altoslib: Add AltosLaunchSite bits

This asynchronously fetches the list of available launch sites from
the standard location and notifies the caller when finished.

Signed-off-by: Keith Packard <keithp@keithp.com>

diff --git a/altoslib/AltosLaunchSite.java b/altoslib/AltosLaunchSite.java
new file mode 100644 (file)
index 0000000..70a4bb5
--- /dev/null
+++ b/altoslib/AltosLaunchSite.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright © 2015 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package org.altusmetrum.altoslib_7;
+
+import java.io.*;
+import java.lang.*;
+import java.util.*;
+import java.text.*;
+import java.util.concurrent.*;
+
+public class AltosLaunchSite {
+       public String   name;
+       public double   latitude;
+       public double   longitude;
+
+       public String toString() {
+               return name;
+       }
+
+       public AltosLaunchSite(String in_name, double in_latitude, double in_longitude) {
+               name = in_name;
+               latitude = in_latitude;
+               longitude = in_longitude;
+       }
+
+       public AltosLaunchSite(String line) throws ParseException {
+               String[]        elements = line.split(":");
+
+               if (elements.length < 3)
+                       throw new ParseException(String.format("Invalid site line %s", line), 0);
+
+               name = elements[0];
+
+               try {
+                       latitude = AltosParse.parse_double_net(elements[1]);
+                       longitude = AltosParse.parse_double_net(elements[2]);
+               } catch (ParseException pe) {
+                       throw new ParseException(String.format("Invalid site line %s", line), 0);
+               }
+       }
+}
+

diff --git a/altoslib/AltosLaunchSiteListener.java b/altoslib/AltosLaunchSiteListener.java
new file mode 100644 (file)
index 0000000..2101590
--- /dev/null
+++ b/altoslib/AltosLaunchSiteListener.java
@@ -0,0 +1,26 @@
+/*
+ * Copyright © 2015 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+package org.altusmetrum.altoslib_7;
+
+import java.io.*;
+import java.lang.*;
+import java.util.*;
+import java.util.concurrent.*;
+
+public interface AltosLaunchSiteListener {
+       public abstract void notify_launch_sites(List<AltosLaunchSite> sites);
+}

diff --git a/altoslib/AltosLaunchSites.java b/altoslib/AltosLaunchSites.java
new file mode 100644 (file)
index 0000000..0922bce
--- /dev/null
+++ b/altoslib/AltosLaunchSites.java
@@ -0,0 +1,73 @@
+/*
+ * Copyright © 2015 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package org.altusmetrum.altoslib_7;
+
+import java.io.*;
+import java.lang.*;
+import java.util.*;
+import java.util.concurrent.*;
+import java.net.*;
+import java.text.*;
+
+public class AltosLaunchSites extends Thread {
+       URL                             url;
+       LinkedList<AltosLaunchSite>     sites;
+       AltosLaunchSiteListener         listener;
+
+       void notify_complete() {
+               listener.notify_launch_sites(sites);
+       }
+
+       void add(AltosLaunchSite site) {
+               sites.add(site);
+       }
+
+       void add(String line) {
+               try {
+                       add(new AltosLaunchSite(line));
+               } catch (ParseException pe) {
+                       System.out.printf("parse exception %s\n", pe.toString());
+               }
+       }
+
+       public void run() {
+               try {
+                       url = new URL(AltosLib.launch_sites_url);
+                       URLConnection uc = url.openConnection();
+
+                       InputStreamReader in_stream = new InputStreamReader(uc.getInputStream(), AltosLib.unicode_set);
+                       BufferedReader in = new BufferedReader(in_stream);
+
+                       for (;;) {
+                               String line = in.readLine();
+                               if (line == null)
+                                       break;
+                               add(line);
+                       }
+               } catch (Exception e) {
+               } finally {
+                       notify_complete();
+               }
+       }
+
+       public AltosLaunchSites(AltosLaunchSiteListener listener) {
+               sites = new LinkedList<AltosLaunchSite>();
+               this.listener = listener;
+               start();
+       }
+}

diff --git a/altoslib/Makefile.am b/altoslib/Makefile.am
index 481c974f834e7f0ee9d2ed0d56fa88178b1e3cf8..de13c1ec0853f2a4d8d798bf86f3f9a513c18a4b 100644 (file)
--- a/altoslib/Makefile.am
+++ b/altoslib/Makefile.am
@@ -151,6 +151,9 @@ altoslib_JAVA = \
        AltosRectangle.java \
        AltosFlightDisplay.java \
        AltosFontListener.java \
+       AltosLaunchSite.java \
+       AltosLaunchSiteListener.java \
+       AltosLaunchSites.java \
        AltosVersion.java
 
 JAR=altoslib_$(ALTOSLIB_VERSION).jar