libraries/pyshapelib/pyshapelib_api.h

/* Header file for the PyShapelib API for other Python modules */
/* $Revision$ */

#ifndef PYSHAPELIB_API_H
#define PYSHAPELIB_API_H

typedef struct {
    /* Shapefile functions */
    SHPObject * (*SHPReadObject)(SHPHandle hSHP, int iShape);
    void (*SHPDestroyObject)(SHPObject * psObject);

    /* SHPTree functions */
    SHPTree * (*SHPCreateTree)(SHPHandle hSHP, int nDimension, int nMaxDepth,
                               double *padfBoundsMin, double *padfBoundsMax);
    void (*SHPDestroyTree)(SHPTree * hTree);
    int * (*SHPTreeFindLikelyShapes)(SHPTree * hTree, double * padfBoundsMin,
                                     double * padfBoundsMax, int *);
} PyShapeLibAPI;


/* Macro to import the shapelib module, extract the API pointer and
 * assign it to the variable given as argument */
#define PYSHAPELIB_IMPORT_API(apivariable)                                 \
{                                                                          \
    PyObject * shapelib = PyImport_ImportModule("shapelib");               \
    if (shapelib)                                                          \
    {                                                                      \
        PyObject * c_api_func = PyObject_GetAttrString(shapelib, "c_api"); \
        if (c_api_func)                                                    \
        {                                                                  \
            PyObject * cobj = PyObject_CallObject(c_api_func, NULL);       \
            if (cobj)                                                      \
            {                                                              \
                (apivariable) = (PyShapeLibAPI*)PyCObject_AsVoidPtr(cobj); \
            }                                                              \
        }                                                                  \
    }                                                                      \
}


#endif /* PYSHAPELIB_API_H */
1	/* Header file for the PyShapelib API for other Python modules */
2	/* $Revision$ */
3
4	#ifndef PYSHAPELIB_API_H
5	#define PYSHAPELIB_API_H
6
7	typedef struct {
8	/* Shapefile functions */
9	SHPObject * (*SHPReadObject)(SHPHandle hSHP, int iShape);
10	void (SHPDestroyObject)(SHPObject psObject);
11
12	/* SHPTree functions */
13	SHPTree * (*SHPCreateTree)(SHPHandle hSHP, int nDimension, int nMaxDepth,
14	double padfBoundsMin, double padfBoundsMax);
15	void (SHPDestroyTree)(SHPTree hTree);
16	int * (SHPTreeFindLikelyShapes)(SHPTree hTree, double * padfBoundsMin,
17	double * padfBoundsMax, int *);
18	} PyShapeLibAPI;
19
20
21	/* Macro to import the shapelib module, extract the API pointer and
22	* assign it to the variable given as argument */
23	#define PYSHAPELIB_IMPORT_API(apivariable) \
24	{ \
25	PyObject * shapelib = PyImport_ImportModule("shapelib"); \
26	if (shapelib) \
27	{ \
28	PyObject * c_api_func = PyObject_GetAttrString(shapelib, "c_api"); \
29	if (c_api_func) \
30	{ \
31	PyObject * cobj = PyObject_CallObject(c_api_func, NULL); \
32	if (cobj) \
33	{ \
34	(apivariable) = (PyShapeLibAPI*)PyCObject_AsVoidPtr(cobj); \
35	} \
36	} \
37	} \
38	}
39
40
41	#endif /* PYSHAPELIB_API_H */
Name	Value
svn:eol-style	native
svn:keywords	Author Date Id Revision