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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.
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5 changed files with 165 additions and 0 deletions
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@ -12,6 +12,7 @@
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## Lesser General Public License for more details.
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##
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DIST_SUBDIRS = lib src po tests debug
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SUBDIRS =
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if COND_GNULIB
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@ -646,6 +646,7 @@ AC_CONFIG_FILES([
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src/lzmadec/Makefile
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src/scripts/Makefile
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tests/Makefile
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debug/Makefile
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])
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AC_OUTPUT
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30
debug/Makefile.am
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30
debug/Makefile.am
Normal file
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##
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## Copyright (C) 2008 Lasse Collin
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##
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## This library is free software; you can redistribute it and/or
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## modify it under the terms of the GNU Lesser General Public
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## License as published by the Free Software Foundation; either
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## version 2.1 of the License, or (at your option) any later version.
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##
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## This library is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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## Lesser General Public License for more details.
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##
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noinst_PROGRAMS = \
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sync_flush
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AM_CPPFLAGS = \
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-I@top_srcdir@/src/common \
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-I@top_srcdir@/src/liblzma/api
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AM_LDFLAGS = -static
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LDADD = \
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@top_builddir@/src/liblzma/liblzma.la \
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@LTLIBINTL@
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if COND_GNULIB
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LDADD += @top_builddir@/lib/libgnu.a
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endif
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17
debug/README
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17
debug/README
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@ -0,0 +1,17 @@
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Debug tools
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-----------
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This directory contains a few tiny programs that may be helpful when
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debugging LZMA Utils.
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These tools are not meant to be installed. Often one needs to edit
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the source code a little to make the programs do the wanted things.
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If you don't know how these programs could help you, it is likely
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that they really are useless to you.
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These aren't intended to be used as example programs. They take some
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shortcuts here and there, which correct programs should not do. Many
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possible errors (especially I/O errors) are ignored. Don't report
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bugs or send patches to fix this kind of bugs.
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116
debug/sync_flush.c
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116
debug/sync_flush.c
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///////////////////////////////////////////////////////////////////////////////
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//
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/// \file sync_flush.c
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/// \brief Encode files using LZMA_SYNC_FLUSH
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//
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// Copyright (C) 2008 Lasse Collin
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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///////////////////////////////////////////////////////////////////////////////
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#include "sysdefs.h"
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#include <stdio.h>
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static lzma_stream strm = LZMA_STREAM_INIT;
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static FILE *file_in;
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static void
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encode(size_t size, lzma_action action)
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{
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static const size_t CHUNK = 64;
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uint8_t in[CHUNK];
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uint8_t out[CHUNK];
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lzma_ret ret;
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do {
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if (strm.avail_in == 0 && size > 0) {
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const size_t amount = MIN(size, CHUNK);
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strm.avail_in = fread(in, 1, amount, file_in);
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strm.next_in = in;
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size -= amount; // Intentionally not using avail_in.
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}
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strm.next_out = out;
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strm.avail_out = CHUNK;
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ret = lzma_code(&strm, size == 0 ? action : LZMA_RUN);
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if (ret != LZMA_OK && ret != LZMA_STREAM_END) {
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fprintf(stderr, "%s:%u: %s: ret == %d\n",
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__FILE__, __LINE__, __func__, ret);
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exit(1);
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}
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fwrite(out, 1, CHUNK - strm.avail_out, stdout);
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} while (size > 0 || strm.avail_out == 0);
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if ((action == LZMA_RUN && ret != LZMA_OK)
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|| (action != LZMA_RUN && ret != LZMA_STREAM_END)) {
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fprintf(stderr, "%s:%u: %s: ret == %d\n",
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__FILE__, __LINE__, __func__, ret);
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exit(1);
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}
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}
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int
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main(int argc, char **argv)
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{
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lzma_init_encoder();
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file_in = argc > 1 ? fopen(argv[1], "rb") : stdin;
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// Config
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lzma_options_lzma opt_lzma = {
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.dictionary_size = 1 << 16,
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.literal_context_bits = LZMA_LITERAL_CONTEXT_BITS_DEFAULT,
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.literal_pos_bits = LZMA_LITERAL_POS_BITS_DEFAULT,
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.pos_bits = LZMA_POS_BITS_DEFAULT,
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.preset_dictionary = NULL,
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.mode = LZMA_MODE_BEST,
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.fast_bytes = 32,
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.match_finder = LZMA_MF_BT3,
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.match_finder_cycles = 0,
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};
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lzma_options_stream opt_stream = {
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.check = LZMA_CHECK_NONE,
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.has_crc32 = false,
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.uncompressed_size = LZMA_VLI_VALUE_UNKNOWN,
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.alignment = 0,
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};
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opt_stream.filters[0].id = LZMA_FILTER_LZMA;
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opt_stream.filters[0].options = &opt_lzma;
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opt_stream.filters[1].id = LZMA_VLI_VALUE_UNKNOWN;
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// Init
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if (lzma_stream_encoder_single(&strm, &opt_stream) != LZMA_OK) {
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fprintf(stderr, "init failed\n");
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exit(1);
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}
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// Encoding
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encode(0, LZMA_SYNC_FLUSH);
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encode(6, LZMA_SYNC_FLUSH);
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encode(0, LZMA_SYNC_FLUSH);
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encode(6, LZMA_SYNC_FLUSH);
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encode(0, LZMA_SYNC_FLUSH);
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encode(0, LZMA_FINISH);
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// Clean up
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lzma_end(&strm);
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return 0;
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}
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