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| author | Takayuki MATSUOKA <takayuki.matsuoka@gmail.com> | 2015-02-12 06:46:02 (GMT) |
|---|---|---|
| committer | Takayuki MATSUOKA <takayuki.matsuoka@gmail.com> | 2015-03-02 04:38:23 (GMT) |
| commit | 97679fa5a17d79f87c0a2d1e2d44c3215d48958b (patch) | |
| tree | 9d9db433095cf72cc1de2c7d2a8914e2b59078cc /programs/lz4io.h | |
| parent | 67f3b4141af0a33e9590e4678f06724076b7b69e (diff) | |
| download | lz4-97679fa5a17d79f87c0a2d1e2d44c3215d48958b.zip lz4-97679fa5a17d79f87c0a2d1e2d44c3215d48958b.tar.gz lz4-97679fa5a17d79f87c0a2d1e2d44c3215d48958b.tar.bz2 | |
Google Code Issue 155: lz4 cli should support sparse file
https://code.google.com/p/lz4/issues/detail?id=155
This is experimental implementation. Just a proof of concept.
It works Linux and Windows.
# Build
To build experimental version, define 'LZ4IO_ENABLE_SPARSE_FILE' like the following command :
make lz4programs 'CFLAGS=-O3 -DLZ4IO_ENABLE_SPARSE_FILE=1'
./programs/lz4 -h
You will see "EXPERIMENTAL_SPARSE_FILE" as lz4 revision :
"*** LZ4 command line interface 64-bits EXPERIMENTAL_SPARSE_FILE, by Yann Collet (...) ***"
# Experiment
This experimental version adds option "-x" for sparse file for decompression.
You can use this option like this :
./programs/lz4 -9 -f my-file
./programs/lz4 -d -f -x my-file.lz4 my-file.lz4.out
cmp my-file my-file.lz4.out
Diffstat (limited to 'programs/lz4io.h')
| -rw-r--r-- | programs/lz4io.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/programs/lz4io.h b/programs/lz4io.h index 7869a43..a0c6119 100644 --- a/programs/lz4io.h +++ b/programs/lz4io.h @@ -75,3 +75,8 @@ int LZ4IO_setStreamChecksumMode(int xxhash); /* Default setting : 0 (no notification) */ int LZ4IO_setNotificationLevel(int level); + +#if defined(LZ4IO_ENABLE_SPARSE_FILE) +/* Default setting : 0 (sparseFile = 0; disable sparse file) */ +int LZ4IO_setSparseFile(int yes); +#endif |