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|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup pythonintern
*
* This file defines the '_bpy' module which is used by python's 'bpy' package
* to access C defined builtin functions.
* A script writer should never directly access this module.
*/
/* Future-proof, See https://docs.python.org/3/c-api/arg.html#strings-and-buffers */
#define PY_SSIZE_T_CLEAN
#include <Python.h>
#include "BLI_string.h"
#include "BLI_string_utils.h"
#include "BLI_utildefines.h"
#include "BKE_appdir.h"
#include "BKE_blender_version.h"
#include "BKE_bpath.h"
#include "BKE_global.h" /* XXX, G_MAIN only */
#include "RNA_access.h"
#include "RNA_enum_types.h"
#include "RNA_prototypes.h"
#include "RNA_types.h"
#include "GPU_state.h"
#include "bpy.h"
#include "bpy_app.h"
#include "bpy_capi_utils.h"
#include "bpy_driver.h"
#include "bpy_library.h"
#include "bpy_operator.h"
#include "bpy_props.h"
#include "bpy_rna.h"
#include "bpy_rna_data.h"
#include "bpy_rna_gizmo.h"
#include "bpy_rna_id_collection.h"
#include "bpy_rna_types_capi.h"
#include "bpy_utils_previews.h"
#include "bpy_utils_units.h"
#include "../generic/py_capi_utils.h"
#include "../generic/python_utildefines.h"
/* external util modules */
#include "../generic/idprop_py_api.h"
#include "../generic/idprop_py_ui_api.h"
#include "bpy_msgbus.h"
#ifdef WITH_FREESTYLE
# include "BPy_Freestyle.h"
#endif
PyObject *bpy_package_py = NULL;
PyDoc_STRVAR(bpy_script_paths_doc,
".. function:: script_paths()\n"
"\n"
" Return 2 paths to blender scripts directories.\n"
"\n"
" :return: (system, user) strings will be empty when not found.\n"
" :rtype: tuple of strings\n");
static PyObject *bpy_script_paths(PyObject *UNUSED(self))
{
PyObject *ret = PyTuple_New(2);
PyObject *item;
const char *path;
path = BKE_appdir_folder_id(BLENDER_SYSTEM_SCRIPTS, NULL);
item = PyC_UnicodeFromByte(path ? path : "");
BLI_assert(item != NULL);
PyTuple_SET_ITEM(ret, 0, item);
path = BKE_appdir_folder_id(BLENDER_USER_SCRIPTS, NULL);
item = PyC_UnicodeFromByte(path ? path : "");
BLI_assert(item != NULL);
PyTuple_SET_ITEM(ret, 1, item);
return ret;
}
static bool bpy_blend_foreach_path_cb(BPathForeachPathData *bpath_data,
char *UNUSED(path_dst),
const char *path_src)
{
PyObject *py_list = bpath_data->user_data;
PyList_APPEND(py_list, PyC_UnicodeFromByte(path_src));
return false; /* Never edits the path. */
}
PyDoc_STRVAR(bpy_blend_paths_doc,
".. function:: blend_paths(absolute=False, packed=False, local=False)\n"
"\n"
" Returns a list of paths to external files referenced by the loaded .blend file.\n"
"\n"
" :arg absolute: When true the paths returned are made absolute.\n"
" :type absolute: boolean\n"
" :arg packed: When true skip file paths for packed data.\n"
" :type packed: boolean\n"
" :arg local: When true skip linked library paths.\n"
" :type local: boolean\n"
" :return: path list.\n"
" :rtype: list of strings\n");
static PyObject *bpy_blend_paths(PyObject *UNUSED(self), PyObject *args, PyObject *kw)
{
eBPathForeachFlag flag = 0;
PyObject *list;
bool absolute = false;
bool packed = false;
bool local = false;
static const char *_keywords[] = {"absolute", "packed", "local", NULL};
static _PyArg_Parser _parser = {
"|$" /* Optional keyword only arguments. */
"O&" /* `absolute` */
"O&" /* `packed` */
"O&" /* `local` */
":blend_paths",
_keywords,
0,
};
if (!_PyArg_ParseTupleAndKeywordsFast(args,
kw,
&_parser,
PyC_ParseBool,
&absolute,
PyC_ParseBool,
&packed,
PyC_ParseBool,
&local)) {
return NULL;
}
if (absolute) {
flag |= BKE_BPATH_FOREACH_PATH_ABSOLUTE;
}
if (!packed) {
flag |= BKE_BPATH_FOREACH_PATH_SKIP_PACKED;
}
if (local) {
flag |= BKE_BPATH_FOREACH_PATH_SKIP_LINKED;
}
list = PyList_New(0);
BKE_bpath_foreach_path_main(&(BPathForeachPathData){
.bmain = G_MAIN,
.callback_function = bpy_blend_foreach_path_cb,
.flag = flag,
.user_data = list,
});
return list;
}
PyDoc_STRVAR(bpy_flip_name_doc,
".. function:: flip_name(name, strip_digits=False)\n"
"\n"
" Flip a name between left/right sides, useful for \n"
" mirroring bone names.\n"
"\n"
" :arg name: Bone name to flip.\n"
" :type name: string\n"
" :arg strip_digits: Whether to remove ``.###`` suffix.\n"
" :type strip_digits: bool\n"
" :return: The flipped name.\n"
" :rtype: string\n");
static PyObject *bpy_flip_name(PyObject *UNUSED(self), PyObject *args, PyObject *kw)
{
const char *name_src = NULL;
Py_ssize_t name_src_len;
bool strip_digits = false;
static const char *_keywords[] = {"", "strip_digits", NULL};
static _PyArg_Parser _parser = {
"s#" /* `name` */
"|$" /* Optional, keyword only arguments. */
"O&" /* `strip_digits` */
":flip_name",
_keywords,
0,
};
if (!_PyArg_ParseTupleAndKeywordsFast(
args, kw, &_parser, &name_src, &name_src_len, PyC_ParseBool, &strip_digits)) {
return NULL;
}
/* Worst case we gain one extra byte (besides null-terminator) by changing
* "Left" to "Right", because only the first appearance of "Left" gets replaced. */
const size_t size = name_src_len + 2;
char *name_dst = PyMem_MALLOC(size);
const size_t name_dst_len = BLI_string_flip_side_name(name_dst, name_src, strip_digits, size);
PyObject *result = PyUnicode_FromStringAndSize(name_dst, name_dst_len);
PyMem_FREE(name_dst);
return result;
}
// PyDoc_STRVAR(bpy_user_resource_doc[] = /* now in bpy/utils.py */
static PyObject *bpy_user_resource(PyObject *UNUSED(self), PyObject *args, PyObject *kw)
{
const struct PyC_StringEnumItems type_items[] = {
{BLENDER_USER_DATAFILES, "DATAFILES"},
{BLENDER_USER_CONFIG, "CONFIG"},
{BLENDER_USER_SCRIPTS, "SCRIPTS"},
{BLENDER_USER_AUTOSAVE, "AUTOSAVE"},
{0, NULL},
};
struct PyC_StringEnum type = {type_items};
const char *subdir = NULL;
const char *path;
static const char *_keywords[] = {"type", "path", NULL};
static _PyArg_Parser _parser = {
"O&" /* `type` */
"|$" /* Optional keyword only arguments. */
"s" /* `path` */
":user_resource",
_keywords,
0,
};
if (!_PyArg_ParseTupleAndKeywordsFast(args, kw, &_parser, PyC_ParseStringEnum, &type, &subdir)) {
return NULL;
}
/* same logic as BKE_appdir_folder_id_create(),
* but best leave it up to the script author to create */
path = BKE_appdir_folder_id_user_notest(type.value_found, subdir);
return PyC_UnicodeFromByte(path ? path : "");
}
PyDoc_STRVAR(bpy_system_resource_doc,
".. function:: system_resource(type, path=\"\")\n"
"\n"
" Return a system resource path.\n"
"\n"
" :arg type: string in ['DATAFILES', 'SCRIPTS', 'PYTHON'].\n"
" :type type: string\n"
" :arg path: Optional subdirectory.\n"
" :type path: string\n");
static PyObject *bpy_system_resource(PyObject *UNUSED(self), PyObject *args, PyObject *kw)
{
const struct PyC_StringEnumItems type_items[] = {
{BLENDER_SYSTEM_DATAFILES, "DATAFILES"},
{BLENDER_SYSTEM_SCRIPTS, "SCRIPTS"},
{BLENDER_SYSTEM_PYTHON, "PYTHON"},
{0, NULL},
};
struct PyC_StringEnum type = {type_items};
const char *subdir = NULL;
const char *path;
static const char *_keywords[] = {"type", "path", NULL};
static _PyArg_Parser _parser = {
"O&" /* `type` */
"|$" /* Optional keyword only arguments. */
"s" /* `path` */
":system_resource",
_keywords,
0,
};
if (!_PyArg_ParseTupleAndKeywordsFast(args, kw, &_parser, PyC_ParseStringEnum, &type, &subdir)) {
return NULL;
}
path = BKE_appdir_folder_id(type.value_found, subdir);
return PyC_UnicodeFromByte(path ? path : "");
}
PyDoc_STRVAR(
bpy_resource_path_doc,
".. function:: resource_path(type, major=bpy.app.version[0], minor=bpy.app.version[1])\n"
"\n"
" Return the base path for storing system files.\n"
"\n"
" :arg type: string in ['USER', 'LOCAL', 'SYSTEM'].\n"
" :type type: string\n"
" :arg major: major version, defaults to current.\n"
" :type major: int\n"
" :arg minor: minor version, defaults to current.\n"
" :type minor: string\n"
" :return: the resource path (not necessarily existing).\n"
" :rtype: string\n");
static PyObject *bpy_resource_path(PyObject *UNUSED(self), PyObject *args, PyObject *kw)
{
const struct PyC_StringEnumItems type_items[] = {
{BLENDER_RESOURCE_PATH_USER, "USER"},
{BLENDER_RESOURCE_PATH_LOCAL, "LOCAL"},
{BLENDER_RESOURCE_PATH_SYSTEM, "SYSTEM"},
{0, NULL},
};
struct PyC_StringEnum type = {type_items};
int major = BLENDER_VERSION / 100, minor = BLENDER_VERSION % 100;
const char *path;
static const char *_keywords[] = {"type", "major", "minor", NULL};
static _PyArg_Parser _parser = {
"O&" /* `type` */
"|$" /* Optional keyword only arguments. */
"i" /* `major` */
"i" /* `minor` */
":resource_path",
_keywords,
0,
};
if (!_PyArg_ParseTupleAndKeywordsFast(
args, kw, &_parser, PyC_ParseStringEnum, &type, &major, &minor)) {
return NULL;
}
path = BKE_appdir_folder_id_version(type.value_found, (major * 100) + minor, false);
return PyC_UnicodeFromByte(path ? path : "");
}
/* This is only exposed for tests, see: `tests/python/bl_pyapi_bpy_driver_secure_eval.py`. */
PyDoc_STRVAR(bpy_driver_secure_code_test_doc,
".. function:: _driver_secure_code_test(code)\n"
"\n"
" Test if the script should be considered trusted.\n"
"\n"
" :arg code: The code to test.\n"
" :type code: code\n"
" :arg namespace: The namespace of values which are allowed.\n"
" :type namespace: dict\n"
" :arg verbose: Print the reason for considering insecure to the ``stderr``.\n"
" :type verbose: bool\n"
" :return: True when the script is considered trusted.\n"
" :rtype: bool\n");
static PyObject *bpy_driver_secure_code_test(PyObject *UNUSED(self), PyObject *args, PyObject *kw)
{
PyObject *py_code;
PyObject *py_namespace = NULL;
const bool verbose = false;
static const char *_keywords[] = {"code", "namespace", "verbose", NULL};
static _PyArg_Parser _parser = {
"O!" /* `expression` */
"|$" /* Optional keyword only arguments. */
"O!" /* `namespace` */
"O&" /* `verbose` */
":driver_secure_code_test",
_keywords,
0,
};
if (!_PyArg_ParseTupleAndKeywordsFast(args,
kw,
&_parser,
&PyCode_Type,
&py_code,
&PyDict_Type,
&py_namespace,
PyC_ParseBool,
&verbose)) {
return NULL;
}
return PyBool_FromLong(BPY_driver_secure_bytecode_test(py_code, py_namespace, verbose));
}
PyDoc_STRVAR(bpy_escape_identifier_doc,
".. function:: escape_identifier(string)\n"
"\n"
" Simple string escaping function used for animation paths.\n"
"\n"
" :arg string: text\n"
" :type string: string\n"
" :return: The escaped string.\n"
" :rtype: string\n");
static PyObject *bpy_escape_identifier(PyObject *UNUSED(self), PyObject *value)
{
Py_ssize_t value_str_len;
const char *value_str = PyUnicode_AsUTF8AndSize(value, &value_str_len);
if (value_str == NULL) {
PyErr_SetString(PyExc_TypeError, "expected a string");
return NULL;
}
const size_t size = (value_str_len * 2) + 1;
char *value_escape_str = PyMem_MALLOC(size);
const Py_ssize_t value_escape_str_len = BLI_str_escape(value_escape_str, value_str, size);
PyObject *value_escape;
if (value_escape_str_len == value_str_len) {
Py_INCREF(value);
value_escape = value;
}
else {
value_escape = PyUnicode_FromStringAndSize(value_escape_str, value_escape_str_len);
}
PyMem_FREE(value_escape_str);
return value_escape;
}
PyDoc_STRVAR(bpy_unescape_identifier_doc,
".. function:: unescape_identifier(string)\n"
"\n"
" Simple string un-escape function used for animation paths.\n"
" This performs the reverse of `escape_identifier`.\n"
"\n"
" :arg string: text\n"
" :type string: string\n"
" :return: The un-escaped string.\n"
" :rtype: string\n");
static PyObject *bpy_unescape_identifier(PyObject *UNUSED(self), PyObject *value)
{
Py_ssize_t value_str_len;
const char *value_str = PyUnicode_AsUTF8AndSize(value, &value_str_len);
if (value_str == NULL) {
PyErr_SetString(PyExc_TypeError, "expected a string");
return NULL;
}
const size_t size = value_str_len + 1;
char *value_unescape_str = PyMem_MALLOC(size);
const Py_ssize_t value_unescape_str_len = BLI_str_unescape(value_unescape_str, value_str, size);
PyObject *value_unescape;
if (value_unescape_str_len == value_str_len) {
Py_INCREF(value);
value_unescape = value;
}
else {
value_unescape = PyUnicode_FromStringAndSize(value_unescape_str, value_unescape_str_len);
}
PyMem_FREE(value_unescape_str);
return value_unescape;
}
/**
* \note only exposed for generating documentation, see: `doc/python_api/sphinx_doc_gen.py`.
*/
PyDoc_STRVAR(
bpy_context_members_doc,
".. function:: context_members()\n"
"\n"
" :return: A dict where the key is the context and the value is a tuple of it's members.\n"
" :rtype: dict\n");
static PyObject *bpy_context_members(PyObject *UNUSED(self))
{
extern const char *buttons_context_dir[];
extern const char *clip_context_dir[];
extern const char *file_context_dir[];
extern const char *image_context_dir[];
extern const char *node_context_dir[];
extern const char *screen_context_dir[];
extern const char *sequencer_context_dir[];
extern const char *text_context_dir[];
extern const char *view3d_context_dir[];
struct {
const char *name;
const char **dir;
} context_members_all[] = {
{"buttons", buttons_context_dir},
{"clip", clip_context_dir},
{"file", file_context_dir},
{"image", image_context_dir},
{"node", node_context_dir},
{"screen", screen_context_dir},
{"sequencer", sequencer_context_dir},
{"text", text_context_dir},
{"view3d", view3d_context_dir},
};
PyObject *result = _PyDict_NewPresized(ARRAY_SIZE(context_members_all));
for (int context_index = 0; context_index < ARRAY_SIZE(context_members_all); context_index++) {
const char *name = context_members_all[context_index].name;
const char **dir = context_members_all[context_index].dir;
int i;
for (i = 0; dir[i]; i++) {
/* Pass. */
}
PyObject *members = PyTuple_New(i);
for (i = 0; dir[i]; i++) {
PyTuple_SET_ITEM(members, i, PyUnicode_FromString(dir[i]));
}
PyDict_SetItemString(result, name, members);
Py_DECREF(members);
}
BLI_assert(PyDict_GET_SIZE(result) == ARRAY_SIZE(context_members_all));
return result;
}
/**
* \note only exposed for generating documentation, see: `doc/python_api/sphinx_doc_gen.py`.
*/
PyDoc_STRVAR(bpy_rna_enum_items_static_doc,
".. function:: rna_enum_items_static()\n"
"\n"
" :return: A dict where the key the name of the enum, the value is a tuple of "
":class:`bpy.types.EnumPropertyItem`.\n"
" :rtype: dict of \n");
static PyObject *bpy_rna_enum_items_static(PyObject *UNUSED(self))
{
#define DEF_ENUM(id) {STRINGIFY(id), id},
struct {
const char *id;
const EnumPropertyItem *items;
} enum_info[] = {
#include "RNA_enum_items.h"
};
PyObject *result = _PyDict_NewPresized(ARRAY_SIZE(enum_info));
for (int i = 0; i < ARRAY_SIZE(enum_info); i++) {
/* Include all items (including headings & separators), can be shown in documentation. */
const EnumPropertyItem *items = enum_info[i].items;
const int items_count = RNA_enum_items_count(items);
PyObject *value = PyTuple_New(items_count);
for (int item_index = 0; item_index < items_count; item_index++) {
PointerRNA ptr;
RNA_pointer_create(NULL, &RNA_EnumPropertyItem, (void *)&items[item_index], &ptr);
PyTuple_SET_ITEM(value, item_index, pyrna_struct_CreatePyObject(&ptr));
}
PyDict_SetItemString(result, enum_info[i].id, value);
Py_DECREF(value);
}
return result;
}
static PyMethodDef bpy_methods[] = {
{"script_paths", (PyCFunction)bpy_script_paths, METH_NOARGS, bpy_script_paths_doc},
{"blend_paths",
(PyCFunction)bpy_blend_paths,
METH_VARARGS | METH_KEYWORDS,
bpy_blend_paths_doc},
{"flip_name", (PyCFunction)bpy_flip_name, METH_VARARGS | METH_KEYWORDS, bpy_flip_name_doc},
{"user_resource", (PyCFunction)bpy_user_resource, METH_VARARGS | METH_KEYWORDS, NULL},
{"system_resource",
(PyCFunction)bpy_system_resource,
METH_VARARGS | METH_KEYWORDS,
bpy_system_resource_doc},
{"resource_path",
(PyCFunction)bpy_resource_path,
METH_VARARGS | METH_KEYWORDS,
bpy_resource_path_doc},
{"_driver_secure_code_test",
(PyCFunction)bpy_driver_secure_code_test,
METH_VARARGS | METH_KEYWORDS,
bpy_driver_secure_code_test_doc},
{"escape_identifier", (PyCFunction)bpy_escape_identifier, METH_O, bpy_escape_identifier_doc},
{"unescape_identifier",
(PyCFunction)bpy_unescape_identifier,
METH_O,
bpy_unescape_identifier_doc},
{"context_members", (PyCFunction)bpy_context_members, METH_NOARGS, bpy_context_members_doc},
{"rna_enum_items_static",
(PyCFunction)bpy_rna_enum_items_static,
METH_NOARGS,
bpy_rna_enum_items_static_doc},
{NULL, NULL, 0, NULL},
};
static PyObject *bpy_import_test(const char *modname)
{
PyObject *mod = PyImport_ImportModuleLevel(modname, NULL, NULL, NULL, 0);
GPU_bgl_end();
if (mod) {
Py_DECREF(mod);
}
else {
PyErr_Print();
PyErr_Clear();
}
return mod;
}
void BPy_init_modules(struct bContext *C)
{
PointerRNA ctx_ptr;
PyObject *mod;
/* Needs to be first since this dir is needed for future modules */
const char *const modpath = BKE_appdir_folder_id(BLENDER_SYSTEM_SCRIPTS, "modules");
if (modpath) {
// printf("bpy: found module path '%s'.\n", modpath);
PyObject *sys_path = PySys_GetObject("path"); /* borrow */
PyObject *py_modpath = PyUnicode_FromString(modpath);
PyList_Insert(sys_path, 0, py_modpath); /* add first */
Py_DECREF(py_modpath);
}
else {
printf("bpy: couldn't find 'scripts/modules', blender probably won't start.\n");
}
/* stand alone utility modules not related to blender directly */
IDProp_Init_Types(); /* not actually a submodule, just types */
IDPropertyUIData_Init_Types();
#ifdef WITH_FREESTYLE
Freestyle_Init();
#endif
mod = PyModule_New("_bpy");
/* add the module so we can import it */
PyDict_SetItemString(PyImport_GetModuleDict(), "_bpy", mod);
Py_DECREF(mod);
/* needs to be first so bpy_types can run */
PyModule_AddObject(mod, "types", BPY_rna_types());
/* needs to be first so bpy_types can run */
BPY_library_load_type_ready();
BPY_rna_data_context_type_ready();
BPY_rna_gizmo_module(mod);
bpy_import_test("bpy_types");
PyModule_AddObject(mod, "data", BPY_rna_module()); /* imports bpy_types by running this */
bpy_import_test("bpy_types");
PyModule_AddObject(mod, "props", BPY_rna_props());
/* ops is now a python module that does the conversion from SOME_OT_foo -> some.foo */
PyModule_AddObject(mod, "ops", BPY_operator_module());
PyModule_AddObject(mod, "app", BPY_app_struct());
PyModule_AddObject(mod, "_utils_units", BPY_utils_units());
PyModule_AddObject(mod, "_utils_previews", BPY_utils_previews_module());
PyModule_AddObject(mod, "msgbus", BPY_msgbus_module());
RNA_pointer_create(NULL, &RNA_Context, C, &ctx_ptr);
bpy_context_module = (BPy_StructRNA *)pyrna_struct_CreatePyObject(&ctx_ptr);
/* odd that this is needed, 1 ref on creation and another for the module
* but without we get a crash on exit */
Py_INCREF(bpy_context_module);
PyModule_AddObject(mod, "context", (PyObject *)bpy_context_module);
/* Register methods and property get/set for RNA types. */
BPY_rna_types_extend_capi();
for (int i = 0; bpy_methods[i].ml_name; i++) {
PyMethodDef *m = &bpy_methods[i];
/* Currently there is no need to support these. */
BLI_assert((m->ml_flags & (METH_CLASS | METH_STATIC)) == 0);
PyModule_AddObject(mod, m->ml_name, (PyObject *)PyCFunction_New(m, NULL));
}
/* Register functions (`bpy_rna.c`). */
PyModule_AddObject(mod,
meth_bpy_register_class.ml_name,
(PyObject *)PyCFunction_New(&meth_bpy_register_class, NULL));
PyModule_AddObject(mod,
meth_bpy_unregister_class.ml_name,
(PyObject *)PyCFunction_New(&meth_bpy_unregister_class, NULL));
PyModule_AddObject(mod,
meth_bpy_owner_id_get.ml_name,
(PyObject *)PyCFunction_New(&meth_bpy_owner_id_get, NULL));
PyModule_AddObject(mod,
meth_bpy_owner_id_set.ml_name,
(PyObject *)PyCFunction_New(&meth_bpy_owner_id_set, NULL));
/* add our own modules dir, this is a python package */
bpy_package_py = bpy_import_test("bpy");
}
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