A command line tools for extracting data from, and repacking data back to .aos archives.
The .aos file format is used by visual novel producers Princess Sugar, Sugar Pot and LiLiM | リリム with their in-house engine.
This tool supports specifically version 2 of the aos format which should cover any visual novel made after 2006.
| Extension | Support | Description |
|---|---|---|
| .aos | Full support | Archive file, can be extracted and repacked. |
| .scr | Full support | Script file, Can be decoded to Shift-JIS encoded text file and encoded back to scr file. The engine does not support any other encoding format. |
| .abm | Partial support | Compressed bitmap image/animated bitmap, Can only be decoded to a bitmap file(s). For animated bitmaps .json file is created alongside the animation that includes the frame data. |
| .msk | Partial support | Grayscale mask, Normal 8-bit bitmap file that is not encoded, only the extension is changed during decode. Used for scene transitions and similar effects. |
AosTools command <input file or folder> [options] <output folder>
| Command | Options | Description |
|---|---|---|
| help | Prints help message with all the available commands. | |
| extract | --nodecode | Extracts all files from an .aos archive file. |
| decode | Decodes a file or a directory of encoded scr/ABM files. | |
| repack | --noencode | Repacks all files in a directory to an .aos archive. |
| encode | Encodes a file or a directory of txt files. |
This project is published under MIT License.