1 /* 2 LZ4io.h - LZ4 File/Stream Interface 3 Copyright (C) Yann Collet 2011-2014 4 GPL v2 License 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License along 17 with this program; if not, write to the Free Software Foundation, Inc., 18 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 19 20 You can contact the author at : 21 - LZ4 source repository : http://code.google.com/p/lz4/ 22 - LZ4 public forum : https://groups.google.com/forum/#!forum/lz4c 23 */ 24 /* 25 Note : this is stand-alone program. 26 It is not part of LZ4 compression library, it is a user code of the LZ4 library. 27 - The license of LZ4 library is BSD. 28 - The license of xxHash library is BSD. 29 - The license of this source file is GPLv2. 30 */ 31 32 33 /* ************************************************** */ 34 /* Special input/output values */ 35 /* ************************************************** */ 36 #define NULL_OUTPUT "null" 37 static char stdinmark[] = "stdin"; 38 static char stdoutmark[] = "stdout"; 39 #ifdef _WIN32 40 static char nulmark[] = "nul"; 41 #else 42 static char nulmark[] = "/dev/null"; 43 #endif 44 45 46 /* ************************************************** */ 47 /* ****************** Functions ********************* */ 48 /* ************************************************** */ 49 50 int LZ4IO_compressFilename (char* input_filename, char* output_filename, int compressionlevel); 51 int LZ4IO_decompressFilename(char* input_filename, char* output_filename); 52 53 54 /* ************************************************** */ 55 /* ****************** Parameters ******************** */ 56 /* ************************************************** */ 57 58 /* Default setting : overwrite = 1; 59 return : overwrite mode (0/1) */ 60 int LZ4IO_setOverwrite(int yes); 61 62 /* blockSizeID : valid values : 4-5-6-7 63 return : -1 if error, blockSize if OK */ 64 int LZ4IO_setBlockSizeID(int blockSizeID); 65 66 /* Default setting : independent blocks */ 67 typedef enum { LZ4IO_blockLinked=0, LZ4IO_blockIndependent} LZ4IO_blockMode_t; 68 int LZ4IO_setBlockMode(LZ4IO_blockMode_t blockMode); 69 70 /* Default setting : no checksum */ 71 int LZ4IO_setBlockChecksumMode(int xxhash); 72 73 /* Default setting : checksum enabled */ 74 int LZ4IO_setStreamChecksumMode(int xxhash); 75 76 /* Default setting : 0 (no notification) */ 77 int LZ4IO_setNotificationLevel(int level); 78