From 0432ca6d0f4240b7e5640197f4fbce6d512b0f4b Mon Sep 17 00:00:00 2001
From: Sven Hesse
Date: Tue, 25 Jan 2011 12:14:05 +0000
Subject: GOB: Add a FakeFileHandler

For temporarily storing save "files"

svn-id: r55528
---
 engines/gob/save/savehandler.cpp | 44 ++++++++++++++++++++++++++++++++++++++++
 engines/gob/save/savehandler.h   | 20 +++++++++++++++++-
 2 files changed, 63 insertions(+), 1 deletion(-)

(limited to 'engines/gob')

diff --git a/engines/gob/save/savehandler.cpp b/engines/gob/save/savehandler.cpp
index 68f1f22b78..83f6e51cc5 100644
--- a/engines/gob/save/savehandler.cpp
+++ b/engines/gob/save/savehandler.cpp
@@ -489,4 +489,48 @@ bool NotesHandler::save(int16 dataVar, int32 size, int32 offset) {
 	return writer.writePart(0, &vars);
 }
 
+
+FakeFileHandler::FakeFileHandler(GobEngine *vm) : SaveHandler(vm) {
+}
+
+FakeFileHandler::~FakeFileHandler() {
+}
+
+int32 FakeFileHandler::getSize() {
+	if (_data.empty())
+		return -1;
+
+	return _data.size();
+}
+
+bool FakeFileHandler::load(int16 dataVar, int32 size, int32 offset) {
+	if (size <= 0)
+		return false;
+
+	if ((uint32)(offset + size) > _data.size())
+		return false;
+
+	_vm->_inter->_variables->copyFrom(dataVar, &_data[0] + offset, size);
+
+	return true;
+}
+
+bool FakeFileHandler::save(int16 dataVar, int32 size, int32 offset) {
+	if (size <= 0)
+		return false;
+
+	if ((uint32)(offset + size) > _data.size())
+		_data.resize(offset + size);
+
+	_vm->_inter->_variables->copyTo(dataVar, &_data[0] + offset, size);
+
+	return true;
+}
+
+bool FakeFileHandler::deleteFile() {
+	_data.clear();
+
+	return true;
+}
+
 } // End of namespace Gob
diff --git a/engines/gob/save/savehandler.h b/engines/gob/save/savehandler.h
index a5ae1f5c21..d12d6bca0d 100644
--- a/engines/gob/save/savehandler.h
+++ b/engines/gob/save/savehandler.h
@@ -27,7 +27,9 @@
 #define GOB_SAVE_SAVEHANDLER_H
 
 #include "common/savefile.h"
-#include "engines/gob/video.h"	// for SurfacePtr
+#include "common/array.h"
+
+#include "engines/gob/video.h" // for SurfacePtr
 
 namespace Gob {
 
@@ -180,6 +182,22 @@ private:
 	SavePartVars *_notes;
 };
 
+/** A handler that behaves like a file but keeps the contents in memory. */
+class FakeFileHandler : public SaveHandler {
+public:
+	FakeFileHandler(GobEngine *vm);
+	~FakeFileHandler();
+
+	int32 getSize();
+	bool load(int16 dataVar, int32 size, int32 offset);
+	bool save(int16 dataVar, int32 size, int32 offset);
+
+	bool deleteFile();
+
+private:
+	Common::Array<byte> _data;
+};
+
 } // End of namespace Gob
 
 #endif // GOB_SAVE_SAVEHANDLER_H
-- 
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