From 9d483f81a9022a007350e7f1bd4b7da90965748f Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Wed, 12 Nov 2014 15:56:43 -0800
Subject: [PATCH] redshift: clean up a bit

---
 .bin/redshift-check | 90 ++++++++++++++++++++++++++++-----------------
 1 file changed, 57 insertions(+), 33 deletions(-)

diff --git a/.bin/redshift-check b/.bin/redshift-check
index c994ad0..4cf84a3 100755
--- a/.bin/redshift-check
+++ b/.bin/redshift-check
@@ -1,34 +1,58 @@
 #!/bin/bash
-cd
-export DISPLAY=:0
-
-case $1 in
---reset) exec redshift -x ;;
-esac
-
-h=$(date +%H)
-
-declare -A temps
-temps=(
-	[20]=5000
-	[21]=4500
-	[22]=4000
-	[23]=3500
-	[00]=3000
-	[01]=3000
-	[02]=3000
-	[03]=3000
-	[04]=3000
-	[05]=3000
-	[06]=3500
-	[07]=4000
-	[08]=4500
-	[09]=5000
-)
-
-t=${temps[${h}]}
-if [[ -z ${t} ]]; then
-	exec redshift -x
-else
-	exec redshift -O ${t}k
-fi
+
+usage() {
+	cat <<-EOF
+	Usage: ${0##*/} [options]
+
+	Options:
+	  --reset    reset display to no redshift
+	EOF
+
+	if [[ $# -eq 0 ]] ; then
+		exit 0
+	else
+		printf '\nERROR: %s\n' "$*" >&2
+		exit 1
+	fi
+}
+
+main() {
+	cd
+	export DISPLAY=:0
+
+	while [[ $# -gt 0 ]] ; do
+		case $1 in
+		--reset) exec redshift -x ;;
+		-h|--help) usage ;;
+		*) usage "Unknown option: $1" ;;
+		esac
+	done
+
+	h=$(date +%H)
+
+	declare -A temps
+	temps=(
+		[20]=5000
+		[21]=4500
+		[22]=4000
+		[23]=3500
+		[00]=3000
+		[01]=3000
+		[02]=3000
+		[03]=3000
+		[04]=3000
+		[05]=3000
+		[06]=3500
+		[07]=4000
+		[08]=4500
+		[09]=5000
+	)
+
+	t=${temps[${h}]}
+	if [[ -z ${t} ]]; then
+		exec redshift -x
+	else
+		exec redshift -O ${t}k
+	fi
+}
+main "$@"
-- 
2.39.2