X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a533f5c122c27b44a80b4eef2bd907a44bec8b70..b6fa52db667283fea7eaba7abe3dc48b8631f360:/include/wx/stream.h

diff --git a/include/wx/stream.h b/include/wx/stream.h
index b5920ea8ce..2e57b4ce7b 100644
--- a/include/wx/stream.h
+++ b/include/wx/stream.h
@@ -35,234 +35,291 @@ typedef wxOutputStream& (*__wxOutputManip)(wxOutputStream&);
 WXDLLEXPORT wxOutputStream& wxEndL(wxOutputStream& o_stream);
 
 // ---------------------------------------------------------------------------
-// Stream buffer
+// wxStream: base classes
 // ---------------------------------------------------------------------------
 
-class WXDLLEXPORT wxStreamBuffer {
- public:
-  typedef enum {
-    read = 0, write, read_write
-  } BufMode;
-
-  // -----------
-  // ctor & dtor
-  // -----------
-  wxStreamBuffer(wxStreamBase& stream, BufMode mode);
-  wxStreamBuffer(BufMode mode);
-  wxStreamBuffer(const wxStreamBuffer& buf);
-  ~wxStreamBuffer();
-
-  // -----------
-  // Filtered IO
-  // -----------
-  size_t Read(void *buffer, size_t size);
-  size_t Read(wxStreamBuffer *buf);
-  size_t Write(const void *buffer, size_t size);
-  size_t Write(wxStreamBuffer *buf);
-
-  size_t WriteBack(const char *buffer, size_t size);
-  bool WriteBack(char c);
-  char GetChar();
-  void PutChar(char c);
-  off_t Tell() const;
-  off_t Seek(off_t pos, wxSeekMode mode);
-
-  // --------------
-  // Buffer control
-  // --------------
-  void ResetBuffer();
-  void SetBufferIO(char *buffer_start, char *buffer_end);
-  void SetBufferIO(size_t bufsize);
-  char *GetBufferStart() const { return m_buffer_start; }
-  char *GetBufferEnd() const { return m_buffer_end; }
-  char *GetBufferPos() const { return m_buffer_pos; }
-  off_t GetIntPosition() const { return m_buffer_pos-m_buffer_start; }
-  void SetIntPosition(off_t pos) { m_buffer_pos = m_buffer_start+pos; }
-  size_t GetLastAccess() const { return m_buffer_end-m_buffer_start; }
-
-  void Fixed(bool fixed) { m_fixed = fixed; }
-  void Flushable(bool f) { m_flushable = f; }
-
-  bool FlushBuffer();
-  bool FillBuffer();
-  size_t GetDataLeft();
-
-  // --------------
-  // Administration
-  // --------------
-  wxStreamBase *Stream() { return m_stream; }
-
- protected:
-  char *AllocSpaceWBack(size_t needed_size);
-  size_t GetWBack(char *buf, size_t bsize);
-
-  void GetFromBuffer(void *buffer, size_t size);
-  void PutToBuffer(const void *buffer, size_t size);
-
- protected:
-  char *m_buffer_start, *m_buffer_end, *m_buffer_pos;
-  size_t m_buffer_size;
-
-  char *m_wback;
-  size_t m_wbacksize, m_wbackcur;
-
-  bool m_fixed, m_flushable;
-
-  wxStreamBase *m_stream;
-  BufMode m_mode;
-  bool m_destroybuf, m_destroystream;
-};
+typedef enum
+{
+  wxSTREAM_NO_ERROR = 0,
+  wxSTREAM_NO_ERR = wxSTREAM_NO_ERROR,
+  wxSTREAM_NOERROR = wxSTREAM_NO_ERROR,
 
-// ---------------------------------------------------------------------------
-// wxStream: base classes
-// ---------------------------------------------------------------------------
+  wxSTREAM_EOF,
+
+  wxSTREAM_WRITE_ERROR,
+  wxSTREAM_WRITE_ERR = wxSTREAM_WRITE_ERROR,
+
+  wxSTREAM_READ_ERROR,
+  wxSTREAM_READ_ERR = wxSTREAM_READ_ERROR
 
-#define wxStream_NOERROR    wxSTR_NOERROR
-#define wxStream_EOF        wxSTR_EOF
-#define wxStream_WRITE_ERR  wxSTR_WRITE_ERROR
-#define wxStream_READ_ERR   wxSTR_READ_ERROR
-  
-typedef enum {
-  wxStream_NOERROR = 0,
-  wxStream_EOF,
-  wxStream_WRITE_ERR,
-  wxStream_READ_ERR
 } wxStreamError;
 
-class WXDLLEXPORT wxStreamBase {
- public:
-  wxStreamBase();
-  virtual ~wxStreamBase();
+// compatibility
+#define wxStream_NOERROR    wxSTREAM_NOERROR
+#define wxStream_EOF        wxSTREAM_EOF
+#define wxStream_WRITE_ERR  wxSTREAM_WRITE_ERROR
+#define wxStream_READ_ERR   wxSTREAM_READ_ERROR
+
+class WXDLLEXPORT wxStreamBase
+{
+public:
+    wxStreamBase();
+    virtual ~wxStreamBase();
+
+    // error testing
+    wxStreamError LastError() const { return m_lasterror; }
+    wxStreamError GetLastError() const { return m_lasterror; }
+    bool IsOk() const { return LastError() == wxSTREAM_NOERROR; }
+    bool operator!() const { return LastError() != wxSTREAM_NOERROR; }
+
+    virtual size_t GetSize() const { return ~((size_t)0); }
+    size_t StreamSize() const { return GetSize(); }
+
+protected:
+    virtual size_t OnSysRead(void *buffer, size_t bufsize);
+    virtual size_t OnSysWrite(const void *buffer, size_t bufsize);
+    virtual off_t OnSysSeek(off_t seek, wxSeekMode mode);
+    virtual off_t OnSysTell() const;
+
+    friend class wxStreamBuffer;
+
+    size_t m_lastcount;
+    wxStreamError m_lasterror;
+};
 
-  wxStreamError LastError() const { return m_lasterror; }
-  virtual size_t StreamSize() const { return ~((size_t)0); }
+class WXDLLEXPORT wxInputStream: public wxStreamBase
+{
+public:
+    wxInputStream();
+    virtual ~wxInputStream();
 
- protected:
-  friend class wxStreamBuffer;
+    // is the stream at EOF?
+    virtual bool Eof() const;
 
-  virtual size_t OnSysRead(void *buffer, size_t bufsize);
-  virtual size_t OnSysWrite(const void *buffer, size_t bufsize);
-  virtual off_t OnSysSeek(off_t seek, wxSeekMode mode);
-  virtual off_t OnSysTell() const;
+    // IO functions
+    virtual char Peek();
+    char GetC();
+    virtual wxInputStream& Read(void *buffer, size_t size);
+    wxInputStream& Read(wxOutputStream& stream_out);
 
- protected:
-  size_t m_lastcount;
-  wxStreamError m_lasterror;
-};
+    // Position functions
+    virtual off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart);
+    virtual off_t TellI() const;
 
-class WXDLLEXPORT wxInputStream: public wxStreamBase {
- public:
-  wxInputStream();
-  wxInputStream(wxStreamBuffer *sbuf);
-  virtual ~wxInputStream();
-
-  // IO functions
-  virtual char Peek();
-  char GetC();
-  virtual wxInputStream& Read(void *buffer, size_t size);
-  wxInputStream& Read(wxOutputStream& stream_out);
-
-  // Position functions
-  off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart);
-  off_t TellI() const;
-
-  // State functions
-  wxStreamBuffer *InputStreamBuffer() { return m_i_streambuf; }
-  size_t LastRead() { return wxStreamBase::m_lastcount; }
-
-  // Operators
-  wxInputStream& operator>>(wxOutputStream& out) { return Read(out); }
-  wxInputStream& operator>>(wxString& line);
-  wxInputStream& operator>>(char& c);
-  wxInputStream& operator>>(signed short& i);
-  wxInputStream& operator>>(signed int& i);
-  wxInputStream& operator>>(signed long& i);
-  wxInputStream& operator>>(unsigned char& c);
-  wxInputStream& operator>>(unsigned short& i);
-  wxInputStream& operator>>(unsigned int& i);
-  wxInputStream& operator>>(unsigned long& i);
-  wxInputStream& operator>>(double& i);
-  wxInputStream& operator>>(float& f) { double d; operator>>((double&)d); f = (float)d; return *this; }
+    // State functions
+    virtual size_t LastRead() { return wxStreamBase::m_lastcount; }
+
+    // Ungetch
+    size_t Ungetch(const void *buffer, size_t size);
+    bool Ungetch(char c);
+
+    // Operators
+    wxInputStream& operator>>(wxOutputStream& out) { return Read(out); }
 #if wxUSE_SERIAL
-  wxInputStream& operator>>(wxObject *& obj);
+    wxInputStream& operator>>(wxObject *& obj);
 #endif
-  wxInputStream& operator>>( __wxInputManip func) { return func(*this); }
+    wxInputStream& operator>>( __wxInputManip func) { return func(*this); }
+
+protected:
+    // Ungetch managers
+    char *m_wback;
+    size_t m_wbacksize;
+    size_t m_wbackcur;
 
- protected:
-  bool m_i_destroybuf;
-  wxStreamBuffer *m_i_streambuf;
+    char *AllocSpaceWBack(size_t needed_size);
+    size_t GetWBack(char *buf, size_t bsize);
 };
 
-class WXDLLEXPORT wxOutputStream: public wxStreamBase {
- public:
-  wxOutputStream();
-  wxOutputStream(wxStreamBuffer *sbuf);
-  virtual ~wxOutputStream();
-
-  virtual wxOutputStream& Write(const void *buffer, size_t size);
-  wxOutputStream& Write(wxInputStream& stream_in);
-
-  off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart);
-  off_t TellO() const;
-
-  size_t LastWrite() const { return wxStreamBase::m_lastcount; }
-  wxStreamBuffer *OutputStreamBuffer() { return m_o_streambuf; }
-
-  void Sync();
-
-  wxOutputStream& operator<<(wxInputStream& out) { return Write(out); }
-  wxOutputStream& operator<<(const char *string);
-  wxOutputStream& operator<<(wxString& string);
-  wxOutputStream& operator<<(char c);
-  wxOutputStream& operator<<(signed short i);
-  wxOutputStream& operator<<(signed int i);
-  wxOutputStream& operator<<(signed long i);
-  wxOutputStream& operator<<(unsigned char c);
-  wxOutputStream& operator<<(unsigned short i);
-  wxOutputStream& operator<<(unsigned int i);
-  wxOutputStream& operator<<(unsigned long i);
-  wxOutputStream& operator<<(double f);
-  wxOutputStream& operator<<(float f) { return operator<<((double)f); }
+class WXDLLEXPORT wxOutputStream: public wxStreamBase
+{
+public:
+    wxOutputStream();
+    virtual ~wxOutputStream();
+
+    void PutC(char c);
+    virtual wxOutputStream& Write(const void *buffer, size_t size);
+    wxOutputStream& Write(wxInputStream& stream_in);
+
+    virtual off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart);
+    virtual off_t TellO() const;
+
+    virtual size_t LastWrite() const { return wxStreamBase::m_lastcount; }
+
+    virtual void Sync();
+
+    wxOutputStream& operator<<(wxInputStream& out) { return Write(out); }
 #if wxUSE_SERIAL
-  wxOutputStream& operator<<(wxObject& obj);
+    wxOutputStream& operator<<(wxObject& obj);
 #endif
-  wxOutputStream& operator<<( __wxOutputManip func) { return func(*this); }
+    wxOutputStream& operator<<( __wxOutputManip func) { return func(*this); }
+};
+
+// ---------------------------------------------------------------------------
+// A stream for measuring streamed output
+// ---------------------------------------------------------------------------
+
+class WXDLLEXPORT wxCountingOutputStream: public wxOutputStream
+{
+public:
+    wxCountingOutputStream();
+
+    size_t GetSize() const;
+    bool Ok() const { return TRUE; }
+
+protected:
+    size_t OnSysWrite(const void *buffer, size_t size);
+    off_t OnSysSeek(off_t pos, wxSeekMode mode);
+    off_t OnSysTell() const;
 
- protected:
-  bool m_o_destroybuf;
-  wxStreamBuffer *m_o_streambuf;
+    size_t m_currentPos;
 };
 
 // ---------------------------------------------------------------------------
 // "Filter" streams
 // ---------------------------------------------------------------------------
 
-class WXDLLEXPORT wxFilterInputStream: public wxInputStream {
- public:
-  wxFilterInputStream();
-  wxFilterInputStream(wxInputStream& stream);
-  ~wxFilterInputStream();
+class WXDLLEXPORT wxFilterInputStream: public wxInputStream
+{
+public:
+    wxFilterInputStream();
+    wxFilterInputStream(wxInputStream& stream);
+    ~wxFilterInputStream();
 
-  char Peek() { return m_parent_i_stream->Peek(); }
+    char Peek() { return m_parent_i_stream->Peek(); }
 
-  wxStreamError LastError() const { return m_parent_i_stream->LastError(); }
-  size_t StreamSize() const { return m_parent_i_stream->StreamSize(); }
+    size_t GetSize() const { return m_parent_i_stream->GetSize(); }
 
- protected:
-  wxInputStream *m_parent_i_stream;
+protected:
+    wxInputStream *m_parent_i_stream;
 };
 
-class WXDLLEXPORT wxFilterOutputStream: public wxOutputStream {
- public:
-  wxFilterOutputStream();
-  wxFilterOutputStream(wxOutputStream& stream);
-  ~wxFilterOutputStream();
+class WXDLLEXPORT wxFilterOutputStream: public wxOutputStream
+{
+public:
+    wxFilterOutputStream();
+    wxFilterOutputStream(wxOutputStream& stream);
+    ~wxFilterOutputStream();
+
+    size_t GetSize() const { return m_parent_o_stream->GetSize(); }
+
+protected:
+    wxOutputStream *m_parent_o_stream;
+};
+
+// ---------------------------------------------------------------------------
+// Stream buffer
+// ---------------------------------------------------------------------------
+
+class WXDLLEXPORT wxStreamBuffer
+{
+public:
+    typedef enum {
+        read = 0, write, read_write
+    } BufMode;
+
+    wxStreamBuffer(wxStreamBase& stream, BufMode mode);
+    wxStreamBuffer(BufMode mode);
+    wxStreamBuffer(const wxStreamBuffer& buf);
+    ~wxStreamBuffer();
+
+    // Filtered IO
+    size_t Read(void *buffer, size_t size);
+    size_t Read(wxStreamBuffer *buf);
+    size_t Write(const void *buffer, size_t size);
+    size_t Write(wxStreamBuffer *buf);
+
+    char Peek();
+    char GetChar();
+    void PutChar(char c);
+    off_t Tell() const;
+    off_t Seek(off_t pos, wxSeekMode mode);
+
+    // Buffer control
+    void ResetBuffer();
+    void SetBufferIO(char *buffer_start, char *buffer_end);
+    void SetBufferIO(size_t bufsize);
+    char *GetBufferStart() const { return m_buffer_start; }
+    char *GetBufferEnd() const { return m_buffer_end; }
+    char *GetBufferPos() const { return m_buffer_pos; }
+    off_t GetIntPosition() const { return m_buffer_pos-m_buffer_start; }
+    void SetIntPosition(off_t pos) { m_buffer_pos = m_buffer_start+pos; }
+    size_t GetLastAccess() const { return m_buffer_end-m_buffer_start; }
+
+    void Fixed(bool fixed) { m_fixed = fixed; }
+    void Flushable(bool f) { m_flushable = f; }
+
+    bool FlushBuffer();
+    bool FillBuffer();
+    size_t GetDataLeft();
+
+    // Misc.
+    wxStreamBase *Stream() { return m_stream; }
+
+protected:
+    void GetFromBuffer(void *buffer, size_t size);
+    void PutToBuffer(const void *buffer, size_t size);
+
+    char *m_buffer_start, *m_buffer_end, *m_buffer_pos;
+    size_t m_buffer_size;
+
+    bool m_fixed, m_flushable;
+
+    wxStreamBase *m_stream;
+    BufMode m_mode;
+    bool m_destroybuf, m_destroystream;
+};
+
+// ---------------------------------------------------------------------------
+// wxBufferedStreams
+// ---------------------------------------------------------------------------
+
+class WXDLLEXPORT wxBufferedInputStream: public wxFilterInputStream
+{
+public:
+    wxBufferedInputStream(wxInputStream& stream);
+    ~wxBufferedInputStream();
+
+    char Peek();
+    wxInputStream& Read(void *buffer, size_t size);
+
+    // Position functions
+    off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart);
+    off_t TellI() const;
+
+    wxStreamBuffer *InputStreamBuffer() const { return m_i_streambuf; }
+
+protected:
+    size_t OnSysRead(void *buffer, size_t bufsize);
+    off_t OnSysSeek(off_t seek, wxSeekMode mode);
+    off_t OnSysTell() const;
+
+    wxStreamBuffer *m_i_streambuf;
+};
+
+class WXDLLEXPORT wxBufferedOutputStream: public wxFilterOutputStream
+{
+public:
+    wxBufferedOutputStream(wxOutputStream& stream);
+    ~wxBufferedOutputStream();
+
+    wxOutputStream& Write(const void *buffer, size_t size);
+
+    // Position functions
+    off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart);
+    off_t TellO() const;
+
+    void Sync();
+
+    size_t GetSize() const;
+
+    wxStreamBuffer *OutputStreamBuffer() const { return m_o_streambuf; }
 
-  wxStreamError LastError() const { return m_parent_o_stream->LastError(); }
-  size_t StreamSize() const { return m_parent_o_stream->StreamSize(); }
+protected:
+    size_t OnSysWrite(const void *buffer, size_t bufsize);
+    off_t OnSysSeek(off_t seek, wxSeekMode mode);
+    off_t OnSysTell() const;
 
- protected:
-  wxOutputStream *m_parent_o_stream;
+    wxStreamBuffer *m_o_streambuf;
 };
 
 #endif