#!/bin/sh

exec 2>&1

tmp_f=
if [ $# -eq 0 ]; then
	tmp_f="${TMPDIR:-/tmp}/colorize.$$"

	trap "rm -f '$tmp_f'" INT TERM

	cat > "$tmp_f"
	set -- "$tmp_f"
fi

if [ -t 1 ]; then
	if env | grep -q '^PAGER=$'; then
		PAGER=cat
	elif [ -z "$PAGER" ]; then
		PAGER="less -R"
	fi
else
	PAGER=cat
fi

for f; do
	l=
	eval mime=$(file -i -L - < "$f" | cut -d' ' -f2-)
	case "$mime" in
	application/xml) l=xml ;;
	text/x-shellscript) l=sh ;;
	text/x-diff) l=diff ;;
	text/x-c) l=c ;;
	text/plain)
		case "$(file - < "$f" | cut -d' ' -f2-)" in
		a\ */python\ script)
			l=python
			;;
		*)
			case "$f" in
			*.sh) l=sh ;;
			*.ini) l=ini ;;
			*.c|*.h|*.cc|*.hh) l=c ;;
			*.go) l=go ;;
			*) l=text ;;
			esac
			;;
		esac
	esac

	pygmentize ${l:+-l $l} "$f"
done | $PAGER

if [ -n "$tmp_f" ]; then
	rm -f "$tmp_f"
fi