lint

#!/usr/bin/env bash

# Sane defaults.
set -euo pipefail

# Find scripts directory.
script="$0"
if test -L "$script"; then
	script="$(readlink -f "$0")"
fi
prefix="$(dirname "$script")"
script="$(basename "$script")"

# Print the manual.
help() {
	cat <<-EOF >&2
		About
		        Lint Lua and XML files recursively in the given directory.

		Usage
		        $script -h
		        $script [-x] <path>

		Flags
		        -h      Print this manual.
		        -x      Enable debug mode.
	EOF
}

# Parse and apply flags.
while getopts ":xh" option; do
	case "$option" in
		x)
			set -x
			;;
		h)
			help
			exit
			;;
		?)
			echo "$script: unknown flag '$OPTARG', try -h" >&2
			exit
			;;
	esac
done

# Drop flags by shifting arguments.
shift $((OPTIND - 1))

# Test required arguments.
if test -z "$*"; then
	echo "$script: missing required argument, see -h" >&2
	exit
fi

# Target directory.
target="$1"

# Validate target directory.
if ! test -d "$target"; then
    echo "$script: '$target' is not a directory" >&2
    exit 1
fi

# Lint Lua files.
find "$target" -name "*.lua" -exec luacheck {} +

# Lint XML files.
printf "\n"
find "$target" -name "*.xml" -exec xmllint --noout --schema "$prefix/../UI.xsd" {} +