moby/hack/make/validate-vendor

#!/bin/bash

source "${MAKEDIR}/.validate"

IFS=$'\n'
files=( $(validate_diff --diff-filter=ACMR --name-only -- 'hack/vendor.sh' 'hack/.vendor-helpers.sh' 'vendor/' || true) ) 
unset IFS

if [ ${#files[@]} -gt 0 ]; then
	# We run vendor.sh to and see if we have a diff afterwards
	./hack/vendor.sh >/dev/null
	# Let see if the working directory is clean
	diffs="$(git status --porcelain -- vendor 2>/dev/null)"
	if [ "$diffs" ]; then
		{
			echo 'The result of ./hack/vendor.sh differs'
			echo
			echo "$diffs"
			echo
			echo 'Please vendor your package with ./hack/vendor.sh.'
			echo
		} >&2
		false
	else
		echo 'Congratulations! All vendoring changes are done the right way.'
	fi
fi