/// <summary>
/// 5.4.8. Consume a function
/// </summary>
/// <returns></returns>
private Function ConsumeFunction()
{
//Create a function with a name equal to the value of the current input token, and with a value which is initially an empty list.
/// before calling this method, the calling method must already check that current token is a function token.
function_token token = currentToken as function_token;
Function func = new Function();
func.name = token.Value;
func.startindex = token.startIndex;
cssToken nexttoken = null;
while (true)
{
//Repeatedly consume the next input token and process it as follows:
nexttoken = ConsumeNextToken();
//<EOF-token>
//<)-token>
if (nexttoken.Type == enumTokenType.EOF || nexttoken.Type == enumTokenType.round_bracket_right)
{
//Return the function.
func.endindex = nexttoken.endIndex;
if (nexttoken.Type == enumTokenType.EOF)
{
func.endindex = func.endindex - 1;
}
return(func);
}
//anything else
else
{
//Reconsume the current input token. Consume a component value and append the returned value to the function’s value.
ReconsumeToken();
ComponentValue value = ConsumeComponentValue();
func.value.Add(value);
}
}
}
public static List <UrlInfo> GetUrlInfos(string CssText)
{
List <UrlInfo> urllist = new List <UrlInfo>();
if (string.IsNullOrEmpty(CssText))
{
return(urllist);
}
Kooboo.Dom.CSS.Tokenizer toknizer = new Kooboo.Dom.CSS.Tokenizer(CssText);
while (true)
{
cssToken token = toknizer.ConsumeNextToken();
if (token == null || token.Type == enumTokenType.EOF)
{
break;
}
else
{
if (token.Type == enumTokenType.url)
{
url_token urltoken = token as url_token;
string resourceurl = urltoken.value;
if (!string.IsNullOrEmpty(resourceurl))
{
urllist.Add(new UrlInfo()
{
StartIndex = urltoken.startIndex, EndIndex = urltoken.endIndex, RawUrl = resourceurl, isUrlToken = true
});
}
}
else if (token.Type == enumTokenType.at_keyword)
{
at_keyword_token keywordtoken = token as at_keyword_token;
if (keywordtoken.value.ToLower() == "import")
{
cssToken nexttoken = toknizer.ConsumeNextToken();
while (nexttoken.Type == enumTokenType.whitespace)
{
nexttoken = toknizer.ConsumeNextToken();
}
if (nexttoken.Type == enumTokenType.String)
{
string_token stringtoken = nexttoken as string_token;
if (!string.IsNullOrEmpty(stringtoken.value))
{
urllist.Add(new UrlInfo()
{
StartIndex = stringtoken.startIndex, EndIndex = stringtoken.endIndex, RawUrl = stringtoken.value, isImportRule = true
});
}
}
else if (nexttoken.Type == enumTokenType.url)
{
url_token urltoken = nexttoken as url_token;
string resourceurl = urltoken.value;
if (!string.IsNullOrEmpty(resourceurl))
{
urllist.Add(new UrlInfo()
{
StartIndex = urltoken.startIndex, EndIndex = urltoken.endIndex, RawUrl = resourceurl, isUrlToken = true, isImportRule = true
});
}
}
else if (nexttoken.Type == enumTokenType.function)
{
function_token functoken = nexttoken as function_token;
string functionvalue = functoken.Value;
if (functionvalue.ToLower() == "url")
{
nexttoken = toknizer.ConsumeNextToken();
while (nexttoken.Type == enumTokenType.whitespace)
{
nexttoken = toknizer.ConsumeNextToken();
}
if (nexttoken == null || nexttoken.Type == enumTokenType.EOF)
{
break;
}
if (nexttoken.Type == enumTokenType.String)
{
string_token stringtoken = nexttoken as string_token;
if (!string.IsNullOrEmpty(stringtoken.value))
{
urllist.Add(new UrlInfo()
{
StartIndex = stringtoken.startIndex, EndIndex = stringtoken.endIndex, RawUrl = stringtoken.value, isImportRule = true
});
}
}
else if (nexttoken.Type == enumTokenType.url)
{
url_token urltoken = nexttoken as url_token;
string resourceurl = urltoken.value;
if (!string.IsNullOrEmpty(resourceurl))
{
urllist.Add(new UrlInfo()
{
StartIndex = urltoken.startIndex, EndIndex = urltoken.endIndex, RawUrl = resourceurl, isUrlToken = true, isImportRule = true
});
}
}
}
}
}
}
else if (token.Type == enumTokenType.function)
{
function_token functoken = token as function_token;
string functionvalue = functoken.Value;
if (functionvalue.ToLower() == "url")
{
cssToken nexttoken = toknizer.ConsumeNextToken();
while (nexttoken.Type == enumTokenType.whitespace)
{
nexttoken = toknizer.ConsumeNextToken();
}
if (nexttoken == null || nexttoken.Type == enumTokenType.EOF)
{
break;
}
if (nexttoken.Type == enumTokenType.String)
{
string_token stringtoken = nexttoken as string_token;
if (!string.IsNullOrEmpty(stringtoken.value))
{
urllist.Add(new UrlInfo()
{
StartIndex = stringtoken.startIndex, EndIndex = stringtoken.endIndex, RawUrl = stringtoken.value
});
}
}
}
}
}
}
return(cleanSpecialMark(urllist));
}