9 |
} |
} |
10 |
SHPObjectObject; |
SHPObjectObject; |
11 |
|
|
12 |
|
enum { |
13 |
|
vtXY, |
14 |
|
vtXYM, |
15 |
|
vtXYZM, |
16 |
|
vtInvalid |
17 |
|
} VertexType; |
18 |
|
|
19 |
|
int determine_vertex_type(int shape_type, int* has_z, int* has_m) |
20 |
|
{ |
21 |
|
switch (shape_type) |
22 |
|
{ |
23 |
|
case SHPT_POINT: |
24 |
|
case SHPT_ARC: |
25 |
|
case SHPT_POLYGON: |
26 |
|
case SHPT_MULTIPOINT: |
27 |
|
if (has_z) *has_z = 0; |
28 |
|
if (has_m) *has_m = 0; |
29 |
|
return vtXY; |
30 |
|
case SHPT_POINTM: |
31 |
|
case SHPT_ARCM: |
32 |
|
case SHPT_POLYGONM: |
33 |
|
case SHPT_MULTIPOINTM: |
34 |
|
if (has_z) *has_z = 0; |
35 |
|
if (has_m) *has_m = 1; |
36 |
|
case SHPT_POINTZ: |
37 |
|
case SHPT_ARCZ: |
38 |
|
case SHPT_POLYGONZ: |
39 |
|
case SHPT_MULTIPOINTZ: |
40 |
|
case SHPT_MULTIPATCH: |
41 |
|
if (has_z) *has_z = 1; |
42 |
|
if (has_m) *has_m = 1; |
43 |
|
return vtXYZM; |
44 |
|
default: |
45 |
|
if (has_z) *has_z = 0; |
46 |
|
if (has_m) *has_m = 0; |
47 |
|
return vtInvalid; |
48 |
|
} |
49 |
|
} |
50 |
|
|
51 |
/* allocator |
/* allocator |
52 |
*/ |
*/ |
53 |
static PyObject* shpobject_new(PyTypeObject* type, PyObject* args, PyObject* kwds) |
static PyObject* shpobject_new(PyTypeObject* type, PyObject* args, PyObject* kwds) |
67 |
self->ob_type->tp_free((PyObject*)self); |
self->ob_type->tp_free((PyObject*)self); |
68 |
} |
} |
69 |
|
|
70 |
|
static int unpack_vertex(PyObject* vertex, int vertex_type, |
71 |
|
double* xs, double* ys, double* zs, double* ms, int offset); |
72 |
|
|
73 |
/* The constructor of SHPObject. parts is a list of lists of tuples |
/* The constructor of SHPObject. parts is a list of lists of tuples |
74 |
* describing the parts and their vertices just likethe output of the |
* describing the parts and their vertices just likethe output of the |
75 |
* vertices() method. part_type_list is the list of part-types and may |
* vertices() method. part_type_list is the list of part-types and may |
89 |
|
|
90 |
double* xs = NULL; |
double* xs = NULL; |
91 |
double* ys = NULL; |
double* ys = NULL; |
92 |
|
double* zs = NULL; |
93 |
|
double* ms = NULL; |
94 |
int* part_starts = NULL; |
int* part_starts = NULL; |
95 |
int* part_types = NULL; |
int* part_types = NULL; |
96 |
|
|
97 |
|
PyObject* part; |
98 |
|
int vertex_type; |
99 |
|
int has_z; |
100 |
|
int has_m; |
101 |
|
|
102 |
int i; |
int i; |
103 |
int return_code = -1; |
int return_code = -1; |
104 |
|
|
108 |
PyErr_Format(PyExc_TypeError, "shapelib.SHPObject.__init__ takes no keyword arguments"); |
PyErr_Format(PyExc_TypeError, "shapelib.SHPObject.__init__ takes no keyword arguments"); |
109 |
return -1; |
return -1; |
110 |
} |
} |
111 |
if (!PyArg_ParseTuple(args, "iiO|O", &type, &id, &parts, &part_type_list)) return -1; |
if (!PyArg_ParseTuple(args, "iiO|O:__init__", &type, &id, &parts, &part_type_list)) return -1; |
112 |
|
|
113 |
|
/* check parts */ |
114 |
if (!PySequence_Check(parts)) |
if (!PySequence_Check(parts)) |
115 |
{ |
{ |
116 |
PyErr_SetString(PyExc_TypeError, "parts is not a sequence"); |
PyErr_SetString(PyExc_TypeError, "parts is not a sequence"); |
157 |
num_vertices += PySequence_Length(part); |
num_vertices += PySequence_Length(part); |
158 |
Py_DECREF(part); |
Py_DECREF(part); |
159 |
} |
} |
160 |
|
|
161 |
|
|
162 |
|
vertex_type = determine_vertex_type(type, &has_z, &has_m); |
163 |
|
|
164 |
/* allocate the memory for the various arrays and check for memory errors */ |
/* allocate the memory for the various arrays and check for memory errors */ |
165 |
xs = malloc(num_vertices * sizeof(double)); |
xs = malloc(num_vertices * sizeof(double)); |
166 |
ys = malloc(num_vertices * sizeof(double)); |
ys = malloc(num_vertices * sizeof(double)); |
167 |
|
zs = has_z ? malloc(num_vertices * sizeof(double)) : NULL; |
168 |
|
ms = has_m ? malloc(num_vertices * sizeof(double)) : NULL; |
169 |
part_starts = malloc(num_parts * sizeof(int)); |
part_starts = malloc(num_parts * sizeof(int)); |
170 |
part_types = part_type_list ? malloc(num_parts * sizeof(int)) : 0; |
part_types = part_type_list ? malloc(num_parts * sizeof(int)) : 0; |
171 |
|
|
172 |
if (!xs || !ys || !part_starts || (part_type_list && !part_types)) |
if (!xs || !ys || (has_z && !zs) || (has_m && !ms) || !part_starts || (part_type_list && !part_types)) |
173 |
{ |
{ |
174 |
PyErr_NoMemory(); |
PyErr_NoMemory(); |
175 |
goto exit; |
goto exit; |
197 |
{ |
{ |
198 |
int j, length; |
int j, length; |
199 |
|
|
200 |
PyObject* part = PySequence_ITEM(parts, i); |
part = PySequence_ITEM(parts, i); |
201 |
length = PySequence_Length(part); |
length = PySequence_Length(part); |
202 |
|
if (length < 0) goto exit; |
203 |
part_starts[i] = part_start; |
part_starts[i] = part_start; |
204 |
|
|
205 |
for (j = 0; j < length; ++j) |
for (j = 0; j < length; ++j) |
206 |
{ |
{ |
207 |
PyObject* vertex = PySequence_ITEM(part, j); |
PyObject* vertex = PySequence_ITEM(part, j); |
208 |
if (!PyArg_ParseTuple(vertex, "dd", xs + part_start + j, ys + part_start + j)) |
if (!unpack_vertex(vertex, vertex_type, xs, ys, zs, ms, part_start + j)) |
209 |
{ |
{ |
|
PyErr_SetString(PyExc_TypeError, "at least one part contains an vertex that's not a tuple of two doubles"); |
|
210 |
Py_DECREF(vertex); |
Py_DECREF(vertex); |
211 |
Py_DECREF(part); |
PyErr_SetString(PyExc_TypeError, "at least one vertex is of the wrong format"); |
212 |
goto exit; |
goto exit; |
213 |
} |
} |
214 |
Py_DECREF(vertex); |
Py_DECREF(vertex); |
215 |
} |
} |
216 |
Py_DECREF(part); |
Py_DECREF(part); |
217 |
|
part = NULL; |
218 |
part_start += length; |
part_start += length; |
219 |
} |
} |
220 |
|
|
221 |
self->shpObject = SHPCreateObject(type, id, num_parts, part_starts, part_types, num_vertices, xs, ys, NULL, NULL); |
self->shpObject = SHPCreateObject(type, id, num_parts, part_starts, part_types, num_vertices, xs, ys, zs, ms); |
222 |
return_code = 0; |
return_code = 0; |
223 |
|
|
224 |
exit: |
exit: |
225 |
|
Py_XDECREF(part); |
226 |
free(xs); |
free(xs); |
227 |
free(ys); |
free(ys); |
228 |
|
free(zs); |
229 |
|
free(ms); |
230 |
free(part_starts); |
free(part_starts); |
231 |
free(part_types); |
free(part_types); |
232 |
return return_code; |
return return_code; |
233 |
} |
} |
234 |
|
|
235 |
|
/* helper for shpobject_init. Unpacks vertices |
236 |
|
*/ |
237 |
|
static int unpack_vertex(PyObject* vertex, int vertex_type, |
238 |
|
double* xs, double* ys, double* zs, double* ms, int offset) |
239 |
|
{ |
240 |
|
int ok; |
241 |
|
PyObject* m_object; |
242 |
|
PyObject *err_type, *err_value, *err_traceback; |
243 |
|
|
244 |
|
switch (vertex_type) |
245 |
|
{ |
246 |
|
case vtXY: |
247 |
|
return PyArg_ParseTuple(vertex, "dd:__init__", xs + offset, ys + offset); |
248 |
|
|
249 |
|
case vtXYM: |
250 |
|
ms[offset] = PYSHAPELIB_NO_DATA; |
251 |
|
ok = PyArg_ParseTuple(vertex, "dd|d:__init__", xs + offset, ys + offset, ms + offset); |
252 |
|
if (!ok) |
253 |
|
{ |
254 |
|
/* maybe they specified None as M value */ |
255 |
|
PyErr_Fetch(&err_type, &err_value, &err_traceback); |
256 |
|
ok = PyArg_ParseTuple(vertex, "ddO:__init__", xs + offset, ys + offset, &m_object); |
257 |
|
if (ok && m_object == Py_None) |
258 |
|
{ |
259 |
|
Py_XDECREF(err_type); |
260 |
|
Py_XDECREF(err_value); |
261 |
|
Py_XDECREF(err_traceback); |
262 |
|
} |
263 |
|
else |
264 |
|
{ |
265 |
|
PyErr_Restore(err_type, err_value, err_traceback); |
266 |
|
} |
267 |
|
} |
268 |
|
return ok; |
269 |
|
|
270 |
|
case vtXYZM: |
271 |
|
zs[offset] = 0.; |
272 |
|
ms[offset] = PYSHAPELIB_NO_DATA; |
273 |
|
ok = PyArg_ParseTuple(vertex, "dd|dd:__init__", xs + offset, ys + offset, |
274 |
|
zs + offset, ms + offset); |
275 |
|
if (!ok) |
276 |
|
{ |
277 |
|
/* maybe they specified None as M value */ |
278 |
|
PyErr_Fetch(&err_type, &err_value, &err_traceback); |
279 |
|
ok = PyArg_ParseTuple(vertex, "dddO:__init__", xs + offset, ys + offset, |
280 |
|
zs + offset, &m_object); |
281 |
|
if (ok && m_object == Py_None) |
282 |
|
{ |
283 |
|
Py_XDECREF(err_type); |
284 |
|
Py_XDECREF(err_value); |
285 |
|
Py_XDECREF(err_traceback); |
286 |
|
} |
287 |
|
else |
288 |
|
{ |
289 |
|
PyErr_Restore(err_type, err_value, err_traceback); |
290 |
|
} |
291 |
|
} |
292 |
|
return ok; |
293 |
|
|
294 |
|
default: |
295 |
|
PyErr_SetString(PyExc_NotImplementedError, "vertex type not implemented"); |
296 |
|
return 0; |
297 |
|
} |
298 |
|
} |
299 |
|
|
300 |
/* |
/* |
301 |
* The extents() method of SHPObject. |
* The extents() method of SHPObject. |
302 |
* |
* |
319 |
* tuples. |
* tuples. |
320 |
*/ |
*/ |
321 |
|
|
322 |
static PyObject* build_vertex_list(SHPObject *object, int index, int length); |
static PyObject* build_vertex_list(SHPObject *object, int index, int length, int vertex_type); |
323 |
|
|
324 |
static PyObject* shpobject_vertices(SHPObjectObject* self) |
static PyObject* shpobject_vertices(SHPObjectObject* self) |
325 |
{ |
{ |
327 |
PyObject *part = NULL; |
PyObject *part = NULL; |
328 |
int part_idx, vertex_idx; |
int part_idx, vertex_idx; |
329 |
int length = 0; |
int length = 0; |
330 |
|
int vertex_type; |
331 |
|
|
332 |
SHPObject* object = self->shpObject; |
SHPObject* object = self->shpObject; |
333 |
|
vertex_type = determine_vertex_type(object->nSHPType, NULL, NULL); |
334 |
|
|
335 |
if (object->nParts > 0) |
if (object->nParts > 0) |
336 |
{ |
{ |
343 |
for (part_idx = 0, vertex_idx = 0; part_idx < object->nParts; part_idx++) |
for (part_idx = 0, vertex_idx = 0; part_idx < object->nParts; part_idx++) |
344 |
{ |
{ |
345 |
if (part_idx < object->nParts - 1) |
if (part_idx < object->nParts - 1) |
346 |
length = (object->panPartStart[part_idx + 1] |
length = (object->panPartStart[part_idx + 1] |
347 |
- object->panPartStart[part_idx]); |
- object->panPartStart[part_idx]); |
348 |
else |
else |
349 |
length = object->nVertices - object->panPartStart[part_idx]; |
length = object->nVertices - object->panPartStart[part_idx]; |
350 |
|
|
351 |
part = build_vertex_list(object, vertex_idx, length); |
part = build_vertex_list(object, vertex_idx, length, vertex_type); |
352 |
if (!part) |
if (!part) goto fail; |
|
goto fail; |
|
353 |
|
|
354 |
if (PyList_SetItem(result, part_idx, part) < 0) |
if (PyList_SetItem(result, part_idx, part) < 0) goto fail; |
|
goto fail; |
|
355 |
|
|
356 |
vertex_idx += length; |
vertex_idx += length; |
357 |
} |
} |
359 |
else |
else |
360 |
{ |
{ |
361 |
/* only one part. usual for SHPT_POINT */ |
/* only one part. usual for SHPT_POINT */ |
362 |
result = build_vertex_list(object, 0, object->nVertices); |
result = build_vertex_list(object, 0, object->nVertices, vertex_type); |
363 |
} |
} |
364 |
|
|
365 |
return result; |
return result; |
375 |
* index as a Python-list of tuples. Helper function for |
* index as a Python-list of tuples. Helper function for |
376 |
* SHPObject_vertices. |
* SHPObject_vertices. |
377 |
*/ |
*/ |
378 |
static PyObject* build_vertex_list(SHPObject *object, int index, int length) |
static PyObject* build_vertex_list(SHPObject *object, int index, int length, int vertex_type) |
379 |
{ |
{ |
380 |
int i; |
int i; |
381 |
PyObject * list; |
PyObject * list; |
387 |
|
|
388 |
for (i = 0; i < length; i++, index++) |
for (i = 0; i < length; i++, index++) |
389 |
{ |
{ |
390 |
vertex = Py_BuildValue("dd", object->padfX[index], |
switch (vertex_type) |
391 |
object->padfY[index]); |
{ |
392 |
if (!vertex) |
case vtXY: |
393 |
goto fail; |
vertex = Py_BuildValue("dd", object->padfX[index], object->padfY[index]); |
394 |
if (PyList_SetItem(list, i, vertex) < 0) |
break; |
395 |
|
case vtXYM: |
396 |
|
vertex = Py_BuildValue("ddd", object->padfX[index], object->padfY[index], |
397 |
|
object->padfM[index]); |
398 |
|
break; |
399 |
|
case vtXYZM: |
400 |
|
vertex = Py_BuildValue("dddd", object->padfX[index], object->padfY[index], |
401 |
|
object->padfZ[index], object->padfM[index]); |
402 |
|
break; |
403 |
|
default: |
404 |
goto fail; |
goto fail; |
405 |
} |
} |
406 |
|
|
407 |
|
if (!vertex || PyList_SetItem(list, i, vertex) < 0) goto fail; |
408 |
|
} |
409 |
|
|
410 |
return list; |
return list; |
411 |
|
|
412 |
fail: |
fail: |
|
Py_XDECREF(vertex); |
|
413 |
Py_DECREF(list); |
Py_DECREF(list); |
414 |
return NULL; |
return NULL; |
415 |
} |
} |
492 |
|
|
493 |
static struct PyMethodDef shpobject_methods[] = |
static struct PyMethodDef shpobject_methods[] = |
494 |
{ |
{ |
495 |
{"extents", (PyCFunction)shpobject_extents, METH_NOARGS, NULL}, |
{"extents", (PyCFunction)shpobject_extents, METH_NOARGS, |
496 |
{"vertices", (PyCFunction)shpobject_vertices, METH_NOARGS, NULL}, |
"extents() -> ((x_min, y_min, z_min, m_min), (x_max, y_max, z_max, m_max))\n\n" |
497 |
{"part_types", (PyCFunction)shpobject_part_types, METH_NOARGS, NULL}, |
"returns the 4D bounding box of the SHPObject"}, |
498 |
|
{"vertices", (PyCFunction)shpobject_vertices, METH_NOARGS, |
499 |
|
"vertices() -> [[(x, y, ...), ...], ...]\n\n" |
500 |
|
"Returns a list of object parts, where each part is again a list of vertices. " |
501 |
|
"Each vertex is a tuple of two to four doubles, depending on the object type."}, |
502 |
|
{"part_types", (PyCFunction)shpobject_part_types, METH_NOARGS, |
503 |
|
"part_types() -> tuple\n\n" |
504 |
|
"returns a tuple of integers, each integer indicating the type of the " |
505 |
|
"corresponding part in vertices()"}, |
506 |
{NULL} |
{NULL} |
507 |
}; |
}; |
508 |
|
|
509 |
static struct PyGetSetDef shpobject_getsetters[] = |
static struct PyGetSetDef shpobject_getsetters[] = |
510 |
{ |
{ |
511 |
{"type", (getter)shpobject_type, NULL, NULL }, |
{"type", (getter)shpobject_type, NULL, "type of the object (read-only)" }, |
512 |
{"id", (getter)shpobject_id, NULL, NULL }, |
{"id", (getter)shpobject_id, NULL, "id of the object (read-only)" }, |
513 |
{NULL} |
{NULL} |
514 |
}; |
}; |
515 |
|
|
547 |
*/ |
*/ |
548 |
static int shapefile_init(ShapeFileObject* self, PyObject* args, PyObject* kwds) |
static int shapefile_init(ShapeFileObject* self, PyObject* args, PyObject* kwds) |
549 |
{ |
{ |
550 |
char* file; |
char* file = NULL; |
551 |
char* mode = "rb"; |
char* mode = "rb"; |
552 |
if (kwds != NULL && PyDict_Size(kwds) > 0) |
static char *kwlist[] = {"name", "mode", NULL}; |
553 |
|
|
554 |
|
SHPClose(self->handle); |
555 |
|
self->handle = NULL; |
556 |
|
|
557 |
|
#if defined(SHPAPI_HAS_WIDE) && defined(Py_WIN_WIDE_FILENAMES) |
558 |
|
if (GetVersion() < 0x80000000) { /* On NT, so wide API available */ |
559 |
|
PyObject *wfile; |
560 |
|
if (PyArg_ParseTupleAndKeywords(args, kwds, "U|s:ShapeFile", kwlist, &wfile, &mode)) |
561 |
|
{ |
562 |
|
PyObject *wmode = PyUnicode_DecodeASCII(mode, strlen(mode), NULL); |
563 |
|
if (!wmode) return -1; |
564 |
|
self->handle = SHPOpenW(PyUnicode_AS_UNICODE(wfile), PyUnicode_AS_UNICODE(wmode)); |
565 |
|
Py_DECREF(wmode); |
566 |
|
if (!self->handle) |
567 |
|
{ |
568 |
|
PyErr_SetFromErrnoWithFilenameObject(PyExc_IOError, wfile); |
569 |
|
return -1; |
570 |
|
} |
571 |
|
} |
572 |
|
else |
573 |
|
{ |
574 |
|
/* Drop the argument parsing error as narrow |
575 |
|
strings are also valid. */ |
576 |
|
PyErr_Clear(); |
577 |
|
} |
578 |
|
} |
579 |
|
#endif |
580 |
|
|
581 |
|
if (!self->handle) |
582 |
{ |
{ |
583 |
PyErr_Format(PyExc_TypeError, "shapelib.ShapeFile.__init__ takes no keyword arguments"); |
if (!PyArg_ParseTupleAndKeywords(args, kwds, "et|s:ShapeFile", kwlist, |
584 |
return -1; |
Py_FileSystemDefaultEncoding, &file, &mode)) return -1; |
585 |
|
self->handle = SHPOpen(file, mode); |
586 |
|
|
587 |
|
if (!self->handle) |
588 |
|
{ |
589 |
|
PyErr_SetFromErrnoWithFilename(PyExc_IOError, file); |
590 |
|
PyMem_Free(file); |
591 |
|
return -1; |
592 |
|
} |
593 |
|
|
594 |
|
PyMem_Free(file); |
595 |
} |
} |
596 |
if (!PyArg_ParseTuple(args, "s|s", &file, &mode)) return -1; |
|
597 |
|
return 0; |
|
self->handle = SHPOpen(file, mode); |
|
|
return self->handle ? 0 : -1; |
|
598 |
} |
} |
599 |
|
|
600 |
|
|
601 |
|
|
602 |
static PyObject* shapefile_close(ShapeFileObject* self) |
static PyObject* shapefile_close(ShapeFileObject* self) |
603 |
{ |
{ |
604 |
SHPClose(self->handle); |
SHPClose(self->handle); |
606 |
Py_RETURN_NONE; |
Py_RETURN_NONE; |
607 |
} |
} |
608 |
|
|
609 |
|
|
610 |
|
|
611 |
static PyObject* shapefile_info(ShapeFileObject* self) |
static PyObject* shapefile_info(ShapeFileObject* self) |
612 |
{ |
{ |
613 |
SHPHandle handle = self->handle; |
SHPHandle handle = self->handle; |
617 |
handle->adBoundsMax[0], handle->adBoundsMax[1], handle->adBoundsMax[2], handle->adBoundsMax[3]); |
handle->adBoundsMax[0], handle->adBoundsMax[1], handle->adBoundsMax[2], handle->adBoundsMax[3]); |
618 |
} |
} |
619 |
|
|
620 |
|
|
621 |
|
|
622 |
static PyObject* shapefile_read_object(ShapeFileObject* self, PyObject* args) |
static PyObject* shapefile_read_object(ShapeFileObject* self, PyObject* args) |
623 |
{ |
{ |
624 |
int index; |
int index; |
625 |
SHPObject* object; |
SHPObject* object; |
626 |
SHPObjectObject* result; |
SHPObjectObject* result; |
627 |
|
|
628 |
if (!PyArg_ParseTuple(args, "i", &index)) return NULL; |
if (!PyArg_ParseTuple(args, "i:read_object", &index)) return NULL; |
629 |
|
|
630 |
object = SHPReadObject(self->handle, index); |
object = SHPReadObject(self->handle, index); |
631 |
if (!object) |
if (!object) |
644 |
return (PyObject*) result; |
return (PyObject*) result; |
645 |
} |
} |
646 |
|
|
647 |
|
|
648 |
|
|
649 |
static PyObject* shapefile_write_object(ShapeFileObject* self, PyObject* args) |
static PyObject* shapefile_write_object(ShapeFileObject* self, PyObject* args) |
650 |
{ |
{ |
651 |
int index, result; |
int index, result; |
652 |
PyObject* object; |
PyObject* object; |
653 |
|
|
654 |
if (!PyArg_ParseTuple(args, "iO", &index, &object)) return NULL; |
if (!PyArg_ParseTuple(args, "iO:write_object", &index, &object)) return NULL; |
655 |
|
|
656 |
if (!PyObject_IsInstance(object, (PyObject*)&SHPObjectType)) |
if (!PyObject_IsInstance(object, (PyObject*)&SHPObjectType)) |
657 |
{ |
{ |
681 |
|
|
682 |
static struct PyMethodDef shapefile_methods[] = |
static struct PyMethodDef shapefile_methods[] = |
683 |
{ |
{ |
684 |
{"close", (PyCFunction)shapefile_close, METH_NOARGS, "close the shape file" }, |
{"close", (PyCFunction)shapefile_close, METH_NOARGS, |
685 |
{"info", (PyCFunction)shapefile_info, METH_NOARGS, |
"close() -> None\n\n" |
686 |
"Return a tuple (NUM_SHAPES, TYPE, MIN, MAX) where NUM_SHAPES is the number of shapes in the file, TYPE is the " |
"close the shape file" }, |
687 |
"shape type and MIN and MAX are 4-element tuples with the min. and max. values of the data." }, |
{"info", (PyCFunction)shapefile_info, METH_NOARGS, |
688 |
{"read_object", (PyCFunction)shapefile_read_object, METH_VARARGS, "Return object number i" }, |
"info() -> (num_shapes, type, (x_min, y_min, z_min, m_min), (x_max, y_max, z_max, m_max))\n\n" |
689 |
{"write_object", (PyCFunction)shapefile_write_object, METH_VARARGS, "Write an object"}, |
"returns info about ShapeFile with:\n" |
690 |
{"cobject", (PyCFunction)shapefile_cobject, METH_NOARGS, "Return the shapelib SHPHandle as a Python CObject"}, |
"- num_shapes: the number of the objects in the file\n" |
691 |
|
"- type: the type of the shape file (SHPT_POINT, SHPT_POLYGON, ...)\n" |
692 |
|
"- (x_min, ...), (x_max, ...): 4D bounding box of the data in the shape file" }, |
693 |
|
{"read_object", (PyCFunction)shapefile_read_object, METH_VARARGS, |
694 |
|
"read_object(id) -> SHPObject\n\n" |
695 |
|
"Returns shape indexed by id" }, |
696 |
|
{"write_object", (PyCFunction)shapefile_write_object, METH_VARARGS, |
697 |
|
"write_object(id, object) -> id\n\n" |
698 |
|
"Write an object at index id, and returns id." |
699 |
|
"If id == -1, the object is appended at the end of the shape file."}, |
700 |
|
{"cobject", (PyCFunction)shapefile_cobject, METH_NOARGS, |
701 |
|
"cobject() -> CObject\n\n" |
702 |
|
"Return the shapelib SHPHandle as a Python CObject"}, |
703 |
{NULL} |
{NULL} |
704 |
}; |
}; |
705 |
|
|
722 |
char* file; |
char* file; |
723 |
int type; |
int type; |
724 |
ShapeFileObject* result; |
ShapeFileObject* result; |
725 |
|
SHPHandle handle = NULL; |
726 |
|
int wideargument = 0; |
727 |
|
|
728 |
|
#if defined(SHPAPI_HAS_WIDE) && defined(Py_WIN_WIDE_FILENAMES) |
729 |
|
if (GetVersion() < 0x80000000) { /* On NT, so wide API available */ |
730 |
|
PyObject *wfile; |
731 |
|
if (PyArg_ParseTuple(args, "Ui:create", &wfile, &type)) |
732 |
|
{ |
733 |
|
wideargument = 1; |
734 |
|
handle = SHPCreateW(PyUnicode_AS_UNICODE(wfile), type); |
735 |
|
if (!handle) |
736 |
|
{ |
737 |
|
PyErr_SetFromErrnoWithFilenameObject(PyExc_IOError, wfile); |
738 |
|
return NULL; |
739 |
|
} |
740 |
|
} |
741 |
|
else |
742 |
|
{ |
743 |
|
/* Drop the argument parsing error as narrow |
744 |
|
strings are also valid. */ |
745 |
|
PyErr_Clear(); |
746 |
|
} |
747 |
|
} |
748 |
|
#endif |
749 |
|
|
750 |
if (!PyArg_ParseTuple(args, "si", &file, &type)) return NULL; |
if (!handle) |
751 |
|
{ |
752 |
|
if (!PyArg_ParseTuple(args, "eti:create", Py_FileSystemDefaultEncoding, &file, &type)) return NULL; |
753 |
|
handle = SHPCreate(file, type); |
754 |
|
if (!handle) |
755 |
|
{ |
756 |
|
PyErr_SetFromErrnoWithFilename(PyExc_IOError, file); |
757 |
|
PyMem_Free(file); |
758 |
|
return NULL; |
759 |
|
} |
760 |
|
PyMem_Free(file); |
761 |
|
} |
762 |
|
|
763 |
result = PyObject_New(ShapeFileObject, &ShapeFileType); |
result = PyObject_New(ShapeFileObject, &ShapeFileType); |
764 |
if (!result) |
if (!result) |
765 |
{ |
{ |
766 |
|
SHPClose(handle); |
767 |
return PyErr_NoMemory(); |
return PyErr_NoMemory(); |
768 |
} |
} |
769 |
|
|
770 |
result->handle = SHPCreate(file, type); |
result->handle = handle; |
|
if (!result->handle) |
|
|
{ |
|
|
PyObject_Del((PyObject*)result); |
|
|
PyErr_SetString(PyExc_RuntimeError, "Failed to create ShapeFile"); |
|
|
return NULL; |
|
|
} |
|
|
|
|
771 |
return (PyObject*) result; |
return (PyObject*) result; |
772 |
} |
} |
773 |
|
|
788 |
static PyObject* shapelib_type_name(PyObject* module, PyObject* args) |
static PyObject* shapelib_type_name(PyObject* module, PyObject* args) |
789 |
{ |
{ |
790 |
int type; |
int type; |
791 |
if (!PyArg_ParseTuple(args, "i", &type)) return NULL; |
if (!PyArg_ParseTuple(args, "i:type_name", &type)) return NULL; |
792 |
return PyString_FromString(SHPTypeName(type)); |
return PyString_FromString(SHPTypeName(type)); |
793 |
} |
} |
794 |
|
|
795 |
static PyObject* shapelib_part_type_name(PyObject* module, PyObject* args) |
static PyObject* shapelib_part_type_name(PyObject* module, PyObject* args) |
796 |
{ |
{ |
797 |
int type; |
int type; |
798 |
if (!PyArg_ParseTuple(args, "i", &type)) return NULL; |
if (!PyArg_ParseTuple(args, "i:part_type_name", &type)) return NULL; |
799 |
return PyString_FromString(SHPPartTypeName(type)); |
return PyString_FromString(SHPPartTypeName(type)); |
800 |
} |
} |
801 |
|
|
802 |
static struct PyMethodDef shapelib_methods[] = |
static struct PyMethodDef shapelib_methods[] = |
803 |
{ |
{ |
804 |
{"open", (PyCFunction)shapelib_open, METH_VARARGS, "open a ShapeFile" }, |
{"open", (PyCFunction)shapelib_open, METH_VARARGS, |
805 |
{"create", (PyCFunction)shapelib_create, METH_VARARGS, "create a ShapeFile" }, |
"open(name [, mode='rb']) -> ShapeFile\n\n" |
806 |
{"c_api", (PyCFunction)shapelib_c_api, METH_NOARGS, "get C API of shapelib" }, |
"opens a ShapeFile" }, |
807 |
{"type_name", (PyCFunction)shapelib_type_name, METH_VARARGS, "return type as string" }, |
{"create", (PyCFunction)shapelib_create, METH_VARARGS, |
808 |
{"part_type_name", (PyCFunction)shapelib_part_type_name, METH_VARARGS, "return part type as string" }, |
"create(name, type) -> ShapeFile\n\n" |
809 |
|
"creates a ShapeFile of a certain type (one of SHPT_POINT, SHPT_POLYGON)" }, |
810 |
|
{"c_api", (PyCFunction)shapelib_c_api, METH_NOARGS, |
811 |
|
"c_api() -> CObject\n\n" |
812 |
|
"get C API of shapelib as a CObject" }, |
813 |
|
{"type_name", (PyCFunction)shapelib_type_name, METH_VARARGS, |
814 |
|
"type_name(type) -> string\n\n" |
815 |
|
"return type as string" }, |
816 |
|
{"part_type_name", (PyCFunction)shapelib_part_type_name, METH_VARARGS, |
817 |
|
"part_type_name(part_type) -> string\n\n" |
818 |
|
"return part type as string" }, |
819 |
{NULL} |
{NULL} |
820 |
}; |
}; |
821 |
|
|