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2022-11-11Scripts: Ignore warnings from xz.Lasse Collin1-2/+3
In practice this means making the scripts work when the input files have an unsupported check type which isn't a problem in practice unless support for some check types has been disabled at build time.
2022-07-24Scripts: Use printf instead of echo in a few places.Lasse Collin1-3/+3
It's a good habbit as echo has some portability corner cases when the string contents can be anything.
2022-07-12Scripts: Add zstd support to xzdiff.Lasse Collin1-5/+11
2022-07-12Scripts: Fix exit status of xzdiff/xzcmp.Lasse Collin1-14/+21
This is a minor fix since this affects only the situation when the files differ and the exit status is something else than 0. In such case there could be SIGPIPE from a decompression tool and that would result in exit status of 2 from xzdiff/xzcmp while the correct behavior would be to return 1 or whatever else diff or cmp may have returned. This commit omits the -q option from xz/gzip/bzip2/lzop arguments. I'm not sure why the -q was used in the first place, perhaps it hides warnings in some situation that I cannot see at the moment. Hopefully the removal won't introduce a new bug. With gzip the -q option was harmful because it made gzip return 2 instead of >= 128 with SIGPIPE. Ignoring exit status 2 (warning from gzip) isn't practical because bzip2 uses exit status 2 to indicate corrupt input file. It's better if SIGPIPE results in exit status >= 128. With bzip2 the removal of -q seems to be good because with -q it prints nothing if input is corrupt. The other tools aren't silent in this situation even with -q. On the other hand, if zstd support is added, it will need -q since otherwise it's noisy in normal situations. Thanks to Étienne Mollier and Sebastian Andrzej Siewior.
2019-12-31Scripts: Put /usr/xpg4/bin to the beginning of PATH on Solaris.Lasse Collin1-0/+1
This adds a configure option --enable-path-for-scripts=PREFIX which defaults to empty except on Solaris it is /usr/xpg4/bin to make POSIX grep and others available. The Solaris case had been documented in INSTALL with a manual fix but it's better to do this automatically since it is needed on most Solaris systems anyway. Thanks to Daniel Richard G.
2015-02-09xzdiff: Make the mktemp usage compatible with FreeBSD's mktemp.Lasse Collin1-1/+6
Thanks to Rui Paulo for the fix.
2014-11-10xzdiff: Use mkdir if mktemp isn't available.Lasse Collin1-1/+16
2014-11-10xzdiff: Create a temporary directory to hold a temporary file.Lasse Collin1-5/+5
This avoids the possibility of "File name too long" when creating a temp file when the input file name is very long. This also means that other users on the system can no longer see the input file names in /tmp (or whatever $TMPDIR is) since the temporary directory will have a generic name. This usually doesn't matter since on many systems one can see the arguments given to all processes anyway. The number X chars to mktemp where increased from 6 to 10. Note that with some shells temp files or dirs won't be used at all.
2011-07-31Fix exit status of "xzdiff foo.xz bar.xz".Lasse Collin1-0/+2
xzdiff was clobbering the exit status from diff in a case statement used to analyze the exit statuses from "xz" when its operands were two compressed files. Save and restore diff's exit status to fix this. The bug is inherited from zdiff in GNU gzip and was fixed there on 2009-10-09. Thanks to Jonathan Nieder for the patch and to Peter Pallinger for reporting the bug.
2011-03-19Scripts: Add lzop (.lzo) support to xzdiff and xzgrep.Lasse Collin1-8/+14
2010-12-13Scripts: Fix gzip and bzip2 support in xzdiff.Lasse Collin1-6/+6
2009-08-09“xzdiff a.xz b.xz” always failsJonathan Nieder1-1/+1
Attempts to compare two compressed files result in no output and exit status 2. Instead of going to standard output, ‘diff’ output is being captured in the xz_status variable along with the exit status from the decompression commands. Later, when this variable is examined for nonzero status codes, numerals from dates in the ‘diff’ output make it appear as though decompression failed. So let the ‘diff’ output leak to standard output with another file descriptor. (This trick is used in all similar contexts elsewhere in xzdiff and in the analogous context in gzip’s zdiff script.)
2009-07-30xzdiff: add missing ;; to case statementJonathan Nieder1-3/+3
2009-07-05Major update to the xzgrep and other scripts based onLasse Collin1-0/+172
the latest versions found from gzip CVS repository. configure will try to find a POSIX shell to be used by the scripts. This should ease portability on systems which have pre-POSIX /bin/sh. xzgrep and xzdiff support .xz, .lzma, .gz, and .bz2 files. xzmore and xzless support only .xz and .lzma files. The name of the xz executable used in these scripts is now correct even if --program-transform-name has been used.