private void checkForUpdate(String localVersion)
{
if (System.Diagnostics.Debugger.IsAttached && File.Exists(tzdbFilename))
{
return;
}
log.Debug("Checking for new timezone database...");
String nodatimeURL = "http://nodatime.org/tzdb/latest.txt";
String html = "";
try {
html = new System.Net.WebClient().DownloadString(nodatimeURL);
} catch (System.Exception ex) {
log.Error("Failed to get latest NodaTime db version.");
OGCSexception.Analyse(ex);
return;
}
if (string.IsNullOrEmpty(html))
{
log.Warn("Empty response from " + nodatimeURL);
}
else
{
html = html.TrimEnd('\r', '\n');
if (html.EndsWith(localVersion + ".nzd"))
{
log.Debug("Already have latest TZDB version.");
}
else
{
Regex rgx = new Regex(@"https*:.*/tzdb(.*)\.nzd$", RegexOptions.IgnoreCase);
MatchCollection matches = rgx.Matches(html);
if (matches.Count > 0)
{
String remoteVersion = matches[0].Result("$1");
if (string.Compare(localVersion, remoteVersion, System.StringComparison.InvariantCultureIgnoreCase) < 0)
{
log.Debug("There is a new version " + remoteVersion);
try {
new System.Net.WebClient().DownloadFile(html, tzdbFilename);
log.Debug("New version downloaded - disposing of reference to old db data.");
instance = null;
} catch (System.Exception ex) {
log.Error("Failed to download new database from " + html);
OGCSexception.Analyse(ex);
}
}
}
else
{
log.Warn("Regex to extract latest version is no longer working!");
}
}
}
}
