130 lines
4.9 KiB
C
130 lines
4.9 KiB
C
/*
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LZ4io.h - LZ4 File/Stream Interface
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Copyright (C) Yann Collet 2011-2016
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GPL v2 License
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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You can contact the author at :
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- LZ4 source repository : https://github.com/lz4/lz4
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- LZ4 public forum : https://groups.google.com/forum/#!forum/lz4c
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*/
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/*
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Note : this is stand-alone program.
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It is not part of LZ4 compression library, it is a user code of the LZ4 library.
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- The license of LZ4 library is BSD.
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- The license of xxHash library is BSD.
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- The license of this source file is GPLv2.
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*/
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#ifndef LZ4IO_H_237902873
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#define LZ4IO_H_237902873
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/*--- Dependency ---*/
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#include <stddef.h> /* size_t */
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/* ************************************************** */
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/* Special input/output values */
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/* ************************************************** */
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#define NULL_OUTPUT "null"
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static const char stdinmark[] = "stdin";
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static const char stdoutmark[] = "stdout";
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#ifdef _WIN32
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static const char nulmark[] = "nul";
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#else
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static const char nulmark[] = "/dev/null";
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#endif
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/* ************************************************** */
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/* ****************** Type Definitions ************** */
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/* ************************************************** */
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typedef struct LZ4IO_prefs_s LZ4IO_prefs_t;
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LZ4IO_prefs_t* LZ4IO_defaultPreferences(void);
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void LZ4IO_freePreferences(LZ4IO_prefs_t* const prefs);
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/* ************************************************** */
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/* ****************** Functions ********************* */
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/* ************************************************** */
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/* if output_filename == stdoutmark, writes to stdout */
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int LZ4IO_compressFilename(LZ4IO_prefs_t* const prefs, const char* input_filename, const char* output_filename, int compressionlevel);
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int LZ4IO_decompressFilename(LZ4IO_prefs_t* const prefs, const char* input_filename, const char* output_filename);
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/* if suffix == stdoutmark, writes to stdout */
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int LZ4IO_compressMultipleFilenames(LZ4IO_prefs_t* const prefs, const char** inFileNamesTable, int ifntSize, const char* suffix, int compressionlevel);
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int LZ4IO_decompressMultipleFilenames(LZ4IO_prefs_t* const prefs, const char** inFileNamesTable, int ifntSize, const char* suffix);
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/* ************************************************** */
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/* ****************** Parameters ******************** */
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/* ************************************************** */
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int LZ4IO_setDictionaryFilename(LZ4IO_prefs_t* const prefs, const char* dictionaryFilename);
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/* Default setting : passThrough = 0;
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return : passThrough mode (0/1) */
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int LZ4IO_setPassThrough(LZ4IO_prefs_t* const prefs, int yes);
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/* Default setting : overwrite = 1;
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return : overwrite mode (0/1) */
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int LZ4IO_setOverwrite(LZ4IO_prefs_t* const prefs, int yes);
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/* Default setting : testMode = 0;
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return : testMode (0/1) */
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int LZ4IO_setTestMode(LZ4IO_prefs_t* const prefs, int yes);
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/* blockSizeID : valid values : 4-5-6-7
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return : 0 if error, blockSize if OK */
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size_t LZ4IO_setBlockSizeID(LZ4IO_prefs_t* const prefs, unsigned blockSizeID);
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/* blockSize : valid values : 32 -> 4MB
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return : 0 if error, actual blocksize if OK */
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size_t LZ4IO_setBlockSize(LZ4IO_prefs_t* const prefs, size_t blockSize);
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/* Default setting : independent blocks */
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typedef enum { LZ4IO_blockLinked=0, LZ4IO_blockIndependent} LZ4IO_blockMode_t;
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int LZ4IO_setBlockMode(LZ4IO_prefs_t* const prefs, LZ4IO_blockMode_t blockMode);
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/* Default setting : no block checksum */
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int LZ4IO_setBlockChecksumMode(LZ4IO_prefs_t* const prefs, int xxhash);
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/* Default setting : stream checksum enabled */
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int LZ4IO_setStreamChecksumMode(LZ4IO_prefs_t* const prefs, int xxhash);
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/* Default setting : 0 (no notification) */
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int LZ4IO_setNotificationLevel(int level);
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/* Default setting : 0 (disabled) */
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int LZ4IO_setSparseFile(LZ4IO_prefs_t* const prefs, int enable);
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/* Default setting : 0 == no content size present in frame header */
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int LZ4IO_setContentSize(LZ4IO_prefs_t* const prefs, int enable);
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int LZ4IO_displayCompressedFilesInfo(const char** inFileNames,const size_t ifnIdx);
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/* Default setting : 0 == src file preserved */
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void LZ4IO_setRemoveSrcFile(LZ4IO_prefs_t* const prefs, unsigned flag);
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/* Default setting : 0 == favor compression ratio
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* Note : 1 only works for high compression levels (10+) */
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void LZ4IO_favorDecSpeed(LZ4IO_prefs_t* const prefs, int favor);
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#endif /* LZ4IO_H_237902873 */
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