/// <summary>
/// Removes URL attribute in css urls like this: url(other.css) will change to "other.css"
/// </summary>
public static bool RemoveUrlAttribCssLocation(string text, out string result)
{
result = text;
const string urlAttrib = "url(";
const string urlEnd = ")";
// start attrib
int start = StringCompare.IndexOfIgnoreCase(ref text, urlAttrib);
if (start == -1)
{
return(false);
}
text = text.Remove(start, urlAttrib.Length);
// end attrib
start = StringCompare.IndexOfMatchCase(ref text, urlEnd);
if (start == -1)
{
return(false);
}
text = text.Remove(start, urlEnd.Length);
result = text;
return(true);
}
public static string GetContentType(ref string html, string defaultValue)
{
string result = defaultValue;
int end, tmp, start = StringCompare.IndexOfIgnoreCase(ref html, "<meta");
if (start == -1)
{
return(result);
}
tmp = StringCompare.IndexOfIgnoreCase(ref html, "http-equiv=\"content-type\"", start);
if (tmp == -1)
{
tmp = StringCompare.IndexOfIgnoreCase(ref html, "http-equiv='content-type'", start);
if (tmp == -1)
{
tmp = StringCompare.IndexOfIgnoreCase(ref html, "http-equiv=content-type", start);
if (tmp == -1)
{
tmp = StringCompare.IndexOfIgnoreCase(ref html, "http-equiv= content-type", start);
if (tmp == -1)
{
return(result);
}
}
}
}
start = tmp;
start = StringCompare.IndexOfIgnoreCase(ref html, "charset", start);
if (start == -1)
{
return(result);
}
start = StringCompare.IndexOfIgnoreCase(ref html, "=", start);
if (start == -1)
{
return(result);
}
start++;
end = StringCompare.IndexOfIgnoreCase(ref html, "\"", start);
if (end == -1)
{
return(result);
}
tmp = StringCompare.IndexOfIgnoreCase(ref html, "\'", start);
if (tmp > start && end > tmp)
{
end = tmp;
}
result = html.Substring(start, end - start);
result = result.Trim();
return(result);
}
/// <summary>
/// Finds and returns DOCTYPE definition.
/// </summary>
public static string GetDocType(ref string html)
{
const string startTag = "<!DOCTYPE";
const string endTag = ">";
int start, end;
string result = "";
start = StringCompare.IndexOfIgnoreCase(ref html, startTag);
if (start == -1)
{
return(result);
}
end = StringCompare.IndexOfIgnoreCase(ref html, endTag, start);
if (end == -1)
{
return(result);
}
// add a character length to position
end++;
// Test start tag
if (start > 0)
{
// DocType should be first tag in html document
string temp = html.Substring(0, start).Trim();
if (temp.Length > 0 && temp.IndexOf('<') != -1)
{
return(result);
}
}
// substring
result = html.Substring(start, end - start);
return(result);
}
/// <summary>
/// Specifies that a string with specified position index, is enclosed by some tags
/// </summary>
public static bool IsEnclosedBy(ref string htmlCode, int index, string startTag, string endTag)
{
int start = StringCompare.LastIndexOfIgnoreCase(ref htmlCode, startTag, index);
if (start == -1)
{
return(false);
}
int end = StringCompare.IndexOfIgnoreCase(ref htmlCode, endTag, start);
if (end == -1)
{
return(true);
}
if (end > index)
{
return(true);
}
return(false);
}
public static bool IsFramesetHtml(ref string html)
{
return(StringCompare.IndexOfIgnoreCase(ref html, "<frameset", 0) != -1);
}
