11 files changed, 1418 insertions, 0 deletions
diff --git a/debug/Makefile.am b/debug/Makefile.am
new file mode 100644
index 0000000..9026fd9
--- /dev/null
+++ b/debug/Makefile.am
@@ -0,0 +1,30 @@
+##
+## Author: Lasse Collin
+##
+## This file has been put into the public domain.
+## You can do whatever you want with this file.
+##
+
+EXTRA_DIST = \
+	translation.bash
+
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+	sync_flush \
+	full_flush \
+	memusage \
+	crc32 \
+	known_sizes \
+	hex2bin
+
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+
+if COND_GNULIB
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diff --git a/debug/Makefile.in b/debug/Makefile.in
new file mode 100644
index 0000000..256be27
--- /dev/null
+++ b/debug/Makefile.in
@@ -0,0 +1,735 @@
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+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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+	      $$unique; \
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+	fi
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+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
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+
+distdir-am: $(DISTFILES)
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+	list='$(DISTFILES)'; \
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+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
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+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
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+	-rm -f ./$(DEPDIR)/memusage.Po
+	-rm -f ./$(DEPDIR)/repeat.Po
+	-rm -f ./$(DEPDIR)/sync_flush.Po
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+	-rm -f ./$(DEPDIR)/memusage.Po
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+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/debug/README b/debug/README
new file mode 100644
index 0000000..d42b272
--- /dev/null
+++ b/debug/README
@@ -0,0 +1,17 @@
+
+Debug tools
+-----------
+
+    This directory contains a few tiny programs that may be helpful when
+    debugging XZ 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/crc32.c b/debug/crc32.c
new file mode 100644
index 0000000..e545a3c
--- /dev/null
+++ b/debug/crc32.c
@@ -0,0 +1,39 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       crc32.c
+/// \brief      Primitive CRC32 calculation tool
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "sysdefs.h"
+#include "lzma.h"
+#include <stdio.h>
+
+
+int
+main(void)
+{
+	uint32_t crc = 0;
+
+	do {
+		uint8_t buf[BUFSIZ];
+		const size_t size = fread(buf, 1, sizeof(buf), stdin);
+		crc = lzma_crc32(buf, size, crc);
+	} while (!ferror(stdin) && !feof(stdin));
+
+	//printf("%08" PRIX32 "\n", crc);
+
+	// I want it little endian so it's easy to work with hex editor.
+	printf("%02" PRIX32 " ", crc & 0xFF);
+	printf("%02" PRIX32 " ", (crc >> 8) & 0xFF);
+	printf("%02" PRIX32 " ", (crc >> 16) & 0xFF);
+	printf("%02" PRIX32 " ", crc >> 24);
+	printf("\n");
+
+	return 0;
+}
diff --git a/debug/full_flush.c b/debug/full_flush.c
new file mode 100644
index 0000000..227f737
--- /dev/null
+++ b/debug/full_flush.c
@@ -0,0 +1,103 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       full_flush.c
+/// \brief      Encode files using LZMA_FULL_FLUSH
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "sysdefs.h"
+#include "lzma.h"
+#include <stdio.h>
+
+#define CHUNK 64
+
+
+static lzma_stream strm = LZMA_STREAM_INIT;
+static FILE *file_in;
+
+
+static void
+encode(size_t size, lzma_action action)
+{
+	uint8_t in[CHUNK];
+	uint8_t out[CHUNK];
+	lzma_ret ret;
+
+	do {
+		if (strm.avail_in == 0 && size > 0) {
+			const size_t amount = my_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)
+{
+	file_in = argc > 1 ? fopen(argv[1], "rb") : stdin;
+
+
+	// Config
+	lzma_options_lzma opt_lzma;
+	if (lzma_lzma_preset(&opt_lzma, 1)) {
+		fprintf(stderr, "preset failed\n");
+		exit(1);
+	}
+	lzma_filter filters[LZMA_FILTERS_MAX + 1];
+	filters[0].id = LZMA_FILTER_LZMA2;
+	filters[0].options = &opt_lzma;
+	filters[1].id = LZMA_VLI_UNKNOWN;
+
+	// Init
+	if (lzma_stream_encoder(&strm, filters, LZMA_CHECK_CRC32) != LZMA_OK) {
+		fprintf(stderr, "init failed\n");
+		exit(1);
+	}
+
+// 	if (lzma_easy_encoder(&strm, 1)) {
+// 		fprintf(stderr, "init failed\n");
+// 		exit(1);
+// 	}
+
+	// Encoding
+	encode(0, LZMA_FULL_FLUSH);
+	encode(6, LZMA_FULL_FLUSH);
+	encode(0, LZMA_FULL_FLUSH);
+	encode(7, LZMA_FULL_FLUSH);
+	encode(0, LZMA_FULL_FLUSH);
+	encode(0, LZMA_FINISH);
+
+	// Clean up
+	lzma_end(&strm);
+
+	return 0;
+}
diff --git a/debug/hex2bin.c b/debug/hex2bin.c
new file mode 100644
index 0000000..7324624
--- /dev/null
+++ b/debug/hex2bin.c
@@ -0,0 +1,53 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       hex2bin.c
+/// \brief      Converts hexadecimal input strings to binary
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "sysdefs.h"
+#include <stdio.h>
+#include <ctype.h>
+
+
+static int
+getbin(int x)
+{
+	if (x >= '0' && x <= '9')
+		return x - '0';
+
+	if (x >= 'A' && x <= 'F')
+		return x - 'A' + 10;
+
+	return x - 'a' + 10;
+}
+
+
+int
+main(void)
+{
+	while (true) {
+		int byte = getchar();
+		if (byte == EOF)
+			return 0;
+		if (!isxdigit(byte))
+			continue;
+
+		const int digit = getchar();
+		if (digit == EOF || !isxdigit(digit)) {
+			fprintf(stderr, "Invalid input\n");
+			return 1;
+		}
+
+		byte = (getbin(byte) << 4) | getbin(digit);
+		if (putchar(byte) == EOF) {
+			perror(NULL);
+			return 1;
+		}
+	}
+}
diff --git a/debug/known_sizes.c b/debug/known_sizes.c
new file mode 100644
index 0000000..6c3641f
--- /dev/null
+++ b/debug/known_sizes.c
@@ -0,0 +1,129 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       known_sizes.c
+/// \brief      Encodes .lzma Stream with sizes known in Block Header
+///
+/// The input file is encoded in RAM, and the known Compressed Size
+/// and/or Uncompressed Size values are stored in the Block Header.
+/// As of writing there's no such Stream encoder in liblzma.
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "sysdefs.h"
+#include "lzma.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/unistd.h>
+#include <stdio.h>
+
+
+// Support file sizes up to 1 MiB. We use this for output space too, so files
+// close to 1 MiB had better compress at least a little or we have a buffer
+// overflow.
+#define BUFFER_SIZE (1U << 20)
+
+
+int
+main(void)
+{
+	// Allocate the buffers.
+	uint8_t *in = malloc(BUFFER_SIZE);
+	uint8_t *out = malloc(BUFFER_SIZE);
+	if (in == NULL || out == NULL)
+		return 1;
+
+	// Fill the input buffer.
+	const size_t in_size = fread(in, 1, BUFFER_SIZE, stdin);
+
+	// Filter setup
+	lzma_options_lzma opt_lzma;
+	if (lzma_lzma_preset(&opt_lzma, 1))
+		return 1;
+
+	lzma_filter filters[] = {
+		{
+			.id = LZMA_FILTER_LZMA2,
+			.options = &opt_lzma
+		},
+		{
+			.id = LZMA_VLI_UNKNOWN
+		}
+	};
+
+	lzma_block block = {
+		.check = LZMA_CHECK_CRC32,
+		.compressed_size = BUFFER_SIZE, // Worst case reserve
+		.uncompressed_size = in_size,
+		.filters = filters,
+	};
+
+	lzma_stream strm = LZMA_STREAM_INIT;
+	if (lzma_block_encoder(&strm, &block) != LZMA_OK)
+		return 1;
+
+	// Reserve space for Stream Header and Block Header. We need to
+	// calculate the size of the Block Header first.
+	if (lzma_block_header_size(&block) != LZMA_OK)
+		return 1;
+
+	size_t out_size = LZMA_STREAM_HEADER_SIZE + block.header_size;
+
+	strm.next_in = in;
+	strm.avail_in = in_size;
+	strm.next_out = out + out_size;
+	strm.avail_out = BUFFER_SIZE - out_size;
+
+	if (lzma_code(&strm, LZMA_FINISH) != LZMA_STREAM_END)
+		return 1;
+
+	out_size += strm.total_out;
+
+	if (lzma_block_header_encode(&block, out + LZMA_STREAM_HEADER_SIZE)
+			!= LZMA_OK)
+		return 1;
+
+	lzma_index *idx = lzma_index_init(NULL);
+	if (idx == NULL)
+		return 1;
+
+	if (lzma_index_append(idx, NULL, block.header_size + strm.total_out,
+			strm.total_in) != LZMA_OK)
+		return 1;
+
+	if (lzma_index_encoder(&strm, idx) != LZMA_OK)
+		return 1;
+
+	if (lzma_code(&strm, LZMA_RUN) != LZMA_STREAM_END)
+		return 1;
+
+	out_size += strm.total_out;
+
+	lzma_end(&strm);
+
+	lzma_index_end(idx, NULL);
+
+	// Encode the Stream Header and Stream Footer. backwards_size is
+	// needed only for the Stream Footer.
+	lzma_stream_flags sf = {
+		.backward_size = strm.total_out,
+		.check = block.check,
+	};
+
+	if (lzma_stream_header_encode(&sf, out) != LZMA_OK)
+		return 1;
+
+	if (lzma_stream_footer_encode(&sf, out + out_size) != LZMA_OK)
+		return 1;
+
+	out_size += LZMA_STREAM_HEADER_SIZE;
+
+	// Write out the file.
+	fwrite(out, 1, out_size, stdout);
+
+	return 0;
+}
diff --git a/debug/memusage.c b/debug/memusage.c
new file mode 100644
index 0000000..bd72b5a
--- /dev/null
+++ b/debug/memusage.c
@@ -0,0 +1,51 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       memusage.c
+/// \brief      Calculates memory usage using lzma_memory_usage()
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "sysdefs.h"
+#include "lzma.h"
+#include <stdio.h>
+
+int
+main(void)
+{
+	lzma_options_lzma lzma = {
+		.dict_size = (1U << 30) + (1U << 29),
+		.lc = 3,
+		.lp = 0,
+		.pb = 2,
+		.preset_dict = NULL,
+		.preset_dict_size = 0,
+		.mode = LZMA_MODE_NORMAL,
+		.nice_len = 48,
+		.mf = LZMA_MF_BT4,
+		.depth = 0,
+	};
+
+/*
+	lzma_options_filter filters[] = {
+		{ LZMA_FILTER_LZMA1,
+			(lzma_options_lzma *)&lzma_preset_lzma[6 - 1] },
+		{ UINT64_MAX, NULL }
+	};
+*/
+	lzma_filter filters[] = {
+		{ LZMA_FILTER_LZMA1, &lzma },
+		{ UINT64_MAX, NULL }
+	};
+
+	printf("Encoder: %10" PRIu64 " B\n",
+			lzma_raw_encoder_memusage(filters));
+	printf("Decoder: %10" PRIu64 " B\n",
+			lzma_raw_decoder_memusage(filters));
+
+	return 0;
+}
diff --git a/debug/repeat.c b/debug/repeat.c
new file mode 100644
index 0000000..a00bde2
--- /dev/null
+++ b/debug/repeat.c
@@ -0,0 +1,36 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       repeat.c
+/// \brief      Repeats given string given times
+///
+/// This program can be useful when debugging run-length encoder in
+/// the Subblock filter, especially the condition when repeat count
+/// doesn't fit into 28-bit integer.
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "sysdefs.h"
+#include <stdio.h>
+
+
+int
+main(int argc, char **argv)
+{
+	if (argc != 3) {
+		fprintf(stderr, "Usage: %s COUNT STRING\n", argv[0]);
+		exit(1);
+	}
+
+	unsigned long long count = strtoull(argv[1], NULL, 10);
+	const size_t size = strlen(argv[2]);
+
+	while (count-- != 0)
+		fwrite(argv[2], 1, size, stdout);
+
+	return !!(ferror(stdout) || fclose(stdout));
+}
diff --git a/debug/sync_flush.c b/debug/sync_flush.c
new file mode 100644
index 0000000..2292333
--- /dev/null
+++ b/debug/sync_flush.c
@@ -0,0 +1,125 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       sync_flush.c
+/// \brief      Encode files using LZMA_SYNC_FLUSH
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include "sysdefs.h"
+#include "lzma.h"
+#include <stdio.h>
+
+#define CHUNK 64
+
+
+static lzma_stream strm = LZMA_STREAM_INIT;
+static FILE *file_in;
+
+
+static void
+encode(size_t size, lzma_action action)
+{
+	uint8_t in[CHUNK];
+	uint8_t out[CHUNK];
+	lzma_ret ret;
+
+	do {
+		if (strm.avail_in == 0 && size > 0) {
+			const size_t amount = my_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)
+{
+	file_in = argc > 1 ? fopen(argv[1], "rb") : stdin;
+
+	// Config
+	lzma_options_lzma opt_lzma = {
+		.dict_size = 1U << 16,
+		.lc = LZMA_LC_DEFAULT,
+		.lp = LZMA_LP_DEFAULT,
+		.pb = LZMA_PB_DEFAULT,
+		.preset_dict = NULL,
+		.mode = LZMA_MODE_NORMAL,
+		.nice_len = 32,
+		.mf = LZMA_MF_HC3,
+		.depth = 0,
+	};
+
+	lzma_options_delta opt_delta = {
+		.dist = 16
+	};
+
+	lzma_filter filters[LZMA_FILTERS_MAX + 1];
+	filters[0].id = LZMA_FILTER_LZMA2;
+	filters[0].options = &opt_lzma;
+	filters[1].id = LZMA_VLI_UNKNOWN;
+
+	// Init
+	if (lzma_stream_encoder(&strm, filters, LZMA_CHECK_CRC32) != 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(7, LZMA_SYNC_FLUSH);
+	encode(0, LZMA_SYNC_FLUSH);
+	encode(0, LZMA_FINISH);
+
+/*
+	encode(53, LZMA_SYNC_FLUSH);
+	opt_lzma.lc = 2;
+	opt_lzma.lp = 1;
+	opt_lzma.pb = 0;
+	if (lzma_filters_update(&strm, filters) != LZMA_OK) {
+		fprintf(stderr, "update failed\n");
+		exit(1);
+	}
+	encode(404, LZMA_FINISH);
+*/
+
+	// Clean up
+	lzma_end(&strm);
+
+	return 0;
+
+	// Prevent useless warnings so we don't need to have special CFLAGS
+	// to disable -Werror.
+	(void)opt_lzma;
+	(void)opt_delta;
+}
diff --git a/debug/translation.bash b/debug/translation.bash
new file mode 100644
index 0000000..df4210d
--- /dev/null
+++ b/debug/translation.bash
@@ -0,0 +1,100 @@
+#!/bin/bash
+
+###############################################################################
+#
+# Script to check output of some translated messages
+#
+# This should be useful for translators to check that the translated strings
+# look good. This doesn't make xz print all possible strings, but it should
+# cover most of the cases where mistakes can easily happen.
+#
+# Give the path and filename of the xz executable as an argument. If no
+# arguments are given, this script uses ../src/xz/xz (relative to the
+# location of this script).
+#
+# You may want to pipe the output of this script to less -S to view the
+# tables printed by xz --list on a 80-column terminal. On the other hand,
+# viewing the other messages may be better without -S.
+#
+###############################################################################
+#
+# Author: Lasse Collin
+#
+# This file has been put into the public domain.
+# You can do whatever you want with this file.
+#
+###############################################################################
+
+set -e
+
+# If an argument was given, use it to set the location of the xz executable.
+unset XZ
+if [ -n "$1" ]; then
+	XZ=$1
+	[ "x${XZ:0:1}" != "x/" ] && XZ="$PWD/$XZ"
+fi
+
+# Locate top_srcdir and go there.
+top_srcdir="$(cd -- "$(dirname -- "$0")" && cd .. && pwd)"
+cd -- "$top_srcdir"
+
+# If XZ wasn't already set, use the default location.
+XZ=${XZ-"$PWD/src/xz/xz"}
+if [ "$(type -t "$XZ" || true)" != "file" ]; then
+	echo "Give the location of the xz executable as an argument" \
+			"to this script."
+	exit 1
+fi
+XZ=$(type -p -- "$XZ")
+
+# Print the xz version and locale information.
+echo "$XZ --version"
+"$XZ" --version
+echo
+if [ -d .git ] && type git > /dev/null 2>&1; then
+	echo "Source code version in $PWD:"
+	git describe --abbrev=4
+fi
+echo
+locale
+echo
+
+# Make the test files directory the current directory.
+cd tests/files
+
+# Put xz in PATH so that argv[0] stays short.
+PATH=${XZ%/*}:$PATH
+
+# Some of the test commands are error messages and thus don't
+# return successfully.
+set +e
+
+for CMD in \
+	"xz --foobarbaz" \
+	"xz --memlimit=123abcd" \
+	"xz --memlimit=40MiB -6 /dev/null" \
+	"xz --memlimit=0 --info-memory" \
+	"xz --memlimit-compress=1234MiB --memlimit-decompress=50MiB --info-memory" \
+	"xz --verbose --verbose /dev/null | cat" \
+	"xz --lzma2=foobarbaz" \
+	"xz --lzma2=foobarbaz=abcd" \
+	"xz --lzma2=mf=abcd" \
+	"xz --lzma2=preset=foobarbaz" \
+	"xz --lzma2=mf=bt4,nice=2" \
+	"xz --lzma2=nice=50000" \
+	"xz --help" \
+	"xz --long-help" \
+	"xz --list good-*lzma2*" \
+	"xz --list good-1-check*" \
+	"xz --list --verbose good-*lzma2*" \
+	"xz --list --verbose good-1-check*" \
+	"xz --list --verbose --verbose good-*lzma2*" \
+	"xz --list --verbose --verbose good-1-check*" \
+	"xz --list --verbose --verbose unsupported-check.xz"
+do
+	echo "-----------------------------------------------------------"
+	echo
+	echo "\$ $CMD"
+	eval "$CMD"
+	echo
+done 2>&1