history(
+ *mode,
+ &["rustc", "cargo"],
+ &[
+ KeyPress::Ctrl('R'),
+ KeyPress::Char('r'),
+ KeyPress::Ctrl('R'),
+ KeyPress::Right, // just to assert cursor pos
+ KeyPress::Enter,
+ ],
+ ("r", "ustc"),
+ );
+ assert_history(
+ *mode,
+ &["rustc", "cargo"],
+ &[
+ KeyPress::Ctrl('R'),
+ KeyPress::Char('r'),
+ KeyPress::Char('z'), // no match
+ KeyPress::Right, // just to assert cursor pos
+ KeyPress::Enter,
+ ],
+ ("car", "go"),
+ );
+ assert_history(
+ EditMode::Emacs,
+ &["rustc", "cargo"],
+ &[
+ KeyPress::Char('a'),
+ KeyPress::Ctrl('R'),
+ KeyPress::Char('r'),
+ KeyPress::Ctrl('G'), // abort (FIXME: doesn't work with vi mode)
+ KeyPress::Enter,
+ ],
+ ("a", ""),
+ );
+ }
+}
+
+#[test]
+fn ctrl_s() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_history(
+ *mode,
+ &["rustc", "cargo"],
+ &[
+ KeyPress::Ctrl('R'),
+ KeyPress::Char('r'),
+ KeyPress::Ctrl('R'),
+ KeyPress::Ctrl('S'),
+ KeyPress::Right, // just to assert cursor pos
+ KeyPress::Enter,
+ ],
+ ("car", "go"),
+ );
+ }
+}
+
+#[test]
+fn meta_lt() {
+ assert_history(
+ EditMode::Emacs,
+ &[""],
+ &[KeyPress::Meta('<'), KeyPress::Enter],
+ ("", ""),
+ );
+ assert_history(
+ EditMode::Emacs,
+ &["rustc", "cargo"],
+ &[KeyPress::Meta('<'), KeyPress::Enter],
+ ("rustc", ""),
+ );
+}
+
+#[test]
+fn meta_gt() {
+ assert_history(
+ EditMode::Emacs,
+ &[""],
+ &[KeyPress::Meta('>'), KeyPress::Enter],
+ ("", ""),
+ );
+ assert_history(
+ EditMode::Emacs,
+ &["rustc", "cargo"],
+ &[KeyPress::Meta('<'), KeyPress::Meta('>'), KeyPress::Enter],
+ ("", ""),
+ );
+ assert_history(
+ EditMode::Emacs,
+ &["rustc", "cargo"],
+ &[
+ KeyPress::Char('a'),
+ KeyPress::Meta('<'),
+ KeyPress::Meta('>'), // restore original line
+ KeyPress::Enter,
+ ],
+ ("a", ""),
+ );
+}
diff --git a/src/test/mod.rs b/src/test/mod.rs
new file mode 100644
index 0000000..d3216de
--- /dev/null
+++ b/src/test/mod.rs
@@ -0,0 +1,103 @@
+use std::collections::HashMap;
+use std::sync::{Arc, RwLock};
+
+use super::{Editor, Result};
+use completion::Completer;
+use config::{Config, EditMode};
+use consts::KeyPress;
+use edit::init_state;
+use keymap::{Cmd, InputState};
+use tty::Sink;
+
+mod common;
+mod emacs;
+mod history;
+mod vi_cmd;
+mod vi_insert;
+
+fn init_editor(mode: EditMode, keys: &[KeyPress]) -> Editor<()> {
+ let config = Config::builder().edit_mode(mode).build();
+ let mut editor = Editor::<()>::with_config(config);
+ editor.term.keys.extend(keys.iter().cloned());
+ editor
+}
+
+struct SimpleCompleter;
+impl Completer for SimpleCompleter {
+ fn complete(&self, line: &str, _pos: usize) -> Result<(usize, Vec<String>)> {
+ Ok((0, vec![line.to_owned() + "t"]))
+ }
+}
+
+#[test]
+fn complete_line() {
+ let mut out = Sink::new();
+ let mut s = init_state(&mut out, "rus", 3);
+ let config = Config::default();
+ let mut input_state = InputState::new(&config, Arc::new(RwLock::new(HashMap::new())));
+ let keys = &[KeyPress::Enter];
+ let mut rdr = keys.iter();
+ let completer = SimpleCompleter;
+ let cmd = super::complete_line(
+ &mut rdr,
+ &mut s,
+ &mut input_state,
+ &completer,
+ &Config::default(),
+ ).unwrap();
+ assert_eq!(Some(Cmd::AcceptLine), cmd);
+ assert_eq!("rust", s.line.as_str());
+ assert_eq!(4, s.line.pos());
+}
+
+// `keys`: keys to press
+// `expected_line`: line after enter key
+fn assert_line(mode: EditMode, keys: &[KeyPress], expected_line: &str) {
+ let mut editor = init_editor(mode, keys);
+ let actual_line = editor.readline(">>").unwrap();
+ assert_eq!(expected_line, actual_line);
+}
+
+// `initial`: line status before `keys` pressed: strings before and after cursor
+// `keys`: keys to press
+// `expected_line`: line after enter key
+fn assert_line_with_initial(
+ mode: EditMode,
+ initial: (&str, &str),
+ keys: &[KeyPress],
+ expected_line: &str,
+) {
+ let mut editor = init_editor(mode, keys);
+ let actual_line = editor.readline_with_initial(">>", initial).unwrap();
+ assert_eq!(expected_line, actual_line);
+}
+
+// `initial`: line status before `keys` pressed: strings before and after cursor
+// `keys`: keys to press
+// `expected`: line status before enter key: strings before and after cursor
+fn assert_cursor(mode: EditMode, initial: (&str, &str), keys: &[KeyPress], expected: (&str, &str)) {
+ let mut editor = init_editor(mode, keys);
+ let actual_line = editor.readline_with_initial("", initial).unwrap();
+ assert_eq!(expected.0.to_owned() + expected.1, actual_line);
+ assert_eq!(expected.0.len(), editor.term.cursor);
+}
+
+// `entries`: history entries before `keys` pressed
+// `keys`: keys to press
+// `expected`: line status before enter key: strings before and after cursor
+fn assert_history(mode: EditMode, entries: &[&str], keys: &[KeyPress], expected: (&str, &str)) {
+ let mut editor = init_editor(mode, keys);
+ for entry in entries {
+ editor.history.add(*entry);
+ }
+ let actual_line = editor.readline("").unwrap();
+ assert_eq!(expected.0.to_owned() + expected.1, actual_line);
+ assert_eq!(expected.0.len(), editor.term.cursor);
+}
+
+#[test]
+fn unknown_esc_key() {
+ for mode in &[EditMode::Emacs, EditMode::Vi] {
+ assert_line(*mode, &[KeyPress::UnknownEscSeq, KeyPress::Enter], "");
+ }
+}
diff --git a/src/test/vi_cmd.rs b/src/test/vi_cmd.rs
new file mode 100644
index 0000000..1c1e4e9
--- /dev/null
+++ b/src/test/vi_cmd.rs
@@ -0,0 +1,611 @@
+//! Vi command mode specific key bindings
+use super::{assert_cursor, assert_history};
+use config::EditMode;
+use consts::KeyPress;
+
+#[test]
+fn dollar() {
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hi"),
+ &[KeyPress::Esc, KeyPress::Char('$'), KeyPress::Enter],
+ ("Hi", ""), // FIXME
+ );
+}
+
+/*#[test]
+fn dot() {
+ // TODO
+}*/
+
+#[test]
+fn semi_colon() {
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hello, world!"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('f'),
+ KeyPress::Char('o'),
+ KeyPress::Char(';'),
+ KeyPress::Enter,
+ ],
+ ("Hello, w", "orld!"),
+ );
+}
+
+#[test]
+fn comma() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Hello, w", "orld!"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('f'),
+ KeyPress::Char('l'),
+ KeyPress::Char(','),
+ KeyPress::Enter,
+ ],
+ ("Hel", "lo, world!"),
+ );
+}
+
+#[test]
+fn zero() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Hi", ""),
+ &[KeyPress::Esc, KeyPress::Char('0'), KeyPress::Enter],
+ ("", "Hi"),
+ );
+}
+
+#[test]
+fn caret() {
+ assert_cursor(
+ EditMode::Vi,
+ (" Hi", ""),
+ &[KeyPress::Esc, KeyPress::Char('^'), KeyPress::Enter],
+ (" ", "Hi"),
+ );
+}
+
+#[test]
+fn a() {
+ assert_cursor(
+ EditMode::Vi,
+ ("B", "e"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('a'),
+ KeyPress::Char('y'),
+ KeyPress::Enter,
+ ],
+ ("By", "e"),
+ );
+}
+
+#[test]
+fn uppercase_a() {
+ assert_cursor(
+ EditMode::Vi,
+ ("", "By"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('A'),
+ KeyPress::Char('e'),
+ KeyPress::Enter,
+ ],
+ ("Bye", ""),
+ );
+}
+
+#[test]
+fn b() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Hello, world!", ""),
+ &[KeyPress::Esc, KeyPress::Char('b'), KeyPress::Enter],
+ ("Hello, ", "world!"),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("Hello, world!", ""),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('2'),
+ KeyPress::Char('b'),
+ KeyPress::Enter,
+ ],
+ ("Hello", ", world!"),
+ );
+}
+
+#[test]
+fn uppercase_b() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Hello, world!", ""),
+ &[KeyPress::Esc, KeyPress::Char('B'), KeyPress::Enter],
+ ("Hello, ", "world!"),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("Hello, world!", ""),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('2'),
+ KeyPress::Char('B'),
+ KeyPress::Enter,
+ ],
+ ("", "Hello, world!"),
+ );
+}
+
+#[test]
+fn uppercase_c() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Hello, w", "orld!"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('C'),
+ KeyPress::Char('i'),
+ KeyPress::Enter,
+ ],
+ ("Hello, i", ""),
+ );
+}
+
+#[test]
+fn ctrl_k() {
+ for key in &[KeyPress::Char('D'), KeyPress::Ctrl('K')] {
+ assert_cursor(
+ EditMode::Vi,
+ ("Hi", ""),
+ &[KeyPress::Esc, *key, KeyPress::Enter],
+ ("H", ""),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hi"),
+ &[KeyPress::Esc, *key, KeyPress::Enter],
+ ("", ""),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("By", "e"),
+ &[KeyPress::Esc, *key, KeyPress::Enter],
+ ("B", ""),
+ );
+ }
+}
+
+#[test]
+fn e() {
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hello, world!"),
+ &[KeyPress::Esc, KeyPress::Char('e'), KeyPress::Enter],
+ ("Hell", "o, world!"),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hello, world!"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('2'),
+ KeyPress::Char('e'),
+ KeyPress::Enter,
+ ],
+ ("Hello, worl", "d!"),
+ );
+}
+
+#[test]
+fn uppercase_e() {
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hello, world!"),
+ &[KeyPress::Esc, KeyPress::Char('E'), KeyPress::Enter],
+ ("Hello", ", world!"),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hello, world!"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('2'),
+ KeyPress::Char('E'),
+ KeyPress::Enter,
+ ],
+ ("Hello, world", "!"),
+ );
+}
+
+#[test]
+fn f() {
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hello, world!"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('f'),
+ KeyPress::Char('r'),
+ KeyPress::Enter,
+ ],
+ ("Hello, wo", "rld!"),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hello, world!"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('3'),
+ KeyPress::Char('f'),
+ KeyPress::Char('l'),
+ KeyPress::Enter,
+ ],
+ ("Hello, wor", "ld!"),
+ );
+}
+
+#[test]
+fn uppercase_f() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Hello, world!", ""),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('F'),
+ KeyPress::Char('r'),
+ KeyPress::Enter,
+ ],
+ ("Hello, wo", "rld!"),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("Hello, world!", ""),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('3'),
+ KeyPress::Char('F'),
+ KeyPress::Char('l'),
+ KeyPress::Enter,
+ ],
+ ("He", "llo, world!"),
+ );
+}
+
+#[test]
+fn i() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Be", ""),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('i'),
+ KeyPress::Char('y'),
+ KeyPress::Enter,
+ ],
+ ("By", "e"),
+ );
+}
+
+#[test]
+fn uppercase_i() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Be", ""),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('I'),
+ KeyPress::Char('y'),
+ KeyPress::Enter,
+ ],
+ ("y", "Be"),
+ );
+}
+
+#[test]
+fn u() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Hello, ", "world"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Ctrl('W'),
+ KeyPress::Char('u'),
+ KeyPress::Enter,
+ ],
+ ("Hello,", " world"),
+ );
+}
+
+#[test]
+fn w() {
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hello, world!"),
+ &[KeyPress::Esc, KeyPress::Char('w'), KeyPress::Enter],
+ ("Hello", ", world!"),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hello, world!"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('2'),
+ KeyPress::Char('w'),
+ KeyPress::Enter,
+ ],
+ ("Hello, ", "world!"),
+ );
+}
+
+#[test]
+fn uppercase_w() {
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hello, world!"),
+ &[KeyPress::Esc, KeyPress::Char('W'), KeyPress::Enter],
+ ("Hello, ", "world!"),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hello, world!"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('2'),
+ KeyPress::Char('W'),
+ KeyPress::Enter,
+ ],
+ ("Hello, world", "!"),
+ );
+}
+
+#[test]
+fn x() {
+ assert_cursor(
+ EditMode::Vi,
+ ("", "a"),
+ &[KeyPress::Esc, KeyPress::Char('x'), KeyPress::Enter],
+ ("", ""),
+ );
+}
+
+#[test]
+fn uppercase_x() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Hi", ""),
+ &[KeyPress::Esc, KeyPress::Char('X'), KeyPress::Enter],
+ ("", "i"),
+ );
+}
+
+#[test]
+fn h() {
+ for key in &[
+ KeyPress::Char('h'),
+ KeyPress::Ctrl('H'),
+ KeyPress::Backspace,
+ ] {
+ assert_cursor(
+ EditMode::Vi,
+ ("Bye", ""),
+ &[KeyPress::Esc, *key, KeyPress::Enter],
+ ("B", "ye"),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("Bye", ""),
+ &[KeyPress::Esc, KeyPress::Char('2'), *key, KeyPress::Enter],
+ ("", "Bye"),
+ );
+ }
+}
+
+#[test]
+fn l() {
+ for key in &[KeyPress::Char('l'), KeyPress::Char(' ')] {
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hi"),
+ &[KeyPress::Esc, *key, KeyPress::Enter],
+ ("H", "i"),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hi"),
+ &[KeyPress::Esc, KeyPress::Char('2'), *key, KeyPress::Enter],
+ ("Hi", ""),
+ );
+ }
+}
+
+#[test]
+fn j() {
+ for key in &[
+ KeyPress::Char('j'),
+ KeyPress::Char('+'),
+ KeyPress::Ctrl('N'),
+ ] {
+ assert_history(
+ EditMode::Vi,
+ &["line1", "line2"],
+ &[
+ KeyPress::Esc,
+ KeyPress::Ctrl('P'),
+ KeyPress::Ctrl('P'),
+ *key,
+ KeyPress::Enter,
+ ],
+ ("line2", ""),
+ );
+ }
+}
+
+#[test]
+fn k() {
+ for key in &[
+ KeyPress::Char('k'),
+ KeyPress::Char('-'),
+ KeyPress::Ctrl('P'),
+ ] {
+ assert_history(
+ EditMode::Vi,
+ &["line1"],
+ &[KeyPress::Esc, *key, KeyPress::Enter],
+ ("line1", ""),
+ );
+ }
+}
+
+#[test]
+fn p() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Hello, ", "world"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Ctrl('W'),
+ KeyPress::Char('p'),
+ KeyPress::Enter,
+ ],
+ (" Hello", ",world"),
+ );
+}
+
+#[test]
+fn uppercase_p() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Hello, ", "world"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Ctrl('W'),
+ KeyPress::Char('P'),
+ KeyPress::Enter,
+ ],
+ ("Hello", ", world"),
+ );
+}
+
+#[test]
+fn r() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Hi", ", world!"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('r'),
+ KeyPress::Char('o'),
+ KeyPress::Enter,
+ ],
+ ("H", "o, world!"),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("He", "llo, world!"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('4'),
+ KeyPress::Char('r'),
+ KeyPress::Char('i'),
+ KeyPress::Enter,
+ ],
+ ("Hiii", "i, world!"),
+ );
+}
+
+#[test]
+fn s() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Hi", ", world!"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('s'),
+ KeyPress::Char('o'),
+ KeyPress::Enter,
+ ],
+ ("Ho", ", world!"),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("He", "llo, world!"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('4'),
+ KeyPress::Char('s'),
+ KeyPress::Char('i'),
+ KeyPress::Enter,
+ ],
+ ("Hi", ", world!"),
+ );
+}
+
+#[test]
+fn uppercase_s() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Hello, ", "world"),
+ &[KeyPress::Esc, KeyPress::Char('S'), KeyPress::Enter],
+ ("", ""),
+ );
+}
+
+#[test]
+fn t() {
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hello, world!"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('t'),
+ KeyPress::Char('r'),
+ KeyPress::Enter,
+ ],
+ ("Hello, w", "orld!"),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hello, world!"),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('3'),
+ KeyPress::Char('t'),
+ KeyPress::Char('l'),
+ KeyPress::Enter,
+ ],
+ ("Hello, wo", "rld!"),
+ );
+}
+
+#[test]
+fn uppercase_t() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Hello, world!", ""),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('T'),
+ KeyPress::Char('r'),
+ KeyPress::Enter,
+ ],
+ ("Hello, wor", "ld!"),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("Hello, world!", ""),
+ &[
+ KeyPress::Esc,
+ KeyPress::Char('3'),
+ KeyPress::Char('T'),
+ KeyPress::Char('l'),
+ KeyPress::Enter,
+ ],
+ ("Hel", "lo, world!"),
+ );
+}
diff --git a/src/test/vi_insert.rs b/src/test/vi_insert.rs
new file mode 100644
index 0000000..cf86680
--- /dev/null
+++ b/src/test/vi_insert.rs
@@ -0,0 +1,56 @@
+//! Vi insert mode specific key bindings
+use super::assert_cursor;
+use config::EditMode;
+use consts::KeyPress;
+
+#[test]
+fn insert_mode_by_default() {
+ assert_cursor(
+ EditMode::Vi,
+ ("", ""),
+ &[KeyPress::Char('a'), KeyPress::Enter],
+ ("a", ""),
+ );
+}
+
+#[test]
+fn ctrl_h() {
+ assert_cursor(
+ EditMode::Vi,
+ ("Hi", ""),
+ &[KeyPress::Ctrl('H'), KeyPress::Enter],
+ ("H", ""),
+ );
+}
+
+#[test]
+fn backspace() {
+ assert_cursor(
+ EditMode::Vi,
+ ("", ""),
+ &[KeyPress::Backspace, KeyPress::Enter],
+ ("", ""),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("Hi", ""),
+ &[KeyPress::Backspace, KeyPress::Enter],
+ ("H", ""),
+ );
+ assert_cursor(
+ EditMode::Vi,
+ ("", "Hi"),
+ &[KeyPress::Backspace, KeyPress::Enter],
+ ("", "Hi"),
+ );
+}
+
+#[test]
+fn esc() {
+ assert_cursor(
+ EditMode::Vi,
+ ("", ""),
+ &[KeyPress::Char('a'), KeyPress::Esc, KeyPress::Enter],
+ ("", "a"),
+ );
+}
diff --git a/src/tty/mod.rs b/src/tty/mod.rs
index fe3ac99..e6c42dc 100644
--- a/src/tty/mod.rs
+++ b/src/tty/mod.rs
@@ -1,49 +1,181 @@
//! This module implements and describes common TTY methods & traits
-use std::io::Write;
-use Result;
+use std::io::{self, Write};
+use unicode_segmentation::UnicodeSegmentation;
+use unicode_width::UnicodeWidthStr;
+
use config::Config;
use consts::KeyPress;
+use line_buffer::LineBuffer;
+use Result;
/// Terminal state
-pub trait RawMode: Copy + Sized {
+pub trait RawMode: Sized {
/// Disable RAW mode for the terminal.
fn disable_raw_mode(&self) -> Result<()>;
}
/// Translate bytes read from stdin to keys.
-pub trait RawReader: Sized {
+pub trait RawReader {
/// Blocking read of key pressed.
- fn next_key(&mut self) -> Result<KeyPress>;
+ fn next_key(&mut self, single_esc_abort: bool) -> Result<KeyPress>;
/// For CTRL-V support
#[cfg(unix)]
fn next_char(&mut self) -> Result<char>;
}
-/// Terminal contract
-pub trait Term: Clone {
- type Reader: RawReader;
- type Writer: Write;
- type Mode: RawMode;
+#[derive(Copy, Clone, Debug, Default, PartialEq, Eq)]
+pub struct Position {
+ pub col: usize,
+ pub row: usize,
+}
- fn new() -> Self;
- /// Check if current terminal can provide a rich line-editing user interface.
- fn is_unsupported(&self) -> bool;
- /// check if stdin is connected to a terminal.
- fn is_stdin_tty(&self) -> bool;
+/// Display prompt, line and cursor in terminal output
+pub trait Renderer {
+ fn move_cursor(&mut self, old: Position, new: Position) -> Result<()>;
+
+ /// Display prompt, line and cursor in terminal output
+ fn refresh_line(
+ &mut self,
+ prompt: &str,
+ prompt_size: Position,
+ line: &LineBuffer,
+ hint: Option<String>,
+ current_row: usize,
+ old_rows: usize,
+ ) -> Result<(Position, Position)>;
+
+ /// Calculate the number of columns and rows used to display `s` on a
+ /// `cols` width terminal
+ /// starting at `orig`.
+ fn calculate_position(&self, s: &str, orig: Position) -> Position;
+
+ fn write_and_flush(&mut self, buf: &[u8]) -> Result<()>;
+
+ /// Beep, used for completion when there is nothing to complete or when all
+ /// the choices were already shown.
+ fn beep(&mut self) -> Result<()> {
+ // TODO bell-style
+ try!(io::stderr().write_all(b"\x07"));
+ try!(io::stderr().flush());
+ Ok(())
+ }
+
+ /// Clear the screen. Used to handle ctrl+l
+ fn clear_screen(&mut self) -> Result<()>;
+
+ /// Check if a SIGWINCH signal has been received
+ fn sigwinch(&self) -> bool;
+ /// Update the number of columns/rows in the current terminal.
+ fn update_size(&mut self);
/// Get the number of columns in the current terminal.
fn get_columns(&self) -> usize;
/// Get the number of rows in the current terminal.
fn get_rows(&self) -> usize;
- /// Check if a SIGWINCH signal has been received
- fn sigwinch(&self) -> bool;
+}
+
+impl<'a, R: Renderer + ?Sized> Renderer for &'a mut R {
+ fn move_cursor(&mut self, old: Position, new: Position) -> Result<()> {
+ (**self).move_cursor(old, new)
+ }
+ fn refresh_line(
+ &mut self,
+ prompt: &str,
+ prompt_size: Position,
+ line: &LineBuffer,
+ hint: Option<String>,
+ current_row: usize,
+ old_rows: usize,
+ ) -> Result<(Position, Position)> {
+ (**self).refresh_line(prompt, prompt_size, line, hint, current_row, old_rows)
+ }
+ fn calculate_position(&self, s: &str, orig: Position) -> Position {
+ (**self).calculate_position(s, orig)
+ }
+ fn write_and_flush(&mut self, buf: &[u8]) -> Result<()> {
+ (**self).write_and_flush(buf)
+ }
+ fn beep(&mut self) -> Result<()> {
+ (**self).beep()
+ }
+ fn clear_screen(&mut self) -> Result<()> {
+ (**self).clear_screen()
+ }
+ fn sigwinch(&self) -> bool {
+ (**self).sigwinch()
+ }
+ fn update_size(&mut self) {
+ (**self).update_size()
+ }
+ fn get_columns(&self) -> usize {
+ (**self).get_columns()
+ }
+ fn get_rows(&self) -> usize {
+ (**self).get_rows()
+ }
+}
+
+/// Terminal contract
+pub trait Term {
+ type Reader: RawReader; // rl_instream
+ type Writer: Renderer; // rl_outstream
+ type Mode: RawMode;
+
+ fn new() -> Self;
+ /// Check if current terminal can provide a rich line-editing user
+ /// interface.
+ fn is_unsupported(&self) -> bool;
+ /// check if stdin is connected to a terminal.
+ fn is_stdin_tty(&self) -> bool;
/// Enable RAW mode for the terminal.
fn enable_raw_mode(&self) -> Result<Self::Mode>;
/// Create a RAW reader
fn create_reader(&self, config: &Config) -> Result<Self::Reader>;
/// Create a writer
fn create_writer(&self) -> Self::Writer;
- /// Clear the screen. Used to handle ctrl+l
- fn clear_screen(&mut self, w: &mut Write) -> Result<()>;
+}
+
+fn truncate(text: &str, col: usize, max_col: usize) -> &str {
+ let mut col = col;
+ let mut esc_seq = 0;
+ let mut end = text.len();
+ for (i, s) in text.grapheme_indices(true) {
+ col += width(s, &mut esc_seq);
+ if col > max_col {
+ end = i;
+ break;
+ }
+ }
+ &text[..end]
+}
+
+fn width(s: &str, esc_seq: &mut u8) -> usize {
+ if *esc_seq == 1 {
+ if s == "[" {
+ // CSI
+ *esc_seq = 2;
+ } else {
+ // two-character sequence
+ *esc_seq = 0;
+ }
+ 0
+ } else if *esc_seq == 2 {
+ if s == ";" || (s.as_bytes()[0] >= b'0' && s.as_bytes()[0] <= b'9') {
+ /*} else if s == "m" {
+ // last
+ *esc_seq = 0;*/
+ } else {
+ // not supported
+ *esc_seq = 0;
+ }
+ 0
+ } else if s == "\x1b" {
+ *esc_seq = 1;
+ 0
+ } else if s == "\n" {
+ 0
+ } else {
+ s.width()
+ }
}
// If on Windows platform import Windows TTY module
diff --git a/src/tty/test.rs b/src/tty/test.rs
index 8813fa5..29a1e79 100644
--- a/src/tty/test.rs
+++ b/src/tty/test.rs
@@ -1,17 +1,14 @@
//! Tests specific definitions
-use std::io::{self, Sink, Write};
use std::iter::IntoIterator;
use std::slice::Iter;
use std::vec::IntoIter;
-#[cfg(windows)]
-use winapi;
-
+use super::{truncate, Position, RawMode, RawReader, Renderer, Term};
use config::Config;
use consts::KeyPress;
use error::ReadlineError;
+use line_buffer::LineBuffer;
use Result;
-use super::{RawMode, RawReader, Term};
pub type Mode = ();
@@ -22,7 +19,7 @@
}
impl<'a> RawReader for Iter<'a, KeyPress> {
- fn next_key(&mut self) -> Result<KeyPress> {
+ fn next_key(&mut self, _: bool) -> Result<KeyPress> {
match self.next() {
Some(key) => Ok(*key),
None => Err(ReadlineError::Eof),
@@ -35,7 +32,7 @@
}
impl RawReader for IntoIter<KeyPress> {
- fn next_key(&mut self) -> Result<KeyPress> {
+ fn next_key(&mut self, _: bool) -> Result<KeyPress> {
match self.next() {
Some(key) => Ok(key),
None => Err(ReadlineError::Eof),
@@ -43,50 +40,80 @@
}
#[cfg(unix)]
fn next_char(&mut self) -> Result<char> {
- unimplemented!();
+ match self.next() {
+ Some(KeyPress::Char(c)) => Ok(c),
+ None => Err(ReadlineError::Eof),
+ _ => unimplemented!(),
+ }
+ }
+}
+
+pub struct Sink {}
+
+impl Sink {
+ pub fn new() -> Sink {
+ Sink {}
+ }
+}
+
+impl Renderer for Sink {
+ fn move_cursor(&mut self, _: Position, _: Position) -> Result<()> {
+ Ok(())
+ }
+
+ fn refresh_line(
+ &mut self,
+ _: &str,
+ prompt_size: Position,
+ line: &LineBuffer,
+ hint: Option<String>,
+ _: usize,
+ _: usize,
+ ) -> Result<(Position, Position)> {
+ let cursor = self.calculate_position(&line[..line.pos()], prompt_size);
+ if let Some(hint) = hint {
+ truncate(&hint, 0, 80);
+ }
+ let end = self.calculate_position(&line, prompt_size);
+ Ok((cursor, end))
+ }
+
+ fn calculate_position(&self, s: &str, orig: Position) -> Position {
+ let mut pos = orig;
+ pos.col += s.len();
+ pos
+ }
+
+ fn write_and_flush(&mut self, _: &[u8]) -> Result<()> {
+ Ok(())
+ }
+
+ fn beep(&mut self) -> Result<()> {
+ Ok(())
+ }
+
+ fn clear_screen(&mut self) -> Result<()> {
+ Ok(())
+ }
+
+ fn sigwinch(&self) -> bool {
+ false
+ }
+ fn update_size(&mut self) {}
+ fn get_columns(&self) -> usize {
+ 80
+ }
+ fn get_rows(&self) -> usize {
+ 24
}
}
pub type Terminal = DummyTerminal;
-#[derive(Clone,Debug)]
+#[derive(Clone, Debug)]
pub struct DummyTerminal {
pub keys: Vec<KeyPress>,
-}
-
-impl DummyTerminal {
- #[cfg(windows)]
- pub fn get_console_screen_buffer_info(&self) -> Result<winapi::CONSOLE_SCREEN_BUFFER_INFO> {
- let dw_size = winapi::COORD { X: 80, Y: 24 };
- let dw_cursor_osition = winapi::COORD { X: 0, Y: 0 };
- let sr_window = winapi::SMALL_RECT {
- Left: 0,
- Top: 0,
- Right: 0,
- Bottom: 0,
- };
- let info = winapi::CONSOLE_SCREEN_BUFFER_INFO {
- dwSize: dw_size,
- dwCursorPosition: dw_cursor_osition,
- wAttributes: 0,
- srWindow: sr_window,
- dwMaximumWindowSize: dw_size,
- };
- Ok(info)
- }
-
- #[cfg(windows)]
- pub fn set_console_cursor_position(&mut self, _: winapi::COORD) -> Result<()> {
- Ok(())
- }
-
- #[cfg(windows)]
- pub fn fill_console_output_character(&mut self,
- _: winapi::DWORD,
- _: winapi::COORD)
- -> Result<()> {
- Ok(())
- }
+ pub cursor: usize, // cursor position before last command
}
impl Term for DummyTerminal {
@@ -95,54 +122,34 @@
type Mode = Mode;
fn new() -> DummyTerminal {
- DummyTerminal { keys: Vec::new() }
+ DummyTerminal {
+ keys: Vec::new(),
+ cursor: 0,
+ }
}
// Init checks:
- /// Check if current terminal can provide a rich line-editing user interface.
fn is_unsupported(&self) -> bool {
false
}
- /// check if stdin is connected to a terminal.
fn is_stdin_tty(&self) -> bool {
true
}
// Interactive loop:
- /// Get the number of columns in the current terminal.
- fn get_columns(&self) -> usize {
- 80
- }
-
- /// Get the number of rows in the current terminal.
- fn get_rows(&self) -> usize {
- 24
- }
-
- /// Check if a SIGWINCH signal has been received
- fn sigwinch(&self) -> bool {
- false
- }
-
fn enable_raw_mode(&self) -> Result<Mode> {
Ok(())
}
- /// Create a RAW reader
fn create_reader(&self, _: &Config) -> Result<IntoIter<KeyPress>> {
Ok(self.keys.clone().into_iter())
}
fn create_writer(&self) -> Sink {
- io::sink()
- }
-
- /// Clear the screen. Used to handle ctrl+l
- fn clear_screen(&mut self, _: &mut Write) -> Result<()> {
- Ok(())
+ Sink {}
}
}
diff --git a/src/tty/unix.rs b/src/tty/unix.rs
index 17a439e..b1d5b78 100644
--- a/src/tty/unix.rs
+++ b/src/tty/unix.rs
@@ -3,18 +3,21 @@
use std::io::{self, Read, Stdout, Write};
use std::sync;
use std::sync::atomic;
+
use libc;
use nix;
-use nix::poll;
+use nix::poll::{self, EventFlags};
use nix::sys::signal;
use nix::sys::termios;
+use nix::sys::termios::SetArg;
+use unicode_segmentation::UnicodeSegmentation;
-use char_iter;
+use super::{truncate, width, Position, RawMode, RawReader, Renderer, Term};
use config::Config;
use consts::{self, KeyPress};
-use Result;
use error;
-use super::{RawMode, RawReader, Term};
+use line_buffer::LineBuffer;
+use Result;
const STDIN_FILENO: libc::c_int = libc::STDIN_FILENO;
const STDOUT_FILENO: libc::c_int = libc::STDOUT_FILENO;
@@ -27,7 +30,8 @@
unsafe {
let mut size: libc::winsize = zeroed();
- match libc::ioctl(STDOUT_FILENO, libc::TIOCGWINSZ, &mut size) {
+ match libc::ioctl(STDOUT_FILENO, libc::TIOCGWINSZ.into(), &mut size) {
+ // .into() for FreeBSD
0 => (size.ws_col as usize, size.ws_row as usize), // TODO getCursorPosition
_ => (80, 24),
}
@@ -37,7 +41,6 @@
/// Check TERM environment variable to see if current term is in our
/// unsupported list
fn is_unsupported_term() -> bool {
- use std::ascii::AsciiExt;
match std::env::var("TERM") {
Ok(term) => {
for iter in &UNSUPPORTED_TERM {
@@ -51,7 +54,6 @@
}
}
-
/// Return whether or not STDIN, STDOUT or STDERR is a TTY
fn is_a_tty(fd: libc::c_int) -> bool {
unsafe { libc::isatty(fd) != 0 }
@@ -62,7 +64,7 @@
impl RawMode for Mode {
/// Disable RAW mode for the terminal.
fn disable_raw_mode(&self) -> Result<()> {
- try!(termios::tcsetattr(STDIN_FILENO, termios::TCSADRAIN, self));
+ try!(termios::tcsetattr(STDIN_FILENO, SetArg::TCSADRAIN, self));
Ok(())
}
}
@@ -75,13 +77,17 @@
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
loop {
let res = unsafe {
- libc::read(STDIN_FILENO,
- buf.as_mut_ptr() as *mut libc::c_void,
- buf.len() as libc::size_t)
+ libc::read(
+ STDIN_FILENO,
+ buf.as_mut_ptr() as *mut libc::c_void,
+ buf.len() as libc::size_t,
+ )
};
if res == -1 {
let error = io::Error::last_os_error();
- if error.kind() != io::ErrorKind::Interrupted {
+ if error.kind() != io::ErrorKind::Interrupted
+ || SIGWINCH.load(atomic::Ordering::Relaxed)
+ {
return Err(error);
}
} else {
@@ -93,110 +99,203 @@
/// Console input reader
pub struct PosixRawReader {
- chars: char_iter::Chars<StdinRaw>,
+ stdin: StdinRaw,
timeout_ms: i32,
+ buf: [u8; 4],
}
impl PosixRawReader {
- pub fn new(config: &Config) -> Result<PosixRawReader> {
- let stdin = StdinRaw {};
+ fn new(config: &Config) -> Result<PosixRawReader> {
Ok(PosixRawReader {
- chars: char_iter::chars(stdin),
- timeout_ms: config.keyseq_timeout(),
- })
+ stdin: StdinRaw {},
+ timeout_ms: config.keyseq_timeout(),
+ buf: [0; 4],
+ })
}
fn escape_sequence(&mut self) -> Result<KeyPress> {
// Read the next two bytes representing the escape sequence.
let seq1 = try!(self.next_char());
if seq1 == '[' {
- // ESC [ sequences.
+ // ESC [ sequences. (CSI)
let seq2 = try!(self.next_char());
if seq2.is_digit(10) {
// Extended escape, read additional byte.
let seq3 = try!(self.next_char());
if seq3 == '~' {
Ok(match seq2 {
- '1' | '7' => KeyPress::Home, // '1': xterm
- '3' => KeyPress::Delete,
- '4' | '8' => KeyPress::End, // '4': xterm
- '5' => KeyPress::PageUp,
- '6' => KeyPress::PageDown,
- _ => {
- debug!(target: "rustyline", "unsupported esc sequence: ESC{:?}{:?}{:?}", seq1, seq2, seq3);
- KeyPress::UnknownEscSeq
+ '1' | '7' => KeyPress::Home, // tmux, xrvt
+ '2' => KeyPress::Insert,
+ '3' => KeyPress::Delete, // kdch1
+ '4' | '8' => KeyPress::End, // tmux, xrvt
+ '5' => KeyPress::PageUp, // kpp
+ '6' => KeyPress::PageDown, // knp
+ _ => {
+ debug!(target: "rustyline",
+ "unsupported esc sequence: ESC [ {} ~", seq2);
+ KeyPress::UnknownEscSeq
+ }
+ })
+ } else if seq3.is_digit(10) {
+ let seq4 = try!(self.next_char());
+ if seq4 == '~' {
+ Ok(match (seq2, seq3) {
+ ('1', '1') => KeyPress::F(1), // rxvt-unicode
+ ('1', '2') => KeyPress::F(2), // rxvt-unicode
+ ('1', '3') => KeyPress::F(3), // rxvt-unicode
+ ('1', '4') => KeyPress::F(4), // rxvt-unicode
+ ('1', '5') => KeyPress::F(5), // kf5
+ ('1', '7') => KeyPress::F(6), // kf6
+ ('1', '8') => KeyPress::F(7), // kf7
+ ('1', '9') => KeyPress::F(8), // kf8
+ ('2', '0') => KeyPress::F(9), // kf9
+ ('2', '1') => KeyPress::F(10), // kf10
+ ('2', '3') => KeyPress::F(11), // kf11
+ ('2', '4') => KeyPress::F(12), // kf12
+ _ => {
+ debug!(target: "rustyline",
+ "unsupported esc sequence: ESC [ {}{} ~", seq1, seq2);
+ KeyPress::UnknownEscSeq
+ }
+ })
+ } else if seq4 == ';' {
+ let seq5 = try!(self.next_char());
+ if seq5.is_digit(10) {
+ let seq6 = try!(self.next_char()); // '~' expected
+ debug!(target: "rustyline",
+ "unsupported esc sequence: ESC [ {}{} ; {} {}", seq2, seq3, seq5, seq6);
+ } else {
+ debug!(target: "rustyline",
+ "unsupported esc sequence: ESC [ {}{} ; {:?}", seq2, seq3, seq5);
+ }
+ Ok(KeyPress::UnknownEscSeq)
+ } else {
+ debug!(target: "rustyline",
+ "unsupported esc sequence: ESC [ {}{} {:?}", seq2, seq3, seq4);
+ Ok(KeyPress::UnknownEscSeq)
}
- })
+ } else if seq3 == ';' {
+ let seq4 = try!(self.next_char());
+ if seq4.is_digit(10) {
+ let seq5 = try!(self.next_char());
+ if seq2 == '1' {
+ Ok(match (seq4, seq5) {
+ ('5', 'A') => KeyPress::ControlUp,
+ ('5', 'B') => KeyPress::ControlDown,
+ ('5', 'C') => KeyPress::ControlRight,
+ ('5', 'D') => KeyPress::ControlLeft,
+ ('2', 'A') => KeyPress::ShiftUp,
+ ('2', 'B') => KeyPress::ShiftDown,
+ ('2', 'C') => KeyPress::ShiftRight,
+ ('2', 'D') => KeyPress::ShiftLeft,
+ _ => {
+ debug!(target: "rustyline",
+ "unsupported esc sequence: ESC [ {} ; {} {}", seq2, seq4, seq5);
+ KeyPress::UnknownEscSeq
+ }
+ })
+ } else {
+ debug!(target: "rustyline",
+ "unsupported esc sequence: ESC [ {} ; {} {}", seq2, seq4, seq5);
+ Ok(KeyPress::UnknownEscSeq)
+ }
+ } else {
+ debug!(target: "rustyline",
+ "unsupported esc sequence: ESC [ {} ; {:?}", seq2, seq4);
+ Ok(KeyPress::UnknownEscSeq)
+ }
} else {
- debug!(target: "rustyline", "unsupported esc sequence: ESC{:?}{:?}{:?}", seq1, seq2, seq3);
- Ok(KeyPress::UnknownEscSeq)
+ Ok(match (seq2, seq3) {
+ ('5', 'A') => KeyPress::ControlUp,
+ ('5', 'B') => KeyPress::ControlDown,
+ ('5', 'C') => KeyPress::ControlRight,
+ ('5', 'D') => KeyPress::ControlLeft,
+ _ => {
+ debug!(target: "rustyline",
+ "unsupported esc sequence: ESC [ {} {:?}", seq2, seq3);
+ KeyPress::UnknownEscSeq
+ }
+ })
}
} else {
+ // ANSI
Ok(match seq2 {
- 'A' => KeyPress::Up, // ANSI
- 'B' => KeyPress::Down,
- 'C' => KeyPress::Right,
- 'D' => KeyPress::Left,
- 'F' => KeyPress::End,
- 'H' => KeyPress::Home,
- _ => {
- debug!(target: "rustyline", "unsupported esc sequence: ESC{:?}{:?}", seq1, seq2);
- KeyPress::UnknownEscSeq
- }
- })
+ 'A' => KeyPress::Up, // kcuu1
+ 'B' => KeyPress::Down, // kcud1
+ 'C' => KeyPress::Right, // kcuf1
+ 'D' => KeyPress::Left, // kcub1
+ 'F' => KeyPress::End,
+ 'H' => KeyPress::Home, // khome
+ _ => {
+ debug!(target: "rustyline", "unsupported esc sequence: ESC [ {:?}", seq2);
+ KeyPress::UnknownEscSeq
+ }
+ })
}
} else if seq1 == 'O' {
- // ESC O sequences.
+ // xterm
+ // ESC O sequences. (SS3)
let seq2 = try!(self.next_char());
Ok(match seq2 {
- 'A' => KeyPress::Up,
- 'B' => KeyPress::Down,
- 'C' => KeyPress::Right,
- 'D' => KeyPress::Left,
- 'F' => KeyPress::End,
- 'H' => KeyPress::Home,
- _ => {
- debug!(target: "rustyline", "unsupported esc sequence: ESC{:?}{:?}", seq1, seq2);
- KeyPress::UnknownEscSeq
- }
- })
+ 'A' => KeyPress::Up, // kcuu1
+ 'B' => KeyPress::Down, // kcud1
+ 'C' => KeyPress::Right, // kcuf1
+ 'D' => KeyPress::Left, // kcub1
+ 'F' => KeyPress::End, // kend
+ 'H' => KeyPress::Home, // khome
+ 'P' => KeyPress::F(1), // kf1
+ 'Q' => KeyPress::F(2), // kf2
+ 'R' => KeyPress::F(3), // kf3
+ 'S' => KeyPress::F(4), // kf4
+ _ => {
+ debug!(target: "rustyline", "unsupported esc sequence: ESC O {:?}", seq2);
+ KeyPress::UnknownEscSeq
+ }
+ })
+ } else if seq1 == '\x1b' {
+ // ESC ESC
+ Ok(KeyPress::Esc)
} else {
// TODO ESC-R (r): Undo all changes made to this line.
- Ok(match seq1 {
- '\x08' => KeyPress::Meta('\x08'), // Backspace
- '-' => KeyPress::Meta('-'),
- '0'...'9' => KeyPress::Meta(seq1),
- '<' => KeyPress::Meta('<'),
- '>' => KeyPress::Meta('>'),
- 'b' | 'B' => KeyPress::Meta('B'),
- 'c' | 'C' => KeyPress::Meta('C'),
- 'd' | 'D' => KeyPress::Meta('D'),
- 'f' | 'F' => KeyPress::Meta('F'),
- 'l' | 'L' => KeyPress::Meta('L'),
- 'n' | 'N' => KeyPress::Meta('N'),
- 'p' | 'P' => KeyPress::Meta('P'),
- 't' | 'T' => KeyPress::Meta('T'),
- 'u' | 'U' => KeyPress::Meta('U'),
- 'y' | 'Y' => KeyPress::Meta('Y'),
- '\x7f' => KeyPress::Meta('\x7f'), // Delete
- _ => {
- debug!(target: "rustyline", "unsupported esc sequence: M-{:?}", seq1);
- KeyPress::UnknownEscSeq
- }
- })
+ Ok(KeyPress::Meta(seq1))
}
}
}
+// https://tools.ietf.org/html/rfc3629
+#[cfg_attr(rustfmt, rustfmt_skip)]
+static UTF8_CHAR_WIDTH: [u8; 256] = [
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x1F
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x3F
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x5F
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
+1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, // 0x7F
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0x9F
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, // 0xBF
+0,0,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
+2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, // 0xDF
+3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, // 0xEF
+4,4,4,4,4,0,0,0,0,0,0,0,0,0,0,0, // 0xFF
+];
+
impl RawReader for PosixRawReader {
- fn next_key(&mut self) -> Result<KeyPress> {
+ fn next_key(&mut self, single_esc_abort: bool) -> Result<KeyPress> {
let c = try!(self.next_char());
let mut key = consts::char_to_key_press(c);
if key == KeyPress::Esc {
- let mut fds =
- [poll::PollFd::new(STDIN_FILENO, poll::POLLIN, poll::EventFlags::empty())];
- match poll::poll(&mut fds, self.timeout_ms) {
+ let timeout_ms = if single_esc_abort && self.timeout_ms == -1 {
+ 0
+ } else {
+ self.timeout_ms
+ };
+ let mut fds = [poll::PollFd::new(STDIN_FILENO, EventFlags::POLLIN)];
+ match poll::poll(&mut fds, timeout_ms) {
Ok(n) if n == 0 => {
// single escape
}
@@ -213,22 +312,212 @@
}
fn next_char(&mut self) -> Result<char> {
- match self.chars.next() {
- Some(c) => Ok(try!(c)),
- None => Err(error::ReadlineError::Eof),
+ let n = try!(self.stdin.read(&mut self.buf[..1]));
+ if n == 0 {
+ return Err(error::ReadlineError::Eof);
+ }
+ let first = self.buf[0];
+ if first >= 128 {
+ let width = UTF8_CHAR_WIDTH[first as usize] as usize;
+ if width == 0 {
+ try!(std::str::from_utf8(&self.buf[..1]));
+ unreachable!()
+ }
+ try!(self.stdin.read_exact(&mut self.buf[1..width]));
+ let s = try!(std::str::from_utf8(&self.buf[..width]));
+ Ok(s.chars().next().unwrap())
+ } else {
+ Ok(first as char)
}
}
}
+/// Console output writer
+pub struct PosixRenderer {
+ out: Stdout,
+ cols: usize, // Number of columns in terminal
+}
+
+impl PosixRenderer {
+ fn new() -> PosixRenderer {
+ let (cols, _) = get_win_size();
+ PosixRenderer {
+ out: io::stdout(),
+ cols,
+ }
+ }
+}
+
+impl Renderer for PosixRenderer {
+ fn move_cursor(&mut self, old: Position, new: Position) -> Result<()> {
+ use std::fmt::Write;
+ let mut ab = String::new();
+ if new.row > old.row {
+ // move down
+ let row_shift = new.row - old.row;
+ if row_shift == 1 {
+ ab.push_str("\x1b[B");
+ } else {
+ write!(ab, "\x1b[{}B", row_shift).unwrap();
+ }
+ } else if new.row < old.row {
+ // move up
+ let row_shift = old.row - new.row;
+ if row_shift == 1 {
+ ab.push_str("\x1b[A");
+ } else {
+ write!(ab, "\x1b[{}A", row_shift).unwrap();
+ }
+ }
+ if new.col > old.col {
+ // move right
+ let col_shift = new.col - old.col;
+ if col_shift == 1 {
+ ab.push_str("\x1b[C");
+ } else {
+ write!(ab, "\x1b[{}C", col_shift).unwrap();
+ }
+ } else if new.col < old.col {
+ // move left
+ let col_shift = old.col - new.col;
+ if col_shift == 1 {
+ ab.push_str("\x1b[D");
+ } else {
+ write!(ab, "\x1b[{}D", col_shift).unwrap();
+ }
+ }
+ self.write_and_flush(ab.as_bytes())
+ }
+
+ fn refresh_line(
+ &mut self,
+ prompt: &str,
+ prompt_size: Position,
+ line: &LineBuffer,
+ hint: Option<String>,
+ current_row: usize,
+ old_rows: usize,
+ ) -> Result<(Position, Position)> {
+ use std::fmt::Write;
+ let mut ab = String::new();
+
+ // calculate the position of the end of the input line
+ let end_pos = self.calculate_position(line, prompt_size);
+ // calculate the desired position of the cursor
+ let cursor = self.calculate_position(&line[..line.pos()], prompt_size);
+
+ // self.old_rows < self.cursor.row if the prompt spans multiple lines and if
+ // this is the default State.
+ let cursor_row_movement = old_rows.checked_sub(current_row).unwrap_or(0);
+ // move the cursor down as required
+ if cursor_row_movement > 0 {
+ write!(ab, "\x1b[{}B", cursor_row_movement).unwrap();
+ }
+ // clear old rows
+ for _ in 0..old_rows {
+ ab.push_str("\r\x1b[0K\x1b[A");
+ }
+ // clear the line
+ ab.push_str("\r\x1b[0K");
+
+ // display the prompt
+ ab.push_str(prompt);
+ // display the input line
+ ab.push_str(line);
+ // display hint
+ if let Some(hint) = hint {
+ ab.push_str(truncate(&hint, end_pos.col, self.cols));
+ }
+ // we have to generate our own newline on line wrap
+ if end_pos.col == 0 && end_pos.row > 0 {
+ ab.push_str("\n");
+ }
+ // position the cursor
+ let cursor_row_movement = end_pos.row - cursor.row;
+ // move the cursor up as required
+ if cursor_row_movement > 0 {
+ write!(ab, "\x1b[{}A", cursor_row_movement).unwrap();
+ }
+ // position the cursor within the line
+ if cursor.col > 0 {
+ write!(ab, "\r\x1b[{}C", cursor.col).unwrap();
+ } else {
+ ab.push('\r');
+ }
+
+ try!(self.write_and_flush(ab.as_bytes()));
+ Ok((cursor, end_pos))
+ }
+
+ fn write_and_flush(&mut self, buf: &[u8]) -> Result<()> {
+ try!(self.out.write_all(buf));
+ try!(self.out.flush());
+ Ok(())
+ }
+
+ /// Control characters are treated as having zero width.
+ /// Characters with 2 column width are correctly handled (not splitted).
+ #[allow(if_same_then_else)]
+ fn calculate_position(&self, s: &str, orig: Position) -> Position {
+ let mut pos = orig;
+ let mut esc_seq = 0;
+ for c in s.graphemes(true) {
+ if c == "\n" {
+ pos.row += 1;
+ pos.col = 0;
+ continue;
+ }
+ let cw = width(c, &mut esc_seq);
+ pos.col += cw;
+ if pos.col > self.cols {
+ pos.row += 1;
+ pos.col = cw;
+ }
+ }
+ if pos.col == self.cols {
+ pos.col = 0;
+ pos.row += 1;
+ }
+ pos
+ }
+
+ /// Clear the screen. Used to handle ctrl+l
+ fn clear_screen(&mut self) -> Result<()> {
+ self.write_and_flush(b"\x1b[H\x1b[2J")
+ }
+
+ /// Check if a SIGWINCH signal has been received
+ fn sigwinch(&self) -> bool {
+ SIGWINCH.compare_and_swap(true, false, atomic::Ordering::SeqCst)
+ }
+
+ /// Try to update the number of columns in the current terminal,
+ fn update_size(&mut self) {
+ let (cols, _) = get_win_size();
+ self.cols = cols;
+ }
+
+ fn get_columns(&self) -> usize {
+ self.cols
+ }
+ /// Try to get the number of rows in the current terminal,
+ /// or assume 24 if it fails.
+ fn get_rows(&self) -> usize {
+ let (_, rows) = get_win_size();
+ rows
+ }
+}
static SIGWINCH_ONCE: sync::Once = sync::ONCE_INIT;
static SIGWINCH: atomic::AtomicBool = atomic::ATOMIC_BOOL_INIT;
fn install_sigwinch_handler() {
SIGWINCH_ONCE.call_once(|| unsafe {
- let sigwinch = signal::SigAction::new(signal::SigHandler::Handler(sigwinch_handler),
- signal::SaFlags::empty(),
- signal::SigSet::empty());
+ let sigwinch = signal::SigAction::new(
+ signal::SigHandler::Handler(sigwinch_handler),
+ signal::SaFlags::empty(),
+ signal::SigSet::empty(),
+ );
let _ = signal::sigaction(signal::SIGWINCH, &sigwinch);
});
}
@@ -240,7 +529,7 @@
pub type Terminal = PosixTerminal;
-#[derive(Clone,Debug)]
+#[derive(Clone, Debug)]
pub struct PosixTerminal {
unsupported: bool,
stdin_isatty: bool,
@@ -248,7 +537,7 @@
impl Term for PosixTerminal {
type Reader = PosixRawReader;
- type Writer = Stdout;
+ type Writer = PosixRenderer;
type Mode = Mode;
fn new() -> PosixTerminal {
@@ -264,7 +553,8 @@
// Init checks:
- /// Check if current terminal can provide a rich line-editing user interface.
+ /// Check if current terminal can provide a rich line-editing user
+ /// interface.
fn is_unsupported(&self) -> bool {
self.unsupported
}
@@ -276,40 +566,32 @@
// Interactive loop:
- /// Try to get the number of columns in the current terminal,
- /// or assume 80 if it fails.
- fn get_columns(&self) -> usize {
- let (cols, _) = get_win_size();
- cols
- }
-
- /// Try to get the number of rows in the current terminal,
- /// or assume 24 if it fails.
- fn get_rows(&self) -> usize {
- let (_, rows) = get_win_size();
- rows
- }
-
fn enable_raw_mode(&self) -> Result<Mode> {
use nix::errno::Errno::ENOTTY;
- use nix::sys::termios::{BRKINT, CS8, ECHO, ICANON, ICRNL, IEXTEN, INPCK, ISIG, ISTRIP,
- IXON, /* OPOST, */ VMIN, VTIME};
+ use nix::sys::termios::{ControlFlags, InputFlags, LocalFlags, SpecialCharacterIndices};
if !self.stdin_isatty {
try!(Err(nix::Error::from_errno(ENOTTY)));
}
let original_mode = try!(termios::tcgetattr(STDIN_FILENO));
- let mut raw = original_mode;
+ let mut raw = original_mode.clone();
// disable BREAK interrupt, CR to NL conversion on input,
// input parity check, strip high bit (bit 8), output flow control
- raw.c_iflag &= !(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
+ raw.input_flags &= !(InputFlags::BRKINT
+ | InputFlags::ICRNL
+ | InputFlags::INPCK
+ | InputFlags::ISTRIP
+ | InputFlags::IXON);
// we don't want raw output, it turns newlines into straight linefeeds
- // raw.c_oflag = raw.c_oflag & !(OPOST); // disable all output processing
- raw.c_cflag |= CS8; // character-size mark (8 bits)
+ // raw.c_oflag = raw.c_oflag & !(OutputFlags::OPOST); // disable all output
+ // processing
+ // character-size mark (8 bits)
+ raw.control_flags |= ControlFlags::CS8;
// disable echoing, canonical mode, extended input processing and signals
- raw.c_lflag &= !(ECHO | ICANON | IEXTEN | ISIG);
- raw.c_cc[VMIN] = 1; // One character-at-a-time input
- raw.c_cc[VTIME] = 0; // with blocking read
- try!(termios::tcsetattr(STDIN_FILENO, termios::TCSADRAIN, &raw));
+ raw.local_flags &=
+ !(LocalFlags::ECHO | LocalFlags::ICANON | LocalFlags::IEXTEN | LocalFlags::ISIG);
+ raw.control_chars[SpecialCharacterIndices::VMIN as usize] = 1; // One character-at-a-time input
+ raw.control_chars[SpecialCharacterIndices::VTIME as usize] = 0; // with blocking read
+ try!(termios::tcsetattr(STDIN_FILENO, SetArg::TCSADRAIN, &raw));
Ok(original_mode)
}
@@ -318,33 +600,32 @@
PosixRawReader::new(config)
}
- fn create_writer(&self) -> Stdout {
- io::stdout()
- }
-
- /// Check if a SIGWINCH signal has been received
- fn sigwinch(&self) -> bool {
- SIGWINCH.compare_and_swap(true, false, atomic::Ordering::SeqCst)
- }
-
- /// Clear the screen. Used to handle ctrl+l
- fn clear_screen(&mut self, w: &mut Write) -> Result<()> {
- try!(w.write_all(b"\x1b[H\x1b[2J"));
- try!(w.flush());
- Ok(())
+ fn create_writer(&self) -> PosixRenderer {
+ PosixRenderer::new()
}
}
#[cfg(unix)]
pub fn suspend() -> Result<()> {
- // For macos:
- try!(signal::kill(nix::unistd::getppid(), signal::SIGTSTP));
- try!(signal::kill(nix::unistd::getpid(), signal::SIGTSTP));
+ use nix::unistd::Pid;
+ // suspend the whole process group
+ try!(signal::kill(Pid::from_raw(0), signal::SIGTSTP));
Ok(())
}
-#[cfg(all(unix,test))]
+#[cfg(all(unix, test))]
mod test {
+ use super::{Position, Renderer};
+ use std::io::{self, Stdout};
+
+ #[test]
+ fn prompt_with_ansi_escape_codes() {
+ let out = io::stdout();
+ let pos = out.calculate_position("\x1b[1;32m>>\x1b[0m ", Position::default(), 80);
+ assert_eq!(3, pos.col);
+ assert_eq!(0, pos.row);
+ }
+
#[test]
fn test_unsupported_term() {
::std::env::set_var("TERM", "xterm");
diff --git a/src/tty/windows.rs b/src/tty/windows.rs
index 7b73e2f..6d9fa36 100644
--- a/src/tty/windows.rs
+++ b/src/tty/windows.rs
@@ -3,167 +3,219 @@
use std::mem;
use std::sync::atomic;
-use kernel32;
-use winapi;
+use unicode_width::UnicodeWidthChar;
+use winapi::shared::minwindef::{DWORD, WORD};
+use winapi::um::winnt::{CHAR, HANDLE};
+use winapi::um::{consoleapi, handleapi, processenv, winbase, wincon, winuser};
+use super::{truncate, Position, RawMode, RawReader, Renderer, Term};
use config::Config;
use consts::{self, KeyPress};
use error;
+use line_buffer::LineBuffer;
use Result;
-use super::{RawMode, RawReader, Term};
-const STDIN_FILENO: winapi::DWORD = winapi::STD_INPUT_HANDLE;
-const STDOUT_FILENO: winapi::DWORD = winapi::STD_OUTPUT_HANDLE;
+const STDIN_FILENO: DWORD = winbase::STD_INPUT_HANDLE;
+const STDOUT_FILENO: DWORD = winbase::STD_OUTPUT_HANDLE;
-fn get_std_handle(fd: winapi::DWORD) -> Result<winapi::HANDLE> {
- let handle = unsafe { kernel32::GetStdHandle(fd) };
- if handle == winapi::INVALID_HANDLE_VALUE {
+fn get_std_handle(fd: DWORD) -> Result<HANDLE> {
+ let handle = unsafe { processenv::GetStdHandle(fd) };
+ if handle == handleapi::INVALID_HANDLE_VALUE {
try!(Err(io::Error::last_os_error()));
} else if handle.is_null() {
- try!(Err(io::Error::new(io::ErrorKind::Other,
- "no stdio handle available for this process")));
+ try!(Err(io::Error::new(
+ io::ErrorKind::Other,
+ "no stdio handle available for this process",
+ ),));
}
Ok(handle)
}
#[macro_export]
macro_rules! check {
- ($funcall:expr) => {
- {
+ ($funcall:expr) => {{
let rc = unsafe { $funcall };
if rc == 0 {
try!(Err(io::Error::last_os_error()));
}
rc
- }
- };
+ }};
}
-fn get_win_size(handle: winapi::HANDLE) -> (usize, usize) {
+fn get_win_size(handle: HANDLE) -> (usize, usize) {
let mut info = unsafe { mem::zeroed() };
- match unsafe { kernel32::GetConsoleScreenBufferInfo(handle, &mut info) } {
+ match unsafe { wincon::GetConsoleScreenBufferInfo(handle, &mut info) } {
0 => (80, 24),
- _ => (info.dwSize.X as usize, (1 + info.srWindow.Bottom - info.srWindow.Top) as usize),
+ _ => (
+ info.dwSize.X as usize,
+ (1 + info.srWindow.Bottom - info.srWindow.Top) as usize,
+ ), // (info.srWindow.Right - info.srWindow.Left + 1)
}
}
-fn get_console_mode(handle: winapi::HANDLE) -> Result<winapi::DWORD> {
+fn get_console_mode(handle: HANDLE) -> Result<DWORD> {
let mut original_mode = 0;
- check!(kernel32::GetConsoleMode(handle, &mut original_mode));
+ check!(consoleapi::GetConsoleMode(handle, &mut original_mode));
Ok(original_mode)
}
pub type Mode = ConsoleMode;
-#[derive(Clone,Copy,Debug)]
+#[derive(Clone, Copy, Debug)]
pub struct ConsoleMode {
- original_mode: winapi::DWORD,
- stdin_handle: winapi::HANDLE,
+ original_stdin_mode: DWORD,
+ stdin_handle: HANDLE,
+ original_stdout_mode: DWORD,
+ stdout_handle: HANDLE,
}
impl RawMode for Mode {
/// Disable RAW mode for the terminal.
fn disable_raw_mode(&self) -> Result<()> {
- check!(kernel32::SetConsoleMode(self.stdin_handle, self.original_mode));
+ check!(consoleapi::SetConsoleMode(
+ self.stdin_handle,
+ self.original_stdin_mode,
+ ));
+ check!(consoleapi::SetConsoleMode(
+ self.stdout_handle,
+ self.original_stdout_mode,
+ ));
Ok(())
}
}
/// Console input reader
pub struct ConsoleRawReader {
- handle: winapi::HANDLE,
- buf: Option<u16>,
+ handle: HANDLE,
+ buf: [u16; 2],
}
impl ConsoleRawReader {
pub fn new() -> Result<ConsoleRawReader> {
let handle = try!(get_std_handle(STDIN_FILENO));
Ok(ConsoleRawReader {
- handle: handle,
- buf: None,
- })
+ handle,
+ buf: [0; 2],
+ })
}
}
impl RawReader for ConsoleRawReader {
- fn next_key(&mut self) -> Result<KeyPress> {
+ fn next_key(&mut self, _: bool) -> Result<KeyPress> {
use std::char::decode_utf16;
- // use winapi::{LEFT_ALT_PRESSED, LEFT_CTRL_PRESSED, RIGHT_ALT_PRESSED, RIGHT_CTRL_PRESSED};
- use winapi::{LEFT_ALT_PRESSED, RIGHT_ALT_PRESSED};
+ use winapi::um::wincon::{
+ LEFT_ALT_PRESSED, LEFT_CTRL_PRESSED, RIGHT_ALT_PRESSED, RIGHT_CTRL_PRESSED,
+ };
- let mut rec: winapi::INPUT_RECORD = unsafe { mem::zeroed() };
+ let mut rec: wincon::INPUT_RECORD = unsafe { mem::zeroed() };
let mut count = 0;
+ let mut surrogate = false;
loop {
// TODO GetNumberOfConsoleInputEvents
- check!(kernel32::ReadConsoleInputW(self.handle,
- &mut rec,
- 1 as winapi::DWORD,
- &mut count));
+ check!(consoleapi::ReadConsoleInputW(
+ self.handle,
+ &mut rec,
+ 1 as DWORD,
+ &mut count,
+ ));
- if rec.EventType == winapi::WINDOW_BUFFER_SIZE_EVENT {
+ if rec.EventType == wincon::WINDOW_BUFFER_SIZE_EVENT {
SIGWINCH.store(true, atomic::Ordering::SeqCst);
debug!(target: "rustyline", "SIGWINCH");
return Err(error::ReadlineError::WindowResize);
- } else if rec.EventType != winapi::KEY_EVENT {
+ } else if rec.EventType != wincon::KEY_EVENT {
continue;
}
- let key_event = unsafe { rec.KeyEvent() };
+ let key_event = unsafe { rec.Event.KeyEvent() };
// writeln!(io::stderr(), "key_event: {:?}", key_event).unwrap();
- if key_event.bKeyDown == 0 &&
- key_event.wVirtualKeyCode != winapi::VK_MENU as winapi::WORD {
+ if key_event.bKeyDown == 0 && key_event.wVirtualKeyCode != winuser::VK_MENU as WORD {
continue;
}
+ // key_event.wRepeatCount seems to be always set to 1 (maybe because we only
+ // read one character at a time)
- // let alt_gr = key_event.dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_ALT_PRESSED) != 0;
+ // let alt_gr = key_event.dwControlKeyState & (LEFT_CTRL_PRESSED |
+ // RIGHT_ALT_PRESSED) != 0;
let alt = key_event.dwControlKeyState & (LEFT_ALT_PRESSED | RIGHT_ALT_PRESSED) != 0;
- // let ctrl = key_event.dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED) != 0;
+ let ctrl = key_event.dwControlKeyState & (LEFT_CTRL_PRESSED | RIGHT_CTRL_PRESSED) != 0;
let meta = alt;
- let utf16 = key_event.UnicodeChar;
+ let utf16 = unsafe { *key_event.uChar.UnicodeChar() };
if utf16 == 0 {
match key_event.wVirtualKeyCode as i32 {
- winapi::VK_LEFT => return Ok(KeyPress::Left),
- winapi::VK_RIGHT => return Ok(KeyPress::Right),
- winapi::VK_UP => return Ok(KeyPress::Up),
- winapi::VK_DOWN => return Ok(KeyPress::Down),
- winapi::VK_DELETE => return Ok(KeyPress::Delete),
- winapi::VK_HOME => return Ok(KeyPress::Home),
- winapi::VK_END => return Ok(KeyPress::End),
- winapi::VK_PRIOR => return Ok(KeyPress::PageUp),
- winapi::VK_NEXT => return Ok(KeyPress::PageDown),
+ winuser::VK_LEFT => {
+ return Ok(if ctrl {
+ KeyPress::ControlLeft
+ } else {
+ KeyPress::Left
+ })
+ }
+ winuser::VK_RIGHT => {
+ return Ok(if ctrl {
+ KeyPress::ControlRight
+ } else {
+ KeyPress::Right
+ })
+ }
+ winuser::VK_UP => {
+ return Ok(if ctrl {
+ KeyPress::ControlUp
+ } else {
+ KeyPress::Up
+ })
+ }
+ winuser::VK_DOWN => {
+ return Ok(if ctrl {
+ KeyPress::ControlDown
+ } else {
+ KeyPress::Down
+ })
+ }
+ winuser::VK_DELETE => return Ok(KeyPress::Delete),
+ winuser::VK_HOME => return Ok(KeyPress::Home),
+ winuser::VK_END => return Ok(KeyPress::End),
+ winuser::VK_PRIOR => return Ok(KeyPress::PageUp),
+ winuser::VK_NEXT => return Ok(KeyPress::PageDown),
+ winuser::VK_INSERT => return Ok(KeyPress::Insert),
+ winuser::VK_F1 => return Ok(KeyPress::F(1)),
+ winuser::VK_F2 => return Ok(KeyPress::F(2)),
+ winuser::VK_F3 => return Ok(KeyPress::F(3)),
+ winuser::VK_F4 => return Ok(KeyPress::F(4)),
+ winuser::VK_F5 => return Ok(KeyPress::F(5)),
+ winuser::VK_F6 => return Ok(KeyPress::F(6)),
+ winuser::VK_F7 => return Ok(KeyPress::F(7)),
+ winuser::VK_F8 => return Ok(KeyPress::F(8)),
+ winuser::VK_F9 => return Ok(KeyPress::F(9)),
+ winuser::VK_F10 => return Ok(KeyPress::F(10)),
+ winuser::VK_F11 => return Ok(KeyPress::F(11)),
+ winuser::VK_F12 => return Ok(KeyPress::F(12)),
+ // winuser::VK_BACK is correctly handled because the key_event.UnicodeChar is
+ // also
+ // set.
_ => continue,
};
} else if utf16 == 27 {
return Ok(KeyPress::Esc);
} else {
- // TODO How to support surrogate pair ?
- self.buf = Some(utf16);
- let orc = decode_utf16(self).next();
+ if utf16 >= 0xD800 && utf16 < 0xDC00 {
+ surrogate = true;
+ self.buf[0] = utf16;
+ continue;
+ }
+ let buf = if surrogate {
+ self.buf[1] = utf16;
+ &self.buf[..]
+ } else {
+ self.buf[0] = utf16;
+ &self.buf[..1]
+ };
+ let orc = decode_utf16(buf.iter().cloned()).next();
if orc.is_none() {
return Err(error::ReadlineError::Eof);
}
let c = try!(orc.unwrap());
if meta {
- return Ok(match c {
- '-' => KeyPress::Meta('-'),
- '0'...'9' => KeyPress::Meta(c),
- '<' => KeyPress::Meta('<'),
- '>' => KeyPress::Meta('>'),
- 'b' | 'B' => KeyPress::Meta('B'),
- 'c' | 'C' => KeyPress::Meta('C'),
- 'd' | 'D' => KeyPress::Meta('D'),
- 'f' | 'F' => KeyPress::Meta('F'),
- 'l' | 'L' => KeyPress::Meta('L'),
- 'n' | 'N' => KeyPress::Meta('N'),
- 'p' | 'P' => KeyPress::Meta('P'),
- 't' | 'T' => KeyPress::Meta('T'),
- 'u' | 'U' => KeyPress::Meta('U'),
- 'y' | 'Y' => KeyPress::Meta('Y'),
- _ => {
- debug!(target: "rustyline", "unsupported esc sequence: M-{:?}", c);
- KeyPress::UnknownEscSeq
- }
- });
+ return Ok(KeyPress::Meta(c));
} else {
return Ok(consts::char_to_key_press(c));
}
@@ -172,13 +224,167 @@
}
}
-impl Iterator for ConsoleRawReader {
- type Item = u16;
+pub struct ConsoleRenderer {
+ out: Stdout,
+ handle: HANDLE,
+ cols: usize, // Number of columns in terminal
+}
- fn next(&mut self) -> Option<u16> {
- let buf = self.buf;
- self.buf = None;
- buf
+impl ConsoleRenderer {
+ fn new(handle: HANDLE) -> ConsoleRenderer {
+ // Multi line editing is enabled by ENABLE_WRAP_AT_EOL_OUTPUT mode
+ let (cols, _) = get_win_size(handle);
+ ConsoleRenderer {
+ out: io::stdout(),
+ handle,
+ cols,
+ }
+ }
+
+ fn get_console_screen_buffer_info(&self) -> Result<wincon::CONSOLE_SCREEN_BUFFER_INFO> {
+ let mut info = unsafe { mem::zeroed() };
+ check!(wincon::GetConsoleScreenBufferInfo(self.handle, &mut info));
+ Ok(info)
+ }
+
+ fn set_console_cursor_position(&mut self, pos: wincon::COORD) -> Result<()> {
+ check!(wincon::SetConsoleCursorPosition(self.handle, pos));
+ Ok(())
+ }
+
+ fn clear(&mut self, length: DWORD, pos: wincon::COORD) -> Result<()> {
+ let mut _count = 0;
+ check!(wincon::FillConsoleOutputCharacterA(
+ self.handle,
+ ' ' as CHAR,
+ length,
+ pos,
+ &mut _count,
+ ));
+ Ok(())
+ }
+}
+
+impl Renderer for ConsoleRenderer {
+ fn move_cursor(&mut self, old: Position, new: Position) -> Result<()> {
+ let mut info = try!(self.get_console_screen_buffer_info());
+ if new.row > old.row {
+ info.dwCursorPosition.Y += (new.row - old.row) as i16;
+ } else {
+ info.dwCursorPosition.Y -= (old.row - new.row) as i16;
+ }
+ if new.col > old.col {
+ info.dwCursorPosition.X += (new.col - old.col) as i16;
+ } else {
+ info.dwCursorPosition.X -= (old.col - new.col) as i16;
+ }
+ self.set_console_cursor_position(info.dwCursorPosition)
+ }
+
+ fn refresh_line(
+ &mut self,
+ prompt: &str,
+ prompt_size: Position,
+ line: &LineBuffer,
+ hint: Option<String>,
+ current_row: usize,
+ old_rows: usize,
+ ) -> Result<(Position, Position)> {
+ // calculate the position of the end of the input line
+ let end_pos = self.calculate_position(line, prompt_size);
+ // calculate the desired position of the cursor
+ let cursor = self.calculate_position(&line[..line.pos()], prompt_size);
+
+ // position at the start of the prompt, clear to end of previous input
+ let mut info = try!(self.get_console_screen_buffer_info());
+ info.dwCursorPosition.X = 0;
+ info.dwCursorPosition.Y -= current_row as i16;
+ try!(self.set_console_cursor_position(info.dwCursorPosition));
+ try!(self.clear(
+ (info.dwSize.X * (old_rows as i16 + 1)) as DWORD,
+ info.dwCursorPosition,
+ ));
+ let mut ab = String::new();
+ // display the prompt
+ // TODO handle ansi escape code (SetConsoleTextAttribute)
+ ab.push_str(prompt);
+ // display the input line
+ ab.push_str(&line);
+ // display hint
+ if let Some(hint) = hint {
+ ab.push_str(truncate(&hint, end_pos.col, self.cols));
+ }
+ try!(self.write_and_flush(ab.as_bytes()));
+
+ // position the cursor
+ let mut info = try!(self.get_console_screen_buffer_info());
+ info.dwCursorPosition.X = cursor.col as i16;
+ info.dwCursorPosition.Y -= (end_pos.row - cursor.row) as i16;
+ try!(self.set_console_cursor_position(info.dwCursorPosition));
+ Ok((cursor, end_pos))
+ }
+
+ fn write_and_flush(&mut self, buf: &[u8]) -> Result<()> {
+ try!(self.out.write_all(buf));
+ try!(self.out.flush());
+ Ok(())
+ }
+
+ /// Characters with 2 column width are correctly handled (not splitted).
+ fn calculate_position(&self, s: &str, orig: Position) -> Position {
+ let mut pos = orig;
+ for c in s.chars() {
+ let cw = if c == '\n' {
+ pos.col = 0;
+ pos.row += 1;
+ None
+ } else {
+ c.width()
+ };
+ if let Some(cw) = cw {
+ pos.col += cw;
+ if pos.col > self.cols {
+ pos.row += 1;
+ pos.col = cw;
+ }
+ }
+ }
+ if pos.col == self.cols {
+ pos.col = 0;
+ pos.row += 1;
+ }
+ pos
+ }
+
+ /// Clear the screen. Used to handle ctrl+l
+ fn clear_screen(&mut self) -> Result<()> {
+ let info = try!(self.get_console_screen_buffer_info());
+ let coord = wincon::COORD { X: 0, Y: 0 };
+ check!(wincon::SetConsoleCursorPosition(self.handle, coord));
+ let n = info.dwSize.X as DWORD * info.dwSize.Y as DWORD;
+ self.clear(n, coord)
+ }
+
+ fn sigwinch(&self) -> bool {
+ SIGWINCH.compare_and_swap(true, false, atomic::Ordering::SeqCst)
+ }
+
+ /// Try to get the number of columns in the current terminal,
+ /// or assume 80 if it fails.
+ fn update_size(&mut self) {
+ let (cols, _) = get_win_size(self.handle);
+ self.cols = cols;
+ }
+
+ fn get_columns(&self) -> usize {
+ self.cols
+ }
+
+ /// Try to get the number of rows in the current terminal,
+ /// or assume 24 if it fails.
+ fn get_rows(&self) -> usize {
+ let (_, rows) = get_win_size(self.handle);
+ rows
}
}
@@ -186,42 +392,18 @@
pub type Terminal = Console;
-#[derive(Clone,Debug)]
+#[derive(Clone, Debug)]
pub struct Console {
stdin_isatty: bool,
- stdin_handle: winapi::HANDLE,
- stdout_handle: winapi::HANDLE,
+ stdin_handle: HANDLE,
+ stdout_handle: HANDLE,
}
-impl Console {
- pub fn get_console_screen_buffer_info(&self) -> Result<winapi::CONSOLE_SCREEN_BUFFER_INFO> {
- let mut info = unsafe { mem::zeroed() };
- check!(kernel32::GetConsoleScreenBufferInfo(self.stdout_handle, &mut info));
- Ok(info)
- }
-
- pub fn set_console_cursor_position(&mut self, pos: winapi::COORD) -> Result<()> {
- check!(kernel32::SetConsoleCursorPosition(self.stdout_handle, pos));
- Ok(())
- }
-
- pub fn fill_console_output_character(&mut self,
- length: winapi::DWORD,
- pos: winapi::COORD)
- -> Result<()> {
- let mut _count = 0;
- check!(kernel32::FillConsoleOutputCharacterA(self.stdout_handle,
- ' ' as winapi::CHAR,
- length,
- pos,
- &mut _count));
- Ok(())
- }
-}
+impl Console {}
impl Term for Console {
type Reader = ConsoleRawReader;
- type Writer = Stdout;
+ type Writer = ConsoleRenderer;
type Mode = Mode;
fn new() -> Console {
@@ -237,9 +419,9 @@
let stdout_handle = get_std_handle(STDOUT_FILENO).unwrap_or(ptr::null_mut());
Console {
- stdin_isatty: stdin_isatty,
+ stdin_isatty,
stdin_handle: stdin_handle.unwrap_or(ptr::null_mut()),
- stdout_handle: stdout_handle,
+ stdout_handle,
}
}
@@ -256,67 +438,48 @@
// See ReadConsoleInputW && WINDOW_BUFFER_SIZE_EVENT
// }
- /// Try to get the number of columns in the current terminal,
- /// or assume 80 if it fails.
- fn get_columns(&self) -> usize {
- let (cols, _) = get_win_size(self.stdout_handle);
- cols
- }
-
- /// Try to get the number of rows in the current terminal,
- /// or assume 24 if it fails.
- fn get_rows(&self) -> usize {
- let (_, rows) = get_win_size(self.stdout_handle);
- rows
- }
-
/// Enable RAW mode for the terminal.
fn enable_raw_mode(&self) -> Result<Mode> {
if !self.stdin_isatty {
- try!(Err(io::Error::new(io::ErrorKind::Other,
- "no stdio handle available for this process")));
+ try!(Err(io::Error::new(
+ io::ErrorKind::Other,
+ "no stdio handle available for this process",
+ ),));
}
- let original_mode = try!(get_console_mode(self.stdin_handle));
+ let original_stdin_mode = try!(get_console_mode(self.stdin_handle));
// Disable these modes
- let raw = original_mode &
- !(winapi::wincon::ENABLE_LINE_INPUT | winapi::wincon::ENABLE_ECHO_INPUT |
- winapi::wincon::ENABLE_PROCESSED_INPUT);
+ let raw = original_stdin_mode
+ & !(wincon::ENABLE_LINE_INPUT
+ | wincon::ENABLE_ECHO_INPUT
+ | wincon::ENABLE_PROCESSED_INPUT);
// Enable these modes
- let raw = raw | winapi::wincon::ENABLE_EXTENDED_FLAGS;
- let raw = raw | winapi::wincon::ENABLE_INSERT_MODE;
- let raw = raw | winapi::wincon::ENABLE_QUICK_EDIT_MODE;
- let raw = raw | winapi::wincon::ENABLE_WINDOW_INPUT;
- check!(kernel32::SetConsoleMode(self.stdin_handle, raw));
+ let raw = raw | wincon::ENABLE_EXTENDED_FLAGS;
+ let raw = raw | wincon::ENABLE_INSERT_MODE;
+ let raw = raw | wincon::ENABLE_QUICK_EDIT_MODE;
+ let raw = raw | wincon::ENABLE_WINDOW_INPUT;
+ check!(consoleapi::SetConsoleMode(self.stdin_handle, raw));
+
+ let original_stdout_mode = try!(get_console_mode(self.stdout_handle));
+ // To enable ANSI colors (Windows 10 only):
+ // https://docs.microsoft.com/en-us/windows/console/setconsolemode
+ if original_stdout_mode & wincon::ENABLE_VIRTUAL_TERMINAL_PROCESSING == 0 {
+ let raw = original_stdout_mode | wincon::ENABLE_VIRTUAL_TERMINAL_PROCESSING;
+ check!(consoleapi::SetConsoleMode(self.stdout_handle, raw));
+ }
+
Ok(Mode {
- original_mode: original_mode,
- stdin_handle: self.stdin_handle,
- })
+ original_stdin_mode,
+ stdin_handle: self.stdin_handle,
+ original_stdout_mode,
+ stdout_handle: self.stdout_handle,
+ })
}
fn create_reader(&self, _: &Config) -> Result<ConsoleRawReader> {
ConsoleRawReader::new()
}
- fn create_writer(&self) -> Stdout {
- io::stdout()
- }
-
- fn sigwinch(&self) -> bool {
- SIGWINCH.compare_and_swap(true, false, atomic::Ordering::SeqCst)
- }
-
- /// Clear the screen. Used to handle ctrl+l
- fn clear_screen(&mut self, _: &mut Write) -> Result<()> {
- let info = try!(self.get_console_screen_buffer_info());
- let coord = winapi::COORD { X: 0, Y: 0 };
- check!(kernel32::SetConsoleCursorPosition(self.stdout_handle, coord));
- let mut _count = 0;
- let n = info.dwSize.X as winapi::DWORD * info.dwSize.Y as winapi::DWORD;
- check!(kernel32::FillConsoleOutputCharacterA(self.stdout_handle,
- ' ' as winapi::CHAR,
- n,
- coord,
- &mut _count));
- Ok(())
+ fn create_writer(&self) -> ConsoleRenderer {
+ ConsoleRenderer::new(self.stdout_handle)
}
}
diff --git a/src/undo.rs b/src/undo.rs
new file mode 100644
index 0000000..84c8f77
--- /dev/null
+++ b/src/undo.rs
@@ -0,0 +1,468 @@
+//! Undo API
+use std::fmt::Debug;
+
+use keymap::RepeatCount;
+use line_buffer::{ChangeListener, DeleteListener, Direction, LineBuffer};
+use unicode_segmentation::UnicodeSegmentation;
+
+enum Change {
+ Begin,
+ End,
+ Insert {
+ idx: usize,
+ text: String,
+ }, // QuotedInsert, SelfInsert, Yank
+ Delete {
+ idx: usize,
+ text: String,
+ }, /* BackwardDeleteChar, BackwardKillWord, DeleteChar,
+ * KillLine, KillWholeLine, KillWord,
+ * UnixLikeDiscard, ViDeleteTo */
+ Replace {
+ idx: usize,
+ old: String,
+ new: String,
+ }, /* CapitalizeWord, Complete, DowncaseWord, Replace, TransposeChars, TransposeWords,
+ * UpcaseWord, YankPop */
+}
+
+impl Change {
+ fn undo(&self, line: &mut LineBuffer) {
+ match *self {
+ Change::Begin | Change::End => {
+ unreachable!();
+ }
+ Change::Insert { idx, ref text } => {
+ line.delete_range(idx..idx + text.len());
+ }
+ Change::Delete { idx, ref text } => {
+ line.insert_str(idx, text);
+ line.set_pos(idx + text.len());
+ }
+ Change::Replace {
+ idx,
+ ref old,
+ ref new,
+ } => {
+ line.replace(idx..idx + new.len(), old);
+ }
+ }
+ }
+
+ #[cfg(test)]
+ fn redo(&self, line: &mut LineBuffer) {
+ match *self {
+ Change::Begin | Change::End => {
+ unreachable!();
+ }
+ Change::Insert { idx, ref text } => {
+ line.insert_str(idx, text);
+ }
+ Change::Delete { idx, ref text } => {
+ line.delete_range(idx..idx + text.len());
+ }
+ Change::Replace {
+ idx,
+ ref old,
+ ref new,
+ } => {
+ line.replace(idx..idx + old.len(), new);
+ }
+ }
+ }
+
+ fn insert_seq(&self, indx: usize) -> bool {
+ if let Change::Insert { idx, ref text } = *self {
+ idx + text.len() == indx
+ } else {
+ false
+ }
+ }
+
+ fn delete_seq(&self, indx: usize, len: usize) -> bool {
+ if let Change::Delete { idx, .. } = *self {
+ // delete or backspace
+ idx == indx || idx == indx + len
+ } else {
+ false
+ }
+ }
+
+ fn replace_seq(&self, indx: usize) -> bool {
+ if let Change::Replace { idx, ref new, .. } = *self {
+ idx + new.len() == indx
+ } else {
+ false
+ }
+ }
+}
+
+pub struct Changeset {
+ undo_group_level: u32,
+ undos: Vec<Change>, // undoable changes
+ redos: Vec<Change>, // undone changes, redoable
+}
+
+impl Changeset {
+ pub fn new() -> Changeset {
+ Changeset {
+ undo_group_level: 0,
+ undos: Vec::new(),
+ redos: Vec::new(),
+ }
+ }
+
+ pub fn begin(&mut self) -> usize {
+ debug!(target: "rustyline", "Changeset::begin");
+ self.redos.clear();
+ let mark = self.undos.len();
+ self.undos.push(Change::Begin);
+ self.undo_group_level += 1;
+ mark
+ }
+
+ pub fn end(&mut self) {
+ debug!(target: "rustyline", "Changeset::end");
+ self.redos.clear();
+ while self.undo_group_level > 0 {
+ self.undo_group_level -= 1;
+ if let Some(&Change::Begin) = self.undos.last() {
+ // emtpy Begin..End
+ self.undos.pop();
+ } else {
+ self.undos.push(Change::End);
+ }
+ }
+ }
+
+ fn insert_char(idx: usize, c: char) -> Change {
+ let mut text = String::new();
+ text.push(c);
+ Change::Insert { idx, text }
+ }
+
+ pub fn insert(&mut self, idx: usize, c: char) {
+ debug!(target: "rustyline", "Changeset::insert({}, {:?})", idx, c);
+ self.redos.clear();
+ if !c.is_alphanumeric() || !self.undos.last().map_or(false, |lc| lc.insert_seq(idx)) {
+ self.undos.push(Self::insert_char(idx, c));
+ return;
+ }
+ // merge consecutive char insertions when char is alphanumeric
+ let mut last_change = self.undos.pop().unwrap();
+ if let Change::Insert { ref mut text, .. } = last_change {
+ text.push(c);
+ } else {
+ unreachable!();
+ }
+ self.undos.push(last_change);
+ }
+
+ pub fn insert_str<S: AsRef<str> + Into<String> + Debug>(&mut self, idx: usize, string: S) {
+ debug!(target: "rustyline", "Changeset::insert_str({}, {:?})", idx, string);
+ self.redos.clear();
+ if string.as_ref().is_empty() {
+ return;
+ }
+ self.undos.push(Change::Insert {
+ idx,
+ text: string.into(),
+ });
+ }
+
+ pub fn delete<S: AsRef<str> + Into<String> + Debug>(&mut self, indx: usize, string: S) {
+ debug!(target: "rustyline", "Changeset::delete({}, {:?})", indx, string);
+ self.redos.clear();
+ if string.as_ref().is_empty() {
+ return;
+ }
+
+ if !Self::single_char(string.as_ref())
+ || !self
+ .undos
+ .last()
+ .map_or(false, |lc| lc.delete_seq(indx, string.as_ref().len()))
+ {
+ self.undos.push(Change::Delete {
+ idx: indx,
+ text: string.into(),
+ });
+ return;
+ }
+ // merge consecutive char deletions when char is alphanumeric
+ let mut last_change = self.undos.pop().unwrap();
+ if let Change::Delete {
+ ref mut idx,
+ ref mut text,
+ } = last_change
+ {
+ if *idx == indx {
+ text.push_str(string.as_ref());
+ } else {
+ text.insert_str(0, string.as_ref());
+ *idx = indx;
+ }
+ } else {
+ unreachable!();
+ }
+ self.undos.push(last_change);
+ }
+
+ fn single_char(s: &str) -> bool {
+ let mut graphemes = s.graphemes(true);
+ graphemes.next().map_or(false, |grapheme| {
+ grapheme.chars().all(|c| c.is_alphanumeric())
+ }) && graphemes.next().is_none()
+ }
+
+ pub fn replace<S: AsRef<str> + Into<String> + Debug>(&mut self, indx: usize, old_: S, new_: S) {
+ debug!(target: "rustyline", "Changeset::replace({}, {:?}, {:?})", indx, old_, new_);
+ self.redos.clear();
+
+ if !self.undos.last().map_or(false, |lc| lc.replace_seq(indx)) {
+ self.undos.push(Change::Replace {
+ idx: indx,
+ old: old_.into(),
+ new: new_.into(),
+ });
+ return;
+ }
+
+ // merge consecutive char replacements
+ let mut last_change = self.undos.pop().unwrap();
+ if let Change::Replace {
+ ref mut old,
+ ref mut new,
+ ..
+ } = last_change
+ {
+ old.push_str(old_.as_ref());
+ new.push_str(new_.as_ref());
+ } else {
+ unreachable!();
+ }
+ self.undos.push(last_change);
+ }
+
+ pub fn undo(&mut self, line: &mut LineBuffer, n: RepeatCount) -> bool {
+ debug!(target: "rustyline", "Changeset::undo");
+ let mut count = 0;
+ let mut waiting_for_begin = 0;
+ let mut undone = false;
+ loop {
+ if let Some(change) = self.undos.pop() {
+ match change {
+ Change::Begin => {
+ waiting_for_begin -= 1;
+ }
+ Change::End => {
+ waiting_for_begin += 1;
+ }
+ _ => {
+ change.undo(line);
+ undone = true;
+ }
+ };
+ self.redos.push(change);
+ } else {
+ break;
+ }
+ if waiting_for_begin <= 0 {
+ count += 1;
+ if count >= n {
+ break;
+ }
+ }
+ }
+ undone
+ }
+
+ pub fn truncate(&mut self, len: usize) {
+ debug!(target: "rustyline", "Changeset::truncate({})", len);
+ self.undos.truncate(len);
+ }
+
+ #[cfg(test)]
+ pub fn redo(&mut self, line: &mut LineBuffer) -> bool {
+ let mut waiting_for_end = 0;
+ let mut redone = false;
+ loop {
+ if let Some(change) = self.redos.pop() {
+ match change {
+ Change::Begin => {
+ waiting_for_end += 1;
+ }
+ Change::End => {
+ waiting_for_end -= 1;
+ }
+ _ => {
+ change.redo(line);
+ redone = true;
+ }
+ };
+ self.undos.push(change);
+ } else {
+ break;
+ }
+ if waiting_for_end <= 0 {
+ break;
+ }
+ }
+ redone
+ }
+
+ pub fn last_insert(&self) -> Option<String> {
+ for change in self.undos.iter().rev() {
+ match change {
+ Change::Insert { ref text, .. } => return Some(text.to_owned()),
+ Change::Replace { ref new, .. } => return Some(new.to_owned()),
+ Change::End => {
+ continue;
+ }
+ _ => {
+ return None;
+ }
+ }
+ }
+ None
+ }
+}
+
+impl DeleteListener for Changeset {
+ fn start_killing(&mut self) {}
+ fn delete(&mut self, idx: usize, string: &str, _: Direction) {
+ self.delete(idx, string);
+ }
+ fn stop_killing(&mut self) {}
+}
+impl ChangeListener for Changeset {
+ fn insert_char(&mut self, idx: usize, c: char) {
+ self.insert(idx, c);
+ }
+ fn insert_str(&mut self, idx: usize, string: &str) {
+ self.insert_str(idx, string);
+ }
+ fn replace(&mut self, idx: usize, old: &str, new: &str) {
+ self.replace(idx, old, new);
+ }
+}
+
+#[cfg(test)]
+mod tests {
+ use super::Changeset;
+ use line_buffer::LineBuffer;
+
+ #[test]
+ fn test_insert_chars() {
+ let mut cs = Changeset::new();
+ cs.insert(0, 'H');
+ cs.insert(1, 'i');
+ assert_eq!(1, cs.undos.len());
+ assert_eq!(0, cs.redos.len());
+ cs.insert(0, ' ');
+ assert_eq!(2, cs.undos.len());
+ }
+
+ #[test]
+ fn test_insert_strings() {
+ let mut cs = Changeset::new();
+ cs.insert_str(0, "Hello");
+ cs.insert_str(5, ", ");
+ assert_eq!(2, cs.undos.len());
+ assert_eq!(0, cs.redos.len());
+ }
+
+ #[test]
+ fn test_undo_insert() {
+ let mut buf = LineBuffer::init("", 0, None);
+ buf.insert_str(0, "Hello");
+ buf.insert_str(5, ", world!");
+ let mut cs = Changeset::new();
+ assert_eq!(buf.as_str(), "Hello, world!");
+
+ cs.insert_str(5, ", world!");
+
+ cs.undo(&mut buf, 1);
+ assert_eq!(0, cs.undos.len());
+ assert_eq!(1, cs.redos.len());
+ assert_eq!(buf.as_str(), "Hello");
+
+ cs.redo(&mut buf);
+ assert_eq!(1, cs.undos.len());
+ assert_eq!(0, cs.redos.len());
+ assert_eq!(buf.as_str(), "Hello, world!");
+ }
+
+ #[test]
+ fn test_undo_delete() {
+ let mut buf = LineBuffer::init("", 0, None);
+ buf.insert_str(0, "Hello");
+ let mut cs = Changeset::new();
+ assert_eq!(buf.as_str(), "Hello");
+
+ cs.delete(5, ", world!");
+
+ cs.undo(&mut buf, 1);
+ assert_eq!(buf.as_str(), "Hello, world!");
+
+ cs.redo(&mut buf);
+ assert_eq!(buf.as_str(), "Hello");
+ }
+
+ #[test]
+ fn test_delete_chars() {
+ let mut buf = LineBuffer::init("", 0, None);
+ buf.insert_str(0, "Hlo");
+
+ let mut cs = Changeset::new();
+ cs.delete(1, "e");
+ cs.delete(1, "l");
+ assert_eq!(1, cs.undos.len());
+
+ cs.undo(&mut buf, 1);
+ assert_eq!(buf.as_str(), "Hello");
+ }
+
+ #[test]
+ fn test_backspace_chars() {
+ let mut buf = LineBuffer::init("", 0, None);
+ buf.insert_str(0, "Hlo");
+
+ let mut cs = Changeset::new();
+ cs.delete(2, "l");
+ cs.delete(1, "e");
+ assert_eq!(1, cs.undos.len());
+
+ cs.undo(&mut buf, 1);
+ assert_eq!(buf.as_str(), "Hello");
+ }
+
+ #[test]
+ fn test_undo_replace() {
+ let mut buf = LineBuffer::init("", 0, None);
+ buf.insert_str(0, "Hello, world!");
+ let mut cs = Changeset::new();
+ assert_eq!(buf.as_str(), "Hello, world!");
+
+ buf.replace(1..5, "i");
+ assert_eq!(buf.as_str(), "Hi, world!");
+ cs.replace(1, "ello", "i");
+
+ cs.undo(&mut buf, 1);
+ assert_eq!(buf.as_str(), "Hello, world!");
+
+ cs.redo(&mut buf);
+ assert_eq!(buf.as_str(), "Hi, world!");
+ }
+
+ #[test]
+ fn test_last_insert() {
+ let mut cs = Changeset::new();
+ cs.begin();
+ cs.delete(0, "Hello");
+ cs.insert_str(0, "Bye");
+ cs.end();
+ let insert = cs.last_insert();
+ assert_eq!(Some("Bye".to_owned()), insert);
+ }
+}
