Merged the wxPy_newswig branch into the HEAD branch (main trunk)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@24541 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/include/wx/wxPython/pyistream.h

@@ -0,0 +1,97 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        pyistream.h
+// Purpose:     Classes for managing wxInputStream <--> Python streams
+//
+// Author:      Robin Dunn
+//
+// Created:     25-Sept-2000
+// RCS-ID:      $Id$
+// Copyright:   (c) 2000 by Total Control Software
+// Licence:     wxWindows license
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef __PYISTREAM__
+#define __PYISTREAM__
+
+
+//----------------------------------------------------------------------
+// Handling of wxInputStreams by Joerg Baumann
+// See stream.i for implementations
+
+
+// C++ class wxPyInputStream to act as base for python class wxInputStream
+// You can use it in python like a python file object.
+class wxPyInputStream {
+public:
+    // underlying wxInputStream
+    wxInputStream* m_wxis;
+
+public:
+    wxPyInputStream(wxInputStream* wxis) : m_wxis(wxis) {}
+    ~wxPyInputStream();
+
+    // python file object interface for input files (most of it)
+    void close();
+    void flush();
+    bool eof();
+    PyObject* read(int size=-1);
+    PyObject* readline(int size=-1);
+    PyObject* readlines(int sizehint=-1);
+    void seek(int offset, int whence=0);
+    int tell();
+
+    /*   do these later?
+      bool isatty();
+      int fileno();
+      void truncate(int size=-1);
+      void write(wxString data);
+      void writelines(wxStringPtrList);
+    */
+
+    // wxInputStream methods that may come in handy...
+
+    char Peek()           { if (m_wxis) return m_wxis->Peek(); else return -1; }
+    char GetC()           { if (m_wxis) return m_wxis->GetC(); else return -1; }
+    size_t LastRead()     { if (m_wxis) return m_wxis->LastRead(); else return 0; }
+    bool CanRead()        { if (m_wxis) return m_wxis->CanRead(); else return FALSE; }
+    bool Eof()            { if (m_wxis) return m_wxis->Eof(); else return FALSE; }
+    bool Ungetch(char c)  { if (m_wxis) return m_wxis->Ungetch(c); else return FALSE; }
+
+    unsigned long SeekI(unsigned long pos, wxSeekMode mode)
+          { if (m_wxis) return m_wxis->SeekI(pos, mode); else return 0; }
+    unsigned long TellI() { if (m_wxis) return m_wxis->TellI(); else return 0; }
+};
+
+
+
+// This is a wxInputStream that wraps a Python file-like
+// object and calls the Python methods as needed.
+class wxPyCBInputStream : public wxInputStream {
+public:
+    ~wxPyCBInputStream();
+    virtual size_t GetSize() const;
+
+    // factory function
+    static wxPyCBInputStream* create(PyObject *py, bool block=TRUE);
+
+protected:
+    // can only be created via the factory
+    wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block);
+
+    // wxStreamBase methods
+    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 off, wxSeekMode mode);
+    virtual off_t OnSysTell() const;
+
+    // helper
+    static PyObject* getMethod(PyObject* py, char* name);
+
+    PyObject* m_read;
+    PyObject* m_seek;
+    PyObject* m_tell;
+    bool      m_block;
+};
+
+//----------------------------------------------------------------------
+#endif