ZIOStream Class Reference

#include <Pt/ZStream.h>

Bidirectional stream for zlib or gzip. More...

Inherits BasicIOStream< char >.

Public Types
using	Format = ZBuffer::Format
	Compression/decompression format.

Public Member Functions
	ZIOStream ()
	Construct with target stream.
	ZIOStream (std::iostream &ios)
	Construct with target stream.
	~ZIOStream ()
	Destructor.
ZBuffer &	zBuffer ()
	Returns the compression buffer.
void	attach (std::iostream &ios)
	Attach to target stream.
void	detach ()
	Detach from target stream.
void	reset ()
	Reset to begin new compression/decompression.
void	reset (std::iostream &ios)
	Reset to begin new compression/decompression.
void	finish ()
	Finish and flush remaining data to the target stream.
std::size_t	zcount () const
	Returns the total number of decompressed bytes produced so far.
std::streamsize	peeksome (char *buffer, std::streamsize n)
	Peeks bytes in the stream buffer.
std::streamsize	writesome (char *buffer, std::streamsize n)
	Write as much data as fits in buffer.
BasicStreamBuffer< char > *	buffer ()
	Returns the buffer.
void	setBuffer (BasicStreamBuffer< char > *sb)
	Sets the buffer.

Detailed Description

ZIOStream owns a ZBuffer and reads and writes uncompressed bytes on a compressed std::iostream. attach(), detach(), reset() and finish() forward to the buffer. zcount() is inflate output so far. The target is not owned.

Member Function Documentation

peeksome()

std::streamsize peeksome ( char * buffer, std::streamsize n )

inherited

The number of bytes that can be peeked depends on the current stream buffer get area and maybe less than requested, similar to istream::readsome().