1 /* 2 * Copyright (c) 2016-2020, Yann Collet, Facebook, Inc. 3 * All rights reserved. 4 * 5 * This source code is licensed under both the BSD-style license (found in the 6 * LICENSE file in the root directory of this source tree) and the GPLv2 (found 7 * in the COPYING file in the root directory of this source tree). 8 * You may select, at your option, one of the above-listed licenses. 9 */ 10 11 #include <stdio.h> // printf 12 #include <stdlib.h> // free 13 #include <string.h> // strlen, strcat, memset 14 #include <zstd.h> // presumes zstd library is installed 15 #include "common.h" // Helper functions, CHECK(), and CHECK_ZSTD() 16 17 static void compress_orDie(const char* fname, const char* oname) 18 { 19 size_t fSize; 20 void* const fBuff = mallocAndLoadFile_orDie(fname, &fSize); 21 size_t const cBuffSize = ZSTD_compressBound(fSize); 22 void* const cBuff = malloc_orDie(cBuffSize); 23 24 /* Compress. 25 * If you are doing many compressions, you may want to reuse the context. 26 * See the multiple_simple_compression.c example. 27 */ 28 size_t const cSize = ZSTD_compress(cBuff, cBuffSize, fBuff, fSize, 1); 29 CHECK_ZSTD(cSize); 30 31 saveFile_orDie(oname, cBuff, cSize); 32 33 /* success */ 34 printf("%25s : %6u -> %7u - %s \n", fname, (unsigned)fSize, (unsigned)cSize, oname); 35 36 free(fBuff); 37 free(cBuff); 38 } 39 40 static char* createOutFilename_orDie(const char* filename) 41 { 42 size_t const inL = strlen(filename); 43 size_t const outL = inL + 5; 44 void* const outSpace = malloc_orDie(outL); 45 memset(outSpace, 0, outL); 46 strcat(outSpace, filename); 47 strcat(outSpace, ".zst"); 48 return (char*)outSpace; 49 } 50 51 int main(int argc, const char** argv) 52 { 53 const char* const exeName = argv[0]; 54 55 if (argc!=2) { 56 printf("wrong arguments\n"); 57 printf("usage:\n"); 58 printf("%s FILE\n", exeName); 59 return 1; 60 } 61 62 const char* const inFilename = argv[1]; 63 64 char* const outFilename = createOutFilename_orDie(inFilename); 65 compress_orDie(inFilename, outFilename); 66 free(outFilename); 67 return 0; 68 } 69