// Name: zstream.h
// Purpose: Memory stream classes
// Author: Guilhem Lavaux
-// Modified by:
+// Modified by: Mike Wetherell
// Created: 11/07/98
// RCS-ID: $Id$
// Copyright: (c) Guilhem Lavaux
#ifndef _WX_WXZSTREAM_H__
#define _WX_WXZSTREAM_H__
-#ifdef __GNUG__
-#pragma interface
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
+#pragma interface "zstream.h"
#endif
#include "wx/defs.h"
#include "wx/stream.h"
-class WXDLLEXPORT wxZlibInputStream: public wxFilterInputStream {
+// Compression level
+enum {
+ wxZ_DEFAULT_COMPRESSION = -1,
+ wxZ_NO_COMPRESSION = 0,
+ wxZ_BEST_SPEED = 1,
+ wxZ_BEST_COMPRESSION = 9
+};
+
+// Flags
+enum {
+ wxZLIB_NO_HEADER = 1 // required for use in Gzip and Zip files
+};
+
+class WXDLLIMPEXP_BASE wxZlibInputStream: public wxFilterInputStream {
public:
- wxZlibInputStream(wxInputStream& stream);
+ wxZlibInputStream(wxInputStream& stream, int flags = 0);
virtual ~wxZlibInputStream();
+ char Peek() { return wxInputStream::Peek(); }
+ size_t GetSize() const { return wxInputStream::GetSize(); }
+
protected:
size_t OnSysRead(void *buffer, size_t size);
+ off_t 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;
+
+ DECLARE_NO_COPY_CLASS(wxZlibInputStream)
};
-class WXDLLEXPORT wxZlibOutputStream: public wxFilterOutputStream {
+class WXDLLIMPEXP_BASE wxZlibOutputStream: public wxFilterOutputStream {
public:
- wxZlibOutputStream(wxOutputStream& stream, int level = -1);
+ wxZlibOutputStream(wxOutputStream& stream, int level = -1, int flags = 0);
virtual ~wxZlibOutputStream();
- void Sync();
+ void Sync() { DoFlush(false); }
+ size_t GetSize() const { return (size_t)m_pos; }
protected:
size_t OnSysWrite(const void *buffer, size_t size);
+ off_t OnSysTell() const { return m_pos; }
+
+ virtual void DoFlush(bool final);
protected:
size_t m_z_size;
unsigned char *m_z_buffer;
struct z_stream_s *m_deflate;
+ off_t m_pos;
+
+ DECLARE_NO_COPY_CLASS(wxZlibOutputStream)
};
#endif