mirror of
https://github.com/emmanuel-marty/lzsa.git
synced 2025-01-21 01:31:39 +00:00
104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/*
|
|
* stream.h - streaming I/O definitions
|
|
*
|
|
* Copyright (C) 2019 Emmanuel Marty
|
|
*
|
|
* This software is provided 'as-is', without any express or implied
|
|
* warranty. In no event will the authors be held liable for any damages
|
|
* arising from the use of this software.
|
|
*
|
|
* Permission is granted to anyone to use this software for any purpose,
|
|
* including commercial applications, and to alter it and redistribute it
|
|
* freely, subject to the following restrictions:
|
|
*
|
|
* 1. The origin of this software must not be misrepresented; you must not
|
|
* claim that you wrote the original software. If you use this software
|
|
* in a product, an acknowledgment in the product documentation would be
|
|
* appreciated but is not required.
|
|
* 2. Altered source versions must be plainly marked as such, and must not be
|
|
* misrepresented as being the original software.
|
|
* 3. This notice may not be removed or altered from any source distribution.
|
|
*/
|
|
|
|
/*
|
|
* Uses the libdivsufsort library Copyright (c) 2003-2008 Yuta Mori
|
|
*
|
|
* Inspired by LZ4 by Yann Collet. https://github.com/lz4/lz4
|
|
* With help, ideas, optimizations and speed measurements by spke <zxintrospec@gmail.com>
|
|
* With ideas from Lizard by Przemyslaw Skibinski and Yann Collet. https://github.com/inikep/lizard
|
|
* Also with ideas from smallz4 by Stephan Brumme. https://create.stephan-brumme.com/smallz4/
|
|
*
|
|
*/
|
|
|
|
#ifndef _STREAM_H
|
|
#define _STREAM_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Forward declaration */
|
|
typedef struct _lzsa_stream_t lzsa_stream_t;
|
|
|
|
/* I/O stream */
|
|
typedef struct _lzsa_stream_t {
|
|
/** Opaque stream-specific pointer */
|
|
void *obj;
|
|
|
|
/**
|
|
* Read from stream
|
|
*
|
|
* @param stream stream
|
|
* @param ptr buffer to read into
|
|
* @param size number of bytes to read
|
|
*
|
|
* @return number of bytes read
|
|
*/
|
|
size_t(*read)(lzsa_stream_t *stream, void *ptr, size_t size);
|
|
|
|
/**
|
|
* Write to stream
|
|
*
|
|
* @param stream stream
|
|
* @param ptr buffer to write from
|
|
* @param size number of bytes to write
|
|
*
|
|
* @return number of bytes written
|
|
*/
|
|
size_t(*write)(lzsa_stream_t *stream, void *ptr, size_t size);
|
|
|
|
|
|
/**
|
|
* Check if stream has reached the end of the data
|
|
*
|
|
* @param stream stream
|
|
*
|
|
* @return nonzero if the end of the data has been reached, 0 if there is more data
|
|
*/
|
|
int(*eof)(lzsa_stream_t *stream);
|
|
|
|
/**
|
|
* Close stream
|
|
*
|
|
* @param stream stream
|
|
*/
|
|
void(*close)(lzsa_stream_t *stream);
|
|
} lzsa_stream_t;
|
|
|
|
/**
|
|
* Open file and create an I/O stream from it
|
|
*
|
|
* @param stream stream to fill out
|
|
* @param pszInFilename filename
|
|
* @param pszMode open mode, as with fopen()
|
|
*
|
|
* @return 0 for success, nonzero for failure
|
|
*/
|
|
int lzsa_filestream_open(lzsa_stream_t *stream, const char *pszInFilename, const char *pszMode);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _STREAM_H */
|