private static void ReplaceTagSrcAttribute(ref string htmlCodes,
string pageUrlNoQuery,
string tagName,
string attributeName,
string pagePath,
string newPageFormat,
string siteRootUrl,
bool encodeUrl,
string extraAttributeFormat,
bool canEncloseWithTags)
{
int index = 0; //====== In first run, index must be Zero ======
TextRange position;
string oldValue, newValue;
string orgValue = "";
string bookmarkPart = "";
string newAttribute = "";
bool addNewAttribute = false;
bool hasNewAttribute = false;
if (!string.IsNullOrEmpty(extraAttributeFormat))
{
addNewAttribute = true;
hasNewAttribute = true;
}
do
{
addNewAttribute = hasNewAttribute;
position = HtmlParser.GetTagAttributeValuePos(ref htmlCodes, tagName, attributeName, index);
if (position.Start == -1)
{
break;
}
// If requested, test statement that shouldn't enclose with specified tags
bool continueLoop = true;
// this causes heavy pressure
//if (canEncloseWithTags && position.Start != -1 && position.End != -1)
// continueLoop = !HtmlTags.IsEnclosedBy(ref htmlCodes, position.Start, "<script", "</script>");
if (continueLoop &&
position.Start != -1 &&
position.End != -1 &&
position.End > position.Start)
{
//======OK. go to end of tag=============
index = StringCompare.IndexOfMatchCase(ref htmlCodes, '>', position.Start);
// Replace new address
//====== Correct value position according to quotes existence=======
//position = ASProxyFunctions.CorrectValueIfQuoteExists(ref pageHtml, position);
//====== Get the attribute value ======
oldValue = htmlCodes.Substring(position.Start, position.End - position.Start);
oldValue = HtmlTags.RemoveEscapeQuotesFromTagAttributeValue(oldValue);
oldValue = HtmlTags.RemoveQuotesFromTagAttributeValue(oldValue);
//===== If link is a bookmark don't change it=====
if (oldValue.StartsWith("#"))
{
continue;
}
if (UrlProvider.IsClientSitdeUrl(oldValue) == false)
{
//====== Convert virtual url to absolute ======
oldValue = UrlProvider.JoinUrl(oldValue, pageUrlNoQuery, pagePath, siteRootUrl);
//====== Delete invalid character such as tab and line feed ======
oldValue = UrlProvider.IgnoreInvalidUrlCharctersInHtml(oldValue);
// Save orginal value
orgValue = oldValue;
//===== If another site url, has bookmark
if (oldValue.IndexOf('#') != -1)
{
oldValue = UrlBuilder.RemoveUrlBookmark(oldValue, out bookmarkPart);
}
//====== Get desigred url addrress
oldValue = HttpUtility.HtmlDecode(oldValue);
//====== Encode url to make it unknown ======
if (encodeUrl)
{
oldValue = UrlProvider.EncodeUrl(oldValue);
}
else
{
// just url safe
oldValue = UrlProvider.EscapeUrlQuery(oldValue);
}
//====== Add it to our url ======
newValue = string.Format(newPageFormat, oldValue);
//===== Add bookmark to last url =====
if (bookmarkPart.Length > 0)
{
newValue += bookmarkPart;
bookmarkPart = "";
}
}
else
{
newValue = oldValue;
addNewAttribute = false;
}
//====== Make it safe
newValue = HttpUtility.HtmlEncode(newValue);
//====== Replace it with old url
htmlCodes = htmlCodes.Remove(position.Start, position.End - position.Start);
htmlCodes = htmlCodes.Insert(position.Start, newValue);
if (addNewAttribute)
{
// Apply original value and encoded value to format
// BUG: Problem with format string that contain (') or (") characters
// Bug Fixed since version 4.7
newAttribute = string.Format(extraAttributeFormat, orgValue, newValue);
// Locate end of tag
index = StringCompare.IndexOfMatchCase(ref htmlCodes, '>', position.Start);
if (htmlCodes[index - 1] == '/')
{
index--;
}
// Insert to tag
htmlCodes = htmlCodes.Insert(index, newAttribute);
}
//===============End of Replace new address =========
}
else
{
if (position.Start != -1)
{
index = position.Start;
}
index = StringCompare.IndexOfMatchCase(ref htmlCodes, '>', index);
}
}while ((index != -1));
}
/// <summary>
/// Find "BASE" tag and return "HREF" attrribute value, then remove the tag "HREF" attribute.
/// </summary>
/// <param name="hrefPath">href value</param>
/// <returns>return if Base tag found or not</returns>
public static bool ReplaceBaseSources(ref string pageHtml,
bool removeHREFAttribute,
out string hrefPath)
{
string tagName = "<base";
string attributeName = "href";
TextRange position;
string oldValue;
hrefPath = "";
// Find position of BASE tag
position = HtmlParser.GetTagAttributeValuePos(ref pageHtml, tagName, attributeName, 0);
// If any Base tag exists
if (position.Start != -1 && position.End != -1)
{
//====== Get the attribute value ======
oldValue = pageHtml.Substring(position.Start, position.End - position.Start);
// Remove unwanted characters
oldValue = HtmlTags.RemoveEscapeQuotesFromTagAttributeValue(oldValue);
oldValue = HtmlTags.RemoveQuotesFromTagAttributeValue(oldValue);
//===== If link is a bookmark don't change it =====
if (oldValue.Length == 0 || oldValue.StartsWith("#"))
{
return(false);
}
// Browsers law!! The base url should end with slash(/)
if (oldValue[oldValue.Length - 1] != '/')
{
// If the entered url isn't a directory specified with (/)
// try to find the end a base directory
int lastI = oldValue.LastIndexOf('/');
if (lastI == -1)
{
return(false);
}
lastI++; // character lenght
oldValue = oldValue.Substring(0, lastI);
}
// Set href value
hrefPath = oldValue;
//====== Replace it with old url ======
if (removeHREFAttribute)
{
pageHtml = pageHtml.Remove(position.Start, position.End - position.Start);
}
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// Process the styles and replace them
/// </summary>
public static void ReplaceCSSClassStyleUrl(ref string htmlCode, string currentUrlWithoutParameters, string newUrl, string replacmentBasePath, string siteAddress, bool encodeUrl, bool forImportRule)
{
int index = 0;
TextRange position;
string oldValue, newValue;
string bookmarkPart = "";
do
{
if (forImportRule)
{
// do not find "Import Rule"s with url option, it will done by other codes. Since v4.0
position = CSSParser.FindImportRuleUrlPosition(ref htmlCode, index, false, false);
}
else
{
position = CSSParser.FindCSSClassStyleUrlValuePosition(ref htmlCode, index);
}
if (position.Start == -1)
{
break;
}
if (position.Start != -1 && position.End != -1)
{
bool shouldAddQuote = false;
//======OK. go to end of tag=============
index = position.End;
//========================================================//
//====================Replace new address=================//
//========================================================//
//====== Correct value position according to quotes existence=======
position = HtmlTags.CorrectValueIfQuoteExists(ref htmlCode, position);
//====== Get the attribute value ======
oldValue = htmlCode.Substring(position.Start, position.End - position.Start);
// Trim!
oldValue = oldValue.Trim();
// Removes URL attribute if there is any
if (HtmlTags.RemoveUrlAttribCssLocation(oldValue, out oldValue))
{
shouldAddQuote = true;
}
oldValue = HtmlTags.RemoveQuotesFromTagAttributeValue(oldValue);
//===== If link is a bookmark don't change it=====
if (oldValue.StartsWith("#"))
{
continue;
}
//====== Convert virtual url to absolute ======
oldValue = UrlProvider.JoinUrl(oldValue, currentUrlWithoutParameters, replacmentBasePath, siteAddress);
//====== Delete invalid character such as tab and line feed ======
oldValue = UrlProvider.IgnoreInvalidUrlCharctersInHtml(oldValue);
//===== If another site url, has bookmark=====
if (StringCompare.IndexOfMatchCase(ref oldValue, '#') != -1)
{
oldValue = UrlBuilder.RemoveUrlBookmark(oldValue, out bookmarkPart);
}
//==== Make it clear=========
oldValue = HttpUtility.HtmlDecode(oldValue);
//====== Encode url to make it unknown ======
if (encodeUrl)
{
oldValue = UrlProvider.EncodeUrl(oldValue);
}
else
{
// just url safe
oldValue = UrlProvider.EscapeUrlQuery(oldValue);
}
//====== Add it to our url ======
newValue = string.Format(newUrl, oldValue);
//===== Add bookmark to last url =====
if (bookmarkPart.Length > 0)
{
newValue += bookmarkPart;
bookmarkPart = "";
}
// Make it safe
//newValue = HttpUtility.HtmlEncode(newValue);
if (shouldAddQuote)
{
newValue = "\"" + newValue + "\"";
}
//====== Replace it with old url ======
htmlCode = htmlCode.Remove(position.Start, position.End - position.Start);
htmlCode = htmlCode.Insert(position.Start, newValue);
//========================================================//
//==============End of Replace new address================//
//========================================================//
}
else
{
if (position.Start != -1)
{
index = position.Start;
}
index = StringCompare.IndexOfMatchCase(ref htmlCode, ' ', index);
}
}while ((index != -1));
}