public static IEnumerable <string> Query(this string data, string query, bool firstlevel = false)
{
var items = query.Split(' ');
foreach (var item in HTMLParsing.QueryHtml(data, new CSSQuery(items[0]), firstlevel))
{
if (items.Length > 1)
{
var c = ConcatString(items, 1);
if (string.IsNullOrWhiteSpace(c))
{
yield return(item);
}
else
{
foreach (var item2 in item.Query(c))
{
yield return(item2);
}
}
}
else
{
yield return(item);
}
}
}
public static IEnumerable <string> Query(this IEnumerable <string> data, string query)
{
var qitems = query.Split(' ');
foreach (var d in data)
{
foreach (var item in HTMLParsing.QueryHtml(d, new CSSQuery(qitems[0])))
{
if (qitems.Length > 1)
{
var c = ConcatString(qitems, 1);
if (string.IsNullOrWhiteSpace(c))
{
yield return(item);
}
else
{
foreach (var item2 in item.Query(c))
{
yield return(item2);
}
}
}
else
{
yield return(item);
}
}
}
}
public static IEnumerable <string> GetAttribute(this IEnumerable <string> data, string name)
{
foreach (var item in data)
{
yield return(HTMLParsing.ParseAttributeValue(name, item, 0));
}
}
public static string GetAttribute(this string data, string name)
{
if (string.IsNullOrWhiteSpace(data))
{
return("");
}
return(HTMLParsing.ParseAttributeValue(name, data, 0));
}
public static string RemoveTags(this string txt, string query)
{
var builder = new StringBuilder();
var hq = new CSSQuery(query);
var index = 0;
while (txt != null && index < txt.Length)
{
var elementStart = 0;
var e = HTMLParsing.NextElement(builder, ref index, txt, out elementStart);
if (index >= txt.Length)
{
break;
}
if (e == hq.Element || string.IsNullOrEmpty(hq.Element))
{
index = elementStart;
if (HTMLParsing.Validate(builder, ref index, txt, hq))
{
if (hq.Function != null)
{
var item = hq.Function.Post(builder, txt, ref index, e);
if (!string.IsNullOrEmpty(item))
{
txt = txt.Remove(elementStart, index - elementStart);
index = elementStart;
}
index++;
}
else
{
var subIndex = HTMLParsing.FindEndofElement(builder, txt, elementStart, e);
if (subIndex >= 0)
{
txt = txt.Remove(elementStart, subIndex);
index = elementStart;
}
}
}
}
index++;
}
return(txt);
}
public string Post(StringBuilder builder, string txt, ref int index, string element)
{
switch (Type)
{
case "eq":
{
int i = (int)Parameter;
i--;
Parameter = i;
if (i <= 0)
{
var html = HTMLParsing.ParseElement(builder, txt, ref index, element);
index = txt.Length;
return(html);
}
else
{
return(null);
}
}
break;
case "first":
{
var html = HTMLParsing.ParseElement(builder, txt, ref index, element);
index = txt.Length;
return(html);
}
case "contains":
{
var end = index + HTMLParsing.FindEndofElement(builder, txt, index, element);
var start = HTMLParsing.FindIgnoreCase(txt, ">", index, end);
if (HTMLParsing.FindIgnoreCase(txt, (string)Parameter, start, end) >= 0)
{
var html = HTMLParsing.ParseElement(builder, txt, ref index, element);
index = end;
return(html);
}
else
{
index = index + end;
}
return(null);
}
case "not":
{
var q1 = Parameter as HtmlQuery;
var elementStart = index;
if (!HTMLParsing.Validate(builder, ref index, txt, q1))
{
index = elementStart;
return(HTMLParsing.ParseElement(builder, txt, ref index, element));
}
}
break;
}
return(null);
}