107 lines
2.3 KiB
Rust
107 lines
2.3 KiB
Rust
use crate::io::{self, BorrowedCursor, IoSlice, IoSliceMut};
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pub struct Stdin;
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pub struct Stdout;
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pub type Stderr = Stdout;
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impl Stdin {
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pub const fn new() -> Stdin {
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Stdin
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}
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}
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impl io::Read for Stdin {
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#[inline]
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fn read(&mut self, _buf: &mut [u8]) -> io::Result<usize> {
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Ok(0)
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}
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#[inline]
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fn read_buf(&mut self, _cursor: BorrowedCursor<'_>) -> io::Result<()> {
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Ok(())
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}
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#[inline]
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fn read_vectored(&mut self, _bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
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Ok(0)
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}
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#[inline]
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fn is_read_vectored(&self) -> bool {
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// Do not force `Chain<Empty, T>` or `Chain<T, Empty>` to use vectored
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// reads, unless the other reader is vectored.
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false
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}
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#[inline]
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fn read_exact(&mut self, buf: &mut [u8]) -> io::Result<()> {
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if !buf.is_empty() { Err(io::Error::READ_EXACT_EOF) } else { Ok(()) }
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}
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#[inline]
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fn read_buf_exact(&mut self, cursor: BorrowedCursor<'_>) -> io::Result<()> {
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if cursor.capacity() != 0 { Err(io::Error::READ_EXACT_EOF) } else { Ok(()) }
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}
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#[inline]
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fn read_to_end(&mut self, _buf: &mut Vec<u8>) -> io::Result<usize> {
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Ok(0)
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}
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#[inline]
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fn read_to_string(&mut self, _buf: &mut String) -> io::Result<usize> {
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Ok(0)
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}
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}
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impl Stdout {
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pub const fn new() -> Stdout {
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Stdout
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}
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}
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impl io::Write for Stdout {
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#[inline]
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fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
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Ok(buf.len())
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}
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#[inline]
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fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> io::Result<usize> {
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let total_len = bufs.iter().map(|b| b.len()).sum();
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Ok(total_len)
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}
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#[inline]
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fn is_write_vectored(&self) -> bool {
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true
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}
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#[inline]
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fn write_all(&mut self, _buf: &[u8]) -> io::Result<()> {
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Ok(())
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}
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#[inline]
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fn write_all_vectored(&mut self, _bufs: &mut [IoSlice<'_>]) -> io::Result<()> {
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Ok(())
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}
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// Keep the default write_fmt so the `fmt::Arguments` are still evaluated.
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#[inline]
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fn flush(&mut self) -> io::Result<()> {
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Ok(())
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}
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}
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pub const STDIN_BUF_SIZE: usize = 0;
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pub fn is_ebadf(_err: &io::Error) -> bool {
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true
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}
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pub fn panic_output() -> Option<Vec<u8>> {
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None
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}
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