private void ParseInnerStyles(StyleGroup group, int grpStart, int grpLen)
{
var content = _str.Substring(grpStart, grpLen);
var enumerator = new StringEnumerator(content);
var prev = _str;
_str = enumerator;
while (this.MoveNext())
{
if (this._log.ShouldLog(TraceLevel.Verbose))
{
this._log.Add(TraceLevel.Verbose, "CSS", "Found css style for " + this.Current.ToString() + " parsing inner contents");
}
if (null != this.Current)
{
group.Styles.Add(this.Current);
}
}
_str = prev;
}
/// <summary>
/// Returns the character that has been escasped as the current position (just after the ampersand)
/// </summary>
/// <returns></returns>
private char ReadHtmlEscapedChar(StringEnumerator src)
{
//Fall back if not found is just to output as is.
//So we need to remember where we were.
int curPos = src.Offset;
int ampersandPos = curPos - 1;
char cur = src.Current;
bool terminated = true;
while (cur != HTMLEntityEndMarker)
{
if (!src.MoveNext())
{
terminated = false;
break;
}
if (src.Offset > curPos + 10) //Max limit of HTML Entities - we are missing a teminating ;
{
terminated = false;
break;
}
cur = src.Current;
}
if (terminated)
{
int length = 1 + src.Offset - ampersandPos;
string entity = src.Substring(ampersandPos, length);
char found;
if (entity.Length < 3)
{
src.Offset = curPos;
return(HTMLEntityStartMarker);
}
else if (entity[1] == HTMLEntityNumberMarker) //we have the character number
{
int charNum;
if (entity[2] == '#' && int.TryParse(entity.Substring(3, entity.Length - 4), System.Globalization.NumberStyles.HexNumber, null, out charNum))
{
//we are using the hex codes rather than decimal
found = (char)charNum;
src.MoveNext();
//TODO: Tests for parsing html numbers
return(found);
}
else if (int.TryParse(entity.Substring(2, entity.Length - 3), out charNum))
{
found = (char)charNum;
src.MoveNext();
return(found);
}
else //could not parse the number
{
src.Offset = curPos;
return(HTMLEntityStartMarker);
}
}
else if (this.Parser.Settings.HTMLEntityMappings.TryGetValue(entity, out found))
{
src.MoveNext(); //past the ;
return(found);
}
else //Don't know this one so just go back to the orginal offset and return
{
src.Offset = curPos;
return(HTMLEntityStartMarker);
}
}
else //Hit End of String or character limit before terminator
{
src.Offset = curPos;
return(HTMLEntityStartMarker);
}
}
public static string UnEscapeHtmlString(string value)
{
int ampersandPos = value.IndexOf(HTMLEntityStartMarker);
if (ampersandPos < 0)
{
return(value);
}
StringBuilder buffer = new StringBuilder();
StringEnumerator src = new StringEnumerator(value);
src.MoveNext();
while (ampersandPos >= 0)
{
if (src.Offset < ampersandPos - 1)
{
buffer.Append(value, src.Offset, ampersandPos - (src.Offset));
}
src.Offset = ampersandPos;
bool terminated = true;
while (src.Current != HTMLEntityEndMarker)
{
if (!src.MoveNext())
{
terminated = false;
break;
}
else if (src.Offset > ampersandPos + 10)
{
terminated = false;
break;
}
}
if (terminated)
{
int len = 1 + src.Offset - ampersandPos;
char found;
if (len > 3)
{
string entity = src.Substring(ampersandPos, len);
if (entity[1] == HTMLEntityNumberMarker)
{
int charNum;
if (int.TryParse(entity.Substring(2, entity.Length - 3), out charNum))
{
found = (char)charNum;
src.MoveNext();
buffer.Append(found);
}
}
//else if (HTMLParserSettings.DefaultEscapedHTMLEntities.TryGetValue(entity, out found))
//{
// buffer.Append(found);
// src.MoveNext();
//}
}
}
ampersandPos = value.IndexOf(HTMLEntityStartMarker, src.Offset);
}
if (src.Offset < src.Length)
{
buffer.Append(src.Substring(src.Length - src.Offset));
}
return(buffer.ToString());
}
