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author | 2023-12-11 10:48:02 +1100 | |
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committer | 2023-12-11 10:48:02 +1100 | |
commit | 05e69b43e9770e16c4bf1c6ca3e585e64c3f6ff9 (patch) | |
tree | 00ff2118ddc01455ee55785283a2fcfb9bfaf77e /3rdparty/zstd/examples/simple_compression.c | |
parent | 1a4287925e3982e2f782dee6f62b198984b839de (diff) |
Added Zstandard support for zip archives and CHDs. (#11827)
* 3rdparty/zstd: Added Zstandard compression library version 1.5.5.
* util/unzip.cpp: Added support for Zstandard compression (method 93).
* util/chdcodec.cpp: Added support for Zstandard compression.
* 3rdparty/flac: Always define NDEBUG to avoid log spam.
Diffstat (limited to '3rdparty/zstd/examples/simple_compression.c')
-rw-r--r-- | 3rdparty/zstd/examples/simple_compression.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/3rdparty/zstd/examples/simple_compression.c b/3rdparty/zstd/examples/simple_compression.c new file mode 100644 index 00000000000..7c880725fc7 --- /dev/null +++ b/3rdparty/zstd/examples/simple_compression.c @@ -0,0 +1,68 @@ +/* + * Copyright (c) Meta Platforms, Inc. and affiliates. + * All rights reserved. + * + * This source code is licensed under both the BSD-style license (found in the + * LICENSE file in the root directory of this source tree) and the GPLv2 (found + * in the COPYING file in the root directory of this source tree). + * You may select, at your option, one of the above-listed licenses. + */ + +#include <stdio.h> // printf +#include <stdlib.h> // free +#include <string.h> // strlen, strcat, memset +#include <zstd.h> // presumes zstd library is installed +#include "common.h" // Helper functions, CHECK(), and CHECK_ZSTD() + +static void compress_orDie(const char* fname, const char* oname) +{ + size_t fSize; + void* const fBuff = mallocAndLoadFile_orDie(fname, &fSize); + size_t const cBuffSize = ZSTD_compressBound(fSize); + void* const cBuff = malloc_orDie(cBuffSize); + + /* Compress. + * If you are doing many compressions, you may want to reuse the context. + * See the multiple_simple_compression.c example. + */ + size_t const cSize = ZSTD_compress(cBuff, cBuffSize, fBuff, fSize, 1); + CHECK_ZSTD(cSize); + + saveFile_orDie(oname, cBuff, cSize); + + /* success */ + printf("%25s : %6u -> %7u - %s \n", fname, (unsigned)fSize, (unsigned)cSize, oname); + + free(fBuff); + free(cBuff); +} + +static char* createOutFilename_orDie(const char* filename) +{ + size_t const inL = strlen(filename); + size_t const outL = inL + 5; + void* const outSpace = malloc_orDie(outL); + memset(outSpace, 0, outL); + strcat(outSpace, filename); + strcat(outSpace, ".zst"); + return (char*)outSpace; +} + +int main(int argc, const char** argv) +{ + const char* const exeName = argv[0]; + + if (argc!=2) { + printf("wrong arguments\n"); + printf("usage:\n"); + printf("%s FILE\n", exeName); + return 1; + } + + const char* const inFilename = argv[1]; + + char* const outFilename = createOutFilename_orDie(inFilename); + compress_orDie(inFilename, outFilename); + free(outFilename); + return 0; +} |