xref: /freebsd/sys/contrib/zstd/examples/README.md (revision af23369a6deaaeb612ab266eb88b8bb8d560c322)
1Zstandard library : usage examples
2==================================
3
4- [Simple compression](simple_compression.c) :
5  Compress a single file.
6  Introduces usage of : `ZSTD_compress()`
7
8- [Simple decompression](simple_decompression.c) :
9  Decompress a single file.
10  Only compatible with simple compression.
11  Result remains in memory.
12  Introduces usage of : `ZSTD_decompress()`
13
14- [Multiple simple compression](multiple_simple_compression.c) :
15  Compress multiple files (in simple mode) in a single command line.
16  Demonstrates memory preservation technique that
17  minimizes malloc()/free() calls by re-using existing resources.
18  Introduces usage of : `ZSTD_compressCCtx()`
19
20- [Streaming memory usage](streaming_memory_usage.c) :
21  Provides amount of memory used by streaming context.
22  Introduces usage of : `ZSTD_sizeof_CStream()`
23
24- [Streaming compression](streaming_compression.c) :
25  Compress a single file.
26  Introduces usage of : `ZSTD_compressStream()`
27
28- [Multiple Streaming compression](multiple_streaming_compression.c) :
29  Compress multiple files (in streaming mode) in a single command line.
30  Introduces memory usage preservation technique,
31  reducing impact of malloc()/free() and memset() by re-using existing resources.
32
33- [Streaming decompression](streaming_decompression.c) :
34  Decompress a single file compressed by zstd.
35  Compatible with both simple and streaming compression.
36  Result is sent to stdout.
37  Introduces usage of : `ZSTD_decompressStream()`
38
39- [Dictionary compression](dictionary_compression.c) :
40  Compress multiple files using the same dictionary.
41  Introduces usage of : `ZSTD_createCDict()` and `ZSTD_compress_usingCDict()`
42
43- [Dictionary decompression](dictionary_decompression.c) :
44  Decompress multiple files using the same dictionary.
45  Result remains in memory.
46  Introduces usage of : `ZSTD_createDDict()` and `ZSTD_decompress_usingDDict()`
47