From f432246cdd3a1a042acdaa0f6696730b98991f41 Mon Sep 17 00:00:00 2001
From: sinanmohd <sinan@firemail.cc>
Date: Fri, 30 Jun 2023 12:15:42 +0530
Subject: vtoc: add usage and -h option

---
 bin/vtoc.sh | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/bin/vtoc.sh b/bin/vtoc.sh
index fc69122..599e6ac 100755
--- a/bin/vtoc.sh
+++ b/bin/vtoc.sh
@@ -1,5 +1,16 @@
 #!/bin/sh
 
+usage()
+{
+	cat <<- EOF
+	Usage: ${0##*/} [options] [ contacts.vcf ]
+	convert vcf file to csv file
+	Options:
+	  -h	show this help cruft
+
+	EOF
+}
+
 die()
 {
 	: "${1:?}"
@@ -23,9 +34,11 @@ no=
 vcf=
 nos=
 
-if [ -z "$1" ] ||
- [ "$(file --brief --dereference --mime-type "$1")" != "text/vcard" ]; then
-	die "no or invalid input"
+if [ -z "$1" ] || [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
+	usage
+	exit
+elif [ "$(file --brief --dereference --mime-type "$1")" != "text/vcard" ]; then
+	die "input is not a vcf file"
 else
 	vcf="$1"
 	shift
-- 
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