private void encodeParams(Hashtable params, Writer writer) throws IOException {
Enumeration en = params.keys();
for (int i = 0; en.hasMoreElements(); i++) {
if (i > 0) writer.write('&');
String key = (String) en.nextElement();
String value = (String) params.get(key);
writer.write(key);
writer.write('=');
writer.write((urlEncode(value.getBytes(this.encoding))));
}
}
public void receive() throws Exception {
Object root =
this.request("http://twitter.com/statuses/friends_timeline.json", false, null, true, true);
if (!(root instanceof Vector)) throw new Exception("Timeline is not an array");
Hashtable names = new Hashtable();
Enumeration en = ((Vector) root).elements();
while (en.hasMoreElements()) {
Object status = en.nextElement();
if (!(status instanceof Hashtable)) throw new Exception("Timeline status is not an object");
Hashtable statusht = (Hashtable) status;
Object text = statusht.get("text");
String textstr = (String) text;
if (!textstr.startsWith(MESSAGE_PREFIX)) continue;
textstr = textstr.substring(MESSAGE_PREFIX.length());
if (!(text instanceof String)) throw new Exception("Status text is not a string");
Object user = statusht.get("user");
if (!(user instanceof Hashtable)) throw new Exception("Status user is not an object");
Object name = ((Hashtable) user).get("name");
if (!(name instanceof String)) throw new Exception("Status user name is not a string");
String namestr = (String) name;
if (names.containsKey(namestr)) continue;
names.put(namestr, Boolean.TRUE);
String where = strip(textstr, '|', 0);
String time = strip(textstr, '|', 1);
String latlon = strip(textstr, '|', 2);
if ((where == null) || (time == null) || (latlon == null)) continue;
int colon = latlon.indexOf(':');
if (colon < 0) continue;
double lat, lon;
try {
lat = Double.parseDouble(latlon.substring(0, colon));
lon = Double.parseDouble(latlon.substring(colon + 1));
} catch (Exception e) {
continue;
}
this.main.updateSignPosition(namestr, lat, lon, where, time);
}
}
public void send(String message) throws Exception {
Hashtable params = new Hashtable();
params.put("status", MESSAGE_PREFIX + message);
this.request("http://twitter.com/statuses/update.json", true, params, true, false);
}