cfr-decompiler を Homebrew でインストール

プロジェクトリンク

• ホームページ
• リポジトリ
• 上流ドキュメント
• パッケージマネージャページ

コマンドとエイリアス

• cfr-decompiler

プロジェクトの歴史

The official GitHub repository was created in May 2014 and points users to benf.org as the main CFR site. The README says CFR can decompile modern Java features, including Java 9, 12, and 14 features, and can make a reasonable attempt at JVM languages such as Kotlin, Scala, and Groovy.

The benf.org project page records a long release history, including 0.146 in July 2019, 0.147 in October 2019, 0.150 in May 2020, 0.151 in February 2021, and 0.152 in December 2021. The README notes that since 0.145, binaries have also been published on GitHub releases.

採用の歴史

CFR's adoption comes from the Java reverse-engineering and debugging niche: developers use it when they need readable Java-like output from class files or jars, especially for newer language features that older decompilers may not handle cleanly.

Official distribution includes the benf.org jar downloads, GitHub release artifacts, and Maven Central. The Homebrew package wraps that Java tool in a package-manager-friendly executable for macOS users.

使われ方

The documented use is to run the versioned jar against class names or class files, or pass an entire jar and an `--outputdir` when emitting files. The README also documents `--help` for arguments.

CFR supports an options file for decompilation tests, but the official user docs do not document a persistent application config path or credential file for normal CLI use, so both locations are null.

パッケージ好きにとっての重要性

CFR matters to package people because decompilers are operational tools as much as developer tools: they are installed when source is missing, artifacts are suspicious, or bytecode behavior needs inspection.

It is also a classic example of a small Java jar that package managers wrap into a named executable. The package value is not dependency complexity; it is putting a known decompiler on PATH.

タイムライン

• 2014: The leibnitz27/cfr public repository is created on GitHub.
• 2019: CFR 0.146 and 0.147 add support and fixes for Java and Kotlin bytecode patterns.
• 2021: CFR 0.152 is published on benf.org with support and fixes for newer Java features including sealed classes.
• 2026: The official site notes renewed tinkering and points users to the GitHub repository for a modern version.

Related projects

• The Java compiler and JVM class-file format are the direct targets CFR decompiles.
• Kotlin, Scala, and Groovy are named in the README as JVM languages whose class files CFR may attempt to turn back into Java.
• Maven Central is an official distribution channel for CFR artifacts.

ソース

• https://api.github.com/repos/leibnitz27/cfr
• https://github.com/leibnitz27/cfr
• https://www.benf.org/other/cfr/
• https://github.com/leibnitz27/cfr#readme
• https://www.benf.org/other/cfr
• https://formulae.brew.sh/api/formula/cfr-decompiler.json