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Added the debug directory and the first debug tool

(sync_flush). These tools are not built unless the
user runs "make" in the debug directory.
This commit is contained in:
Lasse Collin 2008-01-18 20:18:08 +02:00
parent 0ae3208db9
commit 61dc82f3e3
5 changed files with 165 additions and 0 deletions

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@ -12,6 +12,7 @@
## Lesser General Public License for more details. ## Lesser General Public License for more details.
## ##
DIST_SUBDIRS = lib src po tests debug
SUBDIRS = SUBDIRS =
if COND_GNULIB if COND_GNULIB

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@ -646,6 +646,7 @@ AC_CONFIG_FILES([
src/lzmadec/Makefile src/lzmadec/Makefile
src/scripts/Makefile src/scripts/Makefile
tests/Makefile tests/Makefile
debug/Makefile
]) ])
AC_OUTPUT AC_OUTPUT

30
debug/Makefile.am Normal file
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@ -0,0 +1,30 @@
##
## Copyright (C) 2008 Lasse Collin
##
## This library is free software; you can redistribute it and/or
## modify it under the terms of the GNU Lesser General Public
## License as published by the Free Software Foundation; either
## version 2.1 of the License, or (at your option) any later version.
##
## This library is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## Lesser General Public License for more details.
##
noinst_PROGRAMS = \
sync_flush
AM_CPPFLAGS = \
-I@top_srcdir@/src/common \
-I@top_srcdir@/src/liblzma/api
AM_LDFLAGS = -static
LDADD = \
@top_builddir@/src/liblzma/liblzma.la \
@LTLIBINTL@
if COND_GNULIB
LDADD += @top_builddir@/lib/libgnu.a
endif

17
debug/README Normal file
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@ -0,0 +1,17 @@
Debug tools
-----------
This directory contains a few tiny programs that may be helpful when
debugging LZMA Utils.
These tools are not meant to be installed. Often one needs to edit
the source code a little to make the programs do the wanted things.
If you don't know how these programs could help you, it is likely
that they really are useless to you.
These aren't intended to be used as example programs. They take some
shortcuts here and there, which correct programs should not do. Many
possible errors (especially I/O errors) are ignored. Don't report
bugs or send patches to fix this kind of bugs.

116
debug/sync_flush.c Normal file
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@ -0,0 +1,116 @@
///////////////////////////////////////////////////////////////////////////////
//
/// \file sync_flush.c
/// \brief Encode files using LZMA_SYNC_FLUSH
//
// Copyright (C) 2008 Lasse Collin
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
///////////////////////////////////////////////////////////////////////////////
#include "sysdefs.h"
#include <stdio.h>
static lzma_stream strm = LZMA_STREAM_INIT;
static FILE *file_in;
static void
encode(size_t size, lzma_action action)
{
static const size_t CHUNK = 64;
uint8_t in[CHUNK];
uint8_t out[CHUNK];
lzma_ret ret;
do {
if (strm.avail_in == 0 && size > 0) {
const size_t amount = MIN(size, CHUNK);
strm.avail_in = fread(in, 1, amount, file_in);
strm.next_in = in;
size -= amount; // Intentionally not using avail_in.
}
strm.next_out = out;
strm.avail_out = CHUNK;
ret = lzma_code(&strm, size == 0 ? action : LZMA_RUN);
if (ret != LZMA_OK && ret != LZMA_STREAM_END) {
fprintf(stderr, "%s:%u: %s: ret == %d\n",
__FILE__, __LINE__, __func__, ret);
exit(1);
}
fwrite(out, 1, CHUNK - strm.avail_out, stdout);
} while (size > 0 || strm.avail_out == 0);
if ((action == LZMA_RUN && ret != LZMA_OK)
|| (action != LZMA_RUN && ret != LZMA_STREAM_END)) {
fprintf(stderr, "%s:%u: %s: ret == %d\n",
__FILE__, __LINE__, __func__, ret);
exit(1);
}
}
int
main(int argc, char **argv)
{
lzma_init_encoder();
file_in = argc > 1 ? fopen(argv[1], "rb") : stdin;
// Config
lzma_options_lzma opt_lzma = {
.dictionary_size = 1 << 16,
.literal_context_bits = LZMA_LITERAL_CONTEXT_BITS_DEFAULT,
.literal_pos_bits = LZMA_LITERAL_POS_BITS_DEFAULT,
.pos_bits = LZMA_POS_BITS_DEFAULT,
.preset_dictionary = NULL,
.mode = LZMA_MODE_BEST,
.fast_bytes = 32,
.match_finder = LZMA_MF_BT3,
.match_finder_cycles = 0,
};
lzma_options_stream opt_stream = {
.check = LZMA_CHECK_NONE,
.has_crc32 = false,
.uncompressed_size = LZMA_VLI_VALUE_UNKNOWN,
.alignment = 0,
};
opt_stream.filters[0].id = LZMA_FILTER_LZMA;
opt_stream.filters[0].options = &opt_lzma;
opt_stream.filters[1].id = LZMA_VLI_VALUE_UNKNOWN;
// Init
if (lzma_stream_encoder_single(&strm, &opt_stream) != LZMA_OK) {
fprintf(stderr, "init failed\n");
exit(1);
}
// Encoding
encode(0, LZMA_SYNC_FLUSH);
encode(6, LZMA_SYNC_FLUSH);
encode(0, LZMA_SYNC_FLUSH);
encode(6, LZMA_SYNC_FLUSH);
encode(0, LZMA_SYNC_FLUSH);
encode(0, LZMA_FINISH);
// Clean up
lzma_end(&strm);
return 0;
}