1*01826a49SYabin Cui /*
2*01826a49SYabin Cui * Copyright (c) Meta Platforms, Inc. and affiliates.
3*01826a49SYabin Cui * All rights reserved.
4*01826a49SYabin Cui *
5*01826a49SYabin Cui * This source code is licensed under both the BSD-style license (found in the
6*01826a49SYabin Cui * LICENSE file in the root directory of this source tree) and the GPLv2 (found
7*01826a49SYabin Cui * in the COPYING file in the root directory of this source tree).
8*01826a49SYabin Cui * You may select, at your option, one of the above-listed licenses.
9*01826a49SYabin Cui */
10*01826a49SYabin Cui
11*01826a49SYabin Cui #include <stdio.h> // printf
12*01826a49SYabin Cui #include <stdlib.h> // free
13*01826a49SYabin Cui #include <string.h> // strlen, strcat, memset
14*01826a49SYabin Cui #include <zstd.h> // presumes zstd library is installed
15*01826a49SYabin Cui #include "common.h" // Helper functions, CHECK(), and CHECK_ZSTD()
16*01826a49SYabin Cui
compress_orDie(const char * fname,const char * oname)17*01826a49SYabin Cui static void compress_orDie(const char* fname, const char* oname)
18*01826a49SYabin Cui {
19*01826a49SYabin Cui size_t fSize;
20*01826a49SYabin Cui void* const fBuff = mallocAndLoadFile_orDie(fname, &fSize);
21*01826a49SYabin Cui size_t const cBuffSize = ZSTD_compressBound(fSize);
22*01826a49SYabin Cui void* const cBuff = malloc_orDie(cBuffSize);
23*01826a49SYabin Cui
24*01826a49SYabin Cui /* Compress.
25*01826a49SYabin Cui * If you are doing many compressions, you may want to reuse the context.
26*01826a49SYabin Cui * See the multiple_simple_compression.c example.
27*01826a49SYabin Cui */
28*01826a49SYabin Cui size_t const cSize = ZSTD_compress(cBuff, cBuffSize, fBuff, fSize, 1);
29*01826a49SYabin Cui CHECK_ZSTD(cSize);
30*01826a49SYabin Cui
31*01826a49SYabin Cui saveFile_orDie(oname, cBuff, cSize);
32*01826a49SYabin Cui
33*01826a49SYabin Cui /* success */
34*01826a49SYabin Cui printf("%25s : %6u -> %7u - %s \n", fname, (unsigned)fSize, (unsigned)cSize, oname);
35*01826a49SYabin Cui
36*01826a49SYabin Cui free(fBuff);
37*01826a49SYabin Cui free(cBuff);
38*01826a49SYabin Cui }
39*01826a49SYabin Cui
createOutFilename_orDie(const char * filename)40*01826a49SYabin Cui static char* createOutFilename_orDie(const char* filename)
41*01826a49SYabin Cui {
42*01826a49SYabin Cui size_t const inL = strlen(filename);
43*01826a49SYabin Cui size_t const outL = inL + 5;
44*01826a49SYabin Cui void* const outSpace = malloc_orDie(outL);
45*01826a49SYabin Cui memset(outSpace, 0, outL);
46*01826a49SYabin Cui strcat(outSpace, filename);
47*01826a49SYabin Cui strcat(outSpace, ".zst");
48*01826a49SYabin Cui return (char*)outSpace;
49*01826a49SYabin Cui }
50*01826a49SYabin Cui
main(int argc,const char ** argv)51*01826a49SYabin Cui int main(int argc, const char** argv)
52*01826a49SYabin Cui {
53*01826a49SYabin Cui const char* const exeName = argv[0];
54*01826a49SYabin Cui
55*01826a49SYabin Cui if (argc!=2) {
56*01826a49SYabin Cui printf("wrong arguments\n");
57*01826a49SYabin Cui printf("usage:\n");
58*01826a49SYabin Cui printf("%s FILE\n", exeName);
59*01826a49SYabin Cui return 1;
60*01826a49SYabin Cui }
61*01826a49SYabin Cui
62*01826a49SYabin Cui const char* const inFilename = argv[1];
63*01826a49SYabin Cui
64*01826a49SYabin Cui char* const outFilename = createOutFilename_orDie(inFilename);
65*01826a49SYabin Cui compress_orDie(inFilename, outFilename);
66*01826a49SYabin Cui free(outFilename);
67*01826a49SYabin Cui return 0;
68*01826a49SYabin Cui }
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