Meta String Editor

A simple editor for Unity IL2CPP global-metadata.dat files, allowing you to inspect and modify string literals.

Available as both a Go library/CLI and Python binding package, making it easy to cross platform and integrate with Python scripts.

Quick Start

Use CLI

You can download the pre-built executable in GitHub Release, or use the wrapped library distributed along with Python package.

pip install metastringedit

Usage

> ./metastringedit
Usage:
  metastringedit <file_path> [flags]

Flags:
  -d, --dump               Dump all strings to JSON
  -e, --edit stringArray   Edit strings (format: nth=value, can input multiple pairs)
  -h, --help               help for metastringedit
  -i, --info               Show metadata file information (default)
  -l, --list string        List strings:
                           - [page:num] for pagination, e.g. 0:20
                           - [nth] for single string, e.g. 3
                           - [start-end] for range, e.g. 1-20
  -o, --output string      Output file path
  -r, --regex string       Search for strings using regex
  -s, --search string      Search for strings (case-insensitive substring)

As Library

See examples.

Development

Requirements:

• Python 3.9+
• Go 1.17+

Building

Go CLI

cd cli && go build .

Python wheel

uv build

Running Tests

Go

go test -v

Python

# Build shared library first. Here is Linux example
cd binding && go build -o metastringedit.so -buildmode=c-shared . && cd ..

uv sync --extra dev --no-install-project
pytest

Acknowledgments

https://github.com/Perfare/Il2CppDumper
https://github.com/JeremieCHN/MetaDataStringEditor
GitHub Copilot

License

MIT