| // Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| //! A wrapper around LLVM's archive (.a) code |
| |
| use ArchiveRef; |
| |
| use std::ffi::CString; |
| use std::marker; |
| use std::path::Path; |
| use std::slice; |
| use std::str; |
| |
| pub struct ArchiveRO { ptr: ArchiveRef } |
| |
| pub struct Iter<'a> { |
| archive: &'a ArchiveRO, |
| ptr: ::ArchiveIteratorRef, |
| } |
| |
| pub struct Child<'a> { |
| ptr: ::ArchiveChildRef, |
| _data: marker::PhantomData<&'a ArchiveRO>, |
| } |
| |
| impl ArchiveRO { |
| /// Opens a static archive for read-only purposes. This is more optimized |
| /// than the `open` method because it uses LLVM's internal `Archive` class |
| /// rather than shelling out to `ar` for everything. |
| /// |
| /// If this archive is used with a mutable method, then an error will be |
| /// raised. |
| pub fn open(dst: &Path) -> Option<ArchiveRO> { |
| return unsafe { |
| let s = path2cstr(dst); |
| let ar = ::LLVMRustOpenArchive(s.as_ptr()); |
| if ar.is_null() { |
| None |
| } else { |
| Some(ArchiveRO { ptr: ar }) |
| } |
| }; |
| |
| #[cfg(unix)] |
| fn path2cstr(p: &Path) -> CString { |
| use std::os::unix::prelude::*; |
| use std::ffi::OsStr; |
| let p: &OsStr = p.as_ref(); |
| CString::new(p.as_bytes()).unwrap() |
| } |
| #[cfg(windows)] |
| fn path2cstr(p: &Path) -> CString { |
| CString::new(p.to_str().unwrap()).unwrap() |
| } |
| } |
| |
| pub fn raw(&self) -> ArchiveRef { self.ptr } |
| |
| pub fn iter(&self) -> Iter { |
| unsafe { |
| Iter { ptr: ::LLVMRustArchiveIteratorNew(self.ptr), archive: self } |
| } |
| } |
| } |
| |
| impl Drop for ArchiveRO { |
| fn drop(&mut self) { |
| unsafe { |
| ::LLVMRustDestroyArchive(self.ptr); |
| } |
| } |
| } |
| |
| impl<'a> Iterator for Iter<'a> { |
| type Item = Child<'a>; |
| |
| fn next(&mut self) -> Option<Child<'a>> { |
| let ptr = unsafe { ::LLVMRustArchiveIteratorNext(self.ptr) }; |
| if ptr.is_null() { |
| None |
| } else { |
| Some(Child { ptr: ptr, _data: marker::PhantomData }) |
| } |
| } |
| } |
| |
| impl<'a> Drop for Iter<'a> { |
| fn drop(&mut self) { |
| unsafe { |
| ::LLVMRustArchiveIteratorFree(self.ptr); |
| } |
| } |
| } |
| |
| impl<'a> Child<'a> { |
| pub fn name(&self) -> Option<&'a str> { |
| unsafe { |
| let mut name_len = 0; |
| let name_ptr = ::LLVMRustArchiveChildName(self.ptr, &mut name_len); |
| if name_ptr.is_null() { |
| None |
| } else { |
| let name = slice::from_raw_parts(name_ptr as *const u8, |
| name_len as usize); |
| str::from_utf8(name).ok().map(|s| s.trim()) |
| } |
| } |
| } |
| |
| pub fn data(&self) -> &'a [u8] { |
| unsafe { |
| let mut data_len = 0; |
| let data_ptr = ::LLVMRustArchiveChildData(self.ptr, &mut data_len); |
| if data_ptr.is_null() { |
| panic!("failed to read data from archive child"); |
| } |
| slice::from_raw_parts(data_ptr as *const u8, data_len as usize) |
| } |
| } |
| |
| pub fn raw(&self) -> ::ArchiveChildRef { self.ptr } |
| } |
| |
| impl<'a> Drop for Child<'a> { |
| fn drop(&mut self) { |
| unsafe { ::LLVMRustArchiveChildFree(self.ptr); } |
| } |
| } |