72 lines
1.7 KiB
Rust
72 lines
1.7 KiB
Rust
use io;
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use libc;
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use sys::fd::FileDesc;
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pub struct Stdin(());
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pub struct Stdout(());
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pub struct Stderr(());
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impl Stdin {
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pub fn new() -> io::Result<Stdin> { Ok(Stdin(())) }
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pub fn read(&self, data: &mut [u8]) -> io::Result<usize> {
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let fd = FileDesc::new(libc::STDIN_FILENO);
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let ret = fd.read(data);
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fd.into_raw(); // do not close this FD
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ret
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}
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}
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impl Stdout {
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pub fn new() -> io::Result<Stdout> { Ok(Stdout(())) }
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pub fn write(&self, data: &[u8]) -> io::Result<usize> {
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let fd = FileDesc::new(libc::STDOUT_FILENO);
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let ret = fd.write(data);
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fd.into_raw(); // do not close this FD
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ret
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}
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pub fn flush(&self) -> io::Result<()> {
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Ok(())
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}
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}
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impl Stderr {
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pub fn new() -> io::Result<Stderr> { Ok(Stderr(())) }
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pub fn write(&self, data: &[u8]) -> io::Result<usize> {
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let fd = FileDesc::new(libc::STDERR_FILENO);
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let ret = fd.write(data);
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fd.into_raw(); // do not close this FD
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ret
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}
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pub fn flush(&self) -> io::Result<()> {
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Ok(())
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}
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}
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// FIXME: right now this raw stderr handle is used in a few places because
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// std::io::stderr_raw isn't exposed, but once that's exposed this impl
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// should go away
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impl io::Write for Stderr {
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fn write(&mut self, data: &[u8]) -> io::Result<usize> {
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Stderr::write(self, data)
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}
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fn flush(&mut self) -> io::Result<()> {
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Stderr::flush(self)
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}
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}
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pub fn is_ebadf(err: &io::Error) -> bool {
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err.raw_os_error() == Some(libc::EBADF as i32)
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}
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pub const STDIN_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE;
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pub fn panic_output() -> Option<impl io::Write> {
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Stderr::new().ok()
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}
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