initial commit

2025-08-28 00:11:15 +00:00 · 2020-04-05 00:07:50 +08:00
parent 2090c6fa97
commit 05a1b863a6
487 changed files with 114253 additions and 0 deletions
--- a/SQUASHFS/squashfs-tools-4.4/squashfs-tools/compressor.c
+++ b/SQUASHFS/squashfs-tools-4.4/squashfs-tools/compressor.c
@@ -0,0 +1,145 @@
+/*
+ *
+ * Copyright (c) 2009, 2010, 2011
+ * Phillip Lougher <phillip@squashfs.org.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * compressor.c
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include "compressor.h"
+#include "squashfs_fs.h"
+
+#ifndef GZIP_SUPPORT
+static struct compressor gzip_comp_ops =  {
+	ZLIB_COMPRESSION, "gzip"
+};
+#else
+extern struct compressor gzip_comp_ops;
+#endif
+
+#ifndef LZMA_SUPPORT
+static struct compressor lzma_comp_ops = {
+	LZMA_COMPRESSION, "lzma"
+};
+#else
+extern struct compressor lzma_comp_ops;
+#endif
+
+#ifndef LZO_SUPPORT
+static struct compressor lzo_comp_ops = {
+	LZO_COMPRESSION, "lzo"
+};
+#else
+extern struct compressor lzo_comp_ops;
+#endif
+
+#ifndef LZ4_SUPPORT
+static struct compressor lz4_comp_ops = {
+	LZ4_COMPRESSION, "lz4"
+};
+#else
+extern struct compressor lz4_comp_ops;
+#endif
+
+#ifndef XZ_SUPPORT
+static struct compressor xz_comp_ops = {
+	XZ_COMPRESSION, "xz"
+};
+#else
+extern struct compressor xz_comp_ops;
+#endif
+
+#ifndef ZSTD_SUPPORT
+static struct compressor zstd_comp_ops = {
+	ZSTD_COMPRESSION, "zstd"
+};
+#else
+extern struct compressor zstd_comp_ops;
+#endif
+
+static struct compressor unknown_comp_ops = {
+	0, "unknown"
+};
+
+
+struct compressor *compressor[] = {
+	&gzip_comp_ops,
+	&lzma_comp_ops,
+	&lzo_comp_ops,
+	&lz4_comp_ops,
+	&xz_comp_ops,
+	&zstd_comp_ops,
+	&unknown_comp_ops
+};
+
+
+struct compressor *lookup_compressor(char *name)
+{
+	int i;
+
+	for(i = 0; compressor[i]->id; i++)
+		if(strcmp(compressor[i]->name, name) == 0)
+			break;
+
+	return compressor[i];
+}
+
+
+struct compressor *lookup_compressor_id(int id)
+{
+	int i;
+
+	for(i = 0; compressor[i]->id; i++)
+		if(id == compressor[i]->id)
+			break;
+
+	return compressor[i];
+}
+
+
+void display_compressors(char *indent, char *def_comp)
+{
+	int i;
+
+	for(i = 0; compressor[i]->id; i++)
+		if(compressor[i]->supported)
+			fprintf(stderr, "%s\t%s%s\n", indent,
+				compressor[i]->name,
+				strcmp(compressor[i]->name, def_comp) == 0 ?
+				" (default)" : "");
+}
+
+
+void display_compressor_usage(char *def_comp)
+{
+	int i;
+
+	for(i = 0; compressor[i]->id; i++)
+		if(compressor[i]->supported) {
+			char *str = strcmp(compressor[i]->name, def_comp) == 0 ?
+				" (default)" : "";
+			if(compressor[i]->usage) {
+				fprintf(stderr, "\t%s%s\n",
+					compressor[i]->name, str);
+				compressor[i]->usage();
+			} else
+				fprintf(stderr, "\t%s (no options)%s\n",
+					compressor[i]->name, str);
+		}
+}