/// <summary>
/// Detects URLs in styles.
/// </summary>
/// <param name="baseUri">The base URI.</param>
/// <param name="attributeName">Name of the attribute.</param>
/// <param name="attributeValue">The attribute value.</param>
/// <returns></returns>
private List <UriResourceInformation> ExtractStyleUrls(
Uri baseUri,
string attributeName,
string attributeValue)
{
List <UriResourceInformation> result =
new List <UriResourceInformation>();
if (string.Compare(attributeName, @"style", true) == 0)
{
if (attributeValue != null &&
attributeValue.Trim().Length > 0)
{
MatchCollection matchs = Regex.Matches(
attributeValue,
@"url\s*\(\s*([^\)\s]+)\s*\)",
RegexOptions.Singleline | RegexOptions.IgnoreCase);
if (matchs.Count > 0)
{
foreach (Match match in matchs)
{
if (match != null && match.Success)
{
string url = match.Groups[1].Value;
UriResourceInformation ui =
new UriResourceInformation(
_settings.Options,
url,
new Uri(url, UriKind.RelativeOrAbsolute),
baseUri,
UriType.Resource);
bool isOnSameSite =
ui.IsOnSameSite(baseUri);
if ((isOnSameSite ||
!_settings.Options.StayOnSite) &&
ui.IsProcessableUri)
{
result.Add(ui);
}
}
}
}
}
}
return(result);
}
// ------------------------------------------------------------------
#endregion
#region Private methods.
// ------------------------------------------------------------------
/// <summary>
/// Does the extract links.
/// </summary>
/// <param name="xml">The XML.</param>
/// <param name="uriInfo">The URI info.</param>
/// <returns></returns>
private List<UriResourceInformation> DoExtractLinks(
XmlReader xml,
UriResourceInformation uriInfo )
{
List<UriResourceInformation> links =
new List<UriResourceInformation>();
while ( xml.Read() )
{
switch ( xml.NodeType )
{
// Added 2006-03-27: Inside comments, too.
case XmlNodeType.Comment:
XmlReader childXml =
GetDocReader( xml.Value, uriInfo.BaseUri );
List<UriResourceInformation> childLinks =
DoExtractLinks( childXml, uriInfo );
links.AddRange( childLinks );
break;
// A node element.
case XmlNodeType.Element:
string[] linkAttributeNames;
UriType linkType;
// If this is a link element, store the URLs to modify.
if ( IsLinkElement(
xml.Name,
out linkAttributeNames,
out linkType ) )
{
while ( xml.MoveToNextAttribute() )
{
links.AddRange(
ExtractStyleUrls(
uriInfo.BaseUriWithFolder,
xml.Name,
xml.Value ) );
foreach ( string a in linkAttributeNames )
{
if ( string.Compare( a, xml.Name, true ) == 0 )
{
string url = xml.Value;
UriResourceInformation ui =
new UriResourceInformation(
_settings.Options,
url,
new Uri( url, UriKind.RelativeOrAbsolute ),
uriInfo.BaseUriWithFolder,
linkType );
bool isOnSameSite =
ui.IsOnSameSite( uriInfo.BaseUri );
if ( (isOnSameSite ||
!_settings.Options.StayOnSite) &&
ui.IsProcessableUri )
{
links.Add( ui );
}
}
}
}
}
else
{
// Also, look for style attributes.
while ( xml.MoveToNextAttribute() )
{
links.AddRange(
ExtractStyleUrls(
uriInfo.BaseUriWithFolder,
xml.Name,
xml.Value ) );
}
}
break;
}
}
return links;
}
/// <summary>
/// Detects URLs in styles.
/// </summary>
/// <param name="baseUri">The base URI.</param>
/// <param name="attributeName">Name of the attribute.</param>
/// <param name="attributeValue">The attribute value.</param>
/// <returns></returns>
private List<UriResourceInformation> ExtractStyleUrls(
Uri baseUri,
string attributeName,
string attributeValue )
{
List<UriResourceInformation> result =
new List<UriResourceInformation>();
if ( string.Compare( attributeName, @"style", true ) == 0 )
{
if ( attributeValue != null &&
attributeValue.Trim().Length > 0 )
{
MatchCollection matchs = Regex.Matches(
attributeValue,
@"url\s*\(\s*([^\)\s]+)\s*\)",
RegexOptions.Singleline | RegexOptions.IgnoreCase );
if ( matchs.Count > 0 )
{
foreach ( Match match in matchs )
{
if ( match != null && match.Success )
{
string url = match.Groups[1].Value;
UriResourceInformation ui =
new UriResourceInformation(
_settings.Options,
url,
new Uri( url, UriKind.RelativeOrAbsolute ),
baseUri,
UriType.Resource );
bool isOnSameSite =
ui.IsOnSameSite( baseUri );
if ( (isOnSameSite ||
!_settings.Options.StayOnSite) &&
ui.IsProcessableUri )
{
result.Add( ui );
}
}
}
}
}
}
return result;
}
// ------------------------------------------------------------------
#endregion
#region Private methods.
// ------------------------------------------------------------------
/// <summary>
/// Does the extract links.
/// </summary>
/// <param name="xml">The XML.</param>
/// <param name="uriInfo">The URI info.</param>
/// <returns></returns>
private List <UriResourceInformation> DoExtractLinks(
XmlReader xml,
UriResourceInformation uriInfo)
{
List <UriResourceInformation> links =
new List <UriResourceInformation>();
while (xml.Read())
{
switch (xml.NodeType)
{
// Added 2006-03-27: Inside comments, too.
case XmlNodeType.Comment:
XmlReader childXml =
GetDocReader(xml.Value, uriInfo.BaseUri);
List <UriResourceInformation> childLinks =
DoExtractLinks(childXml, uriInfo);
links.AddRange(childLinks);
break;
// A node element.
case XmlNodeType.Element:
string[] linkAttributeNames;
UriType linkType;
// If this is a link element, store the URLs to modify.
if (IsLinkElement(
xml.Name,
out linkAttributeNames,
out linkType))
{
while (xml.MoveToNextAttribute())
{
links.AddRange(
ExtractStyleUrls(
uriInfo.BaseUriWithFolder,
xml.Name,
xml.Value));
foreach (string a in linkAttributeNames)
{
if (string.Compare(a, xml.Name, true) == 0)
{
string url = xml.Value;
UriResourceInformation ui =
new UriResourceInformation(
_settings.Options,
url,
new Uri(url, UriKind.RelativeOrAbsolute),
uriInfo.BaseUriWithFolder,
linkType);
bool isOnSameSite =
ui.IsOnSameSite(uriInfo.BaseUri);
if ((isOnSameSite ||
!_settings.Options.StayOnSite) &&
ui.IsProcessableUri)
{
links.Add(ui);
}
}
}
}
}
else
{
// Also, look for style attributes.
while (xml.MoveToNextAttribute())
{
links.AddRange(
ExtractStyleUrls(
uriInfo.BaseUriWithFolder,
xml.Name,
xml.Value));
}
}
break;
}
}
return(links);
}