From ed40dc5a2c28a8dfccab8c165b3780738eeef93e Mon Sep 17 00:00:00 2001
From: Lasse Collin <lasse.collin@tukaani.org>
Date: Wed, 23 Jan 2008 21:21:21 +0200
Subject: [PATCH] Added debug/full_flush.c.

---
 debug/Makefile.am  |   3 +-
 debug/full_flush.c | 105 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 107 insertions(+), 1 deletion(-)
 create mode 100644 debug/full_flush.c

diff --git a/debug/Makefile.am b/debug/Makefile.am
index 16433b7b..b935300e 100644
--- a/debug/Makefile.am
+++ b/debug/Makefile.am
@@ -14,7 +14,8 @@
 
 noinst_PROGRAMS = \
 	repeat \
-	sync_flush
+	sync_flush \
+	full_flush
 
 AM_CPPFLAGS = \
 	-I@top_srcdir@/src/common \
diff --git a/debug/full_flush.c b/debug/full_flush.c
new file mode 100644
index 00000000..697b4bb1
--- /dev/null
+++ b/debug/full_flush.c
@@ -0,0 +1,105 @@
+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       full_flush.c
+/// \brief      Encode files using LZMA_FULL_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_stream opt_stream = {
+		.check = LZMA_CHECK_CRC32,
+		.has_crc32 = true,
+		.uncompressed_size = LZMA_VLI_VALUE_UNKNOWN,
+		.alignment = 0,
+	};
+	opt_stream.filters[0].id = LZMA_VLI_VALUE_UNKNOWN;
+	opt_stream.metadata_filters[0].id = LZMA_VLI_VALUE_UNKNOWN;
+	opt_stream.header = NULL;
+	opt_stream.footer = NULL;
+
+	// Init
+	if (lzma_stream_encoder_multi(&strm, &opt_stream) != LZMA_OK) {
+		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;
+}