Update the code to mostly match the new simpler file format

specification. Simplify things by removing most of the
support for known uncompressed size in most places.
There are some miscellaneous changes here and there too.

The API of liblzma has got many changes and still some
more will be done soon. While most of the code has been
updated, some things are not fixed (the command line tool
will choke with invalid filter chain, if nothing else).

Subblock filter is somewhat broken for now. It will be
updated once the encoded format of the Subblock filter
has been decided.

4 files changed, 12 insertions, 44 deletions

diff --git a/src/lzma/args.c b/src/lzma/args.c
index 4393a6bd..a4764032 100644
--- a/src/lzma/args.c
+++ b/src/lzma/args.c
@@ -52,8 +52,7 @@ static size_t filter_count = 0;
 
 
 enum {
-	OPT_COPY = INT_MIN,
-	OPT_SUBBLOCK,
+	OPT_SUBBLOCK = INT_MIN,
 	OPT_X86,
 	OPT_POWERPC,
 	OPT_IA64,
@@ -97,7 +96,6 @@ static const struct option long_opts[] = {
 	{ "compress",           no_argument,       NULL,  'z' },
 
 	// Filters
-	{ "copy",               no_argument,       NULL,   OPT_COPY },
 	{ "subblock",           optional_argument, NULL,   OPT_SUBBLOCK },
 	{ "x86",                no_argument,       NULL,   OPT_X86 },
 	{ "bcj",                no_argument,       NULL,   OPT_X86 },
@@ -267,10 +265,6 @@ parse_real(int argc, char **argv)
 
 		// Filter setup
 
-		case OPT_COPY:
-			add_filter(LZMA_FILTER_COPY, NULL);
-			break;
-
 		case OPT_SUBBLOCK:
 			add_filter(LZMA_FILTER_SUBBLOCK, optarg);
 			break;
@@ -314,8 +308,6 @@ parse_real(int argc, char **argv)
 			static const char *types[] = {
 				"auto",
 				"native",
-				"single",
-				"multi",
 				"alone",
 // 				"gzip",
 				NULL
@@ -471,18 +463,6 @@ set_compression_settings(void)
 		my_exit(ERROR);
 	}
 
-	// Optimize the filter chain a little by removing all
-	// Copy filters.
-	for (size_t i = 0; opt_filters[i].id != LZMA_VLI_VALUE_UNKNOWN; ++i) {
-		while (opt_filters[i].id == LZMA_FILTER_COPY) {
-			size_t j = i;
-			do {
-				opt_filters[j] = opt_filters[j + 1];
-			} while (opt_filters[++j].id
-					!= LZMA_VLI_VALUE_UNKNOWN);
-		}
-	}
-
 	const uint32_t memory_limit = opt_memory / (1024 * 1024) + 1;
 	uint32_t memory_usage = lzma_memory_usage(opt_filters, true);
 
diff --git a/src/lzma/args.h b/src/lzma/args.h
index 4f19a01e..c6098558 100644
--- a/src/lzma/args.h
+++ b/src/lzma/args.h
@@ -33,8 +33,6 @@ enum tool_mode {
 enum header_type {
 	HEADER_AUTO,
 	HEADER_NATIVE,
-	HEADER_SINGLE,
-	HEADER_MULTI,
 	HEADER_ALONE,
 	// HEADER_GZIP,
 };
diff --git a/src/lzma/error.c b/src/lzma/error.c
index a83de27a..e5391068 100644
--- a/src/lzma/error.c
+++ b/src/lzma/error.c
@@ -55,6 +55,12 @@ str_strm_error(lzma_ret code)
 	case LZMA_UNSUPPORTED_CHECK:
 		return _("Unsupported integrity check type");
 
+	case LZMA_MEMLIMIT_ERROR:
+		return _("Memory usage limit reached");
+
+	case LZMA_FORMAT_ERROR:
+		return _("File format not recognized");
+
 	default:
 		return NULL;
 	}
diff --git a/src/lzma/process.c b/src/lzma/process.c
index 56bcda9a..c180caf7 100644
--- a/src/lzma/process.c
+++ b/src/lzma/process.c
@@ -160,32 +160,16 @@ single_init(thread_data *t)
 	lzma_ret ret;
 
 	if (opt_mode == MODE_COMPRESS) {
-		const lzma_vli uncompressed_size
-				= t->pair->src_fd != STDIN_FILENO
-				? (lzma_vli)(t->pair->src_st.st_size)
-				: LZMA_VLI_VALUE_UNKNOWN;
-
-		// TODO Support Multi-Block Streams to store Extra.
 		if (opt_header == HEADER_ALONE) {
-			lzma_options_alone alone;
-			alone.uncompressed_size = uncompressed_size;
-			memcpy(&alone.lzma, opt_filters[0].options,
-					sizeof(alone.lzma));
-			ret = lzma_alone_encoder(&t->strm, &alone);
+			ret = lzma_alone_encoder(&t->strm,
+					opt_filters[0].options);
 		} else {
-			lzma_options_stream stream = {
-				.check = opt_check,
-				.has_crc32 = opt_check != LZMA_CHECK_NONE,
-				.uncompressed_size = uncompressed_size,
-				.alignment = 0,
-			};
-			memcpy(stream.filters, opt_filters,
-					sizeof(stream.filters));
-			ret = lzma_stream_encoder_single(&t->strm, &stream);
+			ret = lzma_stream_encoder(&t->strm,
+					opt_filters, opt_check);
 		}
 	} else {
 		// TODO Restrict file format if requested on the command line.
-		ret = lzma_auto_decoder(&t->strm, NULL, NULL);
+		ret = lzma_auto_decoder(&t->strm);
 	}
 
 	if (ret != LZMA_OK) {