check-metadata.sh: new maintenance script

maintenance/check-metadata.sh

@@ -0,0 +1,54 @@
+#!/bin/bash
+
+set -e
+set -u
+
+error () {
+	>&2 echo "ERROR: " "$@"
+}
+
+has_metadata_entry () {
+	# .user.jss files have slashes and spaces at the start of the line,
+	# but .user.css files do not
+	grep -q -E "^[/ ]*@${1}" "${2}"
+}
+
+has_version () {
+	has_metadata_entry 'version  *[0-9.-]+' "$1"
+}
+
+has_license () {
+	has_metadata_entry 'license  *' "$1"
+}
+
+has_namespace () {
+	# some have https://github.com/rybak/atlassian-tweaks while others
+	# have https://github.com/rybak, without the repository name
+	# both are fine
+	has_metadata_entry 'namespace  *https://github.com/rybak' "$1"
+}
+
+has_homepageURL () {
+	has_metadata_entry 'homepageURL  *https://github.com/rybak/atlassian-tweaks' "$1"
+}
+
+check () {
+	if ! $1 "$2"
+	then
+		error "$3"
+		res=false
+	fi
+}
+
+GITHUB_URL=https://github.com/rybak/atlassian-tweaks
+
+res=true
+for f in *.user.js *.user.css
+do
+	check has_version "$f" "File '$f' is missing @version"
+	check has_license "$f" "File '$f' is missing @license"
+	check has_namespace "$f" "File '$f' is missing @namespace $GITHUB_URL"
+	check has_homepageURL "$f" "File '$f' is missing @homepageURL $GITHUB_URL"
+done
+
+$res