blenderのバックアップを自動整理するアドオン作りました！

どんなアドオンか？

blenderをやっていると、.blend1, .blend2っていうような拡張子のバックアップファイルを作成してくれます。ありがたいのですが、作業ディレクトリにどんどん作られちゃうので、煩雑になっちゃうんですよね。。。

そこで、これらのバックアップファイルをサブディレクトリにまとめて放り込んでくれるアドオンを作成しました〜。

こちらを参考に作成しました。
こちらだと、macOSでは動かないのですよね（path表記が異なるため）。
※Windowsの方はこちらを参考にしてください。

使用法

GitHubにまとめています。
他のblenderのアドオンと同じ方法でインストールできます！

注意

アドオン作成はおろか、blenderスクリプトも初挑戦です。
なので不備があるかもです。。

動作検証は以下でのみ行いました。

• Apple M1 Pro, macOS Ventura 13.2.1
• blender 3.4.1

ソースコード

# https://blender.stackexchange.com/questions/6940/config-blender-to-save-backup-files-in-subfolder
bl_info = {
    "version": (1, 3),
    "blender": (3, 4),
    "name": "Move Backup Save Files To A Sub Directory",
    "author": "Jonathan Stroem, Paul Mohr, Kazuma Hashimoto",
    "description": """Move the backup save files to a sub-directory instead of the Blender-file's current directory. A new folder called "backup.blend" will be created and all save-files will be moved there instead of the default folder.""" ,
    "category": "System",
    "location": """The backup folder will be named "backup.blend". Under 'File > User Preferences > File > Save Versions', you can change how many backups that'll be used.""",
    }

#IMPORTS
import bpy, os
import shutil
from bpy.app.handlers import persistent

import time
from stat import *


@persistent
def move_handler(dummy):

    #fullpath = Full path to the data file.
    #directory = Directory the data file is in.
    #name = Name of file, without extension.
    #extension = Extension of files.
    #backup_amount = Max amount of backups to store.
    #backup_directory = The name of the backup directory. (Where the files should be moved.) So change this if you want to change where the backups are saved.

    file = {"fullpath":bpy.data.filepath, \
            "directory":os.path.dirname(bpy.data.filepath), \
            "name":bpy.path.display_name_from_filepath(bpy.data.filepath), \
            "extension":".blend", \
            "backup_amount":bpy.context.preferences.filepaths.save_version, \
            "backup_directory":"backup.blend" \
            }

    #Create backup directory if it doesn't exist.
    if file["backup_directory"] not in os.listdir(file["directory"]):
        os.chdir(file["directory"])
        os.mkdir(file["backup_directory"])

    #Get current save files from the backup directory.
    current_dir_blend_files_list = []
    backup_dir = file["directory"] + "/" + file["backup_directory"]
    backup_blend_file_no = range(1, int(file["backup_amount"]) + 1)

    print([f for f in os.listdir(backup_dir) for c in backup_blend_file_no if f == file["name"] + file["extension"] + str(c) if os.path.isfile(os.path.join(backup_dir, f))])
    for f in [f for f in os.listdir(backup_dir) for c in backup_blend_file_no if f == file["name"] + file["extension"] + str(c) if os.path.isfile(os.path.join(backup_dir, f))]:
        current_dir_blend_files_list.append(f)

    #All this is moving the correct file.
    if len(current_dir_blend_files_list) < 1 : #If no files, then no need to check.
        if os.path.isfile(file["fullpath"] + "1") :
            shutil.move(file["fullpath"] + "1", file["directory"] + "/" + file["backup_directory"] + "/" + file["name"] + ".blend1")
    else : #If the max backup amount has been reached, then check for the oldest file and overwrite that one.
        if file["backup_amount"] <= len(current_dir_blend_files_list) :
            replaceFile = {"modified_date":None, \
                           "fullname":""}
            for f in current_dir_blend_files_list :
                stats = os.stat(file["directory"] + "/" + file["backup_directory"] + "/" + f) #Get attributes from a file.
                if replaceFile["fullname"] == "" : #This will happen only the first time.
                    replaceFile["fullname"] = f
                    replaceFile["modified_date"] = time.asctime(time.localtime(stats[ST_MTIME]))
                else : # Is the previous file older or newer? If it's older, then you'd want to overwrite that one instead. Go through all backup-files.
                    temp_modified = time.asctime(time.localtime(stats[ST_MTIME]))
                    if replaceFile["modified_date"] > temp_modified :
                        replaceFile["fullname"] = f
                        replaceFile["modified_date"] = temp_modified

            #When the loop is finished, the oldest file has been found, and will be overwritten.
            shutil.move(file["fullpath"] + "1", file["directory"] + "/" + file["backup_directory"] + "/" + replaceFile["fullname"])
        else : #If the max backup amount hasn't been reached, and the folder isn't empty.
            #Then check for the next number, and then just move the file over with the correct number.
            replaceFile = "" #Location.
            for f in current_dir_blend_files_list :
                for c in range(1, int(file["backup_amount"]) + 1) :
                    if not os.path.isfile(file["directory"] + "/" + file["backup_directory"] + "/" + file["name"] + file["extension"] + str(c)) :
                        shutil.move(file["fullpath"] + "1", file["directory"] + "/" + file["backup_directory"] + "/" + file["name"] + file["extension"] + str(c))
                        replaceFile = f
                        break
                if replaceFile != "" : #File to replace has been found, break out.
                    break


#When enabling the addon.
def register():
    bpy.app.handlers.save_post.append(move_handler)

#When disabling the addon.
def unregister():
    bpy.app.handlers.save_post.remove(move_handler)

#So that Blender recognize it as an addon.
if __name__ == "__main__":
    register()