diff --git a/programs/zstd.1.md b/programs/zstd.1.md index c5d0ef70a..646e3cf28 100644 --- a/programs/zstd.1.md +++ b/programs/zstd.1.md @@ -225,15 +225,17 @@ the last one takes effect. This parameter defines a loose target: compressed blocks will target this size "on average", but individual blocks can still be larger or smaller. Enabling this feature can decrease compression speed by up to ~10% at level 1. Higher levels will see smaller relative speed regression, becoming invisible at higher settings. -* `-o FILE`: - save result into `FILE`. * `-f`, `--force`: disable input and output checks. Allows overwriting existing files, input from console, output to stdout, operating on links, block devices, etc. During decompression and when the output destination is stdout, pass-through unrecognized formats as-is. * `-c`, `--stdout`: - write to standard output (even if it is the console); keep original files unchanged. + write to standard output (even if it is the console); keep original files (disable `--rm`). +* `-o FILE`: + save result into `FILE`. + Note that this operation is in conflict with `-c`. + If both operations are present on the command line, the last expressed one wins. * `--[no-]sparse`: enable / disable sparse FS support, to make files with many zeroes smaller on disk. diff --git a/programs/zstdcli.c b/programs/zstdcli.c index 1cb16ef50..9dd6b051a 100644 --- a/programs/zstdcli.c +++ b/programs/zstdcli.c @@ -962,7 +962,7 @@ int main(int argCount, const char* argv[]) if (!strcmp(argument, "--help")) { usageAdvanced(programName); CLEAN_RETURN(0); } if (!strcmp(argument, "--verbose")) { g_displayLevel++; continue; } if (!strcmp(argument, "--quiet")) { g_displayLevel--; continue; } - if (!strcmp(argument, "--stdout")) { forceStdout=1; outFileName=stdoutmark; removeSrcFile=0; continue; } + if (!strcmp(argument, "--stdout")) { forceStdout=1; outFileName=stdoutmark; continue; } if (!strcmp(argument, "--ultra")) { ultra=1; continue; } if (!strcmp(argument, "--check")) { FIO_setChecksumFlag(prefs, 2); continue; } if (!strcmp(argument, "--no-check")) { FIO_setChecksumFlag(prefs, 0); continue; } @@ -1176,7 +1176,10 @@ int main(int argCount, const char* argv[]) operation=zom_decompress; argument++; break; /* Force stdout, even if stdout==console */ - case 'c': forceStdout=1; outFileName=stdoutmark; removeSrcFile=0; argument++; break; + case 'c': forceStdout=1; outFileName=stdoutmark; argument++; break; + + /* destination file name */ + case 'o': argument++; NEXT_FIELD(outFileName); break; /* do not store filename - gzip compatibility - nothing to do */ case 'n': argument++; break; @@ -1202,9 +1205,6 @@ int main(int argCount, const char* argv[]) /* test compressed file */ case 't': operation=zom_test; argument++; break; - /* destination file name */ - case 'o': argument++; NEXT_FIELD(outFileName); break; - /* limit memory */ case 'M': argument++; diff --git a/tests/playTests.sh b/tests/playTests.sh index 2c9f791f9..a79c06c99 100755 --- a/tests/playTests.sh +++ b/tests/playTests.sh @@ -234,12 +234,23 @@ unset ZSTD_CLEVEL println "test : compress to stdout" zstd tmp -c > tmpCompressed zstd tmp --stdout > tmpCompressed # long command format -println "test : compress to named file" + +println "test : compress to named file (-o)" rm -f tmpCompressed zstd tmp -o tmpCompressed test -f tmpCompressed # file must be created + println "test : force write, correct order" zstd tmp -fo tmpCompressed + +println "test : -c + -o : last one wins" +rm -f tmpOut +zstd tmp -c > tmpCompressed -o tmpOut +test -f tmpOut # file must be created +rm -f tmpCompressed +zstd tmp -o tmpOut -c > tmpCompressed +test -f tmpCompressed # file must be created + println "test : forgotten argument" cp tmp tmp2 zstd tmp2 -fo && die "-o must be followed by filename " @@ -439,6 +450,8 @@ println "test: --rm is disabled when output is stdout" test -f tmp zstd --rm tmp -c > $INTOVOID test -f tmp # tmp shall still be there +zstd --rm tmp --stdout > $INTOVOID +test -f tmp # tmp shall still be there zstd -f --rm tmp -c > $INTOVOID test -f tmp # tmp shall still be there zstd -f tmp -c > $INTOVOID --rm @@ -456,7 +469,22 @@ zstd -f tmp tmp2 -o tmp3.zst --rm # just warns, no prompt test -f tmp test -f tmp2 zstd -q tmp tmp2 -o tmp3.zst --rm && die "should refuse to concatenate" - +println "test: --rm is active with -o when single input" +rm -f tmp2.zst +zstd --rm tmp2 -o tmp2.zst +test -f tmp2.zst +test ! -f tmp2 +println "test: -c followed by -o => -o wins, so --rm remains active" # (#3719) +rm tmp2.zst +cp tmp tmp2 +zstd --rm tmp2 -c > $INTOVOID -o tmp2.zst +test ! -f tmp2 +println "test: -o followed by -c => -c wins, so --rm is disabled" # (#3719) +rm tmp3.zst +cp tmp tmp2 +zstd -v --rm tmp2 -o tmp2.zst -c > tmp3.zst +test -f tmp2 +test -f tmp3.zst println "test : should quietly not remove non-regular file" println hello > tmp zstd tmp -f -o "$DEVDEVICE" 2>tmplog > "$INTOVOID"