+wxString::size_type wxFilterClassFactoryBase::FindExtension(
+ const wxChar *location) const
+{
+ size_t len = wxStrlen(location);
+
+ for (const wxChar *const *p = GetProtocols(wxSTREAM_FILEEXT); *p; p++)
+ {
+ size_t l = wxStrlen(*p);
+
+ if (l <= len && wxStrcmp(*p, location + len - l) == 0)
+ return len - l;
+ }
+
+ return wxString::npos;
+}
+
+bool wxFilterClassFactoryBase::CanHandle(const wxChar *protocol,
+ wxStreamProtocolType type) const
+{
+ if (type == wxSTREAM_FILEEXT)
+ return FindExtension(protocol) != wxString::npos;
+ else
+ for (const wxChar *const *p = GetProtocols(type); *p; p++)
+ if (wxStrcmp(*p, protocol) == 0)
+ return true;
+
+ return false;
+}
+
+// ----------------------------------------------------------------------------
+// wxFilterClassFactory
+// ----------------------------------------------------------------------------
+
+IMPLEMENT_ABSTRACT_CLASS(wxFilterClassFactory, wxFilterClassFactoryBase)
+
+wxFilterClassFactory *wxFilterClassFactory::sm_first = NULL;
+
+void wxFilterClassFactory::Remove()
+{
+ if (m_next != this)
+ {
+ wxFilterClassFactory **pp = &sm_first;
+
+ while (*pp != this)
+ pp = &(*pp)->m_next;
+
+ *pp = m_next;
+
+ m_next = this;
+ }
+}
+
+// ----------------------------------------------------------------------------
+// wxBufferedInputStream
+// ----------------------------------------------------------------------------
+
+wxBufferedInputStream::wxBufferedInputStream(wxInputStream& s,
+ wxStreamBuffer *buffer)
+ : wxFilterInputStream(s)
+{
+ if ( buffer )
+ {
+ // use the buffer provided by the user
+ m_i_streambuf = buffer;
+ }
+ else // create a default buffer
+ {
+ m_i_streambuf = new wxStreamBuffer(*this, wxStreamBuffer::read);
+
+ m_i_streambuf->SetBufferIO(1024);
+ }
+}
+
+wxBufferedInputStream::~wxBufferedInputStream()
+{
+ m_parent_i_stream->SeekI(-(wxFileOffset)m_i_streambuf->GetBytesLeft(),
+ wxFromCurrent);
+
+ delete m_i_streambuf;
+}
+
+char wxBufferedInputStream::Peek()
+{
+ return m_i_streambuf->Peek();
+}
+
+wxInputStream& wxBufferedInputStream::Read(void *buf, size_t size)
+{
+ // reset the error flag
+ Reset();
+
+ // first read from the already cached data
+ m_lastcount = GetWBack(buf, size);
+
+ // do we have to read anything more?
+ if ( m_lastcount < size )
+ {
+ size -= m_lastcount;
+ buf = (char *)buf + m_lastcount;
+
+ // the call to wxStreamBuffer::Read() below will reset our m_lastcount,
+ // so save it
+ size_t countOld = m_lastcount;
+
+ m_i_streambuf->Read(buf, size);
+
+ m_lastcount += countOld;
+ }
+
+ return *this;
+}
+
+wxFileOffset wxBufferedInputStream::SeekI(wxFileOffset pos, wxSeekMode mode)