+ wxPyTMutex->Unlock();
+ wxASSERT_MSG(tstate, wxT("PyThreadState should not be NULL!"));
+ return tstate;
+}
+
+static
+void wxPySaveThreadState(PyThreadState* tstate) {
+ if (wxPyTMutex == NULL) { // Python is shutting down, assume a single thread...
+ gs_shutdownTState = tstate;
+ return;
+ }
+ unsigned long ctid = wxPyGetCurrentThreadId();
+ wxPyTMutex->Lock();
+ for(size_t i=0; i < wxPyTStates->GetCount(); i++) {
+ wxPyThreadState& info = wxPyTStates->Item(i);
+ if (info.tid == ctid) {
+#if 0
+ if (info.tstate != tstate)
+ wxLogMessage("*** tstate mismatch!???");
+#endif
+ // info.tstate = tstate; *** DO NOT update existing ones???
+ // Normally it will never change, but apparently COM callbacks
+ // (i.e. ActiveX controls) will (incorrectly IMHO) use a transient
+ // tstate which will then be garbage the next time we try to use
+ // it...
+ wxPyTMutex->Unlock();
+ return;
+ }
+ }
+ // not found, so add it...
+ wxPyTStates->Add(new wxPyThreadState(ctid, tstate));
+ wxPyTMutex->Unlock();
+}
+
+#endif
+
+
+// Calls from Python to wxWindows code are wrapped in calls to these
+// functions:
+
+PyThreadState* wxPyBeginAllowThreads() {
+#ifdef WXP_WITH_THREAD
+ PyThreadState* saved = PyEval_SaveThread(); // Py_BEGIN_ALLOW_THREADS;
+ wxPySaveThreadState(saved);
+ return saved;
+#else
+ return NULL;
+#endif
+}
+
+void wxPyEndAllowThreads(PyThreadState* saved) {
+#ifdef WXP_WITH_THREAD
+ PyEval_RestoreThread(saved); // Py_END_ALLOW_THREADS;
+#endif
+}
+
+
+
+// Calls from wxWindows back to Python code, or even any PyObject
+// manipulations, PyDECREF's and etc. are wrapped in calls to these functions:
+
+void wxPyBeginBlockThreads() {
+#ifdef WXP_WITH_THREAD
+ PyThreadState* tstate = wxPyGetThreadState();
+ PyEval_RestoreThread(tstate);
+#endif
+}
+
+
+void wxPyEndBlockThreads() {
+#ifdef WXP_WITH_THREAD
+ // Is there any need to save it again?
+ // PyThreadState* tstate =
+ PyEval_SaveThread();
+#endif
+}
+
+
+//---------------------------------------------------------------------------
+// wxPyInputStream and wxPyCBInputStream methods
+
+
+void wxPyInputStream::close() {
+ /* do nothing for now */
+}
+
+void wxPyInputStream::flush() {
+ /* do nothing for now */
+}
+
+bool wxPyInputStream::eof() {
+ if (m_wxis)
+ return m_wxis->Eof();
+ else
+ return TRUE;
+}
+
+wxPyInputStream::~wxPyInputStream() {
+ /* do nothing */
+}
+
+
+
+
+PyObject* wxPyInputStream::read(int size) {
+ PyObject* obj = NULL;
+ wxMemoryBuffer buf;
+ const int BUFSIZE = 1024;
+
+ // check if we have a real wxInputStream to work with
+ if (!m_wxis) {
+ wxPyBeginBlockThreads();
+ PyErr_SetString(PyExc_IOError, "no valid C-wxInputStream");
+ wxPyEndBlockThreads();
+ return NULL;
+ }
+
+ if (size < 0) {
+ // read while bytes are available on the stream
+ while ( m_wxis->CanRead() ) {
+ m_wxis->Read(buf.GetAppendBuf(BUFSIZE), BUFSIZE);
+ buf.UngetAppendBuf(m_wxis->LastRead());
+ }
+
+ } else { // Read only size number of characters
+ m_wxis->Read(buf.GetWriteBuf(size), size);
+ buf.UngetWriteBuf(m_wxis->LastRead());
+ }
+
+ // error check
+ wxPyBeginBlockThreads();
+ wxStreamError err = m_wxis->GetLastError();
+ if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
+ PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
+ }
+ else {
+ // We use only strings for the streams, not unicode
+ obj = PyString_FromStringAndSize(buf, buf.GetDataLen());
+ }
+ wxPyEndBlockThreads();
+ return obj;
+}
+
+
+PyObject* wxPyInputStream::readline(int size) {
+ PyObject* obj = NULL;
+ wxMemoryBuffer buf;
+ int i;
+ char ch;
+
+ // check if we have a real wxInputStream to work with
+ if (!m_wxis) {
+ wxPyBeginBlockThreads();
+ PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
+ wxPyEndBlockThreads();
+ return NULL;
+ }
+
+ // read until \n or byte limit reached
+ for (i=ch=0; (ch != '\n') && (m_wxis->CanRead()) && ((size < 0) || (i < size)); i++) {
+ ch = m_wxis->GetC();
+ buf.AppendByte(ch);
+ }
+
+ // errorcheck
+ wxPyBeginBlockThreads();
+ wxStreamError err = m_wxis->GetLastError();
+ if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
+ PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
+ }
+ else {
+ // We use only strings for the streams, not unicode
+ obj = PyString_FromStringAndSize((char*)buf.GetData(), buf.GetDataLen());
+ }
+ wxPyEndBlockThreads();
+ return obj;
+}
+
+
+PyObject* wxPyInputStream::readlines(int sizehint) {
+ PyObject* pylist;
+
+ // check if we have a real wxInputStream to work with
+ if (!m_wxis) {
+ wxPyBeginBlockThreads();
+ PyErr_SetString(PyExc_IOError,"no valid C-wxInputStream");
+ wxPyEndBlockThreads();
+ return NULL;
+ }
+
+ // init list
+ wxPyBeginBlockThreads();
+ pylist = PyList_New(0);
+ if (!pylist) {
+ wxPyBeginBlockThreads();
+ PyErr_NoMemory();
+ wxPyEndBlockThreads();
+ return NULL;
+ }
+
+ // read sizehint bytes or until EOF
+ int i;
+ for (i=0; (m_wxis->CanRead()) && ((sizehint < 0) || (i < sizehint));) {
+ PyObject* s = this->readline();
+ if (s == NULL) {
+ wxPyBeginBlockThreads();
+ Py_DECREF(pylist);
+ wxPyEndBlockThreads();
+ return NULL;
+ }
+ wxPyBeginBlockThreads();
+ PyList_Append(pylist, s);
+ i += PyString_Size(s);
+ wxPyEndBlockThreads();
+ }
+
+ // error check
+ wxStreamError err = m_wxis->GetLastError();
+ if (err != wxSTREAM_NO_ERROR && err != wxSTREAM_EOF) {
+ wxPyBeginBlockThreads();
+ Py_DECREF(pylist);
+ PyErr_SetString(PyExc_IOError,"IOError in wxInputStream");
+ wxPyEndBlockThreads();
+ return NULL;
+ }
+
+ return pylist;
+}
+
+
+void wxPyInputStream::seek(int offset, int whence) {
+ if (m_wxis)
+ m_wxis->SeekI(offset, wxSeekMode(whence));
+}
+
+int wxPyInputStream::tell(){
+ if (m_wxis)
+ return m_wxis->TellI();
+ else return 0;
+}
+
+
+
+
+wxPyCBInputStream::wxPyCBInputStream(PyObject *r, PyObject *s, PyObject *t, bool block)
+ : wxInputStream(), m_read(r), m_seek(s), m_tell(t), m_block(block)
+{}
+
+
+wxPyCBInputStream::~wxPyCBInputStream() {
+ if (m_block) wxPyBeginBlockThreads();
+ Py_XDECREF(m_read);
+ Py_XDECREF(m_seek);
+ Py_XDECREF(m_tell);
+ if (m_block) wxPyEndBlockThreads();
+}
+
+
+wxPyCBInputStream* wxPyCBInputStream::create(PyObject *py, bool block) {
+ if (block) wxPyBeginBlockThreads();
+
+ PyObject* read = getMethod(py, "read");
+ PyObject* seek = getMethod(py, "seek");
+ PyObject* tell = getMethod(py, "tell");
+
+ if (!read) {
+ PyErr_SetString(PyExc_TypeError, "Not a file-like object");
+ Py_XDECREF(read);
+ Py_XDECREF(seek);
+ Py_XDECREF(tell);
+ if (block) wxPyEndBlockThreads();
+ return NULL;
+ }
+
+ if (block) wxPyEndBlockThreads();
+ return new wxPyCBInputStream(read, seek, tell, block);
+}
+
+
+wxPyCBInputStream* wxPyCBInputStream_create(PyObject *py, bool block) {
+ return wxPyCBInputStream::create(py, block);
+}
+
+PyObject* wxPyCBInputStream::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;
+}
+
projects / wxWidgets.git / blobdiff