public CustomRedirect(CustomRedirect redirect)
{
_oldUrl = redirect._oldUrl;
_newUrl = redirect._newUrl;
WildCardSkipAppend = redirect.WildCardSkipAppend;
SiteId = redirect.SiteId;
}
// TODO: If desired, change parameters to Find method to search based on a property of CustomRedirect.
public CustomRedirect Find(Uri urlNotFound)
{
// Handle absolute addresses first
string url = urlNotFound.AbsoluteUri;
int siteId = DataHandler.GetSiteIdFromUrl(urlNotFound.Host);
if (siteId == -1)
{
return(null);
}
//TODO: Since we shouldn't use the host in our redirects, we should be able to remove this step
CustomRedirect foundRedirect = FindInternal(url, siteId);
// Common case
if (foundRedirect == null)
{
url = urlNotFound.PathAndQuery;
foundRedirect = FindInternal(url, siteId);
}
// Handle legacy databases with encoded values
if (foundRedirect == null)
{
url = HttpUtility.HtmlEncode(url);
foundRedirect = FindInternal(url, siteId);
}
return(foundRedirect);
}
public int IndexOf(CustomRedirect customRedirect)
{
for (int i = 0; i < List.Count; i++)
{
if (this[i] == customRedirect) // Found it
{
return(i);
}
}
return(-1);
}
/// <summary>
/// Parses the xml file and reads all redirects.
/// </summary>
/// <returns>A collection of CustomRedirect objects</returns>
public CustomRedirectCollection Load(int siteId)
{
// ReSharper disable InconsistentNaming
const string URLPATH = "/redirects/urls/url";
const string NEWURL = "new";
const string OLDURL = "old";
const string SKIPWILDCARD = "onWildCardMatchSkipAppend";
// ReSharper restore InconsistentNaming
CustomRedirectCollection redirects = new CustomRedirectCollection();
// Parse all url nodes
XmlNodeList nodes = _customRedirectsXmlFile.SelectNodes(URLPATH);
if (nodes != null)
{
foreach (XmlNode node in nodes)
{
// Each url new url can have several old values
// we need to create a redirect object for each pair
XmlNode newNode = node.SelectSingleNode(NEWURL);
XmlNodeList oldNodes = node.SelectNodes(OLDURL);
if (oldNodes != null)
{
foreach (XmlNode oldNode in oldNodes)
{
bool skipWildCardAppend = false;
if (oldNode.Attributes != null)
{
XmlAttribute skipWildCardAttr = oldNode.Attributes[SKIPWILDCARD];
if (skipWildCardAttr != null)
{
// If value parsing fails, it will be false by default. We do
// not really care to check if it fails, as we cannot do anything
// about it (throwing an exception is not a good idea here)
bool.TryParse(skipWildCardAttr.Value, out skipWildCardAppend);
}
}
// Create new custom redirect nodes
if (newNode != null)
{
CustomRedirect redirect = new CustomRedirect(oldNode.InnerText, newNode.InnerText, skipWildCardAppend, siteId);
redirects.Add(redirect);
}
}
}
}
}
return(redirects);
}
private CustomRedirect FindInternal(string url, int siteId)
{
object foundRedirect = _quickLookupTable[url];
if (foundRedirect != null)
{
return(foundRedirect as CustomRedirect);
}
// No exact match could be done, so we'll check if the 404 url
// starts with one of the urls we're matching against. This
// will be kind of a wild card match (even though we only check
// for the start of the url
// Example: http://www.mysite.com/news/mynews.html is not found
// We have defined an "<old>/news</old>" entry in the config
// file. We will get a match on the /news part of /news/myne...
// Depending on the skip wild card append setting, we will either
// redirect using the <new> url as is, or we'll append the 404
// url to the <new> url.
IDictionaryEnumerator enumerator = _quickLookupTable.GetEnumerator();
while (enumerator.MoveNext())
{
// See if this "old" url (the one that cannot be found) starts with one
if (url.StartsWith(enumerator.Key.ToString(), StringComparison.InvariantCultureIgnoreCase))
{
foundRedirect = _quickLookupTable[enumerator.Key];
CustomRedirect cr = foundRedirect as CustomRedirect;
if (cr != null && cr.State == (int)DataStoreHandler.State.Ignored)
{
return(null);
}
if (cr != null && cr.WildCardSkipAppend)
{
// We'll redirect without appending the 404 url
return(cr);
}
// We need to append the 404 to the end of the
// new one. Make a copy of the redir object as we
// are changing it.
CustomRedirect redirCopy = new CustomRedirect(cr);
redirCopy.NewUrl = redirCopy.NewUrl + url.Substring(enumerator.Key.ToString().Length);
return(redirCopy);
}
}
return(null);
}
public void Remove(CustomRedirect customRedirect)
{
_quickLookupTable.Remove(customRedirect);
List.Remove(customRedirect);
}
public void Insert(int index, CustomRedirect customRedirect)
{
_quickLookupTable.Add(customRedirect, customRedirect);
List.Insert(index, customRedirect);
}
// public methods...
#region Add
public int Add(CustomRedirect customRedirect)
{
_quickLookupTable.Add(customRedirect.OldUrl, customRedirect);
return(List.Add(customRedirect));
}