/// <summary>
/// Parse in tag
/// </summary>
protected ParsedToken ParseInTag()
{
_CurrentRead = null;
// Whitespaces
CharInfo c;
while ((c = ReadChar(false)) != CharInfo.EOF && Char.IsWhiteSpace(c.AsChar))
{
;
}
var cpos = c.Position;
// EOF ?
if (c == CharInfo.EOF)
{
_CurrentToken = null;
_State = ParseState.Content;
ResetTagBuffer();
throw new ParseError("Unexpected end of file. Tag not closed.", ReadPosition);
}
// End of auto closed tag ?
else if (c == '/' && _State == ParseState.Tag)
{
CharInfo saveSlash = c;
bool spaces = false;
while ((c = ReadChar(false)) != CharInfo.EOF && Char.IsWhiteSpace(c.AsChar))
{
spaces = true;
}
if (c != '>')
{
// Prepare a correct next tag
SaveChar(new CharInfo('>', (c == CharInfo.EOF) ? saveSlash.Position : c.Position));
SaveChar(saveSlash);
throw new ParseError("Invalid char after '/'. End of auto closed tag expected.", cpos);
}
if (spaces)
{
// Prepare a correct next tag
SaveChar(c);
SaveChar(saveSlash);
// Raise the error
throw new ParseError("Invalid auto closed tag, '/' need to be follow by '>'.", cpos);
}
// Returns autoclosed
var result = ParsedTag.AutoClosedTag(((ParsedTag)_CurrentToken).TagName);
result.Position = cpos;
_CurrentToken = null;
_CurrentRead = null;
_State = ParseState.Content;
ResetTagBuffer();
return(result);
}
// End of process instruction
else if (c == '?' && _State == ParseState.ProcessInstruction)
{
c = ReadChar(false);
if (c != '>')
{
throw new ParseError("Invalid char after '?'. End of process instruction expected.", cpos);
}
// Returns processinstruction
var result = ParsedTag.CloseProcessInstruction(((ParsedTag)_CurrentToken).TagName);
result.Position = cpos;
_CurrentToken = null;
_CurrentRead = null;
_State = ParseState.Content;
ResetTagBuffer();
return(result);
}
else if (c == '>')
{
// Check tag
if (_State == ParseState.ProcessInstruction)
{
throw new ParseError("A process instruction need to be closed with '?>'.", cpos);
}
// Returns close
var result = ParsedTag.CloseTag(((ParsedTag)_CurrentToken).TagName);
result.Position = cpos;
_CurrentToken = null;
_CurrentRead = null;
_State = ParseState.Content;
ResetTagBuffer();
return(result);
}
// Get the attribute name
if (!IsAttributeNameChar(c.AsChar))
{
throw new ParseError("Unexpected character.", cpos);
}
AddToCurrentRead(c);
while ((c = ReadChar(false)) != CharInfo.EOF && IsAttributeNameChar(c.AsChar))
{
AddToCurrentRead(c);
}
if (c != CharInfo.EOF)
{
SaveChar(c);
}
String attrName = GetCurrentRead(true);
ParsePosition attrPos = cpos;
// Whitespaces
while ((c = ReadChar(false)) != CharInfo.EOF && Char.IsWhiteSpace(c.AsChar))
{
;
}
// Attribute whithout value
if (c != '=')
{
SaveChar(c);
// Attribute whithout content
return(new ParsedAttribute()
{
Position = attrPos,
Name = attrName,
Value = null,
Quote = '\0'
});
}
// Whitespaces
while ((c = ReadChar(false)) != CharInfo.EOF && Char.IsWhiteSpace(c.AsChar))
{
;
}
// Search the value
if (c == 0 || c == '/' || c == '?' || c == '>')
{
_CurrentAttr = new ParsedAttribute()
{
Position = attrPos,
Name = attrName,
Value = null,
Quote = '\0'
};
if (c != CharInfo.EOF)
{
SaveChar(c);
}
throw new ParseError("Attribute value expected.", ReadPosition);
}
// Quoted value ?
_CurrentRead = null;
char quote = '\0';
if (c == '"' || c == '\'')
{
quote = c.AsChar;
while ((c = ReadChar(false)) != CharInfo.EOF && c != quote)
{
AddToCurrentRead(c);
}
_CurrentAttr = new ParsedAttribute()
{
Position = attrPos,
Name = attrName,
Value = HEntity.HtmlDecode(GetCurrentRead(true), RemoveUnknownOrInvalidEntities),
Quote = quote
};
if (c == CharInfo.EOF)
{
throw new ParseError("Unexpected end of file. Attribute is not closed.", ReadPosition);
}
var result = _CurrentAttr;
_CurrentAttr = null;
return(result);
}
// Unquoted value
AddToCurrentRead(c);
while ((c = ReadChar(false)) != CharInfo.EOF && !Char.IsWhiteSpace(c.AsChar) && c != '"' && c != '\'' && c != '=' && c != '<' && c != '>' && c != '`')
{
AddToCurrentRead(c);
}
SaveChar(c);
return(new ParsedAttribute()
{
Position = attrPos,
Name = attrName,
Value = HEntity.HtmlDecode(GetCurrentRead(true), RemoveUnknownOrInvalidEntities),
Quote = quote
});
}
