fix the bug which prevented the same wxFile/DirDialog object from being used twice...

[wxWidgets.git] / include / wx / zstream.h

diff --git a/include/wx/zstream.h b/include/wx/zstream.h
index de88e07b56895d65ce6284e98e11d51d6cc24442..74ece7fb5b084ac85f146399cd8c0749b6f68fac 100644 (file)
--- a/include/wx/zstream.h
+++ b/include/wx/zstream.h
@@ -11,10 +11,6 @@
 #ifndef _WX_WXZSTREAM_H__
 #define _WX_WXZSTREAM_H__
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma interface "zstream.h"
-#endif
-
 #include "wx/defs.h"
 
 #if wxUSE_ZLIB && wxUSE_STREAMS
@@ -31,43 +27,55 @@ enum {
 
 // Flags
 enum {
-    wxZLIB_NO_HEADER = 0,   // raw deflate stream, no header or checksum
-    wxZLIB_ZLIB = 1,        // zlib header and checksum
-    wxZLIB_GZIP = 2         // gzip header and checksum, requires zlib 1.2+
+#if WXWIN_COMPATIBILITY_2_4
+    wxZLIB_24COMPATIBLE = 4, // read v2.4.x data without error
+#endif
+    wxZLIB_NO_HEADER = 0,    // raw deflate stream, no header or checksum
+    wxZLIB_ZLIB = 1,         // zlib header and checksum
+    wxZLIB_GZIP = 2,         // gzip header and checksum, requires zlib 1.2.1+
+    wxZLIB_AUTO = 3          // autodetect header zlib or gzip
 };
 
 class WXDLLIMPEXP_BASE wxZlibInputStream: public wxFilterInputStream {
  public:
-  wxZlibInputStream(wxInputStream& stream, int flags = wxZLIB_ZLIB | wxZLIB_GZIP);
+  wxZlibInputStream(wxInputStream& stream, int flags = wxZLIB_AUTO);
   virtual ~wxZlibInputStream();
 
   char Peek() { return wxInputStream::Peek(); }
-  size_t GetSize() const { return wxInputStream::GetSize(); }
+  wxFileOffset GetLength() const { return wxInputStream::GetLength(); }
+
+  static bool CanHandleGZip();
 
  protected:
   size_t OnSysRead(void *buffer, size_t size);
-  off_t OnSysTell() const { return m_pos; }
+  wxFileOffset OnSysTell() const { return m_pos; }
 
  protected:
   size_t m_z_size;
   unsigned char *m_z_buffer;
   struct z_stream_s *m_inflate;
-  off_t m_pos;
+  wxFileOffset m_pos;
+#if WXWIN_COMPATIBILITY_2_4
+  bool m_24compatibilty;
+#endif
 
-    DECLARE_NO_COPY_CLASS(wxZlibInputStream)
+  DECLARE_NO_COPY_CLASS(wxZlibInputStream)
 };
 
 class WXDLLIMPEXP_BASE wxZlibOutputStream: public wxFilterOutputStream {
  public:
   wxZlibOutputStream(wxOutputStream& stream, int level = -1, int flags = wxZLIB_ZLIB);
-  virtual ~wxZlibOutputStream();
+  virtual ~wxZlibOutputStream() { Close(); }
 
   void Sync() { DoFlush(false); }
-  size_t GetSize() const { return (size_t)m_pos; }
+  bool Close();
+  wxFileOffset GetLength() const { return m_pos; }
+
+  static bool CanHandleGZip();
 
  protected:
   size_t OnSysWrite(const void *buffer, size_t size);
-  off_t OnSysTell() const { return m_pos; }
+  wxFileOffset OnSysTell() const { return m_pos; }
 
   virtual void DoFlush(bool final);
 
@@ -75,9 +83,9 @@ class WXDLLIMPEXP_BASE wxZlibOutputStream: public wxFilterOutputStream {
   size_t m_z_size;
   unsigned char *m_z_buffer;
   struct z_stream_s *m_deflate;
-  off_t m_pos;
+  wxFileOffset m_pos;
 
-    DECLARE_NO_COPY_CLASS(wxZlibOutputStream)
+  DECLARE_NO_COPY_CLASS(wxZlibOutputStream)
 };
 
 #endif