astyle

astyle

reformat C, C++, C#, Java and Objective-C source

curl -fsSL https://unflab.app/get | sh -s -- astyle

Installs to ~/.local/bin. Add --prefix /usr/local/bin to
put it somewhere else, or --uninstall to remove it.

Why it’s here

No dependency problem to solve — it’s here so it installs the same way as everything else.

Details

Built from that exact tarball, with its SHA-256 pinned in the
recipe. The binary links against nothing outside /usr/lib
and /System/, checked in CI before release.

Artistic Style: reformats C, C++, C#, Java and Objective-C source.

# In place, with a backup of each original as .orig
astyle --style=allman src/*.c

# To stdout, no files touched
astyle --style=kr < input.c

# No backups, recursive
astyle --style=google --suffix=none --recursive 'src/*.cpp'

Styles are named on the command line — allman, kr, stroustrup,
gnu, linux, google, mozilla, webkit, ratliff, horstmann,
pico, lisp and more — with no config file needed. Individual
switches (--indent=tab, --pad-oper, --break-blocks,
--align-pointer=name) layer on top, and a set of them can live in a
file passed with --options=.

man astyle has the full list, which is long.

It rewrites files in place by default, leaving .orig copies
beside them. --suffix=none drops the backups; --dry-run shows what
would change without writing.

Completions for bash, zsh and fish are installed. If your shell already
reads the standard completion directories they work straight away; zsh
needs fpath set before compinit runs.

Install

./install.sh                      # into ~/.local/bin
./install.sh --prefix /usr/local/bin
./install.sh --uninstall

About this build

There is no dependency story — Homebrew’s astyle has no runtime
dependencies either. This is packaged so it installs the same way as
everything else. The binary links libc++ and libSystem, both part
of macOS.

It’s also worth being straight about the overlap, because it’s real.
macOS already has two formatters. /usr/bin/indent is a BSD C
formatter, narrow enough not to matter much — it’s C only, and it
mangles a C++ class body. clang-format is the serious one: it ships
with the Command Line Tools, so it’s on any machine that has cc,
though not on PATH:

/Library/Developer/CommandLineTools/usr/bin/clang-format --style=GNU

It handles C, C++, Java and C#, and takes named styles without a config
file. If that suits you, you don’t need this.

The case for astyle is preference rather than capability: a different
set of brace styles, finer-grained control over padding and one-liners,
and twenty years of scripts and habits built around its flags. Worth
having if it’s the formatter you want; not something missing from the
machine without it.

Upstream

• Home: https://astyle.sourceforge.net/
• Version: 3.6.18
• Licence: MIT (see LICENSE)

Artistic Style is Jim Pattee, Tal Davidson and contributors’ work.
unflab only compiles and packages it.