1 files changed, 195 insertions, 0 deletions
diff --git a/scumm/sys.cpp b/scumm/sys.cpp
new file mode 100644
index 0000000000..ce797ffd26
--- /dev/null
+++ b/scumm/sys.cpp
@@ -0,0 +1,195 @@
+/* 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.
+ *
+ * $Header$
+ *
+ */
+
+#include "stdafx.h"
+#include "scumm.h"
+
+void *Scumm::fileOpen(const char *filename, int mode)
+{
+	clearFileReadFailed(_fileHandle);
+
+	if (mode == 1)
+		return fopen(filename, "rb");
+
+	error("This should not happen!");
+	return NULL;
+}
+
+void Scumm::fileClose(void *file)
+{
+	if (file)
+		fclose((FILE *)file);
+}
+
+bool Scumm::fileReadFailed(void *file)
+{
+	return _fileReadFailed != 0;
+}
+
+void Scumm::clearFileReadFailed(void *file)
+{
+	_fileReadFailed = false;
+}
+
+bool Scumm::fileEof(void *file)
+{
+	return feof((FILE *)file) != 0;
+}
+
+uint32 Scumm::filePos(void *handle)
+{
+	return ftell((FILE *)handle);
+}
+
+void Scumm::fileSeek(void *file, long offs, int whence)
+{
+	if (fseek((FILE *)file, offs, whence) != 0)
+		clearerr((FILE *)file);
+}
+
+void Scumm::fileRead(void *file, void *ptr, uint32 size)
+{
+	byte *ptr2 = (byte *)ptr, *src;
+
+	if (size == 0)
+		return;
+
+	if ((uint32)fread(ptr2, size, 1, (FILE *)file) != 1) {
+		clearerr((FILE *)file);
+		_fileReadFailed = true;
+	}
+
+	do {
+		*ptr2++ ^= _encbyte;
+	} while (--size);
+}
+
+int Scumm::fileReadByte()
+{
+	byte b;
+	byte *src;
+
+	if (fread(&b, 1, 1, (FILE *)_fileHandle) != 1) {
+		clearerr((FILE *)_fileHandle);
+		_fileReadFailed = true;
+	}
+	return b ^ _encbyte;
+}
+
+uint Scumm::fileReadWordLE()
+{
+	uint a = fileReadByte();
+	uint b = fileReadByte();
+	return a | (b << 8);
+}
+
+uint32 Scumm::fileReadDwordLE()
+{
+	uint a = fileReadWordLE();
+	uint b = fileReadWordLE();
+	return (b << 16) | a;
+}
+
+uint Scumm::fileReadWordBE()
+{
+	uint b = fileReadByte();
+	uint a = fileReadByte();
+	return a | (b << 8);
+}
+
+uint32 Scumm::fileReadDwordBE()
+{
+	uint b = fileReadWordBE();
+	uint a = fileReadWordBE();
+	return (b << 16) | a;
+}
+
+/* Overloaded versions */
+int Scumm::fileReadByte(void *handle)
+{
+	byte b;
+
+	if (fread(&b, 1, 1, (FILE *)handle) != 1) {
+		clearerr((FILE *)handle);
+		_fileReadFailed = true;
+	}
+	return b ^ _encbyte;
+}
+
+uint Scumm::fileReadWordLE(void *handle)
+{
+	uint a = fileReadByte(handle);
+	uint b = fileReadByte(handle);
+	return a | (b << 8);
+}
+
+uint32 Scumm::fileReadDwordLE(void *handle)
+{
+	uint a = fileReadWordLE(handle);
+	uint b = fileReadWordLE(handle);
+	return (b << 16) | a;
+}
+
+uint Scumm::fileReadWordBE(void *handle)
+{
+	uint b = fileReadByte(handle);
+	uint a = fileReadByte(handle);
+	return a | (b << 8);
+}
+
+uint32 Scumm::fileReadDwordBE(void *handle)
+{
+	uint b = fileReadWordBE(handle);
+	uint a = fileReadWordBE(handle);
+	return (b << 16) | a;
+}
+
+bool Scumm::checkFixedDisk()
+{
+	return true;
+}
+
+
+#ifdef NEED_STRDUP
+char *strdup(const char *s)
+{
+	if (s) {
+		int len = strlen(s) + 1;
+		char *d = (char *)malloc(len);
+		if (d)
+			memcpy(d, s, len);
+		return d;
+	}
+	return NULL;
+}
+#endif /* NEED_STRDUP */
+
+
+void *operator new(size_t size)
+{
+	return calloc(size, 1);
+}
+
+void operator delete(void *ptr)
+{
+	free(ptr);
+}