termux-api: Cleanup and improve consistency

[termux-packages] / packages / termux-api / termux-camera-info

diff --git a/packages/termux-api/termux-camera-info b/packages/termux-api/termux-camera-info
index ec6bda1..79ec66e 100755 (executable)
--- a/packages/termux-api/termux-camera-info
+++ b/packages/termux-api/termux-camera-info
@@ -1,3 +1,23 @@
 #!/bin/sh
+set -e -u
+
+SCRIPTNAME=termux-camera-info
+show_usage () {
+    echo "Usage: $SCRIPTNAME"
+    echo "Get information about device camera(s)."
+    echo ""
+    exit 0
+}
+
+while getopts :h option
+do
+    case "$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@ CameraInfo