#include <zlib.h>

Include dependency graph for hgzip.h:

This graph shows which files directly or indirectly include this file:

Classes
struct	gz_stream
	Structure for using z_stream. More...

Functions
gz_stream *	gz_open (HStream &_stream)
	Opens a gzipped stream for reading. More...

int	gz_close (gz_stream *file)
	Flushes all pending output if necessary, closes the compressed stream and deallocates all the (de)compression state. More...

size_t	gz_read (gz_stream *file, voidp buf, unsigned len)
	Reads the given number of uncompressed bytes from the compressed stream. More...

int	gz_flush (gz_stream *file, int flush)
	Flushes all pending output into the compressed file gz_flush should be called only when strictly necessary because it can degrade compression. More...

Function Documentation

◆ gz_close()

int gz_close ( gz_stream * file )

Flushes all pending output if necessary, closes the compressed stream and deallocates all the (de)compression state.

Definition at line 278 of file hgzip.cxx.

References gz_stream::crc, destroy(), err, gz_flush(), gz_stream::mode, and gz_stream::stream.

Referenced by HStreamIODev::setCompressed(), and HStreamIODev::~HStreamIODev().

◆ gz_flush()

int gz_flush	(	gz_stream *	file,
		int	flush
	)

Flushes all pending output into the compressed file gz_flush should be called only when strictly necessary because it can degrade compression.

Parameters

flush Is as in the deflate() function

Definition at line 215 of file hgzip.cxx.

References gz_stream::mode, gz_stream::stream, Z_BUFSIZE, and gz_stream::z_err.

Referenced by HStreamIODev::flush(), gz_close(), and HStreamIODev::setCompressed().

◆ gz_open()

gz_stream * gz_open ( HStream & _stream )

Opens a gzipped stream for reading.

gz_open returns NULL if the stream could not be opened or if there was insufficient memory to allocate the (de)compression state; errno can be checked to distinguish the two cases (if errno is zero, the zlib error is Z_MEM_ERROR).

Parameters

_stream Reference of stream object having binary data.

Definition at line 47 of file hgzip.cxx.

References gz_stream::_inputstream, ALLOC, Byte, gz_stream::crc, destroy(), err, gz_stream::inbuf, gz_stream::mode, gz_stream::msg, gz_stream::stream, Z_BUFSIZE, gz_stream::z_eof, and gz_stream::z_err.