wxPython/src/streams.i

/////////////////////////////////////////////////////////////////////////////
// Name:        streams.i
// Purpose:     SWIG definitions of the wxFileSystem family of classes
//
// Author:      Joerg Baumann
//
// Created:     25-Sept-2000
// RCS-ID:      $Id$
// Copyright:   (c) 2000 by Joerg Baumann
// Licence:     wxWindows license
/////////////////////////////////////////////////////////////////////////////

%module streams

%{
#include "helpers.h"
#include <wx/stream.h>
#include <wx/list.h>
%}

//----------------------------------------------------------------------

%include typemaps.i
%include my_typemaps.i

// Import some definitions of other classes, etc.
%import _defs.i

%pragma(python) code = "import wx"
%pragma(python) code = "import string"

//----------------------------------------------------------------------
// typemaps for wxInputStream
%typemap(python,in) wxInputStream *stream {
    if (PyInstance_Check($source)) {
        wxPyInputStream* ptr;
        if (SWIG_GetPtrObj($source, (void **) &ptr,"_wxPyInputStream_p")) {
            PyErr_SetString(PyExc_TypeError,"Expected _wxInputStream_p.");
            return NULL;
        }
        $target = ptr->wxi;
    } else {
        PyErr_SetString(PyExc_TypeError,"Expected _wxInputStream_p.");
        return NULL;
    }
}


// typemaps for wxInputStream
%typemap(python,out) wxInputStream* {
    wxPyInputStream * _ptr = NULL;

    if ($source) {
        _ptr = new wxPyInputStream($source);
    }
    if (_ptr) {
        char    swigptr[64];
        SWIG_MakePtr(swigptr, _ptr, "_wxPyInputStream_p");

        PyObject* classobj = PyDict_GetItemString(wxPython_dict, "wxInputStreamPtr");
        if (! classobj) {
            Py_INCREF(Py_None);
            $target = Py_None;
        } else {
            PyObject* arg = Py_BuildValue("(s)", swigptr);
            $target = PyInstance_New(classobj, arg, NULL);
            Py_DECREF(arg);

            // set ThisOwn
            PyObject* one = PyInt_FromLong(1);
            PyObject_SetAttrString($target, "thisown", one);
            Py_DECREF(one);
        }
    } else {
        Py_INCREF(Py_None);
        $target = Py_None;
    }
}

//----------------------------------------------------------------------

%{  // C++
// definitions of wxStringPtrList and wxPyInputStream
#include <wx/listimpl.cpp>
WX_DEFINE_LIST(wxStringPtrList);


void wxPyInputStream::close() {
    /* do nothing */
}

void wxPyInputStream::flush() {
    /*do nothing*/
}

bool wxPyInputStream::eof() {
    if (wxi)
        return wxi->Eof();
    else
        return TRUE;
}

wxPyInputStream::~wxPyInputStream() {
    /*do nothing*/
}

wxString* wxPyInputStream::read(int size) {
    wxString* s = NULL;
    const int BUFSIZE = 1024;

    // check if we have a real wxInputStream to work with
    if (!wxi) {
        PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream below");
        return NULL;
    }

    if (size < 0) {
        // init buffers
        char * buf = new char[BUFSIZE];
        if (!buf) {
            PyErr_NoMemory();
            return NULL;
        }

        s = new wxString();
        if (!s) {
            delete buf;
            PyErr_NoMemory();
            return NULL;
        }

        // read until EOF
        wxPy_BEGIN_ALLOW_THREADS;
        while (! wxi->Eof()) {
            wxi->Read(buf, BUFSIZE);
            //*s += wxString(buf, wxi->LastRead());
            s->Append(buf, wxi->LastRead());
        }
        delete buf;
        wxPy_END_ALLOW_THREADS;

        // error check
        if (wxi->LastError() == wxSTREAM_READ_ERROR) {
            delete s;
            PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
            return NULL;
        }

    } else {  // Read only size number of characters
        s = new wxString;
        if (!s) {
            PyErr_NoMemory();
            return NULL;
        }

        // read size bytes
        wxPy_BEGIN_ALLOW_THREADS;
        wxi->Read(s->GetWriteBuf(size+1), size);
        s->UngetWriteBuf(wxi->LastRead());
        wxPy_END_ALLOW_THREADS;

        // error check
        if (wxi->LastError() == wxSTREAM_READ_ERROR) {
            delete s;
            PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
            return NULL;
        }
    }
    return s;
}


wxString* wxPyInputStream::readline (int size) {
    // check if we have a real wxInputStream to work with
    if (!wxi) {
        PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream below");
        return NULL;
    }

    // init buffer
    int i;
    char ch;
    wxString* s = new wxString;
    if (!s) {
        PyErr_NoMemory();
        return NULL;
    }

    // read until \n or byte limit reached
    wxPy_BEGIN_ALLOW_THREADS;
    for (i=ch=0; (ch != '\n') && (!wxi->Eof()) && ((size < 0) || (i < size)); i++) {
        *s += ch = wxi->GetC();
    }
    wxPy_END_ALLOW_THREADS;

    // errorcheck
    if (wxi->LastError() == wxSTREAM_READ_ERROR) {
        delete s;
        PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
        return NULL;
    }
    return s;
}


wxStringPtrList* wxPyInputStream::readlines (int sizehint) {
    // check if we have a real wxInputStream to work with
    if (!wxi) {
        PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream below");
        return NULL;
    }

    // init list
    wxStringPtrList* l = new wxStringPtrList();
    if (!l) {
        PyErr_NoMemory();
        return NULL;
    }

    // read sizehint bytes or until EOF
    wxPy_BEGIN_ALLOW_THREADS;
    int i;
    for (i=0; (!wxi->Eof()) && ((sizehint < 0) || (i < sizehint));) {
        wxString* s = readline();
        if (s == NULL) {
            l->DeleteContents(TRUE);
            l->Clear();
            return NULL;
        }
        l->Append(s);
        i = i + s->Length();
    }
    wxPy_END_ALLOW_THREADS;

    // error check
    if (wxi->LastError() == wxSTREAM_READ_ERROR) {
        l->DeleteContents(TRUE);
        l->Clear();
        PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
        return NULL;
    }
    return l;
}


void wxPyInputStream::seek(int offset, int whence) {
    if (wxi)
        wxi->SeekI(offset, wxSeekMode(whence));
}

int wxPyInputStream::tell(){
    if (wxi)
        return wxi->TellI();
}


// wxInputStream which operates on a Python file-like object
class wxPyCBInputStream : public wxInputStream {
protected:
    PyObject* read;
    PyObject* seek;
    PyObject* tell;
    PyObject* py;

    virtual size_t OnSysRead(void *buffer, size_t bufsize) {
        if (bufsize == 0)
            return 0;

        bool doSave = wxPyRestoreThread();
        PyObject* arglist = Py_BuildValue("(i)", bufsize);
        PyObject* result = PyEval_CallObject(read, arglist);
        Py_DECREF(arglist);

        size_t o = 0;
        if ((result != NULL) && PyString_Check(result)) {
            o = PyString_Size(result);
            if (o == 0)
                m_lasterror = wxSTREAM_EOF;
            if (o > bufsize)
                o = bufsize;
            strncpy((char*)buffer, PyString_AsString(result), o);
            Py_DECREF(result);

        }
        else
            m_lasterror = wxSTREAM_READ_ERROR;
        wxPySaveThread(doSave);
        m_lastcount = o;
        return o;
    }

    virtual size_t OnSysWrite(const void *buffer, size_t bufsize){
        m_lasterror = wxSTREAM_WRITE_ERROR;
        return 0;
    }

    virtual off_t OnSysSeek(off_t off, wxSeekMode mode){
        bool doSave = wxPyRestoreThread();
        PyObject*arglist = Py_BuildValue("(ii)", off, mode);
        PyObject*result = PyEval_CallObject(seek, arglist);
        Py_DECREF(arglist);
        Py_XDECREF(result);
        wxPySaveThread(doSave);
        return OnSysTell();
    }

    virtual off_t OnSysTell() const{
        bool doSave = wxPyRestoreThread();
        PyObject* arglist = Py_BuildValue("()");
        PyObject* result = PyEval_CallObject(tell, arglist);
        Py_DECREF(arglist);
        off_t o = 0;
        if (result != NULL) {
            o = PyInt_AsLong(result);
            Py_DECREF(result);
        };
        wxPySaveThread(doSave);
        return o;
    }

    wxPyCBInputStream(PyObject *p, PyObject *r, PyObject *s, PyObject *t)
        : py(p), read(r), seek(s), tell(t)
        {}

public:
    ~wxPyCBInputStream() {
        bool doSave = wxPyRestoreThread();
        Py_XDECREF(py);
        Py_XDECREF(read);
        Py_XDECREF(seek);
        Py_XDECREF(tell);
        wxPySaveThread(doSave);
    }

    virtual size_t GetSize() {
        if (seek && tell) {
            off_t temp = OnSysTell();
            off_t ret = OnSysSeek(0, wxFromEnd);
            OnSysSeek(temp, wxFromStart);
            return ret;
        }
        else
            return 0;
    }

    static wxPyCBInputStream* create(PyObject *py) {
        PyObject* read;
        PyObject* seek;
        PyObject* tell;

        if (!PyInstance_Check(py) && !PyFile_Check(py)) {
            PyErr_SetString(PyExc_TypeError, "Not a file-like object");
            Py_XDECREF(py);
            return NULL;
        }
        read = getMethod(py, "read");
        seek = getMethod(py, "seek");
        tell = getMethod(py, "tell");

        if (!read) {
            PyErr_SetString(PyExc_TypeError, "Not a file-like object");
            Py_XDECREF(py);
            Py_XDECREF(read);
            Py_XDECREF(seek);
            Py_XDECREF(tell);
            return NULL;
        }
        return new wxPyCBInputStream(py, read, seek, tell);
    }

    static PyObject* getMethod(PyObject* py, char* name) {
        if (!PyObject_HasAttrString(py, name))
            return NULL;
        PyObject* o = PyObject_GetAttrString(py, name);
        if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
            Py_DECREF(o);
            return NULL;
        }
        return o;
    }

protected:

};

%}  // End of the C++
//----------------------------------------------------------------------


// block threads for wxPyInputStream  ****  WHY?
%except(python) {
    $function
}


// wxStringPtrList* to python list of strings typemap
%typemap(python, out) wxStringPtrList* {
    if ($source) {
        $target = PyList_New($source->GetCount());
        wxStringPtrList::Node *node = $source->GetFirst();
        for (int i=0; node; i++) {
            wxString *s = node->GetData();
            PyList_SetItem($target, i, PyString_FromStringAndSize(s->c_str(), s->Len()));
            node = node->GetNext();
            delete s;
        }
        delete $source;
    }
    else
        $target=0;
}


// transport exceptions via %target=0
%typemap(python, out) wxPyInputStream* {
    char _ptemp[128];
    if ($source) {
        SWIG_MakePtr(_ptemp, (char *) $source,"_wxPyInputStream_p");
        $target = Py_BuildValue("s",_ptemp);
    }
    else
        $target=0;
}


// transport exceptions via %target=0
%typemap(python, out) wxString* {
    if ($source) {
        $target = PyString_FromStringAndSize($source->c_str(), $source->Len());
        delete $source;
    }
    else
        $target=0;
}


%name(wxInputStream) class wxPyInputStream {
public:
    %addmethods {
        wxPyInputStream(PyObject* p) {
            wxInputStream* wxi = wxPyCBInputStream::create(p);
            if (wxi)
                return new wxPyInputStream(wxi);
            else
                return NULL;
        }
    }
    void close();
    void flush();
    bool eof();
    wxString* read(int size=-1);
    wxString* readline(int size=-1);
    wxStringPtrList* readlines(int sizehint=-1);
    void seek(int offset, int whence=0);
    int tell();
    /*
      bool isatty();
      int fileno();
      void truncate(int size=-1);
      void write(wxString data);
      void writelines(wxStringPtrList);
    */
}


// TODO:  make a more fully implemented file interface...
class wxOutputStream {
public:
    /*
      void close();
      void flush();
      wxString* read(int size=-1);
      wxString* readline(int size=-1);
      wxStringPtrList* readlines(int sizehint=-1);
      void seek(int offset, int whence=0);
      int tell();
      bool isatty();
      int fileno();
      void truncate(int size=-1);
      void write(wxString data);
      void writelines(wxStringPtrList);
    */

    %addmethods {
        void write(const wxString& str) {
            self->Write(str.c_str(), str.Length());
        }
    }
};


// restore except and typemaps
%typemap(python,out) wxStringPtrList*;
%typemap(python,out) wxPyInputStream*;
%typemap(python, out) wxString* {
    $target = PyString_FromStringAndSize($source->c_str(), $source->Len());
}
%except(python) {
    wxPy_BEGIN_ALLOW_THREADS;
    $function
    wxPy_END_ALLOW_THREADS;
}
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: streams.i
	3	// Purpose: SWIG definitions of the wxFileSystem family of classes
	4	//
	5	// Author: Joerg Baumann
	6	//
	7	// Created: 25-Sept-2000
	8	// RCS-ID: $Id$
	9	// Copyright: (c) 2000 by Joerg Baumann
	10	// Licence: wxWindows license
	11	/////////////////////////////////////////////////////////////////////////////
	12
	13	%module streams
	14
	15	%{
	16	#include "helpers.h"
	17	#include <wx/stream.h>
	18	#include <wx/list.h>
	19	%}
	20
	21	//----------------------------------------------------------------------
	22
	23	%include typemaps.i
	24	%include my_typemaps.i
	25
	26	// Import some definitions of other classes, etc.
	27	%import _defs.i
	28
	29	%pragma(python) code = "import wx"
	30	%pragma(python) code = "import string"
	31
	32	//----------------------------------------------------------------------
	33	// typemaps for wxInputStream
	34	%typemap(python,in) wxInputStream *stream {
	35	if (PyInstance_Check($source)) {
	36	wxPyInputStream* ptr;
	37	if (SWIG_GetPtrObj($source, (void **) &ptr,"_wxPyInputStream_p")) {
	38	PyErr_SetString(PyExc_TypeError,"Expected _wxInputStream_p.");
	39	return NULL;
	40	}
	41	$target = ptr->wxi;
	42	} else {
	43	PyErr_SetString(PyExc_TypeError,"Expected _wxInputStream_p.");
	44	return NULL;
	45	}
	46	}
	47
	48
	49	// typemaps for wxInputStream
	50	%typemap(python,out) wxInputStream* {
	51	wxPyInputStream * _ptr = NULL;
	52
	53	if ($source) {
	54	_ptr = new wxPyInputStream($source);
	55	}
	56	if (_ptr) {
	57	char swigptr[64];
	58	SWIG_MakePtr(swigptr, _ptr, "_wxPyInputStream_p");
	59
	60	PyObject* classobj = PyDict_GetItemString(wxPython_dict, "wxInputStreamPtr");
	61	if (! classobj) {
	62	Py_INCREF(Py_None);
	63	$target = Py_None;
	64	} else {
	65	PyObject* arg = Py_BuildValue("(s)", swigptr);
	66	$target = PyInstance_New(classobj, arg, NULL);
	67	Py_DECREF(arg);
	68
	69	// set ThisOwn
	70	PyObject* one = PyInt_FromLong(1);
	71	PyObject_SetAttrString($target, "thisown", one);
	72	Py_DECREF(one);
	73	}
	74	} else {
	75	Py_INCREF(Py_None);
	76	$target = Py_None;
	77	}
	78	}
	79
	80	//----------------------------------------------------------------------
	81
	82	%{ // C++
	83	// definitions of wxStringPtrList and wxPyInputStream
	84	#include <wx/listimpl.cpp>
	85	WX_DEFINE_LIST(wxStringPtrList);
	86
	87
	88	void wxPyInputStream::close() {
	89	/* do nothing */
	90	}
	91
	92	void wxPyInputStream::flush() {
	93	/do nothing/
	94	}
	95
	96	bool wxPyInputStream::eof() {
	97	if (wxi)
	98	return wxi->Eof();
	99	else
	100	return TRUE;
	101	}
	102
	103	wxPyInputStream::~wxPyInputStream() {
	104	/do nothing/
	105	}
	106
	107	wxString* wxPyInputStream::read(int size) {
	108	wxString* s = NULL;
	109	const int BUFSIZE = 1024;
	110
	111	// check if we have a real wxInputStream to work with
	112	if (!wxi) {
	113	PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream below");
	114	return NULL;
	115	}
	116
	117	if (size < 0) {
	118	// init buffers
	119	char * buf = new char[BUFSIZE];
	120	if (!buf) {
	121	PyErr_NoMemory();
	122	return NULL;
	123	}
	124
	125	s = new wxString();
	126	if (!s) {
	127	delete buf;
	128	PyErr_NoMemory();
	129	return NULL;
	130	}
	131
	132	// read until EOF
	133	wxPy_BEGIN_ALLOW_THREADS;
	134	while (! wxi->Eof()) {
	135	wxi->Read(buf, BUFSIZE);
	136	//*s += wxString(buf, wxi->LastRead());
	137	s->Append(buf, wxi->LastRead());
	138	}
	139	delete buf;
	140	wxPy_END_ALLOW_THREADS;
	141
	142	// error check
	143	if (wxi->LastError() == wxSTREAM_READ_ERROR) {
	144	delete s;
	145	PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
	146	return NULL;
	147	}
	148
	149	} else { // Read only size number of characters
	150	s = new wxString;
	151	if (!s) {
	152	PyErr_NoMemory();
	153	return NULL;
	154	}
	155
	156	// read size bytes
	157	wxPy_BEGIN_ALLOW_THREADS;
	158	wxi->Read(s->GetWriteBuf(size+1), size);
	159	s->UngetWriteBuf(wxi->LastRead());
	160	wxPy_END_ALLOW_THREADS;
	161
	162	// error check
	163	if (wxi->LastError() == wxSTREAM_READ_ERROR) {
	164	delete s;
	165	PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
	166	return NULL;
	167	}
	168	}
	169	return s;
	170	}
	171
	172
	173	wxString* wxPyInputStream::readline (int size) {
	174	// check if we have a real wxInputStream to work with
	175	if (!wxi) {
	176	PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream below");
	177	return NULL;
	178	}
	179
	180	// init buffer
	181	int i;
	182	char ch;
	183	wxString* s = new wxString;
	184	if (!s) {
	185	PyErr_NoMemory();
	186	return NULL;
	187	}
	188
	189	// read until \n or byte limit reached
	190	wxPy_BEGIN_ALLOW_THREADS;
	191	for (i=ch=0; (ch != '\n') && (!wxi->Eof()) && ((size < 0) \|\| (i < size)); i++) {
	192	*s += ch = wxi->GetC();
	193	}
	194	wxPy_END_ALLOW_THREADS;
	195
	196	// errorcheck
	197	if (wxi->LastError() == wxSTREAM_READ_ERROR) {
	198	delete s;
	199	PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
	200	return NULL;
	201	}
	202	return s;
	203	}
	204
	205
	206	wxStringPtrList* wxPyInputStream::readlines (int sizehint) {
	207	// check if we have a real wxInputStream to work with
	208	if (!wxi) {
	209	PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream below");
	210	return NULL;
	211	}
	212
	213	// init list
	214	wxStringPtrList* l = new wxStringPtrList();
	215	if (!l) {
	216	PyErr_NoMemory();
	217	return NULL;
	218	}
	219
	220	// read sizehint bytes or until EOF
	221	wxPy_BEGIN_ALLOW_THREADS;
	222	int i;
	223	for (i=0; (!wxi->Eof()) && ((sizehint < 0) \|\| (i < sizehint));) {
	224	wxString* s = readline();
	225	if (s == NULL) {
	226	l->DeleteContents(TRUE);
	227	l->Clear();
	228	return NULL;
	229	}
	230	l->Append(s);
	231	i = i + s->Length();
	232	}
	233	wxPy_END_ALLOW_THREADS;
	234
	235	// error check
	236	if (wxi->LastError() == wxSTREAM_READ_ERROR) {
	237	l->DeleteContents(TRUE);
	238	l->Clear();
	239	PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
	240	return NULL;
	241	}
	242	return l;
	243	}
	244
	245
	246	void wxPyInputStream::seek(int offset, int whence) {
	247	if (wxi)
	248	wxi->SeekI(offset, wxSeekMode(whence));
	249	}
	250
	251	int wxPyInputStream::tell(){
	252	if (wxi)
	253	return wxi->TellI();
	254	}
	255
	256
	257
	258	// wxInputStream which operates on a Python file-like object
	259	class wxPyCBInputStream : public wxInputStream {
	260	protected:
	261	PyObject* read;
	262	PyObject* seek;
	263	PyObject* tell;
	264	PyObject* py;
	265
	266	virtual size_t OnSysRead(void *buffer, size_t bufsize) {
	267	if (bufsize == 0)
	268	return 0;
	269
	270	bool doSave = wxPyRestoreThread();
	271	PyObject* arglist = Py_BuildValue("(i)", bufsize);
	272	PyObject* result = PyEval_CallObject(read, arglist);
	273	Py_DECREF(arglist);
	274
	275	size_t o = 0;
	276	if ((result != NULL) && PyString_Check(result)) {
	277	o = PyString_Size(result);
	278	if (o == 0)
	279	m_lasterror = wxSTREAM_EOF;
	280	if (o > bufsize)
	281	o = bufsize;
	282	strncpy((char*)buffer, PyString_AsString(result), o);
	283	Py_DECREF(result);
	284
	285	}
	286	else
	287	m_lasterror = wxSTREAM_READ_ERROR;
	288	wxPySaveThread(doSave);
	289	m_lastcount = o;
	290	return o;
	291	}
	292
	293	virtual size_t OnSysWrite(const void *buffer, size_t bufsize){
	294	m_lasterror = wxSTREAM_WRITE_ERROR;
	295	return 0;
	296	}
	297
	298	virtual off_t OnSysSeek(off_t off, wxSeekMode mode){
	299	bool doSave = wxPyRestoreThread();
	300	PyObject*arglist = Py_BuildValue("(ii)", off, mode);
	301	PyObject*result = PyEval_CallObject(seek, arglist);
	302	Py_DECREF(arglist);
	303	Py_XDECREF(result);
	304	wxPySaveThread(doSave);
	305	return OnSysTell();
	306	}
	307
	308	virtual off_t OnSysTell() const{
	309	bool doSave = wxPyRestoreThread();
	310	PyObject* arglist = Py_BuildValue("()");
	311	PyObject* result = PyEval_CallObject(tell, arglist);
	312	Py_DECREF(arglist);
	313	off_t o = 0;
	314	if (result != NULL) {
	315	o = PyInt_AsLong(result);
	316	Py_DECREF(result);
	317	};
	318	wxPySaveThread(doSave);
	319	return o;
	320	}
	321
	322	wxPyCBInputStream(PyObject p, PyObject r, PyObject s, PyObject t)
	323	: py(p), read(r), seek(s), tell(t)
	324	{}
	325
	326	public:
	327	~wxPyCBInputStream() {
	328	bool doSave = wxPyRestoreThread();
	329	Py_XDECREF(py);
	330	Py_XDECREF(read);
	331	Py_XDECREF(seek);
	332	Py_XDECREF(tell);
	333	wxPySaveThread(doSave);
	334	}
	335
	336	virtual size_t GetSize() {
	337	if (seek && tell) {
	338	off_t temp = OnSysTell();
	339	off_t ret = OnSysSeek(0, wxFromEnd);
	340	OnSysSeek(temp, wxFromStart);
	341	return ret;
	342	}
	343	else
	344	return 0;
	345	}
	346
	347	static wxPyCBInputStream* create(PyObject *py) {
	348	PyObject* read;
	349	PyObject* seek;
	350	PyObject* tell;
	351
	352	if (!PyInstance_Check(py) && !PyFile_Check(py)) {
	353	PyErr_SetString(PyExc_TypeError, "Not a file-like object");
	354	Py_XDECREF(py);
	355	return NULL;
	356	}
	357	read = getMethod(py, "read");
	358	seek = getMethod(py, "seek");
	359	tell = getMethod(py, "tell");
	360
	361	if (!read) {
	362	PyErr_SetString(PyExc_TypeError, "Not a file-like object");
	363	Py_XDECREF(py);
	364	Py_XDECREF(read);
	365	Py_XDECREF(seek);
	366	Py_XDECREF(tell);
	367	return NULL;
	368	}
	369	return new wxPyCBInputStream(py, read, seek, tell);
	370	}
	371
	372	static PyObject* getMethod(PyObject* py, char* name) {
	373	if (!PyObject_HasAttrString(py, name))
	374	return NULL;
	375	PyObject* o = PyObject_GetAttrString(py, name);
	376	if (!PyMethod_Check(o) && !PyCFunction_Check(o)) {
	377	Py_DECREF(o);
	378	return NULL;
	379	}
	380	return o;
	381	}
	382
	383	protected:
	384
	385	};
	386
	387	%} // End of the C++
	388	//----------------------------------------------------------------------
	389
	390
	391	// block threads for wxPyInputStream **** WHY?
	392	%except(python) {
	393	$function
	394	}
	395
	396
	397	// wxStringPtrList* to python list of strings typemap
	398	%typemap(python, out) wxStringPtrList* {
	399	if ($source) {
	400	$target = PyList_New($source->GetCount());
	401	wxStringPtrList::Node *node = $source->GetFirst();
	402	for (int i=0; node; i++) {
	403	wxString *s = node->GetData();
	404	PyList_SetItem($target, i, PyString_FromStringAndSize(s->c_str(), s->Len()));
	405	node = node->GetNext();
	406	delete s;
	407	}
	408	delete $source;
	409	}
	410	else
	411	$target=0;
	412	}
	413
	414
	415	// transport exceptions via %target=0
	416	%typemap(python, out) wxPyInputStream* {
	417	char _ptemp[128];
	418	if ($source) {
	419	SWIG_MakePtr(_ptemp, (char *) $source,"_wxPyInputStream_p");
	420	$target = Py_BuildValue("s",_ptemp);
	421	}
	422	else
	423	$target=0;
	424	}
	425
	426
	427	// transport exceptions via %target=0
	428	%typemap(python, out) wxString* {
	429	if ($source) {
	430	$target = PyString_FromStringAndSize($source->c_str(), $source->Len());
	431	delete $source;
	432	}
	433	else
	434	$target=0;
	435	}
	436
	437
	438
	439	%name(wxInputStream) class wxPyInputStream {
	440	public:
	441	%addmethods {
	442	wxPyInputStream(PyObject* p) {
	443	wxInputStream* wxi = wxPyCBInputStream::create(p);
	444	if (wxi)
	445	return new wxPyInputStream(wxi);
	446	else
	447	return NULL;
	448	}
	449	}
	450	void close();
	451	void flush();
	452	bool eof();
	453	wxString* read(int size=-1);
	454	wxString* readline(int size=-1);
	455	wxStringPtrList* readlines(int sizehint=-1);
	456	void seek(int offset, int whence=0);
	457	int tell();
	458	/*
	459	bool isatty();
	460	int fileno();
	461	void truncate(int size=-1);
	462	void write(wxString data);
	463	void writelines(wxStringPtrList);
	464	*/
	465	}
	466
	467
	468
	469	// TODO: make a more fully implemented file interface...
	470	class wxOutputStream {
	471	public:
	472	/*
	473	void close();
	474	void flush();
	475	wxString* read(int size=-1);
	476	wxString* readline(int size=-1);
	477	wxStringPtrList* readlines(int sizehint=-1);
	478	void seek(int offset, int whence=0);
	479	int tell();
	480	bool isatty();
	481	int fileno();
	482	void truncate(int size=-1);
	483	void write(wxString data);
	484	void writelines(wxStringPtrList);
	485	*/
	486
	487	%addmethods {
	488	void write(const wxString& str) {
	489	self->Write(str.c_str(), str.Length());
	490	}
	491	}
	492	};
	493
	494
	495	// restore except and typemaps
	496	%typemap(python,out) wxStringPtrList*;
	497	%typemap(python,out) wxPyInputStream*;
	498	%typemap(python, out) wxString* {
	499	$target = PyString_FromStringAndSize($source->c_str(), $source->Len());
	500	}
	501	%except(python) {
	502	wxPy_BEGIN_ALLOW_THREADS;
	503	$function
	504	wxPy_END_ALLOW_THREADS;
	505	}
	506
	507