From d1e486136db52b466b788c1d81a5c88b6f24acd9 Mon Sep 17 00:00:00 2001
From: Mike Buland <eichlan@xagasoft.com>
Date: Thu, 2 Nov 2006 06:14:41 +0000
Subject: Added the SBuffer class, a memory buffer that can be used like a
 stream.  Yay!

---
 src/sbuffer.cpp | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 src/sbuffer.cpp

(limited to 'src/sbuffer.cpp')

diff --git a/src/sbuffer.cpp b/src/sbuffer.cpp
new file mode 100644
index 0000000..00324b5
--- /dev/null
+++ b/src/sbuffer.cpp
@@ -0,0 +1,62 @@
+#include <string.h>
+#include "sbuffer.h"
+
+SBuffer::SBuffer() :
+	bOpen( true ),
+	nPos( 0 )
+{
+}
+
+SBuffer::~SBuffer()
+{
+}
+
+void SBuffer::close()
+{
+	bOpen = false;
+	fbData.clearData();
+}
+
+size_t SBuffer::read( char *pBuf, size_t nBytes )
+{
+	long nLeft = fbData.getLength() - nPos;
+	if( nBytes > nLeft )
+		nBytes = nLeft;
+
+	if( nLeft == 0 )
+		return 0;
+
+	memcpy( pBuf, fbData.getData()+nPos, nBytes );
+	nPos += nBytes;
+
+	return nBytes;
+}
+
+size_t SBuffer::write( const char *pBuf, size_t nBytes )
+{
+	fbData.appendData( pBuf, nBytes );
+	nPos += nBytes;
+
+	return nBytes;
+}
+
+long SBuffer::tell()
+{
+	return nPos;
+}
+
+void SBuffer::seek( long offset )
+{
+	nPos += offset;
+}
+
+void SBuffer::setPos( long pos )
+{
+	nPos = pos;
+}
+
+void SBuffer::setPosEnd( long pos )
+{
+	nPos = fbData.getLength() - pos;
+}
+
-- 
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