termux-api: Cleanup and improve consistency

[termux-packages] / packages / termux-api / termux-tts-engines

diff --git a/packages/termux-api/termux-tts-engines b/packages/termux-api/termux-tts-engines
index 263b703..9bdfd95 100755 (executable)
--- a/packages/termux-api/termux-tts-engines
+++ b/packages/termux-api/termux-tts-engines
@@ -1,3 +1,23 @@
-#!/system/bin/sh
+#!/bin/sh
+set -e -u
 
-termux-api SpeechReceiver --es engine LIST_AVAILABLE
+SCRIPTNAME=termux-tts-engines
+show_usage () {
+    echo "Usage: $SCRIPTNAME"
+    echo "Get information about the available text-to-speech (TTS) engines. The name of an engine may be given to the termux-tts-speak command using the -e option."
+    echo ""
+    exit 0
+}
+
+while getopts :h option
+do
+    case "$option" in
+       h) show_usage;;
+       ?) echo "$SCRIPTNAME: illegal option -$OPTARG"; exit 1;
+    esac
+done
+shift $(($OPTIND-1))
+
+if [ $# != 0 ]; then echo "$SCRIPTNAME: too many arguments"; exit 1; fi
+
+@TERMUX_API@ TextToSpeech --es engine LIST_AVAILABLE