Initial work on modem functionality

Including, checking for incoming calls, missed calls, sms and the start
of a dialer using rofi

bin/.bin/modem/common

@@ -0,0 +1,54 @@
+#!/usr/bin/env bash
+
+CALL_DIR="${XDG_DATA_HOME:-$HOME/.local/share}/Calls/"
+SMS_DIR="${XDG_DATA_HOME:-$HOME/.local/share}/SMS/"
+
+die(){
+	echo "$@" > /dev/stderr
+	rm "$FILE"
+	exit 1
+}
+
+trimWhitespace(){
+	sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//'
+}
+
+deleteEmptyLines(){
+	sed '/^$/ d'
+}
+
+# Iterate over options breaking -ab into -a -b when needed and --foo=bar into
+# --foo bar
+optstring=h
+unset options
+while (($#)); do
+	case $1 in
+		# If option is of type -ab
+		-[!-]?*)
+		# Loop over each character starting with the second
+		for ((i=1; i < ${#1}; i++)); do
+			c=${1:i:1}
+
+			# Add current char to options
+			options+=("-$c")
+
+			# If option takes a required argument, and it's not the last char make
+			# the rest of the string its argument
+			if [[ $optstring = *"$c:"* && ${1:i+1} ]]; then
+				options+=("${1:i+1}")
+				break
+			fi
+		done
+		;;
+
+		# If option is of type --foo=bar
+		--?*=*) options+=("${1%%=*}" "${1#*=}") ;;
+		# add --endopts for --
+		--) options+=(--endopts) ;;
+		# Otherwise, nothing special
+		*) options+=("$1") ;;
+	esac
+	shift
+done
+set -- "${options[@]}"
+unset options