| use crate::ffi::OsString; |
| use crate::marker::PhantomData; |
| use crate::os::wasi::ffi::OsStringExt; |
| use crate::vec; |
| |
| use ::wasi::wasi_unstable as wasi; |
| |
| pub unsafe fn init(_argc: isize, _argv: *const *const u8) { |
| } |
| |
| pub unsafe fn cleanup() { |
| } |
| |
| pub struct Args { |
| iter: vec::IntoIter<OsString>, |
| _dont_send_or_sync_me: PhantomData<*mut ()>, |
| } |
| |
| /// Returns the command line arguments |
| pub fn args() -> Args { |
| let buf = wasi::args_sizes_get().and_then(|args_sizes| { |
| let mut buf = Vec::with_capacity(args_sizes.get_count()); |
| wasi::args_get(args_sizes, |arg| { |
| let arg = OsString::from_vec(arg.to_vec()); |
| buf.push(arg); |
| })?; |
| Ok(buf) |
| }).unwrap_or(vec![]); |
| Args { |
| iter: buf.into_iter(), |
| _dont_send_or_sync_me: PhantomData |
| } |
| } |
| |
| 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() |
| } |
| } |