From 264dc1349bc1f61c5f27383d4293b4c2dcf34b87 Mon Sep 17 00:00:00 2001
From: Eugene Sandulenko
Date: Thu, 24 Jun 2004 14:06:22 +0000
Subject: Extended ReadMemoryStream class with seek method

svn-id: r14030
---
 common/stream.h | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

(limited to 'common')

diff --git a/common/stream.h b/common/stream.h
index d30fa63a6d..3b6d7a8d34 100644
--- a/common/stream.h
+++ b/common/stream.h
@@ -143,6 +143,35 @@ public:
 		_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
-- 
cgit v1.2.3