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swig/Lib/python/pystrings.swg

+/* ------------------------------------------------------------
+ *  utility methods for char strings 
+ * ------------------------------------------------------------ */
+%fragment("SWIG_AsCharPtrAndSize","header",fragment="SWIG_pchar_descriptor") {
+SWIGINTERN int
+SWIG_AsCharPtrAndSize(PyObject *obj, char** cptr, size_t* psize, int *alloc)
+{
+%#if PY_VERSION_HEX>=0x03000000
+  if (PyUnicode_Check(obj))
+%#else  
+  if (PyString_Check(obj))
+%#endif
+  {
+    char *cstr; Py_ssize_t len;
+%#if PY_VERSION_HEX>=0x03000000
+    if (!alloc && cptr) {
+        /* We can't allow converting without allocation, since the internal
+           representation of string in Python 3 is UCS-2/UCS-4 but we require
+           a UTF-8 representation.
+           TODO(bhy) More detailed explanation */
+        return SWIG_RuntimeError;
+    }
+    obj = PyUnicode_AsUTF8String(obj);
+    PyBytes_AsStringAndSize(obj, &cstr, &len);
+    if(alloc) *alloc = SWIG_NEWOBJ;
+%#else
+    PyString_AsStringAndSize(obj, &cstr, &len);
+%#endif
+    if (cptr) {
+      if (alloc) {
+        /* 
+           In python the user should not be able to modify the inner
+           string representation. To warranty that, if you define
+           SWIG_PYTHON_SAFE_CSTRINGS, a new/copy of the python string
+           buffer is always returned.
+
+           The default behavior is just to return the pointer value,
+           so, be careful.
+        */ 
+%#if defined(SWIG_PYTHON_SAFE_CSTRINGS)
+        if (*alloc != SWIG_OLDOBJ) 
+%#else
+        if (*alloc == SWIG_NEWOBJ) 
+%#endif
+          {
+            *cptr = %new_copy_array(cstr, len + 1, char);
+            *alloc = SWIG_NEWOBJ;
+          }
+        else {
+          *cptr = cstr;
+          *alloc = SWIG_OLDOBJ;
+        }
+      } else {
+        %#if PY_VERSION_HEX>=0x03000000
+        assert(0); /* Should never reach here in Python 3 */
+        %#endif
+        *cptr = SWIG_Python_str_AsChar(obj);
+      }
+    }
+    if (psize) *psize = len + 1;
+%#if PY_VERSION_HEX>=0x03000000
+    Py_XDECREF(obj);
+%#endif
+    return SWIG_OK;
+  } else {
+    swig_type_info* pchar_descriptor = SWIG_pchar_descriptor();
+    if (pchar_descriptor) {
+      void* vptr = 0;
+      if (SWIG_ConvertPtr(obj, &vptr, pchar_descriptor, 0) == SWIG_OK) {
+        if (cptr) *cptr = (char *) vptr;
+        if (psize) *psize = vptr ? (strlen((char *)vptr) + 1) : 0;
+        if (alloc) *alloc = SWIG_OLDOBJ;
+        return SWIG_OK;
+      }
+    }
+  }
+  return SWIG_TypeError;
+}
+}
+
+%fragment("SWIG_FromCharPtrAndSize","header",fragment="SWIG_pchar_descriptor") {
+SWIGINTERNINLINE PyObject *
+SWIG_FromCharPtrAndSize(const char* carray, size_t size)
+{
+  if (carray) {
+    if (size > INT_MAX) {
+      swig_type_info* pchar_descriptor = SWIG_pchar_descriptor();
+      return pchar_descriptor ? 
+        SWIG_NewPointerObj(%const_cast(carray,char *), pchar_descriptor, 0) : SWIG_Py_Void();
+    } else {
+%#if PY_VERSION_HEX >= 0x03000000
+      return PyUnicode_FromStringAndSize(carray, %numeric_cast(size,int));
+%#else
+      return PyString_FromStringAndSize(carray, %numeric_cast(size,int));
+%#endif
+    }
+  } else {
+    return SWIG_Py_Void();
+  }
+}
+}
+
+