public void Handle(TokenParser context, ICollection<Token> tokens, char ch)
{
if (HandleCore(context, tokens, ch) == false)
{
context.TokenBuilder.Append(ch);
}
}
protected override bool HandleCore(TokenParser context, ICollection<Token> tokens, char ch)
{
if (ch == '>')
{
Token token = context.SwitchState(TokenType.Text, new TextHandler());
tokens.Add(token);
if (token.Type == TokenType.OpenTag && (token.Value == "script" || token.Value == "style"))
{
tokens.Add(context.SwitchState(TokenType.Text, new CDataHandler(string.Format("</{0}", token.Value))));
}
return true;
}
if (ch == '/' || Char.IsWhiteSpace(ch))
{
var handler = new AttibuteNameHandler();
Token token = context.SwitchState(TokenType.AttributeName, handler);
if (token.Type == TokenType.OpenTag && (token.Value == "script" || token.Value == "style"))
{
handler.ReplaceNextTagOrTextTokenWithCData = string.Format("</{0}", token.Value);
}
tokens.Add(token);
return true;
}
return false;
}
protected override bool HandleCore(TokenParser context, ICollection<Token> tokens, char ch)
{
if (ch == '>')
{
tokens.Add(string.IsNullOrEmpty(ReplaceNextTagOrTextTokenWithCData)
? context.SwitchState(TokenType.Text, new TextHandler())
: context.SwitchState(TokenType.Text, new CDataHandler(ReplaceNextTagOrTextTokenWithCData)));
return true;
}
return false;
}
protected override bool HandleCore(TokenParser context, ICollection<Token> tokens, char ch)
{
if (chars.Contains(ch))
{
tokens.Add(context.SwitchState(TokenType.AttributeName,
new AttibuteNameHandler
{
ReplaceNextTagOrTextTokenWithCData = ReplaceNextTagOrTextTokenWithCData
}));
return true;
}
return base.HandleCore(context, tokens, ch);
}
protected override bool HandleCore(TokenParser context, ICollection<Token> tokens, char ch)
{
if (state == State.AttributeValueBegin)
{
if (ch == '"' || ch == '\'')
{
tokens.Add(context.SwitchState(TokenType.AttributeValue, new AttibuteValueHandler(ch)
{
ReplaceNextTagOrTextTokenWithCData =
ReplaceNextTagOrTextTokenWithCData
}));
return true;
}
if (!Char.IsWhiteSpace(ch))
{
tokens.Add(context.SwitchState(TokenType.AttributeValue,
new AttibuteValueHandler(' ', '\t', '\r', '\x00a0', '\x0085')
{
ReplaceNextTagOrTextTokenWithCData = ReplaceNextTagOrTextTokenWithCData
}));
return false;
}
return true;
}
if (ch == '=')
{
state = State.AttributeValueBegin;
return true;
}
if (ch == '/' || Char.IsWhiteSpace(ch))
{
tokens.Add(context.SwitchState(TokenType.AttributeName, new AttibuteNameHandler
{
ReplaceNextTagOrTextTokenWithCData =
ReplaceNextTagOrTextTokenWithCData
}));
return true;
}
return base.HandleCore(context, tokens, ch);
}
protected override bool HandleCore(TokenParser context, ICollection<Token> tokens, char ch)
{
if (closeToken[index] == ch)
{
index++;
if (index >= closeToken.Length)
{
tokens.Add(context.SwitchState(TokenType.CloseTag, new TagHandler()));
context.TokenBuilder.Append(closeToken.Substring(2));
}
return true;
}
if (index > 0)
{
context.TokenBuilder.Append(closeToken.Substring(0, index));
index = 0;
}
return false;
}
protected abstract bool HandleCore(TokenParser context, ICollection<Token> tokens, char ch);
public static HtmlNode Parse(string html)
{
IEnumerable<Token> tokens = new TokenParser().Parse(html);
return TreeBuilder.Build(tokens);
}