MADS: Add support for FAB decompression in the dump_file command

1 files changed, 31 insertions, 6 deletions

diff --git a/engines/mads/debugger.cpp b/engines/mads/debugger.cpp
index 1ff42c5e2b..6bc6cf572d 100644
--- a/engines/mads/debugger.cpp
+++ b/engines/mads/debugger.cpp
@@ -21,6 +21,7 @@
  */
 
 #include "common/file.h"
+#include "mads/compression.h"
 #include "mads/mads.h"
 #include "mads/debugger.h"
 
@@ -169,8 +170,10 @@ bool Debugger::Cmd_ShowCodes(int argc, const char **argv) {
 }
 
 bool Debugger::Cmd_DumpFile(int argc, const char **argv) {
-	if (argc != 2) {
-		debugPrintf("Usage: %s <resource>\n", argv[0]);
+	if (argc < 2) {
+		debugPrintf("Usage: %s <resource> <unpack>\n", argv[0]);
+		debugPrintf("  resource: the resource name\n");
+		debugPrintf("  unpack: optional, when specified, the FAB/MADSPACK compressed resource is unpacked\n");
 	} else {
 		Common::DumpFile outFile;
 		Common::File inFile;
@@ -179,10 +182,32 @@ bool Debugger::Cmd_DumpFile(int argc, const char **argv) {
 			debugPrintf("Specified resource does not exist\n");
 		} else {
 			outFile.open(argv[1]);
-			byte *data = new byte[inFile.size()];
-
-			inFile.read(data, inFile.size());
-			outFile.write(data, inFile.size());
+			bool unpack = ((argc >= 3) && !scumm_stricmp(argv[2], "unpack"));
+
+			byte *data;
+			int totalSize = 0;
+
+			if (!unpack) {
+				totalSize = inFile.size();
+				data = new byte[totalSize];
+				inFile.read(data, totalSize);
+			} else {
+				MadsPack dataPack(&inFile);
+				int count = dataPack.getCount();
+				for (int i = 0; i < count; i++) {
+					totalSize += dataPack.getItem(i)._size;
+				}
+				data = new byte[totalSize];
+				byte *ptr = data;
+
+				for (int i = 0; i < count; i++) {
+					Common::SeekableReadStream *readStream = dataPack.getItemStream(i);
+					readStream->read(ptr, readStream->size());
+					ptr += readStream->size();
+				}
+			}
+
+			outFile.write(data, totalSize);
 			outFile.flush();
 
 			delete[] data;