Create blend_backup_addon.py

Author: RimuruDev

blend_backup_addon.py

@@ -0,0 +1,85 @@
+bl_info = {
+    "name": "Save .blend Backup",
+    "author": "RimuruDev",
+    "version": (1, 2),
+    "blender": (4, 4, 0),
+    "location": "File > Save Backup",
+    "description": "Creates *_backup.blend next to current file and disables .blend1",
+    "category": "System",
+}
+
+import bpy, os, shutil
+from bpy.app.handlers import persistent
+
+@persistent
+def save_post_handler(_):
+    path = bpy.data.filepath
+    if not path:
+        return
+    d, n = os.path.dirname(path), os.path.splitext(os.path.basename(path))[0]
+    shutil.copy2(path, os.path.join(d, f"{n}_backup.blend"))
+
+def manual_backup():
+    path = bpy.data.filepath
+    if not path:
+        bpy.ops.wm.save_mainfile('INVOKE_DEFAULT')
+        return
+    d, n = os.path.dirname(path), os.path.splitext(os.path.basename(path))[0]
+    shutil.copy2(path, os.path.join(d, f"{n}_backup.blend"))
+
+class OT_SaveBackup(bpy.types.Operator):
+    bl_idname = "wm.save_blend_backup"
+    bl_label = "Save Backup (.blend)"
+    bl_description = "Copy current .blend to *_backup.blend"
+
+    def execute(self, _):
+        manual_backup()
+        return {'FINISHED'}
+
+class OT_SaveAndBackup(bpy.types.Operator):
+    bl_idname = "wm.save_and_backup"
+    bl_label = "Save and Backup (.blend)"
+    bl_description = "Save file and make *_backup.blend"
+
+    def execute(self, _):
+        if not bpy.data.filepath:
+            bpy.ops.wm.save_mainfile('INVOKE_DEFAULT')
+            return {'CANCELLED'}
+        bpy.ops.wm.save_mainfile()
+        manual_backup()
+        return {'FINISHED'}
+
+def draw_menu(self, _):
+    self.layout.operator(OT_SaveBackup.bl_idname, icon='FILE_BACKUP')
+
+addon_keymaps = []
+
+def register():
+    bpy.utils.register_class(OT_SaveBackup)
+    bpy.utils.register_class(OT_SaveAndBackup)
+    bpy.types.TOPBAR_MT_file.append(draw_menu)
+    bpy.context.preferences.filepaths.save_version = 0
+    if save_post_handler not in bpy.app.handlers.save_post:
+        bpy.app.handlers.save_post.append(save_post_handler)
+
+    kc = bpy.context.window_manager.keyconfigs.addon
+    if kc:
+        km = kc.keymaps.new(name='Window', space_type='EMPTY')
+        addon_keymaps.extend([
+            (km, km.keymap_items.new("wm.save_blend_backup", type='B', value='PRESS', ctrl=True, alt=True)),
+            (km, km.keymap_items.new("wm.save_and_backup", type='S', value='PRESS', ctrl=True, shift=True)),
+            (km, km.keymap_items.new("wm.save_and_backup", type='S', value='PRESS', oskey=True)),
+        ])
+
+def unregister():
+    bpy.types.TOPBAR_MT_file.remove(draw_menu)
+    bpy.utils.unregister_class(OT_SaveBackup)
+    bpy.utils.unregister_class(OT_SaveAndBackup)
+    if save_post_handler in bpy.app.handlers.save_post:
+        bpy.app.handlers.save_post.remove(save_post_handler)
+    for km, kmi in addon_keymaps:
+        km.keymap_items.remove(kmi)
+    addon_keymaps.clear()
+
+if __name__ == "__main__":
+    register()