VFS work

2003-12-04 08:25:59 +00:00
parent 78c96b7cad
commit ea0ba6fcb9
9 changed files with 761 additions and 81 deletions
@@ -0,0 +1,65 @@
+#include "global.h"
+#include "RageFileDriver.h"
+
+void RageFileObj::SetError( const CString &err )
+{
+	parent.SetError( err );
+}
+
+int RageFileObj::Seek( int offset )
+{
+	const int OldPos = parent.Tell();
+	if( offset < OldPos )
+		parent.Rewind();
+	else
+		offset -= OldPos;
+
+	char buf[256];
+	while( offset )
+	{
+		/* Must call parent.Read: */
+		int got = parent.Read( buf, min( (int) sizeof(buf), offset ) );
+		if( got == -1 )
+			return -1;
+
+		if( got == 0 )
+			break;
+		offset -= got;
+	}
+
+	return parent.Tell();
+}
+
+int RageFileObj::SeekCur( int offset )
+{
+	return Seek( parent.Tell() + offset );
+}
+
+int RageFileObj::GetFileSize()
+{
+	int OldPos = parent.Tell();
+	parent.Rewind();
+	char buf[256];
+	int ret = 0;
+	while( 1 )
+	{
+		/* Must call parent.Read: */
+		int got = parent.Read( buf, sizeof(buf) );
+		if( got == -1 )
+		{
+			ret = -1;
+			break;
+		}
+		if( got == 0 )
+			break;
+		ret += got;
+	}
+	Seek( OldPos );
+	return ret;
+}
+
+/*
+ * Copyright (c) 2003 by the person(s) listed below.  All rights reserved.
+ *   Glenn Maynard
+ */
+