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>

1 files changed, 73 insertions, 0 deletions

diff --git a/altoslib/AltosLaunchSites.java b/altoslib/AltosLaunchSites.java
new file mode 100644
index 00000000..0922bcea
--- /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();
+	}
+}