Added support for raw encoding and decoding to the command

line tool, and made various cleanups. --lzma was renamed to
--lzma1 to prevent people from accidentally using LZMA when
they want LZMA2.

src/lzma/args.c

@@ -60,7 +60,7 @@ enum {
 	OPT_ARMTHUMB,
 	OPT_SPARC,
 	OPT_DELTA,
-	OPT_LZMA,
+	OPT_LZMA1,
 	OPT_LZMA2,
 
 	OPT_FILES,
@@ -108,7 +108,7 @@ static const struct option long_opts[] = {
 	{ "armthumb",           no_argument,       NULL,   OPT_ARMTHUMB },
 	{ "sparc",              no_argument,       NULL,   OPT_SPARC },
 	{ "delta",              optional_argument, NULL,   OPT_DELTA },
-	{ "lzma",               optional_argument, NULL,   OPT_LZMA },
+	{ "lzma1",              optional_argument, NULL,   OPT_LZMA1 },
 	{ "lzma2",              optional_argument, NULL,   OPT_LZMA2 },
 
 	// Other
@@ -300,7 +300,7 @@ parse_real(int argc, char **argv)
 			add_filter(LZMA_FILTER_DELTA, optarg);
 			break;
 
-		case OPT_LZMA:
+		case OPT_LZMA1:
 			add_filter(LZMA_FILTER_LZMA, optarg);
 			break;
 
@@ -316,7 +316,8 @@ parse_real(int argc, char **argv)
 				"auto",
 				"native",
 				"alone",
-// 				"gzip",
+				// "gzip",
+				"raw",
 				NULL
 			};
 
@@ -471,10 +472,10 @@ set_compression_settings(void)
 		my_exit(ERROR);
 	}
 
-	uint64_t memory_usage = lzma_memusage_encoder(opt_filters);
-			/* opt_mode == MODE_COMPRESS
+	// If using --format=raw, we can be decoding.
+	uint64_t memory_usage = opt_mode == MODE_COMPRESS
 			? lzma_memusage_encoder(opt_filters)
-			: lzma_memusage_decoder(opt_filters); */
+			: lzma_memusage_decoder(opt_filters);
 
 	// Don't go over the memory limits when the default
 	// setting is used.
@@ -546,7 +547,7 @@ parse_args(int argc, char **argv)
 		opt_stdout = true;
 	}
 
-	if (opt_mode == MODE_COMPRESS)
+	if (opt_mode == MODE_COMPRESS || opt_header == HEADER_RAW)
 		set_compression_settings();
 
 	// If no filenames are given, use stdin.

src/lzma/args.h

@@ -35,6 +35,7 @@ enum header_type {
 	HEADER_NATIVE,
 	HEADER_ALONE,
 	// HEADER_GZIP,
+	HEADER_RAW,
 };
 
 

src/lzma/help.c

@@ -57,7 +57,7 @@ show_help(void)
 "  -c, --stdout        write to standard output and don't delete input files\n"
 "  -S, --suffix=.SUF   use suffix `.SUF' on compressed files instead of `.lzma'\n"
 "  -F, --format=FMT    file format to encode or decode; possible values are\n"
-"                      `auto', `native', `single', `multi', and `alone'\n"
+"                      `auto' (default), `native', `alone', and `raw'\n"
 "      --files=[FILE]  read filenames to process from FILE; if FILE is\n"
 "                      omitted, filenames are read from the standard input;\n"
 "                      filenames must be terminated with the newline character\n"
@@ -79,9 +79,9 @@ show_help(void)
 	puts(_(
 " Custom filter chain for compression (alternative for using presets):\n"
 "\n"
-"  --lzma=[OPTS]       LZMA filter; OPTS is a comma-separated list of zero or\n"
-"                      more of the following options (valid values; default):\n"
-"                        dict=NUM   dictionary size in bytes (1 - 1Gi; 8Mi)\n"
+"  --lzma1=[OPTS]      LZMA1 or LZMA2; OPTS is a comma-separated list of zero or\n"
+"  --lzma2=[OPTS]      more of the following options (valid values; default):\n"
+"                        dict=NUM   dictionary size in bytes (1 - 1GiB; 8MiB)\n"
 "                        lc=NUM     number of literal context bits (0-8; 3)\n"
 "                        lp=NUM     number of literal position bits (0-4; 0)\n"
 "                        pb=NUM     number of position bits (0-4; 2)\n"
@@ -108,18 +108,6 @@ show_help(void)
 "                        rle=NUM     run-length encoder chunk size (0-256; 0)\n"
 ));
 
-/*
-These aren't implemented yet.
-
-	puts(_(
-" Metadata options:\n"
-"\n"
-"  -N, --name          save or restore the original filename and time stamp\n"
-"  -n, --no-name       do not save or restore filename and time stamp (default)\n"
-"  -S, --sign=KEY      sign the data with GnuPG when compressing, or verify\n"
-"                      the signature when decompressing\n"));
-*/
-
 	puts(_(
 " Resource usage options:\n"
 "\n"
@@ -166,8 +154,8 @@ show_version(void)
 	printf(
 "lzma (LZMA Utils) " PACKAGE_VERSION "\n"
 "\n"
-"Copyright (C) 1999-2006 Igor Pavlov\n"
-"Copyright (C) 2007 Lasse Collin\n"
+"Copyright (C) 1999-2008 Igor Pavlov\n"
+"Copyright (C) 2007-2008 Lasse Collin\n"
 "\n"
 "This program is free software; you can redistribute it and/or modify\n"
 "it under the terms of the GNU General Public License as published by\n"

src/lzma/process.c

@@ -155,18 +155,44 @@ single_init(thread_data *t)
 	lzma_ret ret;
 
 	if (opt_mode == MODE_COMPRESS) {
-		if (opt_header == HEADER_ALONE) {
-			ret = lzma_alone_encoder(&t->strm,
-					opt_filters[0].options);
-		} else {
+		switch (opt_header) {
+		case HEADER_AUTO:
+		case HEADER_NATIVE:
 			ret = lzma_stream_encoder(&t->strm,
 					opt_filters, opt_check);
+			break;
+
+		case HEADER_ALONE:
+			ret = lzma_alone_encoder(&t->strm,
+					opt_filters[0].options);
+			break;
+
+		case HEADER_RAW:
+			ret = lzma_raw_encoder(&t->strm, opt_filters);
+			break;
 		}
 	} else {
-		// TODO Restrict file format if requested on the command line.
-		ret = lzma_auto_decoder(&t->strm, opt_memory,
-				LZMA_WARN_UNSUPPORTED_CHECK
-					| LZMA_CONCATENATED);
+		const uint32_t flags = LZMA_WARN_UNSUPPORTED_CHECK
+				| LZMA_CONCATENATED;
+
+		switch (opt_header) {
+		case HEADER_AUTO:
+			ret = lzma_auto_decoder(&t->strm, opt_memory, flags);
+			break;
+
+		case HEADER_NATIVE:
+			ret = lzma_stream_decoder(&t->strm, opt_memory, flags);
+			break;
+
+		case HEADER_ALONE:
+			ret = lzma_alone_decoder(&t->strm, opt_memory);
+			break;
+
+		case HEADER_RAW:
+			// Memory usage has already been checked in args.c.
+			ret = lzma_raw_decoder(&t->strm, opt_filters);
+			break;
+		}
 	}
 
 	if (ret != LZMA_OK) {