1/*
2 * Copyright (c) 2016-present, 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
17static 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
40static 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
51int 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