1 /*
2 * Copyright (c) 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
compress_orDie(const char * fname,const char * oname)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
createOutFilename_orDie(const char * filename)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
main(int argc,const char ** argv)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