[Scummvm-cvs-logs] CVS: scummvm/common stream.h,1.5,1.6

[Eugene Sandulenko]

Update of /cvsroot/scummvm/scummvm/common
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv21715

Modified Files:
	stream.h 
Log Message:
Extended ReadMemoryStream class with seek method


Index: stream.h
===================================================================
RCS file: /cvsroot/scummvm/scummvm/common/stream.h,v
retrieving revision 1.5
retrieving revision 1.6
diff -u -d -r1.5 -r1.6
--- stream.h	4 May 2004 03:27:00 -0000	1.5
+++ stream.h	24 Jun 2004 14:06:22 -0000	1.6
@@ -143,6 +143,35 @@
 		_size = _sizeOrig;
 		_pos = 0;
 	}
+
+	void seek(uint32 offs, int whence = SEEK_SET) {
+		switch (whence) {
+		case SEEK_SET:
+			rewind();
+			if (offs > _size)
+				offs = _size;
+			_size -= offs;
+			_ptr += offs;
+			_pos += offs;
+			break;
+
+		case SEEK_CUR:
+			_size -= offs;
+			_ptr += offs;
+			_pos += offs;
+			break;
+
+		case SEEK_END:
+			rewind();
+			if (offs > _size)
+				offs = 0;
+			offs = _size - offs;
+			_size -= offs;
+			_ptr += offs;
+			_pos += offs;
+			break;
+		}
+	}
 };
 
 }	// End of namespace Common