barb

Hassle-free, cross-platform git hooks for python projects

Installation

pip install barb

Initializing a new project

barb init

Running this command both initializes the .barb directory as well as runs the barb install command.

Installing barb

To register the hooks under the .barb directory with git, run barb install

Creating a hook

Create a script under the .barb directory with the same name as the git hook you are attempting to create.

You can create two types of scripts to work as hooks:

• The standard shell script, which will be executed by the operating system's default cli.
  ex.

./.barb/pre-commit
---
#!/bin/sh
echo "Hello, World!"

• A python script. The script will enter at the hook() function. Not all hooks pass arguments, but those that provide them do so via the args parameter.

./.barb/pre-push.py
---
def hook(*args):
  print('Hello, World!')

Exceptions and False return values from this function will be considered hook failures.

Hooks can be organized in one of two ways. Top level files will be run on each os, without consideration:

.barb
├── pre-commit
└── post-rewrite.py

Alternatively, when organized in folders, different scripts can be set to run depending on the operating system:

.barb
└── post-rewrite
    ├── linux.py
    ├── darwin
    └── windows.ps1

.barbrc.toml

A configuration file is automatically created when the command barb init is run. The following are valid configurations

• os-lock
  • If enabled, git hooks will only attempt to execute on the specified operating system. Otherwise, they will be skipped.
  • ex. os-lock = windows
• [os.$OS$.$FILE_EXT$]
  • interpreter
    • The name (or path) of the interpreter to use for the file extension.
  • args
    • A list of arguments for the interpreter.
    • Note: the arguments are placed before the git hook path.

  • # Special Case: default interpreter for file ext with no interpreter specified
    [os.linux.default] 
    interpreter = 'bash'

  • # executes ps1 files as "powershell -ExecutionPolicy Unrestricted -File ./.barb/git-hook-name.ps1"
    [os.windows.ps1]
    interpreter = 'powershell'
    args = ['-ExecutionPolicy', 'Unrestricted', '-File']
    

TODO:

• line endings, barb sanitize to sanitize the hooks?