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/******************************************************************************
* $Id: pymodule.i 9497 2009-10-20 03:27:18Z warmerdam $
*
* Project: MapServer
* Purpose: Python-specific enhancements to MapScript
* Author: Sean Gillies, sgillies@frii.com
*
******************************************************************************
*
* Python-specific mapscript code has been moved into this
* SWIG interface file to improve the readibility of the main
* interface file. The main mapscript.i file includes this
* file when SWIGPYTHON is defined (via 'swig -python ...').
*
*****************************************************************************/
/******************************************************************************
* Simple Typemaps
*****************************************************************************/
/* Translates Python None to C NULL for strings */
%typemap(in,parse="z") char * "";
/* Translate Python's built-in file object to FILE * */
%typemap(in) FILE * {
if (!PyFile_Check($input)) {
PyErr_SetString(PyExc_TypeError, "Input is not file");
return NULL;
}
$1 = PyFile_AsFile($input);
}
/* To support imageObj::getBytes */
%typemap(out) gdBuffer {
$result = PyString_FromStringAndSize((const char*)$1.data, $1.size);
if( $1.owns_data )
gdFree($1.data);
}
/**************************************************************************
* MapServer Errors and Python Exceptions
**************************************************************************
*
* Translation of errors reported via the ms_error structure into
* Python exceptions. Original code by Chris Chamberlin <cdc@aracnet.com>
* has been updated by Sean Gillies <sgillies@frii.com> to use
* PyErr_SetString, %exception and $action for SWIG 1.3, do the most
* obvious mapping of MapServer errors to Python exceptions and map all
* others to a new 'MapServerError' exception which can be caught like this:
*
* from mapscript import *
* empty_map = mapObj('')
* try:
* img = empty_map.draw()
* except MapServerError, msg:
* print "Caught MapServerError:", msg
*
*************************************************************************/
%{
PyObject *MSExc_MapServerError;
PyObject *MSExc_MapServerChildError;
%}
/* Module initialization: call msSetup() and register msCleanup() */
%init %{
/* See bug 1203 for discussion of race condition with GD font cache */
if (msSetup() != MS_SUCCESS)
{
msSetError(MS_MISCERR, "Failed to set up threads and font cache",
"msSetup()");
}
Py_AtExit(msCleanup);
/* Define Generic MapServer error */
MSExc_MapServerError=PyErr_NewException("_mapscript.MapServerError",NULL,NULL);
if (MSExc_MapServerError != NULL)
PyDict_SetItemString(d, "MapServerError", MSExc_MapServerError);
/* Define MapServer MS_CHILD error */
MSExc_MapServerChildError = PyErr_NewException("_mapscript.MapServerChildError", NULL, NULL);
if (MSExc_MapServerChildError != NULL)
PyDict_SetItemString(d, "MapServerChildError", MSExc_MapServerChildError);
%}
%{
static void _raise_ms_exception( void );
static void _raise_ms_exception() {
int errcode;
errorObj *ms_error;
char *errmsg;
ms_error = msGetErrorObj();
errcode = ms_error->code;
errmsg = msGetErrorString("\n");
switch (errcode) {
case MS_IOERR:
PyErr_SetString(PyExc_IOError, errmsg);
break;
case MS_MEMERR:
PyErr_SetString(PyExc_MemoryError, errmsg);
break;
case MS_TYPEERR:
PyErr_SetString(PyExc_TypeError, errmsg);
break;
case MS_EOFERR:
PyErr_SetString(PyExc_EOFError, errmsg);
break;
case MS_CHILDERR:
PyErr_SetString(MSExc_MapServerChildError, errmsg);
break;
default:
PyErr_SetString(MSExc_MapServerError, errmsg);
break;
}
free(errmsg);
}
%}
%exception {
$action {
errorObj *ms_error = msGetErrorObj();
switch(ms_error->code) {
case MS_NOERR:
break;
case MS_NOTFOUND:
msResetErrorList();
break;
case -1:
break;
case MS_IOERR:
if (strcmp(ms_error->routine, "msSearchDiskTree()") != 0) {
_raise_ms_exception();
msResetErrorList();
return NULL;
}
default:
_raise_ms_exception();
msResetErrorList();
return NULL;
}
}
}
%pythoncode %{
MapServerError = _mapscript.MapServerError
MapServerChildError = _mapscript.MapServerChildError
%}
/* The bogus "if 1:" is to introduce a new scope to work around indentation
handling with pythonappend in different versions. (#3180) */
%feature("pythonappend") layerObj %{if 1:
if args and len(args)!=0:
self.p_map=args[0]
else:
self.p_map=None%}
/* The bogus "if 1:" is to introduce a new scope to work around indentation
handling with pythonappend in different versions. (#3180) */
%feature("pythonappend") classObj %{if 1:
if args and len(args)!=0:
self.p_layer=args[0]
else:
self.p_layer=None%}
%feature("shadow") insertClass %{
def insertClass(*args):
actualIndex=$action(*args)
args[1].p_layer=args[0]
return actualIndex%}
%feature("shadow") getClass %{
def getClass(*args):
clazz = $action(*args)
if clazz:
if args and len(args)!=0:
clazz.p_layer=args[0]
else:
clazz.p_layer=None
return clazz%}
%feature("shadow") insertLayer %{
def insertLayer(*args):
actualIndex=$action(*args)
args[1].p_map=args[0]
return actualIndex%}
%feature("shadow") getLayer %{
def getLayer(*args):
layer = $action(*args)
if layer:
if args and len(args)!=0:
layer.p_map=args[0]
else:
layer.p_map=None
return layer%}
%feature("shadow") getLayerByName %{
def getLayerByName(*args):
layer = $action(*args)
if layer:
if args and len(args)!=0:
layer.p_map=args[0]
else:
layer.p_map=None
return layer%}
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