* wxStream: I've rewritten the inheritance

* added wxZlib*Stream
* updated makefiles and data.cpp
* modified a bit wxFile so I can use it in wxFile*Stream


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@263 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/zstream.h

@@ -0,0 +1,63 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        zstream.h
+// Purpose:     Memory stream classes
+// Author:      Guilhem Lavaux
+// Modified by:
+// Created:     11/07/98
+// RCS-ID:      $Id$
+// Copyright:   (c) Guilhem Lavaux
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+#ifndef __WXZSTREAM_H__
+#define __WXZSTREAM_H__
+
+#ifdef __GNUG__
+#pragma interface
+#endif
+
+#include <wx/stream.h>
+#include "zlib.h"
+
+class wxZlibInputStream: public wxFilterInputStream {
+  DECLARE_CLASS(wxZlibInputStream)
+ public:
+  wxZlibInputStream(wxInputStream& stream);
+  virtual ~wxZlibInputStream();
+
+  wxInputStream& Read(void *buffer, size_t size);
+  off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart);
+  off_t TellI() const;
+
+  size_t LastRead() const { return m_lastread; }
+  bool Eof() const;
+
+ protected:
+  size_t m_lastread;
+  size_t m_z_size;
+  unsigned char *m_z_buffer;
+  bool m_eof;
+  struct z_stream_s m_inflate;
+};
+
+class wxZlibOutputStream: public wxFilterOutputStream {
+  DECLARE_CLASS(wxZlibOutputStream)
+ public:
+  wxZlibOutputStream(wxOutputStream& stream);
+  virtual ~wxZlibOutputStream();
+
+  wxOutputStream& Write(const void *buffer, size_t size);
+  off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart);
+  off_t TellO() const;
+
+  size_t LastWrite() const { return m_lastwrite; }
+  bool Bad() const;
+
+ protected:
+  size_t m_lastwrite;
+  size_t m_z_size;
+  unsigned char *m_z_buffer;
+  bool m_bad;
+  struct z_stream_s m_deflate;
+};
+
+#endif