cfile

Trait Stream

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pub trait Stream:
    Read
    + Write
    + Seek {
    // Required methods
    fn position(&self) -> Result<u64>;
    fn eof(&self) -> bool;
    fn errno(&self) -> i32;
    fn last_error(&self) -> Option<Error>;
    fn clear_error(&self);
    fn file_name(&self) -> Result<PathBuf>;
    fn metadata(&self) -> Result<Metadata>;
    fn read_slice<T: Sized>(&mut self, elements: &mut [T]) -> Result<usize>;
    fn write_slice<T: Sized>(&mut self, elements: &[T]) -> Result<usize>;
}
Expand description

The C *FILE stream

Required Methods§

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fn position(&self) -> Result<u64>

returns the current position of the stream.

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fn eof(&self) -> bool

tests the end-of-file indicator for the stream

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fn errno(&self) -> i32

tests the error indicator for the stream

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fn last_error(&self) -> Option<Error>

get the last error of the stream

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fn clear_error(&self)

clears the end-of-file and error indicators for the stream

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fn file_name(&self) -> Result<PathBuf>

returns the file name of the stream

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fn metadata(&self) -> Result<Metadata>

Queries metadata about the underlying file.

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fn read_slice<T: Sized>(&mut self, elements: &mut [T]) -> Result<usize>

Reads n elements of data, return the number of items read.

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fn write_slice<T: Sized>(&mut self, elements: &[T]) -> Result<usize>

Writes n elements of data, return the number of items written.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§