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#![allow(dead_code)]
use os::windows::prelude::*;
use sys::c;
use slice;
use ops::Range;
use ffi::OsString;
use libc::{c_int, c_void};
pub unsafe fn init(_argc: isize, _argv: *const *const u8) { }
pub unsafe fn cleanup() { }
pub fn args() -> Args {
unsafe {
let mut nArgs: c_int = 0;
let lpCmdLine = c::GetCommandLineW();
let szArgList = c::CommandLineToArgvW(lpCmdLine, &mut nArgs);
Args { cur: szArgList, range: 0..(nArgs as isize) }
}
}
pub struct Args {
range: Range<isize>,
cur: *mut *mut u16,
}
unsafe fn os_string_from_ptr(ptr: *mut u16) -> OsString {
let mut len = 0;
while *ptr.offset(len) != 0 { len += 1; }
let ptr = ptr as *const u16;
let buf = slice::from_raw_parts(ptr, len as usize);
OsStringExt::from_wide(buf)
}
impl Iterator for Args {
type Item = OsString;
fn next(&mut self) -> Option<OsString> {
self.range.next().map(|i| unsafe { os_string_from_ptr(*self.cur.offset(i)) } )
}
fn size_hint(&self) -> (usize, Option<usize>) { self.range.size_hint() }
}
impl DoubleEndedIterator for Args {
fn next_back(&mut self) -> Option<OsString> {
self.range.next_back().map(|i| unsafe { os_string_from_ptr(*self.cur.offset(i)) } )
}
}
impl ExactSizeIterator for Args {
fn len(&self) -> usize { self.range.len() }
}
impl Drop for Args {
fn drop(&mut self) {
unsafe { c::LocalFree(self.cur as *mut c_void); }
}
}