/**
* Checks if newer versions of cachewolf are available
*
* @return [0] = recommended version type, [1]...[4]: 0: no update available, 1: newer version
* available, 2: version doesn't exists, 3: error
* @throws IOException
*/
public static void checkForUpdates() throws IOException {
Properties curvers =
UrlFetcher.fetchPropertyList("http://www.cachewolf.org/currentversions.txt");
versionnumbers = new String[updateavailabe.length];
for (int i = updateavailabe.length - 1; i >= 1; i--) {
updateavailabe[i] =
checkVersion(curvers, "T" + (i - 1), i); // this also sets versionnumber[i]
}
updateavailabe[0] = Convert.toInt(curvers.getProperty("RecommendedType", "0"));
}
/**
* @param url
* @return: 1 = newer Version available, 0 = this is up to date, 3 = check failed
*/
private static int checkVersion(Properties curvers, String prefix, int t) {
try {
int curvmaj = Convert.toInt(curvers.getProperty(prefix + "VersionMajor", "0"));
int curvmin = Convert.toInt(curvers.getProperty(prefix + "VersionMinor", "0"));
String svnRString = curvers.getProperty(prefix + "SvnRevision", "0");
if (svnRString.startsWith("http")) {
String tmp;
Regex s;
int i = svnRString.indexOf(' ');
if (i > 0) {
tmp = UrlFetcher.fetchString(svnRString.substring(0, i));
s =
new Regex(
svnRString.substring(
i + 1,
svnRString
.length())); // flyingfish works 3/2008 with
// ("(?i)Revision[\\s]*[:=][\\s]*[\\\\r]*[\\\\n]*[\\s]*([0-9]*)");
} else {
versionnumbers[t] = "error: no RegEx";
return 3;
}
s.search(tmp);
if (!s.didMatch()) {
versionnumbers[t] = "error: RegEx didnot match";
return 3;
}
svnRString = s.stringMatched(1);
}
versionnumbers[t] = curvmaj + "." + curvmin + "." + svnRString;
if (curvmaj > VER_MAJOR) return 1;
if (curvmaj < VER_MAJOR) return 0;
if (curvmin > VER_MINOR) return 1;
if (curvmin < VER_MINOR) return 0;
if (Convert.toInt(svnRString) > SVN_REVISION) return 1;
return 0;
} catch (IOException e) {
versionnumbers[t] = "IO-error";
return 3;
}
}