add a rudimentary --help for command line use

[fw/altos] / ao-tools / altosui / AltosUI.java

diff --git a/ao-tools/altosui/AltosUI.java b/ao-tools/altosui/AltosUI.java
index 93a5e0d83c735877a01207d73e8f39a8e765a6f0..94c4dd2aa4b10bb2ae6424268344f0c9ace981f6 100644 (file)
--- a/ao-tools/altosui/AltosUI.java
+++ b/ao-tools/altosui/AltosUI.java
@@ -353,7 +353,14 @@ public class AltosUI extends JFrame {
        public static void main(final String[] args) {
                int     process = 0;
                /* Handle batch-mode */
-        if (args.length == 3 && args[0].equals("--fetchmaps")) {
+        if (args.length == 1 && args[0].equals("--help")) {
+               System.out.printf("Usage: altosui [OPTION]... [FILE]...\n");
+               System.out.printf("  Options:\n");
+               System.out.printf("    --fetchmaps <lat> <lon>\tpre-fetch maps for site map view\n");
+               System.out.printf("    --replay <filename>\t\trelive the glory of past flights \n");
+               System.out.printf("    --csv\tgenerate comma separated output for spreadsheets, etc\n");
+               System.out.printf("    --kml\tgenerate KML output for use with Google Earth\n");
+        } else if (args.length == 3 && args[0].equals("--fetchmaps")) {
             double lat = Double.parseDouble(args[1]);
             double lon = Double.parseDouble(args[2]);
             AltosSiteMap.prefetchMaps(lat, lon, 5, 5);