New savefile backend system (bye bye NONSTANDARD_SAVE...)

svn-id: r6007

3 files changed, 97 insertions, 1 deletions

diff --git a/common/savefile.h b/common/savefile.h
new file mode 100644
index 0000000000..952b07e44f
--- /dev/null
+++ b/common/savefile.h
@@ -0,0 +1,90 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2001  Ludvig Strigeus
+ * Copyright (C) 2001/2002 The ScummVM project
+ *
+ * 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
+ * of the License, 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, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * $Header$
+ *
+ */
+
+#ifndef COMMON_SAVEFILE_H
+#define COMMON_SAVEFILE_H
+
+#include <stdio.h>
+
+class SaveFile {
+public:
+	virtual ~SaveFile() {}
+	virtual int fread(void *buf, int size, int cnt) = 0;
+	virtual int fwrite(void *buf, int size, int cnt) = 0;
+#ifdef _WIN32_WCE
+	//Should go away.  See scumm/saveload.cpp and scumm/imuse.cpp
+	virtual int fseek(long offs, int whence) = 0;
+	virtual int feof() = 0;
+#endif
+};
+
+class StdioSaveFile : public SaveFile {
+private:
+	FILE *fh;
+public:
+	StdioSaveFile(const char *filename, const char *mode)
+		{ fh = ::fopen(filename, mode); }
+	~StdioSaveFile()
+		{ if(fh) ::fclose(fh); }
+
+
+	bool is_open() { return fh != NULL; }
+
+
+	int fread(void *buf, int size, int cnt)
+		{ return ::fread(buf, size, cnt, fh); }
+	int fwrite(void *buf, int size, int cnt)
+		{ return ::fwrite(buf, size, cnt, fh); }	
+#ifdef _WIN32_WCE
+	int fseek(long offs, int whence)
+		{ return ::fseek(fh, offs, whence); }
+	int feof()
+		{ return ::feof(fh); }
+#endif
+};
+
+class SaveFileManager {
+
+public:
+	virtual ~SaveFileManager() {}
+
+	virtual SaveFile *open_savefile(const char *filename,
+					bool saveOrLoad)
+	{
+		StdioSaveFile *sf = new StdioSaveFile(filename,
+						      (saveOrLoad? "wb":"rb"));
+		if(!sf->is_open()) {
+			delete sf;
+			sf = NULL;
+		}
+		return sf;
+	}
+
+	virtual void list_savefiles(const char *prefix,
+				    bool *marks, int num)
+	{
+		memset(marks, true, num*sizeof(bool));
+	}
+
+};
+
+#endif
diff --git a/common/scummsys.h b/common/scummsys.h
index 8b0e7fea29..1c63b4f838 100644
--- a/common/scummsys.h
+++ b/common/scummsys.h
@@ -240,7 +240,6 @@
 	#define CDECL	
 	#define SCUMM_NEED_ALIGNMENT
 	#define SCUMM_LITTLE_ENDIAN	
-	#define NONSTANDARD_SAVE	
 
   #define scumm_stricmp stricmp
   #define CHECK_HEAP
diff --git a/common/system.h b/common/system.h
index 13a1fab3fd..296fb072c8 100644
--- a/common/system.h
+++ b/common/system.h
@@ -24,6 +24,7 @@
 #define COMMON_SYSTEM_H
 
 #include "scummsys.h"
+#include "savefile.h"
 
 class Timer;
 
@@ -180,6 +181,12 @@ public:
 		g = (((color>>5)&0x3F) << 2);
 		b = ((color&0x1F) << 3);
 	}
+
+	// Savefile management
+	virtual SaveFileManager *get_savefile_manager()
+	{
+		return new SaveFileManager();
+	}
 };