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preset behavior for gzip, gunzip and gzcat

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when zstd is called through a link named gzip, gunzip or gzcat,
provides the same behavior as the related program.
gzip compresses using --format=gz
both gzip and gunzip enable --rm by default
This commit is contained in:
Yann Collet
2017-02-14 10:45:19 -08:00
parent aca067f19d
commit c09d16ba8c
2 changed files with 10 additions and 3 deletions
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8
programs/zstdcli.c
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@ -51,8 +51,11 @@
#define GZ_EXTENSION ".gz"
#define ZSTD_EXTENSION ".zst"
#define ZSTD_CAT "zstdcat"
#define ZSTD_UNZSTD "unzstd"
#define ZSTD_CAT "zstdcat"
#define ZSTD_GZ "gzip"
#define ZSTD_GUNZIP "gunzip"
#define ZSTD_GZCAT "gzcat"
#define KB *(1 <<10)
#define MB *(1 <<20)
@ -319,6 +322,9 @@ int main(int argCount, const char* argv[])
/* preset behaviors */
if (!strcmp(programName, ZSTD_UNZSTD)) operation=zom_decompress;
if (!strcmp(programName, ZSTD_CAT)) { operation=zom_decompress; forceStdout=1; FIO_overwriteMode(); outFileName=stdoutmark; displayLevel=1; }
if (!strcmp(programName, ZSTD_GZ)) { suffix = GZ_EXTENSION; FIO_setCompressionType(FIO_gzipCompression); FIO_setRemoveSrcFile(1); } /* behave like gzip */
if (!strcmp(programName, ZSTD_GUNZIP)) { operation=zom_decompress; FIO_setRemoveSrcFile(1); } /* behave like gunzip */
if (!strcmp(programName, ZSTD_GZCAT)) { operation=zom_decompress; forceStdout=1; FIO_overwriteMode(); outFileName=stdoutmark; displayLevel=1; } /* behave like gzcat */
memset(&compressionParams, 0, sizeof(compressionParams));
/* command switches */