X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/219f895a273cdf12ded3f79dbbcd1e076fe83901..22c248be960d9c4030be1e8507070fe748ec0aec:/include/wx/stream.h

diff --git a/include/wx/stream.h b/include/wx/stream.h
index 8ee9d1b8df..2eeb48126e 100644
--- a/include/wx/stream.h
+++ b/include/wx/stream.h
@@ -17,94 +17,189 @@
 #endif
 
 #include <stdio.h>
-#include <wx/object.h>
-#include <wx/string.h>
+#include "wx/object.h"
+#include "wx/string.h"
+#include "wx/filefn.h"  // for off_t, wxInvalidOffset and wxSeekMode
+
+class WXDLLEXPORT wxInputStream;
+class WXDLLEXPORT wxOutputStream;
+
+typedef wxInputStream& (*__wxInputManip)(wxInputStream&);
+typedef wxOutputStream& (*__wxOutputManip)(wxOutputStream&);
+
+wxOutputStream& WXDLLEXPORT wxEndL(wxOutputStream& o_stream);
+
+class WXDLLEXPORT wxStreamBuffer {
+ public:
+  wxStreamBuffer(wxInputStream& stream);
+  wxStreamBuffer(wxOutputStream& stream);
+  ~wxStreamBuffer();
+
+  void Read(void *buffer, size_t size);
+  void Write(const void *buffer, size_t size);
+  void WriteBack(char c);
+
+  void SetBufferIO(char *buffer_start, char *buffer_end);
+  void SetBufferIO(size_t bufsize);
+  void ResetBuffer(); 
+
+  void SetBufferPosition(char *buffer_position)
+                                  { m_buffer_pos = buffer_position; }
+  void SetIntPosition(size_t pos)
+                     { m_buffer_pos = m_buffer_start + pos; }
+  char *GetBufferPosition() const { return m_buffer_pos; }
+  size_t GetIntPosition() const { return m_buffer_pos - m_buffer_start; }
+  
+  char *GetBufferStart() const    { return m_buffer_start; }
+  char *GetBufferEnd() const      { return m_buffer_end; }
+  size_t GetBufferSize() const    { return m_buffer_size; }
+  size_t GetLastAccess() const      { return m_buffer_end - m_buffer_start; }
+
+ protected:
+  char *m_buffer_start, *m_buffer_end, *m_buffer_pos;
+  size_t m_buffer_size;
+
+  wxInputStream *m_istream;
+  wxOutputStream *m_ostream;
+};
 
 /*
  * wxStream: base classes
  */
-
-typedef enum {
-  wxBeginPosition = 0, wxCurrentPosition = 1, wxEndPosition = 2
-} wxWhenceType;
-
-class wxOutputStream;
-class wxInputStream: public wxObject {
-  DECLARE_ABSTRACT_CLASS(wxInputStream)
+class WXDLLEXPORT wxInputStream {
  public:
   wxInputStream();
   virtual ~wxInputStream();
 
-  virtual wxInputStream& Read(void *buffer, size_t size) = 0;
+  // IO functions
+  virtual char Peek() = 0;
+  virtual char GetC();
+  virtual wxInputStream& Read(void *buffer, size_t size);
   wxInputStream& Read(wxOutputStream& stream_out);
 
-  virtual size_t SeekI(int pos, wxWhenceType whence = wxBeginPosition) = 0;
-  virtual size_t TellI() const = 0;
+  // Position functions
+  off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart);
+  off_t TellI() const;
+
+  // State functions
+  bool Eof() const { return m_eof; }
+  size_t LastRead() { return m_lastread; }
+  wxStreamBuffer *InputStreamBuffer() { return m_i_streambuf; }
 
-  virtual bool Eof() const = 0;
-  virtual size_t LastRead() const = 0;
+  // Operators
+  wxInputStream& operator>>(wxOutputStream& out) { return Read(out); }
+  wxInputStream& operator>>(wxString& line);
+  wxInputStream& operator>>(char& c);
+  wxInputStream& operator>>(short& i);
+  wxInputStream& operator>>(long& i);
+  wxInputStream& operator>>(float& i);
+  wxInputStream& operator>>( __wxInputManip func) { return func(*this); }
+
+ protected:
+  friend class wxStreamBuffer;
+  friend class wxFilterInputStream;
+
+  wxInputStream(wxStreamBuffer *buffer);
+
+  virtual size_t DoRead(void *buffer, size_t size) = 0;
+  virtual off_t DoSeekInput(off_t pos, wxSeekMode mode) = 0;
+  virtual off_t DoTellInput() const = 0;
+
+ protected:
+  bool m_eof, m_i_destroybuf;
+  size_t m_lastread;
+  wxStreamBuffer *m_i_streambuf;
 };
 
-class wxOutputStream: public wxObject {
-  DECLARE_ABSTRACT_CLASS(wxOutputStream)
+class WXDLLEXPORT wxOutputStream {
  public:
   wxOutputStream();
   virtual ~wxOutputStream();
 
-  virtual wxOutputStream& Write(const void *buffer, size_t size) = 0;
+  virtual wxOutputStream& Write(const void *buffer, size_t size);
   wxOutputStream& Write(wxInputStream& stream_in);
 
-  virtual size_t SeekO(int pos, wxWhenceType whence = wxBeginPosition) = 0;
-  virtual size_t TellO() const = 0;
+  virtual off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart);
+  virtual off_t TellO() const;
 
-  virtual bool Bad() const = 0;
-  virtual size_t LastWrite() const = 0;
+  virtual bool Bad() const { return m_bad; }
+  virtual size_t LastWrite() const { return m_lastwrite; }
+  wxStreamBuffer *OutputStreamBuffer() { return m_o_streambuf; }
 
-  virtual void Sync() {}
-};
+  virtual void Sync();
 
-class wxStream: public wxInputStream, public wxOutputStream {
-  DECLARE_ABSTRACT_CLASS(wxStream)
- public:
-  wxStream() : wxInputStream(), wxOutputStream() {}
-  virtual ~wxStream() {}
+  wxOutputStream& operator<<(wxInputStream& out) { return Write(out); }
+  wxOutputStream& operator<<(const char *string);
+  wxOutputStream& operator<<(wxString& string);
+  wxOutputStream& operator<<(char c);
+  wxOutputStream& operator<<(short i);
+  wxOutputStream& operator<<(int i);
+  wxOutputStream& operator<<(long i);
+  wxOutputStream& operator<<(double f);
+
+  wxOutputStream& operator<<(float f) { return operator<<((double)f); }
+  wxOutputStream& operator<<(unsigned char c) { return operator<<((char)c); }
+  wxOutputStream& operator<<(unsigned short i) { return operator<<((short)i); }
+  wxOutputStream& operator<<(unsigned int i) { return operator<<((int)i); }
+  wxOutputStream& operator<<(unsigned long i) { return operator<<((long)i); }
+
+  wxOutputStream& operator<<( __wxOutputManip func) { return func(*this); }
+
+ protected:
+  friend class wxStreamBuffer;
+  friend class wxFilterOutputStream;
+
+  wxOutputStream(wxStreamBuffer *buffer);
+
+  virtual size_t DoWrite(const void *buffer, size_t size) = 0;
+  virtual off_t DoSeekOutput(off_t pos, wxSeekMode mode) = 0;
+  virtual off_t DoTellOutput() const = 0;
+
+ protected:
+  bool m_bad, m_o_destroybuf;
+  size_t m_lastwrite;
+  wxStreamBuffer *m_o_streambuf;
 };
 
 /*
  * "Filter" streams
  */
 
-class wxFilterInputStream: public wxInputStream {
-  DECLARE_CLASS(wxFilterInputStream)
+class WXDLLEXPORT wxFilterInputStream: public wxInputStream {
  public:
   wxFilterInputStream(wxInputStream& stream);
   virtual ~wxFilterInputStream();
 
-  virtual wxInputStream& Read(void *buffer, size_t size)
-     { return m_parent_i_stream->Read(buffer, size); }
-  virtual size_t SeekI(int pos, wxWhenceType whence = wxBeginPosition)
-     { return m_parent_i_stream->SeekI(pos, whence); }
+  virtual char Peek() { return m_parent_i_stream->Peek(); }
 
   virtual bool Eof() const { return m_parent_i_stream->Eof(); } 
   virtual size_t LastRead() const { return m_parent_i_stream->LastRead(); } 
+
+ protected:
+  virtual size_t DoRead(void *buffer, size_t size);
+  virtual off_t DoSeekInput(off_t pos, wxSeekMode mode);
+  virtual off_t DoTellInput() const;
+
  protected:
   wxInputStream *m_parent_i_stream;
 };
 
-class wxFilterOutputStream: public wxOutputStream {
-  DECLARE_CLASS(wxFilterOutputStream)
+class WXDLLEXPORT wxFilterOutputStream: public wxOutputStream {
  public:
   wxFilterOutputStream(wxOutputStream& stream);
   virtual ~wxFilterOutputStream();
 
-  virtual wxOutputStream& Write(const void *buffer, size_t size)
-     { return m_parent_o_stream->Write(buffer, size); }
-  virtual size_t SeekO(int pos, wxWhenceType whence = wxBeginPosition)
-     { return m_parent_o_stream->SeekO(pos, whence); }
-
   virtual bool Bad() const { return m_parent_o_stream->Bad(); }
   virtual size_t LastWrite() const { return m_parent_o_stream->LastWrite(); }
 
+ protected:
+
+  // The forward is implicitely done by wxStreamBuffer.
+
+  virtual size_t DoWrite(const void *buffer, size_t size);
+  virtual off_t DoSeekOutput(off_t pos, wxSeekMode mode);
+  virtual off_t DoTellOutput() const;
+
  protected:
   wxOutputStream *m_parent_o_stream;
 };