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/**
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Contributor(s): Campbell Barton
*
* ***** END GPL LICENSE BLOCK *****
*/
#include "bpy_util.h"
#include "BLI_dynstr.h"
#include "MEM_guardedalloc.h"
#include "BKE_report.h"
#include "BKE_context.h"
#include "../generic/py_capi_utils.h"
bContext* __py_context = NULL;
bContext* BPy_GetContext(void) { return __py_context; };
void BPy_SetContext(bContext *C) { __py_context= C; };
int BPY_class_validate(const char *class_type, PyObject *class, PyObject *base_class, BPY_class_attr_check* class_attrs, PyObject **py_class_attrs)
{
PyObject *item, *fitem;
PyObject *py_arg_count;
int i, arg_count;
if (base_class) {
if (!PyObject_IsSubclass(class, base_class)) {
PyObject *name= PyObject_GetAttrString(base_class, "__name__");
PyErr_Format(PyExc_AttributeError, "expected %s subclass of class \"%s\"", class_type, name ? _PyUnicode_AsString(name):"<UNKNOWN>");
Py_XDECREF(name);
return -1;
}
}
for(i= 0;class_attrs->name; class_attrs++, i++) {
item = PyObject_GetAttrString(class, class_attrs->name);
if (py_class_attrs)
py_class_attrs[i]= item;
if (item==NULL) {
if ((class_attrs->flag & BPY_CLASS_ATTR_OPTIONAL)==0) {
PyErr_Format(PyExc_AttributeError, "expected %s class to have an \"%s\" attribute", class_type, class_attrs->name);
return -1;
}
PyErr_Clear();
}
else {
Py_DECREF(item); /* no need to keep a ref, the class owns it */
if((item==Py_None) && (class_attrs->flag & BPY_CLASS_ATTR_NONE_OK)) {
/* dont do anything, this is ok, dont bother checking other types */
}
else {
switch(class_attrs->type) {
case 's':
if (PyUnicode_Check(item)==0) {
PyErr_Format(PyExc_AttributeError, "expected %s class \"%s\" attribute to be a string", class_type, class_attrs->name);
return -1;
}
if(class_attrs->len != -1 && class_attrs->len < PyUnicode_GetSize(item)) {
PyErr_Format(PyExc_AttributeError, "expected %s class \"%s\" attribute string to be shorter then %d", class_type, class_attrs->name, class_attrs->len);
return -1;
}
break;
case 'l':
if (PyList_Check(item)==0) {
PyErr_Format(PyExc_AttributeError, "expected %s class \"%s\" attribute to be a list", class_type, class_attrs->name);
return -1;
}
if(class_attrs->len != -1 && class_attrs->len < PyList_GET_SIZE(item)) {
PyErr_Format(PyExc_AttributeError, "expected %s class \"%s\" attribute list to be shorter then %d", class_type, class_attrs->name, class_attrs->len);
return -1;
}
break;
case 'f':
if (PyMethod_Check(item))
fitem= PyMethod_Function(item); /* py 2.x */
else
fitem= item; /* py 3.x */
if (PyFunction_Check(fitem)==0) {
PyErr_Format(PyExc_AttributeError, "expected %s class \"%s\" attribute to be a function", class_type, class_attrs->name);
return -1;
}
if (class_attrs->arg_count >= 0) { /* -1 if we dont care*/
py_arg_count = PyObject_GetAttrString(PyFunction_GET_CODE(fitem), "co_argcount");
arg_count = PyLong_AsSsize_t(py_arg_count);
Py_DECREF(py_arg_count);
if (arg_count != class_attrs->arg_count) {
PyErr_Format(PyExc_AttributeError, "expected %s class \"%s\" function to have %d args", class_type, class_attrs->name, class_attrs->arg_count);
return -1;
}
}
break;
}
}
}
}
return 0;
}
char *BPy_enum_as_string(EnumPropertyItem *item)
{
DynStr *dynstr= BLI_dynstr_new();
EnumPropertyItem *e;
char *cstring;
for (e= item; item->identifier; item++) {
if(item->identifier[0])
BLI_dynstr_appendf(dynstr, (e==item)?"'%s'":", '%s'", item->identifier);
}
cstring = BLI_dynstr_get_cstring(dynstr);
BLI_dynstr_free(dynstr);
return cstring;
}
int BPy_reports_to_error(ReportList *reports)
{
char *report_str;
report_str= BKE_reports_string(reports, RPT_ERROR);
if(report_str) {
PyErr_SetString(PyExc_SystemError, report_str);
MEM_freeN(report_str);
}
return (report_str != NULL);
}
int BPy_errors_to_report(ReportList *reports)
{
PyObject *pystring;
PyObject *pystring_format= NULL; // workaround, see below
char *cstring;
const char *filename;
int lineno;
if (!PyErr_Occurred())
return 1;
/* less hassle if we allow NULL */
if(reports==NULL) {
PyErr_Print();
PyErr_Clear();
return 1;
}
pystring= PyC_ExceptionBuffer();
if(pystring==NULL) {
BKE_report(reports, RPT_ERROR, "unknown py-exception, could not convert");
return 0;
}
PyC_FileAndNum(&filename, &lineno);
if(filename==NULL)
filename= "<unknown location>";
cstring= _PyUnicode_AsString(pystring);
#if 0 // ARG!. workaround for a bug in blenders use of vsnprintf
BKE_reportf(reports, RPT_ERROR, "%s\nlocation:%s:%d\n", cstring, filename, lineno);
#else
pystring_format= PyUnicode_FromFormat("%s\nlocation:%s:%d\n", cstring, filename, lineno);
cstring= _PyUnicode_AsString(pystring_format);
BKE_report(reports, RPT_ERROR, cstring);
#endif
fprintf(stderr, "%s\nlocation:%s:%d\n", cstring, filename, lineno); // not exactly needed. just for testing
Py_DECREF(pystring);
Py_DECREF(pystring_format); // workaround
return 1;
}
/* array utility function */
int PyC_AsArray(void *array, PyObject *value, int length, PyTypeObject *type, char *error_prefix)
{
PyObject *value_fast;
int value_len;
int i;
if(!(value_fast=PySequence_Fast(value, error_prefix))) {
return -1;
}
value_len= PySequence_Fast_GET_SIZE(value_fast);
if(value_len != length) {
Py_DECREF(value);
PyErr_Format(PyExc_TypeError, "%.200s: invalid sequence length. expected %d, got %d", error_prefix, length, value_len);
return -1;
}
/* for each type */
if(type == &PyFloat_Type) {
float *array_float= array;
for(i=0; i<length; i++) {
array_float[i] = PyFloat_AsDouble(PySequence_Fast_GET_ITEM(value_fast, i));
}
}
else if(type == &PyLong_Type) {
int *array_int= array;
for(i=0; i<length; i++) {
array_int[i] = PyLong_AsSsize_t(PySequence_Fast_GET_ITEM(value_fast, i));
}
}
else if(type == &PyBool_Type) {
int *array_bool= array;
for(i=0; i<length; i++) {
array_bool[i] = (PyLong_AsSsize_t(PySequence_Fast_GET_ITEM(value_fast, i)) != 0);
}
}
else {
Py_DECREF(value_fast);
PyErr_Format(PyExc_TypeError, "%s: internal error %s is invalid", error_prefix, type->tp_name);
return -1;
}
Py_DECREF(value_fast);
if(PyErr_Occurred()) {
PyErr_Format(PyExc_TypeError, "%s: one or more items could not be used as a %s", error_prefix, type->tp_name);
return -1;
}
return 0;
}
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