Support -b argument to override default bottokenfile

Support -c argument to override default chatidfile

telegram-send.sh

@@ -1,6 +1,8 @@
 #!/bin/bash
-TOKENFILE=${HOME}/.telegram/bottoken
-CHATFILE=${HOME}/.telegram/chatid
+DEFAULT_TOKENFILE=${HOME}/.telegram/bottoken
+DEFAULT_CHATFILE=${HOME}/.telegram/chatid
+TOKENFILE=${DEFAULT_TOKENFILE}
+CHATFILE=${DEFAULT_CHATFILE}
 
 function die() {
     echo "FATAL:  $*" >&2
@@ -8,16 +10,42 @@ function die() {
 }
 
 function usage() {
-    echo "usage:  $0 \"text to send\""
+    echo "usage:  $0 [OPTIONS] \"text to send\""
     echo
     echo "Instructs telegram bot to send the supplied message to a chat."
     echo
+    echo "OPTIONS"
+    echo "         -b  filename       Override default bot token file (${DEFAULT_TOKENFILE})"
+    echo "         -c  filename       Override default chat id token file (${DEFAULT_CHATFILE})"
+    echo
     echo "Needs these files to work:"
-    echo "File with telegram bot token: ${TOKENFILE}"
-    echo "File with telegram chat id:   ${CHATFILE}"
+    echo "   File with telegram bot token: ${DEFAULT_TOKENFILE}"
+    echo "   File with telegram chat id:   ${DEFAULT_CHATFILE}"
 }
 
-if [[ $1 == "-h" || $# -ne 1 ]]; then
+ARGS="b:c:h"
+while getopts "$ARGS" i; do
+	case "$i" in
+		b)
+                        TOKENFILE=$OPTARG
+			;;
+		c)
+                        CHATFILE=$OPTARG
+			;;
+		h)
+			usage;
+                        exit 1;
+			;;
+		*)
+			usage;
+                        exit 1;
+			;;
+	esac
+done
+shift $((OPTIND - 1))
+
+
+if [[ $# -ne 1 ]]; then
     usage
     exit 1
 fi