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PyAPI: add BPY_execute_string_as_string

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Utility to execute a string and get the resulting string,
matching BPY_execute_string_as_number.

Not used just yet but generally useful function.
This commit is contained in:
Campbell Barton
2017-03-18 12:19:03 +11:00
parent d863b5182e
commit e392bb4937
4 changed files with 75 additions and 0 deletions
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37
source/blender/python/generic/py_capi_utils.c
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@@ -1070,4 +1070,41 @@ bool PyC_RunString_AsNumber(const char *expr, const char *filename, double *r_va
return ok;
}
bool PyC_RunString_AsString(const char *expr, const char *filename, char **r_value)
{
PyObject *py_dict, *retval;
bool ok = true;
PyObject *main_mod = NULL;
PyC_MainModule_Backup(&main_mod);
py_dict = PyC_DefaultNameSpace(filename);
retval = PyRun_String(expr, Py_eval_input, py_dict, py_dict);
if (retval == NULL) {
ok = false;
}
else {
const char *val;
Py_ssize_t val_len;
val = _PyUnicode_AsStringAndSize(retval, &val_len);
if (val == NULL && PyErr_Occurred()) {
ok = false;
}
else {
char *val_alloc = MEM_mallocN(val_len + 1, __func__);
memcpy(val_alloc, val, val_len + 1);
*r_value = val_alloc;
}
Py_DECREF(retval);
}
PyC_MainModule_Restore(main_mod);
return ok;
}
#endif /* #ifndef MATH_STANDALONE */

1
source/blender/python/generic/py_capi_utils.h
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@@ -81,6 +81,7 @@ int PyC_FlagSet_ToBitfield(PyC_FlagSet *items, PyObject *value, int *r_val
PyObject *PyC_FlagSet_FromBitfield(PyC_FlagSet *items, int flag);
bool PyC_RunString_AsNumber(const char *expr, const char *filename, double *r_value);
bool PyC_RunString_AsString(const char *expr, const char *filename, char **r_value);
int PyC_ParseBool(PyObject *o, void *p);