| use crate::io; |
| use crate::sys::fd::FileDesc; |
| |
| pub struct Stdin(()); |
| pub struct Stdout(()); |
| pub struct Stderr(()); |
| |
| impl Stdin { |
| pub fn new() -> io::Result<Stdin> { |
| Ok(Stdin(())) |
| } |
| } |
| |
| impl io::Read for Stdin { |
| fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { |
| let fd = FileDesc::new(libc::STDIN_FILENO); |
| let ret = fd.read(buf); |
| fd.into_raw(); // do not close this FD |
| ret |
| } |
| } |
| |
| impl Stdout { |
| pub fn new() -> io::Result<Stdout> { |
| Ok(Stdout(())) |
| } |
| } |
| |
| impl io::Write for Stdout { |
| fn write(&mut self, buf: &[u8]) -> io::Result<usize> { |
| let fd = FileDesc::new(libc::STDOUT_FILENO); |
| let ret = fd.write(buf); |
| fd.into_raw(); // do not close this FD |
| ret |
| } |
| |
| fn flush(&mut self) -> io::Result<()> { |
| Ok(()) |
| } |
| } |
| |
| impl Stderr { |
| pub fn new() -> io::Result<Stderr> { |
| Ok(Stderr(())) |
| } |
| } |
| |
| impl io::Write for Stderr { |
| fn write(&mut self, buf: &[u8]) -> io::Result<usize> { |
| let fd = FileDesc::new(libc::STDERR_FILENO); |
| let ret = fd.write(buf); |
| fd.into_raw(); // do not close this FD |
| ret |
| } |
| |
| fn flush(&mut self) -> io::Result<()> { |
| Ok(()) |
| } |
| } |
| |
| pub fn is_ebadf(err: &io::Error) -> bool { |
| err.raw_os_error() == Some(libc::EBADF as i32) |
| } |
| |
| pub const STDIN_BUF_SIZE: usize = crate::sys_common::io::DEFAULT_BUF_SIZE; |
| |
| pub fn panic_output() -> Option<impl io::Write> { |
| Stderr::new().ok() |
| } |