1 files changed, 120 insertions, 0 deletions

diff --git a/src/membuf.cpp b/src/membuf.cpp
new file mode 100644
index 0000000..45ff5bd
--- /dev/null
+++ b/src/membuf.cpp
@@ -0,0 +1,120 @@
+#include "bu/membuf.h"
+
+using namespace Bu;
+
+Bu::MemBuf::MemBuf() :
+        nPos( 0 )
+{
+}
+
+Bu::MemBuf::MemBuf( const Bu::FString &str ) :
+        sBuf( str ),
+        nPos( 0 )
+{
+}
+
+Bu::MemBuf::~MemBuf()
+{
+}
+
+void Bu::MemBuf::close()
+{
+}
+
+size_t Bu::MemBuf::read( void *pBuf, size_t nBytes )
+{
+        if( (size_t)sBuf.getSize()-(size_t)nPos < nBytes )
+                nBytes = sBuf.getSize()-nPos;
+
+        memcpy( pBuf, sBuf.getStr()+nPos, nBytes );
+        nPos += nBytes;
+
+        return nBytes;
+}
+        
+size_t Bu::MemBuf::write( const void *pBuf, size_t nBytes )
+{
+        sBuf.append( (const char *)pBuf, nBytes );
+        nPos += nBytes;
+        return nBytes;
+}
+
+long Bu::MemBuf::tell()
+{
+        return nPos;
+}
+
+void Bu::MemBuf::seek( long offset )
+{
+        nPos += offset;
+        if( nPos < 0 ) nPos = 0;
+        else if( nPos > sBuf.getSize() ) nPos = sBuf.getSize();
+}
+
+void Bu::MemBuf::setPos( long pos )
+{
+        nPos = pos;
+        if( nPos < 0 ) nPos = 0;
+        else if( nPos > sBuf.getSize() ) nPos = sBuf.getSize();
+}
+
+void Bu::MemBuf::setPosEnd( long pos )
+{
+        nPos = sBuf.getSize()-pos;
+        if( nPos < 0 ) nPos = 0;
+        else if( nPos > sBuf.getSize() ) nPos = sBuf.getSize();
+}
+
+bool Bu::MemBuf::isEOS()
+{
+        return (nPos == sBuf.getSize());
+}
+
+bool Bu::MemBuf::isOpen()
+{
+        return true;
+}
+
+void Bu::MemBuf::flush()
+{
+}
+
+bool Bu::MemBuf::canRead()
+{
+        return !isEOS();
+}
+
+bool Bu::MemBuf::canWrite()
+{
+        return isEOS();
+}
+
+bool Bu::MemBuf::isReadable()
+{
+        return true;
+}
+
+bool Bu::MemBuf::isWritable()
+{
+        return true;
+}
+
+bool Bu::MemBuf::isSeekable()
+{
+        return true;
+}
+
+bool Bu::MemBuf::isBlocking()
+{
+        return true;
+}
+
+void Bu::MemBuf::setBlocking( bool bBlocking )
+{
+}
+
+Bu::FString &Bu::MemBuf::getString()
+{
+        return sBuf;
+}
+