Struct virtual_fs::mem_fs::Stderr

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pub struct Stderr {
    pub buf: Vec<u8>,
}
Expand description

A wrapper type around the standard I/O stream of the same name that implements VirtualFile.

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§buf: Vec<u8>

Trait Implementations§

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impl AsyncRead for Stderr

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fn poll_read( self: Pin<&mut Self>, _cx: &mut Context<'_>, buf: &mut ReadBuf<'_> ) -> Poll<Result<()>>

Attempts to read from the AsyncRead into buf. Read more
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impl AsyncSeek for Stderr

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fn start_seek(self: Pin<&mut Self>, _position: SeekFrom) -> Result<()>

Attempts to seek to an offset, in bytes, in a stream. Read more
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fn poll_complete( self: Pin<&mut Self>, _cx: &mut Context<'_> ) -> Poll<Result<u64>>

Waits for a seek operation to complete. Read more
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impl AsyncWrite for Stderr

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fn poll_write( self: Pin<&mut Self>, _cx: &mut Context<'_>, buf: &[u8] ) -> Poll<Result<usize>>

Attempt to write bytes from buf into the object. Read more
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fn poll_flush(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<Result<()>>

Attempts to flush the object, ensuring that any buffered data reach their destination. Read more
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fn poll_shutdown( self: Pin<&mut Self>, _cx: &mut Context<'_> ) -> Poll<Result<()>>

Initiates or attempts to shut down this writer, returning success when the I/O connection has completely shut down. Read more
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fn poll_write_vectored( self: Pin<&mut Self>, cx: &mut Context<'_>, bufs: &[IoSlice<'_>] ) -> Poll<Result<usize, Error>>

Like poll_write, except that it writes from a slice of buffers. Read more
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fn is_write_vectored(&self) -> bool

Determines if this writer has an efficient poll_write_vectored implementation. Read more
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impl Debug for Stderr

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for Stderr

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fn default() -> Stderr

Returns the “default value” for a type. Read more
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impl VirtualFile for Stderr

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fn last_accessed(&self) -> u64

the last time the file was accessed in nanoseconds as a UNIX timestamp
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fn last_modified(&self) -> u64

the last time the file was modified in nanoseconds as a UNIX timestamp
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fn created_time(&self) -> u64

the time at which the file was created in nanoseconds as a UNIX timestamp
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fn size(&self) -> u64

the size of the file in bytes
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fn set_len(&mut self, _new_size: u64) -> Result<()>

Change the size of the file, if the new_size is greater than the current size the extra bytes will be allocated and zeroed
Request deletion of the file
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fn poll_read_ready( self: Pin<&mut Self>, _cx: &mut Context<'_> ) -> Poll<Result<usize>>

Polls the file for when there is data to be read
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fn poll_write_ready( self: Pin<&mut Self>, _cx: &mut Context<'_> ) -> Poll<Result<usize>>

Polls the file for when it is available for writing
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fn is_open(&self) -> bool

Indicates if the file is opened or closed. This function must not block Defaults to a status of being constantly open
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fn get_special_fd(&self) -> Option<u32>

Used for “special” files such as stdin, stdout and stderr. Always returns the same file descriptor (0, 1 or 2). Returns None on normal files
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fn copy_reference( &mut self, src: Box<dyn VirtualFile + Send + Sync + 'static> ) -> BoxFuture<'_, Result<()>>

This method will copy a file from a source to this destination where the default is to do a straight byte copy however file system implementors may optimize this to do a zero copy

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<R> AsyncReadExt for Rwhere R: AsyncRead + ?Sized,

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fn chain<R>(self, next: R) -> Chain<Self, R>where Self: Sized, R: AsyncRead,

Creates a new AsyncRead instance that chains this stream with next. Read more
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fn read<'a>(&'a mut self, buf: &'a mut [u8]) -> Read<'a, Self>where Self: Unpin,

Pulls some bytes from this source into the specified buffer, returning how many bytes were read. Read more
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fn read_buf<B, 'a>(&'a mut self, buf: &'a mut B) -> ReadBuf<'a, Self, B>where Self: Sized + Unpin, B: BufMut,

Pulls some bytes from this source into the specified buffer, advancing the buffer’s internal cursor. Read more
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fn read_exact<'a>(&'a mut self, buf: &'a mut [u8]) -> ReadExact<'a, Self>where Self: Unpin,

Reads the exact number of bytes required to fill buf. Read more
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fn read_u8<'a>(&'a mut self) -> ReadU8<&'a mut Self>where Self: Unpin,

Reads an unsigned 8 bit integer from the underlying reader. Read more
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fn read_i8<'a>(&'a mut self) -> ReadI8<&'a mut Self>where Self: Unpin,

Reads a signed 8 bit integer from the underlying reader. Read more
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fn read_u16<'a>(&'a mut self) -> ReadU16<&'a mut Self>where Self: Unpin,

Reads an unsigned 16-bit integer in big-endian order from the underlying reader. Read more
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fn read_i16<'a>(&'a mut self) -> ReadI16<&'a mut Self>where Self: Unpin,

Reads a signed 16-bit integer in big-endian order from the underlying reader. Read more
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fn read_u32<'a>(&'a mut self) -> ReadU32<&'a mut Self>where Self: Unpin,

Reads an unsigned 32-bit integer in big-endian order from the underlying reader. Read more
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fn read_i32<'a>(&'a mut self) -> ReadI32<&'a mut Self>where Self: Unpin,

Reads a signed 32-bit integer in big-endian order from the underlying reader. Read more
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fn read_u64<'a>(&'a mut self) -> ReadU64<&'a mut Self>where Self: Unpin,

Reads an unsigned 64-bit integer in big-endian order from the underlying reader. Read more
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fn read_i64<'a>(&'a mut self) -> ReadI64<&'a mut Self>where Self: Unpin,

Reads an signed 64-bit integer in big-endian order from the underlying reader. Read more
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fn read_u128<'a>(&'a mut self) -> ReadU128<&'a mut Self>where Self: Unpin,

Reads an unsigned 128-bit integer in big-endian order from the underlying reader. Read more
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fn read_i128<'a>(&'a mut self) -> ReadI128<&'a mut Self>where Self: Unpin,

Reads an signed 128-bit integer in big-endian order from the underlying reader. Read more
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fn read_f32<'a>(&'a mut self) -> ReadF32<&'a mut Self>where Self: Unpin,

Reads an 32-bit floating point type in big-endian order from the underlying reader. Read more
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fn read_f64<'a>(&'a mut self) -> ReadF64<&'a mut Self>where Self: Unpin,

Reads an 64-bit floating point type in big-endian order from the underlying reader. Read more
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fn read_u16_le<'a>(&'a mut self) -> ReadU16Le<&'a mut Self>where Self: Unpin,

Reads an unsigned 16-bit integer in little-endian order from the underlying reader. Read more
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fn read_i16_le<'a>(&'a mut self) -> ReadI16Le<&'a mut Self>where Self: Unpin,

Reads a signed 16-bit integer in little-endian order from the underlying reader. Read more
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fn read_u32_le<'a>(&'a mut self) -> ReadU32Le<&'a mut Self>where Self: Unpin,

Reads an unsigned 32-bit integer in little-endian order from the underlying reader. Read more
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fn read_i32_le<'a>(&'a mut self) -> ReadI32Le<&'a mut Self>where Self: Unpin,

Reads a signed 32-bit integer in little-endian order from the underlying reader. Read more
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fn read_u64_le<'a>(&'a mut self) -> ReadU64Le<&'a mut Self>where Self: Unpin,

Reads an unsigned 64-bit integer in little-endian order from the underlying reader. Read more
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fn read_i64_le<'a>(&'a mut self) -> ReadI64Le<&'a mut Self>where Self: Unpin,

Reads an signed 64-bit integer in little-endian order from the underlying reader. Read more
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fn read_u128_le<'a>(&'a mut self) -> ReadU128Le<&'a mut Self>where Self: Unpin,

Reads an unsigned 128-bit integer in little-endian order from the underlying reader. Read more
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fn read_i128_le<'a>(&'a mut self) -> ReadI128Le<&'a mut Self>where Self: Unpin,

Reads an signed 128-bit integer in little-endian order from the underlying reader. Read more
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fn read_f32_le<'a>(&'a mut self) -> ReadF32Le<&'a mut Self>where Self: Unpin,

Reads an 32-bit floating point type in little-endian order from the underlying reader. Read more
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fn read_f64_le<'a>(&'a mut self) -> ReadF64Le<&'a mut Self>where Self: Unpin,

Reads an 64-bit floating point type in little-endian order from the underlying reader. Read more
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fn read_to_end<'a>( &'a mut self, buf: &'a mut Vec<u8, Global> ) -> ReadToEnd<'a, Self>where Self: Unpin,

Reads all bytes until EOF in this source, placing them into buf. Read more
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fn read_to_string<'a>( &'a mut self, dst: &'a mut String ) -> ReadToString<'a, Self>where Self: Unpin,

Reads all bytes until EOF in this source, appending them to buf. Read more
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fn take(self, limit: u64) -> Take<Self>where Self: Sized,

Creates an adaptor which reads at most limit bytes from it. Read more
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impl<S> AsyncSeekExt for Swhere S: AsyncSeek + ?Sized,

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fn seek(&mut self, pos: SeekFrom) -> Seek<'_, Self>where Self: Unpin,

Creates a future which will seek an IO object, and then yield the new position in the object and the object itself. Read more
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fn rewind(&mut self) -> Seek<'_, Self>where Self: Unpin,

Creates a future which will rewind to the beginning of the stream. Read more
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fn stream_position(&mut self) -> Seek<'_, Self>where Self: Unpin,

Creates a future which will return the current seek position from the start of the stream. Read more
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impl<W> AsyncWriteExt for Wwhere W: AsyncWrite + ?Sized,

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fn write<'a>(&'a mut self, src: &'a [u8]) -> Write<'a, Self>where Self: Unpin,

Writes a buffer into this writer, returning how many bytes were written. Read more
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fn write_vectored<'a, 'b>( &'a mut self, bufs: &'a [IoSlice<'b>] ) -> WriteVectored<'a, 'b, Self>where Self: Unpin,

Like write, except that it writes from a slice of buffers. Read more
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fn write_buf<B, 'a>(&'a mut self, src: &'a mut B) -> WriteBuf<'a, Self, B>where Self: Sized + Unpin, B: Buf,

Writes a buffer into this writer, advancing the buffer’s internal cursor. Read more
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fn write_all_buf<B, 'a>( &'a mut self, src: &'a mut B ) -> WriteAllBuf<'a, Self, B>where Self: Sized + Unpin, B: Buf,

Attempts to write an entire buffer into this writer. Read more
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fn write_all<'a>(&'a mut self, src: &'a [u8]) -> WriteAll<'a, Self>where Self: Unpin,

Attempts to write an entire buffer into this writer. Read more
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fn write_u8<'a>(&'a mut self, n: u8) -> WriteU8<&'a mut Self>where Self: Unpin,

Writes an unsigned 8-bit integer to the underlying writer. Read more
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fn write_i8<'a>(&'a mut self, n: i8) -> WriteI8<&'a mut Self>where Self: Unpin,

Writes a signed 8-bit integer to the underlying writer. Read more
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fn write_u16<'a>(&'a mut self, n: u16) -> WriteU16<&'a mut Self>where Self: Unpin,

Writes an unsigned 16-bit integer in big-endian order to the underlying writer. Read more
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fn write_i16<'a>(&'a mut self, n: i16) -> WriteI16<&'a mut Self>where Self: Unpin,

Writes a signed 16-bit integer in big-endian order to the underlying writer. Read more
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fn write_u32<'a>(&'a mut self, n: u32) -> WriteU32<&'a mut Self>where Self: Unpin,

Writes an unsigned 32-bit integer in big-endian order to the underlying writer. Read more
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fn write_i32<'a>(&'a mut self, n: i32) -> WriteI32<&'a mut Self>where Self: Unpin,

Writes a signed 32-bit integer in big-endian order to the underlying writer. Read more
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fn write_u64<'a>(&'a mut self, n: u64) -> WriteU64<&'a mut Self>where Self: Unpin,

Writes an unsigned 64-bit integer in big-endian order to the underlying writer. Read more
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fn write_i64<'a>(&'a mut self, n: i64) -> WriteI64<&'a mut Self>where Self: Unpin,

Writes an signed 64-bit integer in big-endian order to the underlying writer. Read more
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fn write_u128<'a>(&'a mut self, n: u128) -> WriteU128<&'a mut Self>where Self: Unpin,

Writes an unsigned 128-bit integer in big-endian order to the underlying writer. Read more
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fn write_i128<'a>(&'a mut self, n: i128) -> WriteI128<&'a mut Self>where Self: Unpin,

Writes an signed 128-bit integer in big-endian order to the underlying writer. Read more
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fn write_f32<'a>(&'a mut self, n: f32) -> WriteF32<&'a mut Self>where Self: Unpin,

Writes an 32-bit floating point type in big-endian order to the underlying writer. Read more
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fn write_f64<'a>(&'a mut self, n: f64) -> WriteF64<&'a mut Self>where Self: Unpin,

Writes an 64-bit floating point type in big-endian order to the underlying writer. Read more
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fn write_u16_le<'a>(&'a mut self, n: u16) -> WriteU16Le<&'a mut Self>where Self: Unpin,

Writes an unsigned 16-bit integer in little-endian order to the underlying writer. Read more
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fn write_i16_le<'a>(&'a mut self, n: i16) -> WriteI16Le<&'a mut Self>where Self: Unpin,

Writes a signed 16-bit integer in little-endian order to the underlying writer. Read more
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fn write_u32_le<'a>(&'a mut self, n: u32) -> WriteU32Le<&'a mut Self>where Self: Unpin,

Writes an unsigned 32-bit integer in little-endian order to the underlying writer. Read more
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fn write_i32_le<'a>(&'a mut self, n: i32) -> WriteI32Le<&'a mut Self>where Self: Unpin,

Writes a signed 32-bit integer in little-endian order to the underlying writer. Read more
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fn write_u64_le<'a>(&'a mut self, n: u64) -> WriteU64Le<&'a mut Self>where Self: Unpin,

Writes an unsigned 64-bit integer in little-endian order to the underlying writer. Read more
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fn write_i64_le<'a>(&'a mut self, n: i64) -> WriteI64Le<&'a mut Self>where Self: Unpin,

Writes an signed 64-bit integer in little-endian order to the underlying writer. Read more
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fn write_u128_le<'a>(&'a mut self, n: u128) -> WriteU128Le<&'a mut Self>where Self: Unpin,

Writes an unsigned 128-bit integer in little-endian order to the underlying writer. Read more
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fn write_i128_le<'a>(&'a mut self, n: i128) -> WriteI128Le<&'a mut Self>where Self: Unpin,

Writes an signed 128-bit integer in little-endian order to the underlying writer. Read more
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fn write_f32_le<'a>(&'a mut self, n: f32) -> WriteF32Le<&'a mut Self>where Self: Unpin,

Writes an 32-bit floating point type in little-endian order to the underlying writer. Read more
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fn write_f64_le<'a>(&'a mut self, n: f64) -> WriteF64Le<&'a mut Self>where Self: Unpin,

Writes an 64-bit floating point type in little-endian order to the underlying writer. Read more
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fn flush(&mut self) -> Flush<'_, Self>where Self: Unpin,

Flushes this output stream, ensuring that all intermediately buffered contents reach their destination. Read more
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fn shutdown(&mut self) -> Shutdown<'_, Self>where Self: Unpin,

Shuts down the output stream, ensuring that the value can be dropped cleanly. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same<T> for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> Upcastable for Twhere T: Any + Debug + 'static,

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fn upcast_any_ref(&self) -> &(dyn Any + 'static)

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fn upcast_any_mut(&mut self) -> &mut (dyn Any + 'static)

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fn upcast_any_box(self: Box<T, Global>) -> Box<dyn Any, Global>

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more