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authorLasse Collin <lasse.collin@tukaani.org>2008-01-18 20:18:08 +0200
committerLasse Collin <lasse.collin@tukaani.org>2008-01-18 20:18:08 +0200
commit61dc82f3e306b25ce3cd3d529df9ec7a0ec04b73 (patch)
treecdc13dd318a6a3f34771a4acfc4f15cc5f6fdab5 /debug
parentAdded test files to test usage of flush marker in LZMA. (diff)
downloadxz-61dc82f3e306b25ce3cd3d529df9ec7a0ec04b73.tar.xz
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.
Diffstat (limited to '')
-rw-r--r--debug/Makefile.am30
-rw-r--r--debug/README17
-rw-r--r--debug/sync_flush.c116
3 files changed, 163 insertions, 0 deletions
diff --git a/debug/Makefile.am b/debug/Makefile.am
new file mode 100644
index 00000000..b393db3e
--- /dev/null
+++ b/debug/Makefile.am
@@ -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
diff --git a/debug/README b/debug/README
new file mode 100644
index 00000000..749610d7
--- /dev/null
+++ b/debug/README
@@ -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.
+
diff --git a/debug/sync_flush.c b/debug/sync_flush.c
new file mode 100644
index 00000000..24b8de61
--- /dev/null
+++ b/debug/sync_flush.c
@@ -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;
+}