1 files changed, 120 insertions, 0 deletions

diff --git a/src/streamstack.cpp b/src/streamstack.cpp
index 9e45cc4..c7f8af5 100644
--- a/src/streamstack.cpp
+++ b/src/streamstack.cpp
@@ -4,83 +4,203 @@ Bu::StreamStack::StreamStack()
 {
 }
 
+Bu::StreamStack::StreamStack( Bu::Stream *pStream )
+{
+        lFilts.prepend( pStream );
+}
+
 Bu::StreamStack::~StreamStack()
 {
+        clearStack();
+}
+
+bool Bu::StreamStack::isEmpty()
+{
+        return lFilts.isEmpty();
+}
+
+bool Bu::StreamStack::hasStream()
+{
+        return !lFilts.isEmpty();
+}
+
+void Bu::StreamStack::setStream( Bu::Stream *pStream )
+{
+        if( !lFilts.isEmpty() )
+                throw Bu::ExceptionBase("There is already a stream set.");
+
+        lFilts.prepend( pStream );
+}
+
+void Bu::StreamStack::clearStack()
+{
+        for( FilterList::iterator i = lFilts.begin(); i; i++ )
+        {
+                delete *i;
+        }
+
+        lFilts.clear();
+}
+
+void Bu::StreamStack::popFilter()
+{
+        if( lFilts.isEmpty() )
+                return;
+
+        delete lFilts.first();
+        lFilts.erase( lFilts.begin() );
+}
+
+Bu::Stream *Bu::StreamStack::getTop()
+{
+        checkStack();
+
+        return lFilts.first();
+}
+
+Bu::Stream *Bu::StreamStack::getStream()
+{
+        checkStack();
+
+        return lFilts.last();
 }
 
 void Bu::StreamStack::close()
 {
+        checkStack();
+
+        lFilts.first()->close();
 }
 
 size_t Bu::StreamStack::read( void *pBuf, size_t nBytes )
 {
+        checkStack();
+
+        return lFilts.first()->read( pBuf, nBytes );
 }
 
 size_t Bu::StreamStack::write( const void *pBuf, size_t nBytes )
 {
+        checkStack();
+
+        return lFilts.first()->write( pBuf, nBytes );
 }
 
 size_t Bu::StreamStack::write( const Bu::FString &sBuf )
 {
+        checkStack();
+
+        return lFilts.first()->write( sBuf );
 }
 
 long Bu::StreamStack::tell()
 {
+        checkStack();
+
+        return lFilts.first()->tell();
 }
 
 void Bu::StreamStack::seek( long offset )
 {
+        checkStack();
+
+        lFilts.first()->seek( offset );
 }
 
 void Bu::StreamStack::setPos( long pos )
 {
+        checkStack();
+
+        lFilts.first()->setPos( pos );
 }
 
 void Bu::StreamStack::setPosEnd( long pos )
 {
+        checkStack();
+
+        lFilts.first()->setPosEnd( pos );
 }
 
 bool Bu::StreamStack::isEos()
 {
+        checkStack();
+
+        return lFilts.first()->isEos();
 }
 
 bool Bu::StreamStack::isOpen()
 {
+        checkStack();
+
+        return lFilts.first()->isOpen();
 }
 
 void Bu::StreamStack::flush()
 {
+        checkStack();
+
+        lFilts.first()->flush();
 }
 
 bool Bu::StreamStack::canRead()
 {
+        checkStack();
+
+        return lFilts.first()->canRead();
 }
 
 bool Bu::StreamStack::canWrite()
 {
+        checkStack();
+
+        return lFilts.first()->canWrite();
 }
 
 bool Bu::StreamStack::isReadable()
 {
+        checkStack();
+
+        return lFilts.first()->isReadable();
 }
 
 bool Bu::StreamStack::isWritable()
 {
+        checkStack();
+
+        return lFilts.first()->isWritable();
 }
 
 bool Bu::StreamStack::isSeekable()
 {
+        checkStack();
+
+        return lFilts.first()->isSeekable();
 }
 
 bool Bu::StreamStack::isBlocking()
 {
+        checkStack();
+
+        return lFilts.first()->isBlocking();
 }
 
 void Bu::StreamStack::setBlocking( bool bBlocking )
 {
+        checkStack();
+
+        lFilts.first()->setBlocking( bBlocking );
 }
 
 void Bu::StreamStack::setSize( long iSize )
 {
+        checkStack();
+
+        lFilts.first()->setSize( iSize );
+}
+
+inline void Bu::StreamStack::checkStack()
+{
+        if( lFilts.isEmpty() )
+                throw Bu::ExceptionBase("StreamStack is empty.");
 }