Commit Graph

977 Commits

Author SHA1 Message Date
Lasse Collin 77fe5954cd liblzma: Adjust default depth calculation for HC3 and HC4.
It was 8 + nice_len / 4, now it is 4 + nice_len / 4.
This allows faster settings at lower nice_len values,
even though it seems that I won't use automatic depth
calcuation with HC3 and HC4 in the presets.
2010-09-03 12:28:41 +03:00
Lasse Collin fce69059cf xz: Make --help two lines shorter.
At least for now, the --help option doesn't list any
options that take arguments, so "Mandatory arguments to..."
can be omitted.
2010-09-03 11:11:25 +03:00
Lasse Collin a848e47ced xz: Make setting a preset override a custom filter chain.
This is more logical behavior than ignoring preset level
options once a custom filter chain has been specified.
2010-09-02 19:22:35 +03:00
Lasse Collin b3ff7ba044 xz: Always warn if adjusting dictionary size due to memlimit. 2010-09-02 19:09:57 +03:00
Lasse Collin d5653ba8a1 Fix test_compress.sh.
It broke when --memory option was removed from xzdec.

Thanks to Jonathan Nieder.
2010-08-10 11:04:30 +03:00
Lasse Collin 792331bdee Disable the memory usage limiter by default.
For several people, the limiter causes bigger problems that
it solves, so it is better to have it disabled by default.
Those who want to have a limiter by default need to enable
it via the environment variable XZ_DEFAULTS.

Support for environment variable XZ_DEFAULTS was added. It is
parsed before XZ_OPT and technically identical with it. The
intended uses differ quite a bit though; see the man page.

The memory usage limit can now be set separately for
compression and decompression using --memlimit-compress and
--memlimit-decompress. To set both at once, -M or --memlimit
can be used. --memory was retained as a legacy alias for
--memlimit for backwards compatibility.

The semantics of --info-memory were changed in backwards
incompatible way. Compatibility wasn't meaningful due to
changes in the memory usage limiter functionality.

The memory usage limiter info is no longer shown at the
bottom of xz --long -help.

The memory usage limiter support for removed completely from xzdec.

xz's man page was updated to match the above changes. Various
unrelated fixes were also made to the man page.
2010-08-07 20:45:18 +03:00
Lasse Collin 4a45dd4c39 Add missing const to a global constant in xz. 2010-08-06 20:22:16 +03:00
Lasse Collin 01aa4869cb Language fixes for man pages.
Thanks to A. Costa and Jonathan Nieder.
2010-07-28 11:44:55 +03:00
Lasse Collin ce1f0deafe Windows: Add a note about building a Git repository snapshot 2010-07-27 20:47:12 +03:00
Lasse Collin 507a4a4dea Windows: build.sh is a bash script so name it correctly. 2010-07-27 20:45:03 +03:00
Lasse Collin b1cbfd40f0 Windows: Don't strip liblzma.a too much. 2010-07-27 20:27:32 +03:00
Lasse Collin a540198ffb Updated THANKS. 2010-07-13 20:07:26 +03:00
Lasse Collin bab0f01ed9 Add two simple example programs.
Hopefully these help a bit when learning the basics
of liblzma API. I plan to write detailed examples about
both basic and advanced features with lots of comments,
but these two examples are good have right now.

The examples were written by Daniel Mealha Cabrita. Thanks.
2010-07-13 19:55:50 +03:00
Lasse Collin c15c42abb3 Add --no-adjust. 2010-06-15 14:06:29 +03:00
Lasse Collin 2130926dd1 Updated THANKS. 2010-06-11 21:51:32 +03:00
Lasse Collin bc612d0e0c Clarify the description of the default memlimit in the man page.
Thanks to Denis Excoffier.
2010-06-11 21:48:32 +03:00
Lasse Collin e1b6935d60 Fix string to uint64_t conversion.
Thanks to Denis Excoffier for the bug report.
2010-06-11 21:43:28 +03:00
Lasse Collin 3e49c8acb0 Put the git commit to the filename in mydist rule. 2010-06-11 10:40:28 +03:00
Lasse Collin d8b41eedce Fix compiling with -Werror. 2010-06-02 23:13:55 +03:00
Lasse Collin b5fbab6123 Silence a bogus Valgrind warning.
When using -O2 with GCC, it liked to swap two comparisons
in one "if" statement. It's otherwise fine except that
the latter part, which is seemingly never executed, got
executed (nothing wrong with that) and then triggered
warning in Valgrind about conditional jump depending on
uninitialized variable. A few people find this annoying
so do things a bit differently to avoid the warning.
2010-06-02 23:09:22 +03:00
Lasse Collin 29a7b250e6 Fix a Windows-specific FIXME in signal handling code. 2010-06-02 21:32:12 +03:00
Lasse Collin e89d987056 Adjust SA_RESTART workaround.
I want to get a bug report if something else than
DJGPP lacks SA_RESTART.
2010-06-02 17:46:58 +03:00
Lasse Collin e243145c84 xz man page updates.
- Concatenating .xz files and padding
- List mode
- Robot mode
- A few examples (but many more are needed)
2010-06-01 16:02:30 +03:00
Lasse Collin ce6dc3c0a8 Major update to xz --list. 2010-06-01 15:51:44 +03:00
Lasse Collin 905e54804a Rename message_filters_get() to message_filters_to_str(). 2010-06-01 14:13:03 +03:00
Lasse Collin 4b346ae8af Fix a comment. 2010-06-01 14:09:12 +03:00
Lasse Collin 07dc34f6da Fix lzma_block_compressed_size(). 2010-05-27 16:17:42 +03:00
Lasse Collin 44d70cb154 Take Cygwin into account in some #if lines.
This change is no-op, but good to have just in case
for the future.
2010-05-27 14:32:51 +03:00
Lasse Collin a334348dc0 Remove references to the Subblock filter in xz and tests.
Thanks to Jonathan Nieder.
2010-05-27 13:42:44 +03:00
Lasse Collin 70e5e2f6a7 Remove unused chunk_size.c.
Thanks to Jonathan Nieder for the reminder.
2010-05-27 13:35:36 +03:00
Jonathan Nieder 01a414eaf4 Use my_min() instead of MIN() in src/xz/list.c
This should have been done in
920a69a8d8.
2010-05-27 13:30:48 +03:00
Lasse Collin 920a69a8d8 Rename MIN() and MAX() to my_min() and my_max().
This should avoid some minor portability issues.
2010-05-26 10:36:46 +03:00
Lasse Collin 019ae27c24 Fix compilation of debug/known_sizes.c. 2010-05-26 10:30:20 +03:00
Lasse Collin 98a4856a6e Remove references to Subblock filter in debug/sync_flush.c. 2010-05-26 10:28:54 +03:00
Lasse Collin 703d2c33c0 Better #error message. 2010-05-26 10:16:57 +03:00
Lasse Collin d8a55c48b3 Remove the Subblock filter code for now.
The spec isn't finished and the code didn't compile anymore.
It won't be included in XZ Utils 5.0.0. It's easy to get it
back once the spec is done.
2010-05-26 09:55:47 +03:00
Lasse Collin b6377fc990 Split message_filters().
message_filters_to_str() converts the filter chain to
a string. message_filters_show() replaces the original
message_filters().

uint32_to_optstr() was also added to show the dictionary
size in nicer format when possible.
2010-05-16 18:42:22 +03:00
Lasse Collin d9986db782 Omit lzma_restrict from the API headers.
It isn't really useful so omitting it makes things
shorter and slightly more readable.
2010-05-14 23:17:20 +03:00
Lasse Collin 0d3489efca Updated INSTALL. 2010-05-10 19:57:24 +03:00
Lasse Collin 3fb3d594a2 Updated THANKS. 2010-05-10 19:54:52 +03:00
Lasse Collin 6548e30465 Updates to tuklib_physmem and tuklib_cpucores.
Don't use #error to generate compile error, because some
compilers actually don't take it as an error. This fixes
tuklib_physmem on IRIX.

Fix incorrect error check for sysconf() return values.

Add AIX, HP-UX, and Tru64 specific code to detect the
amount RAM.

Add HP-UX specific code to detect the number of CPU cores.

Thanks a lot to Peter O'Gorman for initial patches,
testing, and debugging these fixes.
2010-05-10 19:54:15 +03:00
Lasse Collin a290cfee3e Show both elapsed time and estimated remaining time in xz -v.
The extra space for showing both has been taken from the
sizes field. If the sizes grow big, bigger units than MiB
will be used. It makes it slightly difficult to see that
progress is still happening with huge files, but it should
be OK in practice.

Thanks to Trent W. Buck for <http://bugs.debian.org/574583>
and Jonathan Nieder for suggestions how to fix it.
2010-04-12 21:55:56 +03:00
Lasse Collin a1f7a986b8 Add a simple tip to faq.txt about tar and xz.
Thanks to Gilles Espinasse.
2010-03-31 16:47:25 +03:00
Lasse Collin c737eec91d Updated THANKS. 2010-03-22 21:03:03 +02:00
Lasse Collin f4b2b52624 Fix xzgrep to not break if filenames have spaces or quotes.
Thanks to someone who reported the bug on IRC.
2010-03-07 19:52:25 +02:00
Lasse Collin cf38da00a1 Treat all integer multiplier suffixes as base-2.
Originally both base-2 and base-10 were supported, but since
there seems to be little need for base-10 in XZ Utils, treat
everything as base-2 and also be more relaxed about the case
of the first letter of the suffix. Now xz will accept e.g.
KiB, Ki, k, K, kB, and KB, and interpret them all as 1024. The
recommended spelling of the suffixes are still KiB, MiB, and GiB.
2010-03-07 13:59:32 +02:00
Lasse Collin 00fc1211ae Consistently round up the memory usage limit in messages.
It still feels a bit wrong to round 1 byte to 1 MiB but
at least it is now done consistently so that the same
byte value is always rounded the same way to MiB.
2010-03-07 13:50:23 +02:00
Lasse Collin 9886d436ff Change the default of --enable-assume-ram from 32 to 128 MiB.
This is to allow files created with "xz -9" to be decompressed
if the amount of RAM cannot be determined.
2010-03-07 13:34:34 +02:00
Lasse Collin 2672bcc9f8 Increase the default memory usage limit on "low-memory" systems.
Previously the default limit was always 40 % of RAM. The
new limit is a little bit more complex:

  - If 40 % of RAM is at least 80 MiB, 40 % of RAM is used
    as the limit.

  - If 80 % of RAM is over 80 MiB, 80 MiB is used as the limit.

  - Otherwise 80 % of RAM is used as the limit.

This should make it possible to decompress files created with
"xz -9" on more systems. Swapping is generally more expected
on systems with less RAM, so higher default limit on them
shouldn't cause too bad surprises in terms of heavy swapping.
Instead, the higher default limit should reduce the number of
bad surprises when it used to prevent decompression of files
created with "xz -9". The DoS prevention system shouldn't be
a DoS itself.

Note that even with the new default limit, a system with 64 MiB
RAM cannot decompress files created with "xz -9" without user
overriding the limit. This should be OK, because if xz is going
to need more memory than the system has RAM, it will run very
very slowly and thus it's good that user has to override the limit
in that case.
2010-03-07 13:29:28 +02:00
Lasse Collin 5527b7269a Updated THANKS. 2010-03-06 21:36:19 +02:00