From b0f64583bf02f84cadcfad9b610d9c02ec6c4ec2 Mon Sep 17 00:00:00 2001
From: EuAndreh <eu@euandre.org>
Date: Sun, 24 Jan 2021 02:17:48 -0300
Subject: Support -h and --help flags

---
 remembering | 30 ++++++++++++++++++++++++++----
 1 file changed, 26 insertions(+), 4 deletions(-)

diff --git a/remembering b/remembering
index b31924e..b6432ec 100755
--- a/remembering
+++ b/remembering
@@ -2,16 +2,33 @@
 set -eu
 
 usage() {
-	printf 'Usage: %s: -p PROFILE -c "COMMAND"\n' "$0" >&2
+	printf 'Usage:	%s -p PROFILE -c "COMMAND"\n' "$0"
+}
+
+help() {
+	echo '
+Options:
+ -p      profile to be used for gathering and storing data
+ -c      command to be run, reading from STDIN, writing to STDOUT
+
+See manpages for more information.'
 }
 
 missing() {
 	printf 'Missing option: %s\n' "$1" >&2
 }
 
+for flag in $@; do
+	if [ "$flag" = '--help' ]; then
+		usage
+		help
+		exit 0
+	fi
+done
+
 COMMANDFLAG=
 PROFILEFLAG=
-while getopts 'c:p:' name; do
+while getopts 'hc:p:' name; do
 	case "$name" in
 		c)
 			COMMANDFLAG="$OPTARG"
@@ -19,6 +36,11 @@ while getopts 'c:p:' name; do
 		p)
 			PROFILEFLAG="$OPTARG"
 			;;
+		h)
+			usage
+			help
+			exit 0
+			;;
 		*)
 			echo "Ignoring unrecognized flag '$name'" >&2
 			;;
@@ -27,13 +49,13 @@ done
 
 if [ -z "$COMMANDFLAG" ]; then
 	missing '-c "COMMAND"'
-	usage
+	usage >&2
 	exit 2
 fi
 
 if [ -z "$PROFILEFLAG" ]; then
 	missing '-p PROFILE'
-	usage
+	usage >&2
 	exit 2
 fi
 
-- 
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