pre-commit

#!/usr/bin/env bash

######################
# ---- SETTINGS ---- #
######################

# standard path if you are using virtualenvwrapper;
# replace VENV_PATH appropriately if not
PROJECT_NAME=""
VENV_PATH="${HOME}/.virtualenvs/${PROJECT_NAME}"

# run these hooks in this order
hook_names=(
    'isort'
    'whitespace'
    'forbidden'
    'todo'
    'flake8'
    'black'
)


#### END SETTINGS ####

# check if commit just edits commit message,
# i.e. is a "REWORD", and if so, skip checks
if git diff --staged --quiet ; then
    exit 0
fi

# if not inside virtual env, this will ensure
# it activates, so hooks will run correctly,
# e.g. isort hook needs to run inside the
# virtual env so it can properly identify
# 3rd party packages
if [ -z "$VIRTUAL_ENV" ]; then
    source "${VENV_PATH}/bin/activate"
fi

exit_codes=()

# run each hook, storing the exit status, so
# we identify all issues
for hook_name in "${hook_names[@]}"; do
    hook=".git/hooks/pre-commit-${hook_name}"
    if [ -x "$hook" ]; then
        "./$hook"
        exit_codes+=($?)
    else
        echo "$hook is not executable"
        exit_codes+=(1)
        continue
    fi
done

for status in "${exit_codes[@]}"; do
  [ "$status" -eq 0 ] || exit "$status"
done

exit 0