9a75c29bf8
Own regression in [0] caused add-ons not to run the unregister function on exit. [0]: e1b72e569decd4fdee87eb1ae2b43569d8c6bd26
738 lines
25 KiB
Python
738 lines
25 KiB
Python
# SPDX-FileCopyrightText: 2011-2023 Blender Authors
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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__all__ = (
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"paths",
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"modules",
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"check",
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"enable",
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"disable",
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"disable_all",
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"reset_all",
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"module_bl_info",
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)
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import bpy as _bpy
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_preferences = _bpy.context.preferences
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error_encoding = False
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# (name, file, path)
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error_duplicates = []
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addons_fake_modules = {}
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# called only once at startup, avoids calling 'reset_all', correct but slower.
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def _initialize_once():
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for path in paths():
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_bpy.utils._sys_path_ensure_append(path)
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_initialize_extensions_repos_once()
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for addon in _preferences.addons:
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enable(addon.module)
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def paths():
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return [
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path for subdir in (
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# RELEASE SCRIPTS: official scripts distributed in Blender releases.
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"addons",
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# CONTRIB SCRIPTS: good for testing but not official scripts yet
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# if folder addons_contrib/ exists, scripts in there will be loaded too.
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"addons_contrib",
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)
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for path in _bpy.utils.script_paths(subdir=subdir)
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]
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# A version of `paths` that includes extension repositories returning a list `(path, package)` pairs.
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#
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# Notes on the ``package`` value.
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#
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# - For top-level modules (the "addons" directories, the value is an empty string)
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# because those add-ons can be imported directly.
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# - For extension repositories the value is a module string (which can be imported for example)
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# where any modules within the `path` can be imported as a sub-module.
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# So for example, given a list value of: `("/tmp/repo", "bl_ext.temp_repo")`.
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#
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# An add-on located at `/tmp/repo/my_handy_addon.py` will have a unique module path of:
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# `bl_ext.temp_repo.my_handy_addon`, which can be imported and will be the value of it's `Addon.module`.
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def _paths_with_extension_repos():
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import os
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addon_paths = [(path, "") for path in paths()]
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if _preferences.experimental.use_extension_repos:
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for repo in _preferences.filepaths.extension_repos:
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dirpath = repo.directory
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if not os.path.isdir(dirpath):
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continue
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addon_paths.append((dirpath, "%s.%s" % (_ext_base_pkg_idname, repo.module)))
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return addon_paths
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def _fake_module(mod_name, mod_path, speedy=True, force_support=None):
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global error_encoding
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import os
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if _bpy.app.debug_python:
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print("fake_module", mod_path, mod_name)
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import ast
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ModuleType = type(ast)
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try:
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file_mod = open(mod_path, "r", encoding='UTF-8')
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except OSError as ex:
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print("Error opening file:", mod_path, ex)
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return None
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with file_mod:
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if speedy:
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lines = []
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line_iter = iter(file_mod)
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l = ""
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while not l.startswith("bl_info"):
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try:
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l = line_iter.readline()
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except UnicodeDecodeError as ex:
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if not error_encoding:
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error_encoding = True
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print("Error reading file as UTF-8:", mod_path, ex)
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return None
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if len(l) == 0:
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break
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while l.rstrip():
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lines.append(l)
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try:
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l = line_iter.readline()
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except UnicodeDecodeError as ex:
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if not error_encoding:
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error_encoding = True
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print("Error reading file as UTF-8:", mod_path, ex)
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return None
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data = "".join(lines)
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else:
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data = file_mod.read()
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del file_mod
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try:
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ast_data = ast.parse(data, filename=mod_path)
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except BaseException:
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print("Syntax error 'ast.parse' can't read:", repr(mod_path))
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import traceback
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traceback.print_exc()
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ast_data = None
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body_info = None
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if ast_data:
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for body in ast_data.body:
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if body.__class__ == ast.Assign:
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if len(body.targets) == 1:
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if getattr(body.targets[0], "id", "") == "bl_info":
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body_info = body
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break
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if body_info:
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try:
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mod = ModuleType(mod_name)
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mod.bl_info = ast.literal_eval(body.value)
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mod.__file__ = mod_path
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mod.__time__ = os.path.getmtime(mod_path)
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except:
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print("AST error parsing bl_info for:", repr(mod_path))
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import traceback
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traceback.print_exc()
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return None
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if force_support is not None:
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mod.bl_info["support"] = force_support
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return mod
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else:
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print(
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"fake_module: addon missing 'bl_info' "
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"gives bad performance!:",
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repr(mod_path),
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)
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return None
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def modules_refresh(*, module_cache=addons_fake_modules):
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global error_encoding
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import os
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error_encoding = False
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error_duplicates.clear()
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modules_stale = set(module_cache.keys())
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for path, pkg_id in _paths_with_extension_repos():
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# Force all user contributed add-ons to be 'TESTING'.
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force_support = 'TESTING' if ((not pkg_id) and path.endswith("addons_contrib")) else None
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for mod_name, mod_path in _bpy.path.module_names(path, package=pkg_id):
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modules_stale.discard(mod_name)
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mod = module_cache.get(mod_name)
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if mod:
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if mod.__file__ != mod_path:
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print(
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"multiple addons with the same name:\n"
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" %r\n"
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" %r" % (mod.__file__, mod_path)
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)
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error_duplicates.append((mod.bl_info["name"], mod.__file__, mod_path))
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elif mod.__time__ != os.path.getmtime(mod_path):
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print(
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"reloading addon:",
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mod_name,
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mod.__time__,
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os.path.getmtime(mod_path),
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repr(mod_path),
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)
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del module_cache[mod_name]
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mod = None
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if mod is None:
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mod = _fake_module(
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mod_name,
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mod_path,
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force_support=force_support,
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)
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if mod:
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module_cache[mod_name] = mod
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# just in case we get stale modules, not likely
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for mod_stale in modules_stale:
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del module_cache[mod_stale]
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del modules_stale
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def modules(*, module_cache=addons_fake_modules, refresh=True):
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if refresh or ((module_cache is addons_fake_modules) and modules._is_first):
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modules_refresh(module_cache=module_cache)
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modules._is_first = False
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mod_list = list(module_cache.values())
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mod_list.sort(
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key=lambda mod: (
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mod.bl_info.get("category", ""),
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mod.bl_info.get("name", ""),
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)
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)
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return mod_list
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modules._is_first = True
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def check(module_name):
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"""
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Returns the loaded state of the addon.
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:arg module_name: The name of the addon and module.
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:type module_name: string
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:return: (loaded_default, loaded_state)
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:rtype: tuple of booleans
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"""
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import sys
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loaded_default = module_name in _preferences.addons
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mod = sys.modules.get(module_name)
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loaded_state = (
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(mod is not None) and
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getattr(mod, "__addon_enabled__", Ellipsis)
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)
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if loaded_state is Ellipsis:
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print(
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"Warning: addon-module", module_name, "found module "
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"but without '__addon_enabled__' field, "
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"possible name collision from file:",
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repr(getattr(mod, "__file__", "<unknown>")),
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)
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loaded_state = False
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if mod and getattr(mod, "__addon_persistent__", False):
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loaded_default = True
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return loaded_default, loaded_state
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# utility functions
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def _addon_ensure(module_name):
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addons = _preferences.addons
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addon = addons.get(module_name)
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if not addon:
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addon = addons.new()
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addon.module = module_name
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def _addon_remove(module_name):
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addons = _preferences.addons
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while module_name in addons:
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addon = addons.get(module_name)
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if addon:
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addons.remove(addon)
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def enable(module_name, *, default_set=False, persistent=False, handle_error=None):
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"""
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Enables an addon by name.
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:arg module_name: the name of the addon and module.
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:type module_name: string
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:arg default_set: Set the user-preference.
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:type default_set: bool
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:arg persistent: Ensure the addon is enabled for the entire session (after loading new files).
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:type persistent: bool
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:arg handle_error: Called in the case of an error, taking an exception argument.
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:type handle_error: function
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:return: the loaded module or None on failure.
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:rtype: module
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"""
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import os
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import sys
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import importlib
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from bpy_restrict_state import RestrictBlend
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if handle_error is None:
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def handle_error(_ex):
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import traceback
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traceback.print_exc()
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# reload if the mtime changes
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mod = sys.modules.get(module_name)
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# chances of the file _not_ existing are low, but it could be removed
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if mod and os.path.exists(mod.__file__):
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if getattr(mod, "__addon_enabled__", False):
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# This is an unlikely situation,
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# re-register if the module is enabled.
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# Note: the UI doesn't allow this to happen,
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# in most cases the caller should 'check()' first.
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try:
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mod.unregister()
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except BaseException as ex:
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print(
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"Exception in module unregister():",
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repr(getattr(mod, "__file__", module_name)),
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)
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handle_error(ex)
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return None
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mod.__addon_enabled__ = False
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mtime_orig = getattr(mod, "__time__", 0)
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mtime_new = os.path.getmtime(mod.__file__)
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if mtime_orig != mtime_new:
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print("module changed on disk:", repr(mod.__file__), "reloading...")
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try:
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importlib.reload(mod)
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except BaseException as ex:
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handle_error(ex)
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del sys.modules[module_name]
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return None
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mod.__addon_enabled__ = False
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# add the addon first it may want to initialize its own preferences.
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# must remove on fail through.
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if default_set:
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_addon_ensure(module_name)
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# Split registering up into 3 steps so we can undo
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# if it fails par way through.
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# Disable the context: using the context at all
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# while loading an addon is really bad, don't do it!
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with RestrictBlend():
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# 1) try import
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try:
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# Use instead of `__import__` so that sub-modules can eventually be supported.
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# This is also documented to be the preferred way to import modules.
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mod = importlib.import_module(module_name)
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if mod.__file__ is None:
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# This can happen when the addon has been removed but there are
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# residual `.pyc` files left behind.
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raise ImportError(name=module_name)
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mod.__time__ = os.path.getmtime(mod.__file__)
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mod.__addon_enabled__ = False
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except BaseException as ex:
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# If the add-on doesn't exist, don't print full trace-back because the back-trace is in this case
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# is verbose without any useful details. A missing path is better communicated in a short message.
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# Account for `ImportError` & `ModuleNotFoundError`.
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if isinstance(ex, ImportError) and ex.name == module_name:
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print("Add-on not loaded:", repr(module_name), "cause:", str(ex))
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else:
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handle_error(ex)
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if default_set:
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_addon_remove(module_name)
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return None
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# 1.1) Fail when add-on is too old.
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# This is a temporary 2.8x migration check, so we can manage addons that are supported.
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if mod.bl_info.get("blender", (0, 0, 0)) < (2, 80, 0):
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if _bpy.app.debug:
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print("Warning: Add-on '%s' was not upgraded for 2.80, ignoring" % module_name)
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return None
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# 2) Try register collected modules.
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# Removed register_module, addons need to handle their own registration now.
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from _bpy import _bl_owner_id_get, _bl_owner_id_set
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owner_id_prev = _bl_owner_id_get()
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_bl_owner_id_set(module_name)
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# 3) Try run the modules register function.
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try:
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mod.register()
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except BaseException as ex:
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print(
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"Exception in module register():",
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getattr(mod, "__file__", module_name),
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)
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handle_error(ex)
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del sys.modules[module_name]
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if default_set:
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_addon_remove(module_name)
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return None
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finally:
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_bl_owner_id_set(owner_id_prev)
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# * OK loaded successfully! *
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mod.__addon_enabled__ = True
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mod.__addon_persistent__ = persistent
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if _bpy.app.debug_python:
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print("\taddon_utils.enable", mod.__name__)
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return mod
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def disable(module_name, *, default_set=False, handle_error=None):
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"""
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Disables an addon by name.
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:arg module_name: The name of the addon and module.
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:type module_name: string
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:arg default_set: Set the user-preference.
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:type default_set: bool
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:arg handle_error: Called in the case of an error, taking an exception argument.
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:type handle_error: function
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"""
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import sys
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if handle_error is None:
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def handle_error(_ex):
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import traceback
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traceback.print_exc()
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mod = sys.modules.get(module_name)
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# Possible this add-on is from a previous session and didn't load a
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# module this time. So even if the module is not found, still disable
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# the add-on in the user preferences.
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if mod and getattr(mod, "__addon_enabled__", False) is not False:
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mod.__addon_enabled__ = False
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mod.__addon_persistent = False
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try:
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mod.unregister()
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except BaseException as ex:
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mod_path = getattr(mod, "__file__", module_name)
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print("Exception in module unregister():", repr(mod_path))
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del mod_path
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handle_error(ex)
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else:
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print(
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"addon_utils.disable: %s not %s" % (
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module_name,
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"disabled" if mod is None else "loaded")
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)
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# could be in more than once, unlikely but better do this just in case.
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if default_set:
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_addon_remove(module_name)
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if _bpy.app.debug_python:
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print("\taddon_utils.disable", module_name)
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|
|
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def reset_all(*, reload_scripts=False):
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"""
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Sets the addon state based on the user preferences.
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"""
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import sys
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|
|
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# initializes addons_fake_modules
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modules_refresh()
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|
|
|
for path, pkg_id in _paths_with_extension_repos():
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if not pkg_id:
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_bpy.utils._sys_path_ensure_append(path)
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for mod_name, _mod_path in _bpy.path.module_names(path, package=pkg_id):
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is_enabled, is_loaded = check(mod_name)
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# first check if reload is needed before changing state.
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if reload_scripts:
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import importlib
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mod = sys.modules.get(mod_name)
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if mod:
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importlib.reload(mod)
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if is_enabled == is_loaded:
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pass
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elif is_enabled:
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enable(mod_name)
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elif is_loaded:
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print("\taddon_utils.reset_all unloading", mod_name)
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disable(mod_name)
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|
|
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def disable_all():
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import sys
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# Collect modules to disable first because dict can be modified as we disable.
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|
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# NOTE: don't use `getattr(item[1], "__addon_enabled__", False)` because this runs on all modules,
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# including 3rd party modules unrelated to Blender.
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#
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# Some modules may have their own `__getattr__` and either:
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# - Not raise an `AttributeError` (is they should),
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# causing `hasattr` & `getattr` to raise an exception instead of treating the attribute as missing.
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# - Generate modules dynamically, modifying `sys.modules` which is being iterated over,
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# causing a RuntimeError: "dictionary changed size during iteration".
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#
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# Either way, running 3rd party logic here can cause undefined behavior.
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# Use direct `__dict__` access to bypass `__getattr__`, see: #111649.
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addon_modules = [
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item for item in sys.modules.items()
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if type(mod_dict := getattr(item[1], "__dict__", None)) is dict
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if mod_dict.get("__addon_enabled__")
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]
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# Check the enabled state again since it's possible the disable call
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# of one add-on disables others.
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for mod_name, mod in addon_modules:
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if getattr(mod, "__addon_enabled__", False):
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disable(mod_name)
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|
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def _blender_manual_url_prefix():
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return "https://docs.blender.org/manual/%s/%d.%d" % (_bpy.utils.manual_language_code(), *_bpy.app.version[:2])
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|
|
def module_bl_info(mod, *, info_basis=None):
|
|
if info_basis is None:
|
|
info_basis = {
|
|
"name": "",
|
|
"author": "",
|
|
"version": (),
|
|
"blender": (),
|
|
"location": "",
|
|
"description": "",
|
|
"doc_url": "",
|
|
"support": 'COMMUNITY',
|
|
"category": "",
|
|
"warning": "",
|
|
"show_expanded": False,
|
|
}
|
|
|
|
addon_info = getattr(mod, "bl_info", {})
|
|
|
|
# avoid re-initializing
|
|
if "_init" in addon_info:
|
|
return addon_info
|
|
|
|
if not addon_info:
|
|
mod.bl_info = addon_info
|
|
|
|
for key, value in info_basis.items():
|
|
addon_info.setdefault(key, value)
|
|
|
|
if not addon_info["name"]:
|
|
addon_info["name"] = mod.__name__
|
|
|
|
doc_url = addon_info["doc_url"]
|
|
if doc_url:
|
|
doc_url_prefix = "{BLENDER_MANUAL_URL}"
|
|
if doc_url_prefix in doc_url:
|
|
addon_info["doc_url"] = doc_url.replace(
|
|
doc_url_prefix,
|
|
_blender_manual_url_prefix(),
|
|
)
|
|
|
|
addon_info["_init"] = None
|
|
return addon_info
|
|
|
|
|
|
# -----------------------------------------------------------------------------
|
|
# Extensions
|
|
|
|
# Module-like class, store singletons.
|
|
class _ext_global:
|
|
__slots__ = ()
|
|
|
|
# Store a map of `preferences.filepaths.extension_repos` -> `module_id`.
|
|
# Only needed to detect renaming between `bpy.app.handlers.extension_repos_update_{pre & post}` events.
|
|
idmap = {}
|
|
|
|
# The base package created by `JunctionModuleHandle`.
|
|
module_handle = None
|
|
|
|
|
|
# The name (in `sys.modules`) keep this short because it's stored as part of add-on modules name.
|
|
_ext_base_pkg_idname = "bl_ext"
|
|
|
|
|
|
def _extension_preferences_idmap():
|
|
repos_idmap = {}
|
|
if _preferences.experimental.use_extension_repos:
|
|
for repo in _preferences.filepaths.extension_repos:
|
|
repos_idmap[repo.as_pointer()] = repo.module
|
|
return repos_idmap
|
|
|
|
|
|
def _extension_dirpath_from_preferences():
|
|
repos_dict = {}
|
|
if _preferences.experimental.use_extension_repos:
|
|
for repo in _preferences.filepaths.extension_repos:
|
|
repos_dict[repo.module] = repo.directory
|
|
return repos_dict
|
|
|
|
|
|
def _extension_dirpath_from_handle():
|
|
repos_info = {}
|
|
for module_id, module in _ext_global.module_handle.submodule_items():
|
|
# Account for it being unset although this should never happen unless script authors
|
|
# meddle with the modules.
|
|
try:
|
|
dirpath = module.__path__[0]
|
|
except BaseException:
|
|
dirpath = ""
|
|
repos_info[module_id] = dirpath
|
|
return repos_info
|
|
|
|
# Use `bpy.app.handlers.extension_repos_update_{pre/post}` to track changes to extension repositories
|
|
# and sync the changes to the Python module.
|
|
|
|
|
|
@_bpy.app.handlers.persistent
|
|
def _initialize_extension_repos_pre(*_):
|
|
_ext_global.idmap = _extension_preferences_idmap()
|
|
|
|
|
|
@_bpy.app.handlers.persistent
|
|
def _initialize_extension_repos_post(*_):
|
|
# Map `module_id` -> `dirpath`.
|
|
repos_info_prev = _extension_dirpath_from_handle()
|
|
repos_info_next = _extension_dirpath_from_preferences()
|
|
|
|
# Map `repo.as_pointer()` -> `module_id`.
|
|
repos_idmap_prev = _ext_global.idmap
|
|
repos_idmap_next = _extension_preferences_idmap()
|
|
|
|
# Map `module_id` -> `repo.as_pointer()`.
|
|
repos_idmap_next_reverse = {value: key for key, value in repos_idmap_next.items()}
|
|
|
|
# Mainly needed when the `preferences.experimental.use_extension_repos` option is enabled at run-time.
|
|
#
|
|
# Filter `repos_idmap_prev` so only items which were also in the `repos_info_prev` are included.
|
|
# This is an awkward situation, they should be in sync, however when enabling the experimental option
|
|
# means the preferences wont have changed, but the module will not be in sync with the preferences.
|
|
# Support this by removing items in `repos_idmap_prev` which aren't also initialized in the managed package.
|
|
#
|
|
# The only situation this would be useful to keep is if we want to support renaming a package
|
|
# that manipulates all add-ons using it, when those add-ons are in the preferences but have not had
|
|
# their package loaded. It's possible we want to do this but is also reasonably obscure.
|
|
for repo_id_prev, module_id_prev in list(repos_idmap_prev.items()):
|
|
if module_id_prev not in repos_info_prev:
|
|
del repos_idmap_prev[repo_id_prev]
|
|
|
|
# NOTE(@ideasman42): supporting renaming at all is something we might limit to extensions
|
|
# which have no add-ons loaded as supporting renaming add-ons in-place seems error prone as the add-on
|
|
# may define internal variables based on the full package path.
|
|
|
|
submodules_add = [] # List of module names to add: `(module_id, dirpath)`.
|
|
submodules_del = [] # List of module names to remove: `module_id`.
|
|
submodules_rename_module = [] # List of module names: `(module_id_src, module_id_dst)`.
|
|
submodules_rename_dirpath = [] # List of module names: `(module_id, dirpath)`.
|
|
|
|
renamed_prev = set()
|
|
renamed_next = set()
|
|
|
|
# Detect rename modules & module directories.
|
|
for module_id_next, dirpath_next in repos_info_next.items():
|
|
# Lookup never fails, as the "next" values use: `preferences.filepaths.extension_repos`.
|
|
repo_id = repos_idmap_next_reverse[module_id_next]
|
|
# Lookup may fail if this is a newly added module.
|
|
# Don't attempt to setup `submodules_add` though as it's possible
|
|
# the module name persists while the underlying `repo_id` changes.
|
|
module_id_prev = repos_idmap_prev.get(repo_id)
|
|
if module_id_prev is None:
|
|
continue
|
|
|
|
# Detect rename.
|
|
if module_id_next != module_id_prev:
|
|
submodules_rename_module.append((module_id_prev, module_id_next))
|
|
renamed_prev.add(module_id_prev)
|
|
renamed_next.add(module_id_next)
|
|
|
|
# Detect `dirpath` change.
|
|
if dirpath_next != repos_info_prev[module_id_prev]:
|
|
submodules_rename_dirpath.append((module_id_next, dirpath_next))
|
|
|
|
# Detect added modules.
|
|
for module_id, dirpath in repos_info_next.items():
|
|
if (module_id not in repos_info_prev) and (module_id not in renamed_next):
|
|
submodules_add.append((module_id, dirpath))
|
|
# Detect deleted modules.
|
|
for module_id, _dirpath in repos_info_prev.items():
|
|
if (module_id not in repos_info_next) and (module_id not in renamed_prev):
|
|
submodules_del.append(module_id)
|
|
|
|
# Apply changes to the `_ext_base_pkg_idname` named module so it matches extension data from the preferences.
|
|
module_handle = _ext_global.module_handle
|
|
for module_id in submodules_del:
|
|
module_handle.unregister_submodule(module_id)
|
|
for module_id, dirpath in submodules_add:
|
|
module_handle.register_submodule(module_id, dirpath)
|
|
for module_id_prev, module_id_next in submodules_rename_module:
|
|
module_handle.rename_submodule(module_id_prev, module_id_next)
|
|
for module_id, dirpath in submodules_rename_dirpath:
|
|
module_handle.rename_directory(module_id, dirpath)
|
|
|
|
_ext_global.idmap.clear()
|
|
|
|
# Force refreshing if directory paths change.
|
|
if submodules_del or submodules_add or submodules_rename_dirpath:
|
|
modules._is_first = True
|
|
|
|
|
|
def _initialize_extensions_repos_once():
|
|
from bpy_extras.extensions.junction_module import JunctionModuleHandle
|
|
module_handle = JunctionModuleHandle(_ext_base_pkg_idname)
|
|
module_handle.register_module()
|
|
_ext_global.module_handle = module_handle
|
|
|
|
# Setup repositories for the first time.
|
|
# Intentionally don't call `_initialize_extension_repos_pre` as this is the first time,
|
|
# the previous state is not useful to read.
|
|
_initialize_extension_repos_post()
|
|
|
|
# Internal handlers intended for Blender's own handling of repositories.
|
|
_bpy.app.handlers._extension_repos_update_pre.append(_initialize_extension_repos_pre)
|
|
_bpy.app.handlers._extension_repos_update_post.append(_initialize_extension_repos_post)
|