| #![allow(dead_code)] // runtime init functions not used during testing |
| use crate::ffi::OsString; |
| use crate::marker::PhantomData; |
| use crate::vec; |
| |
| /// One-time global initialization. |
| pub unsafe fn init(argc: isize, argv: *const *const u8) { imp::init(argc, argv) } |
| |
| /// One-time global cleanup. |
| pub unsafe fn cleanup() { imp::cleanup() } |
| |
| /// Returns the command line arguments |
| pub fn args() -> Args { |
| imp::args() |
| } |
| |
| pub struct Args { |
| iter: vec::IntoIter<OsString>, |
| _dont_send_or_sync_me: PhantomData<*mut ()>, |
| } |
| |
| impl Args { |
| pub fn inner_debug(&self) -> &[OsString] { |
| self.iter.as_slice() |
| } |
| } |
| |
| impl Iterator for Args { |
| type Item = OsString; |
| fn next(&mut self) -> Option<OsString> { self.iter.next() } |
| fn size_hint(&self) -> (usize, Option<usize>) { self.iter.size_hint() } |
| } |
| |
| impl ExactSizeIterator for Args { |
| fn len(&self) -> usize { self.iter.len() } |
| } |
| |
| impl DoubleEndedIterator for Args { |
| fn next_back(&mut self) -> Option<OsString> { self.iter.next_back() } |
| } |
| |
| mod imp { |
| use crate::ptr; |
| use crate::ffi::{CStr, OsString}; |
| use crate::marker::PhantomData; |
| use libc; |
| use super::Args; |
| |
| use crate::sys_common::mutex::Mutex; |
| |
| static mut ARGC: isize = 0; |
| static mut ARGV: *const *const u8 = ptr::null(); |
| static LOCK: Mutex = Mutex::new(); |
| |
| pub unsafe fn init(argc: isize, argv: *const *const u8) { |
| let _guard = LOCK.lock(); |
| ARGC = argc; |
| ARGV = argv; |
| } |
| |
| pub unsafe fn cleanup() { |
| let _guard = LOCK.lock(); |
| ARGC = 0; |
| ARGV = ptr::null(); |
| } |
| |
| pub fn args() -> Args { |
| Args { |
| iter: clone().into_iter(), |
| _dont_send_or_sync_me: PhantomData |
| } |
| } |
| |
| fn clone() -> Vec<OsString> { |
| unsafe { |
| let _guard = LOCK.lock(); |
| let ret = (0..ARGC).map(|i| { |
| let cstr = CStr::from_ptr(*ARGV.offset(i) as *const libc::c_char); |
| use crate::sys::vxworks::ext::ffi::OsStringExt; |
| OsStringExt::from_vec(cstr.to_bytes().to_vec()) |
| }).collect(); |
| return ret |
| } |
| } |
| } |