~/.local/bin/email: Add working script!

I'm on a streak!

1 files changed, 74 insertions, 0 deletions

diff --git a/.local/bin/email b/.local/bin/email
new file mode 100755
index 00000000..0a1fd159
--- /dev/null
+++ b/.local/bin/email
@@ -0,0 +1,74 @@
+#!/bin/sh
+set -eu
+
+usage() {
+	cat <<-'EOF'
+		Usage:
+		  mail -s SUBJECT ADDRESS... < BODY
+		  mail -h
+	EOF
+}
+
+help() {
+	cat <<-'EOF'
+
+		Options:
+		  -s SUBJECT    the email subject
+		  -h, --help    show this message
+
+		ADDRESS         the email addresses to send the email to
+		BODY            the text to be sent as the body
+	EOF
+}
+
+for flag in "$@"; do
+	case "$flag" in
+		--)
+			break
+			;;
+		--help)
+			usage
+			help
+			exit
+			;;
+		*)
+			;;
+	esac
+done
+
+while getopts 's:h' flag; do
+	case "$flag" in
+		s)
+			SUBJECT="$OPTARG"
+			;;
+		h)
+			usage
+			help
+			exit
+			;;
+		*)
+			usage >&2
+			exit 2
+			;;
+	esac
+done
+shift $((OPTIND - 1))
+
+assert_arg() {
+	if [ -z "$1" ]; then
+		{
+			printf 'Missing %s.\n' "$2"
+			printf '\n'
+			usage
+		} >&2
+		exit 2
+	fi
+}
+
+assert_arg "${SUBJECT:-}" '-s SUBJECT'
+assert_arg "${1:-}"       'ADDRESS'
+
+printf 'Subject: %s\n\n%s' \
+	"$(echo "$SUBJECT" | tr -d '\n')" \
+	"$(cat)" |
+		msmtpq -a euandreh "$@"