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