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* New wxStreams (to be documented), new classes: wxBufferedStreams,

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wxTextStreams


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2962 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Guilhem Lavaux
1999-07-07 17:45:35 +00:00
parent 32d4bfd16c
commit fae05df5a9
24 changed files with 1088 additions and 602 deletions
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267
include/wx/stream.h
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@@ -34,85 +34,6 @@ typedef wxOutputStream& (*__wxOutputManip)(wxOutputStream&);
WXDLLEXPORT wxOutputStream& wxEndL(wxOutputStream& o_stream);
// ---------------------------------------------------------------------------
// Stream buffer
// ---------------------------------------------------------------------------
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;
};
// ---------------------------------------------------------------------------
// wxStream: base classes
// ---------------------------------------------------------------------------
@@ -138,7 +59,6 @@ class WXDLLEXPORT wxStreamBase {
virtual size_t StreamSize() const { return ~((size_t)0); }
protected:
friend class wxStreamBuffer;
virtual size_t OnSysRead(void *buffer, size_t bufsize);
virtual size_t OnSysWrite(const void *buffer, size_t bufsize);
@@ -146,6 +66,8 @@ class WXDLLEXPORT wxStreamBase {
virtual off_t OnSysTell() const;
protected:
friend class wxStreamBuffer;
size_t m_lastcount;
wxStreamError m_lasterror;
};
@@ -153,7 +75,6 @@ class WXDLLEXPORT wxStreamBase {
class WXDLLEXPORT wxInputStream: public wxStreamBase {
public:
wxInputStream();
wxInputStream(wxStreamBuffer *sbuf);
virtual ~wxInputStream();
// IO functions
@@ -161,78 +82,56 @@ class WXDLLEXPORT wxInputStream: public wxStreamBase {
char GetC();
virtual wxInputStream& Read(void *buffer, size_t size);
wxInputStream& Read(wxOutputStream& stream_out);
wxString ReadLine();
// Position functions
off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart);
off_t TellI() const;
virtual off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart);
virtual off_t TellI() const;
// State functions
wxStreamBuffer *InputStreamBuffer() { return m_i_streambuf; }
size_t LastRead() { return wxStreamBase::m_lastcount; }
virtual size_t LastRead() { return wxStreamBase::m_lastcount; }
// Ungetch
size_t Ungetch(void *buffer, size_t size);
bool Ungetch(char c);
// 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; }
#if wxUSE_SERIAL
wxInputStream& operator>>(wxObject *& obj);
#endif
wxInputStream& operator>>( __wxInputManip func) { return func(*this); }
protected:
bool m_i_destroybuf;
wxStreamBuffer *m_i_streambuf;
// Ungetch managers
char *m_wback;
size_t m_wbacksize;
size_t m_wbackcur;
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);
void WriteLine(const wxString& line);
off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart);
off_t TellO() const;
virtual off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart);
virtual off_t TellO() const;
size_t LastWrite() const { return wxStreamBase::m_lastcount; }
wxStreamBuffer *OutputStreamBuffer() { return m_o_streambuf; }
virtual size_t LastWrite() const { return wxStreamBase::m_lastcount; }
void Sync();
virtual 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); }
#if wxUSE_SERIAL
wxOutputStream& operator<<(wxObject& obj);
#endif
wxOutputStream& operator<<( __wxOutputManip func) { return func(*this); }
protected:
bool m_o_destroybuf;
wxStreamBuffer *m_o_streambuf;
};
// ---------------------------------------------------------------------------
@@ -267,6 +166,130 @@ class WXDLLEXPORT wxFilterOutputStream: public wxOutputStream {
wxOutputStream *m_parent_o_stream;
};
// ---------------------------------------------------------------------------
// Stream buffer
// ---------------------------------------------------------------------------
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);
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:
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;
};
// ---------------------------------------------------------------------------
// wxBufferedStreams
// ---------------------------------------------------------------------------
class wxBufferedInputStream: public wxFilterInputStream {
public:
wxBufferedInputStream(wxInputStream& stream);
~wxBufferedInputStream();
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;
protected:
wxStreamBuffer *m_i_streambuf;
};
class 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();
wxStreamBuffer *OutputStreamBuffer() const { return m_o_streambuf; }
protected:
size_t OnSysWrite(const void *buffer, size_t bufsize);
off_t OnSysSeek(off_t seek, wxSeekMode mode);
off_t OnSysTell() const;
protected:
wxStreamBuffer *m_o_streambuf;
};
#endif
// wxUSE_STREAMS