static XmlDoc Load(string fileName, string cachePath, bool allowRedirect)
{
LoggingService.Debug("Loading XmlDoc for " + fileName);
XmlDoc doc;
string cacheName = null;
if (cachePath != null)
{
Directory.CreateDirectory(cachePath);
cacheName = cachePath + "/" + Path.GetFileNameWithoutExtension(fileName)
+ "." + fileName.GetHashCode().ToString("x") + ".dat";
if (File.Exists(cacheName))
{
doc = new XmlDoc();
if (doc.LoadFromBinary(cacheName, File.GetLastWriteTimeUtc(fileName)))
{
//LoggingService.Debug("XmlDoc: Load from cache successful");
return(doc);
}
else
{
doc.Dispose();
try {
File.Delete(cacheName);
} catch {}
}
}
}
try {
using (XmlTextReader xmlReader = new XmlTextReader(fileName)) {
xmlReader.MoveToContent();
if (allowRedirect && !string.IsNullOrEmpty(xmlReader.GetAttribute("redirect")))
{
string redirectionTarget = GetRedirectionTarget(xmlReader.GetAttribute("redirect"));
if (redirectionTarget != null)
{
LoggingService.Info("XmlDoc " + fileName + " is redirecting to " + redirectionTarget);
return(Load(redirectionTarget, cachePath, false));
}
else
{
LoggingService.Warn("XmlDoc " + fileName + " is redirecting to " + xmlReader.GetAttribute("redirect") + ", but that file was not found.");
return(new XmlDoc());
}
}
doc = Load(xmlReader);
}
} catch (XmlException ex) {
LoggingService.Warn("Error loading XmlDoc " + fileName, ex);
return(new XmlDoc());
}
if (cachePath != null && doc.xmlDescription.Count > cacheLength * 2)
{
LoggingService.Debug("XmlDoc: Creating cache for " + fileName);
DateTime date = File.GetLastWriteTimeUtc(fileName);
try {
doc.Save(cacheName, date);
} catch (Exception ex) {
LoggingService.Error("Cannot write to cache file " + cacheName, ex);
return(doc);
}
doc.Dispose();
doc = new XmlDoc();
doc.LoadFromBinary(cacheName, date);
}
return(doc);
}
public virtual void Dispose()
{
xmlDoc.Dispose();
isDisposed = true;
}