pub trait Reader {
fn read(&self, bytes: &mut [u8], len: uint) -> uint;
fn read_byte(&self) -> int;
fn eof(&self) -> bool;
fn seek(&self, position: int, style: SeekStyle);
fn tell(&self) -> uint;
}The core Reader trait. All readers must implement this trait.
None right now.
fn read(&self, bytes: &mut [u8], len: uint) -> uintReads bytes and puts them into bytes, advancing the cursor. Returns the
number of bytes read.
The number of bytes to be read is len or the end of the file,
whichever comes first.
The buffer must be at least len bytes long.
read is conceptually similar to C's fread function.
None right now.
fn read_byte(&self) -> intReads a single byte, advancing the cursor.
In the case of an EOF or an error, returns a negative value.
read_byte is conceptually similar to C's getc function.
None right now.
fn eof(&self) -> boolReturns a boolean value: are we currently at EOF?
Note that stream position may be already at the end-of-file point,
but eof returns false until an attempt to read at that position.
eof is conceptually similar to C's feof function.
None right now.
fn seek(&self, position: int, style: SeekStyle)Seek to a given position in the stream.
Takes an optional SeekStyle, which affects how we seek from the
position. See SeekStyle docs for more details.
seek is conceptually similar to C's fseek function.
None right now.
fn tell(&self) -> uintReturns the current position within the stream.
tell is conceptually similar to C's ftell function.
None right now.
BytesReaderWrapper<R, C>impl Reader for @Readerimpl Reader for *FILE
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