compress blend files

compress_blend_files.bat

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+@echo off
+setlocal enabledelayedexpansion
+
+echo Starting Blender file compression...
+
+REM Create input and output directories if they don't exist
+if not exist "input" mkdir "input"
+if not exist "output" mkdir "output"
+
+REM Create a temporary Python script for compression
+set "TEMP_SCRIPT=compress_blend_temp.py"
+echo Creating Python script: !TEMP_SCRIPT!
+(
+echo import bpy
+echo import os
+echo import glob
+echo.
+echo # Enable compression globally
+echo bpy.context.preferences.filepaths.save_version = 0
+echo bpy.context.preferences.filepaths.use_file_compression = True
+echo.
+echo # Create input and output directories if they don't exist
+echo if not os.path.exists^("input"^):
+echo     os.makedirs^("input"^)
+echo if not os.path.exists^("output"^):
+echo     os.makedirs^("output"^)
+echo.
+echo # Get all .blend files in input directory
+echo blend_files = glob.glob^("input/*.blend"^)
+echo.
+echo print^("Found " + str^(len^(blend_files^)^) + " .blend files to compress"^)
+echo.
+echo for blend_file in blend_files:
+echo     try:
+echo         # Create output path in output folder
+echo         filename = os.path.basename^(blend_file^)
+echo         output_file = os.path.join^("output", filename^)
+echo         # Check if output file already exists
+echo         if os.path.exists^(output_file^):
+echo             print^("Skipping " + blend_file + " ^(already exists in output^)"^)
+echo             continue
+echo         print^("Processing: " + blend_file^)
+echo         # Load the blend file
+echo         bpy.ops.wm.open_mainfile^(filepath=blend_file^)
+echo         # Save with compression to output folder
+echo         bpy.ops.wm.save_mainfile^(filepath=output_file, compress=True^)
+echo         print^("Successfully compressed: " + blend_file + " -^> " + output_file^)
+echo     except Exception as e:
+echo         print^("Failed to compress " + blend_file + ": " + str^(e^)^)
+echo.
+echo print^("Compression complete!"^)
+echo bpy.ops.wm.quit_blender^(^)
+) > "!TEMP_SCRIPT!"
+
+REM Check if script was created successfully
+if exist "!TEMP_SCRIPT!" (
+    echo Script created successfully: !TEMP_SCRIPT!
+) else (
+    echo ERROR: Failed to create script file!
+    pause
+    exit /b 1
+)
+
+REM Run Blender once to process all files
+echo Processing all .blend files in a single Blender instance...
+echo Using script: !TEMP_SCRIPT!
+blender --background --factory-startup --python "!TEMP_SCRIPT!"
+
+REM Clean up temporary script
+echo Cleaning up temporary script...
+del "!TEMP_SCRIPT!" 2>nul
+
+echo.
+echo Done!
+pause