/// <summary>
/// The push attribute name start.
/// </summary>
/// <param name="index">The index.</param>
private void PushAttributeNameStart(int index)
{
this.currentattribute = this.CreateAttribute();
this.currentattribute.NameStartIndex = index;
this.currentattribute.Line = this.line;
this.currentattribute.LinePosition = this.lineposition;
this.currentattribute.StreamPosition = index;
}
/// <summary>
/// The write attribute.
/// </summary>
/// <param name="outText">
/// The out text.
/// </param>
/// <param name="att">
/// The att.
/// </param>
internal void WriteAttribute(TextWriter outText, HtmlAttribute att)
{
string name;
string quote = att.QuoteType == AttributeValueQuote.DoubleQuote ? "\"" : "'";
if (this.OwnerDocument.OptionOutputAsXml)
{
name = this.OwnerDocument.OptionOutputUpperCase ? att.XmlName.ToUpper() : att.XmlName;
if (this.OwnerDocument.OptionOutputOriginalCase)
{
name = att.OriginalName;
}
outText.Write(" " + name + "=" + quote + HtmlDocument.HtmlEncode(att.XmlValue) + quote);
}
else
{
name = this.OwnerDocument.OptionOutputUpperCase ? att.Name.ToUpper() : att.Name;
if (att.Name.Length >= 4)
{
if ((att.Name[0] == '<') && (att.Name[1] == '%') && (att.Name[att.Name.Length - 1] == '>')
&& (att.Name[att.Name.Length - 2] == '%'))
{
outText.Write(" " + name);
return;
}
}
if (this.OwnerDocument.OptionOutputOptimizeAttributeValues)
{
if (att.Value.IndexOfAny(new[] { (char)10, (char)13, (char)9, ' ' }) < 0)
{
outText.Write(" " + name + "=" + att.Value);
}
else
{
outText.Write(" " + name + "=" + quote + att.Value + quote);
}
}
else
{
outText.Write(" " + name + "=" + quote + att.Value + quote);
}
}
}
/// <summary>
/// The parse.
/// </summary>
private void Parse()
{
int lastquote = 0;
this.LastNodes = new Dictionary<string, HtmlNode>();
this.currentchar = 0;
this.fullcomment = false;
this.parseerrors = new List<HtmlParseError>();
this.line = 1;
this.lineposition = 1;
this.maxlineposition = 1;
this.state = ParseState.Text;
this.oldstate = this.state;
this.documentnode.InnerLength = this.Text.Length;
this.documentnode.OuterLength = this.Text.Length;
this.RemainderOffset = this.Text.Length;
this.lastparentnode = this.documentnode;
this.currentnode = this.CreateNode(HtmlNodeType.Text, 0);
this.currentattribute = null;
this.cuurrentindex = 0;
this.PushNodeStart(HtmlNodeType.Text, 0);
while (this.cuurrentindex < this.Text.Length)
{
this.currentchar = this.Text[this.cuurrentindex];
this.IncrementPosition();
switch (this.state)
{
case ParseState.Text:
if (this.NewCheck())
{
continue;
}
break;
case ParseState.WhichTag:
if (this.NewCheck())
{
continue;
}
if (this.currentchar == '/')
{
this.PushNodeNameStart(false, this.cuurrentindex);
}
else
{
this.PushNodeNameStart(true, this.cuurrentindex - 1);
this.DecrementPosition();
}
this.state = ParseState.Tag;
break;
case ParseState.Tag:
if (this.NewCheck())
{
continue;
}
if (IsWhiteSpace(this.currentchar))
{
this.PushNodeNameEnd(this.cuurrentindex - 1);
if (this.state != ParseState.Tag)
{
continue;
}
this.state = ParseState.BetweenAttributes;
continue;
}
if (this.currentchar == '/')
{
this.PushNodeNameEnd(this.cuurrentindex - 1);
if (this.state != ParseState.Tag)
{
continue;
}
this.state = ParseState.EmptyTag;
continue;
}
if (this.currentchar == '>')
{
this.PushNodeNameEnd(this.cuurrentindex - 1);
if (this.state != ParseState.Tag)
{
continue;
}
if (!this.PushNodeEnd(this.cuurrentindex, false))
{
// stop parsing
this.cuurrentindex = this.Text.Length;
break;
}
if (this.state != ParseState.Tag)
{
continue;
}
this.state = ParseState.Text;
this.PushNodeStart(HtmlNodeType.Text, this.cuurrentindex);
}
break;
case ParseState.BetweenAttributes:
if (this.NewCheck())
{
continue;
}
if (IsWhiteSpace(this.currentchar))
{
continue;
}
if ((this.currentchar == '/') || (this.currentchar == '?'))
{
this.state = ParseState.EmptyTag;
continue;
}
if (this.currentchar == '>')
{
if (!this.PushNodeEnd(this.cuurrentindex, false))
{
// stop parsing
this.cuurrentindex = this.Text.Length;
break;
}
if (this.state != ParseState.BetweenAttributes)
{
continue;
}
this.state = ParseState.Text;
this.PushNodeStart(HtmlNodeType.Text, this.cuurrentindex);
continue;
}
this.PushAttributeNameStart(this.cuurrentindex - 1);
this.state = ParseState.AttributeName;
break;
case ParseState.EmptyTag:
if (this.NewCheck())
{
continue;
}
if (this.currentchar == '>')
{
if (!this.PushNodeEnd(this.cuurrentindex, true))
{
// stop parsing
this.cuurrentindex = this.Text.Length;
break;
}
if (this.state != ParseState.EmptyTag)
{
continue;
}
this.state = ParseState.Text;
this.PushNodeStart(HtmlNodeType.Text, this.cuurrentindex);
continue;
}
this.state = ParseState.BetweenAttributes;
break;
case ParseState.AttributeName:
if (this.NewCheck())
{
continue;
}
if (IsWhiteSpace(this.currentchar))
{
this.PushAttributeNameEnd(this.cuurrentindex - 1);
this.state = ParseState.AttributeBeforeEquals;
continue;
}
if (this.currentchar == '=')
{
this.PushAttributeNameEnd(this.cuurrentindex - 1);
this.state = ParseState.AttributeAfterEquals;
continue;
}
if (this.currentchar == '>')
{
this.PushAttributeNameEnd(this.cuurrentindex - 1);
if (!this.PushNodeEnd(this.cuurrentindex, false))
{
// stop parsing
this.cuurrentindex = this.Text.Length;
break;
}
if (this.state != ParseState.AttributeName)
{
continue;
}
this.state = ParseState.Text;
this.PushNodeStart(HtmlNodeType.Text, this.cuurrentindex);
continue;
}
break;
case ParseState.AttributeBeforeEquals:
if (this.NewCheck())
{
continue;
}
if (IsWhiteSpace(this.currentchar))
{
continue;
}
if (this.currentchar == '>')
{
if (!this.PushNodeEnd(this.cuurrentindex, false))
{
// stop parsing
this.cuurrentindex = this.Text.Length;
break;
}
if (this.state != ParseState.AttributeBeforeEquals)
{
continue;
}
this.state = ParseState.Text;
this.PushNodeStart(HtmlNodeType.Text, this.cuurrentindex);
continue;
}
if (this.currentchar == '=')
{
this.state = ParseState.AttributeAfterEquals;
continue;
}
// no equals, no whitespace, it's a new attrribute starting
this.state = ParseState.BetweenAttributes;
this.DecrementPosition();
break;
case ParseState.AttributeAfterEquals:
if (this.NewCheck())
{
continue;
}
if (IsWhiteSpace(this.currentchar))
{
continue;
}
if ((this.currentchar == '\'') || (this.currentchar == '"'))
{
this.state = ParseState.QuotedAttributeValue;
this.PushAttributeValueStart(this.cuurrentindex, this.currentchar);
lastquote = this.currentchar;
continue;
}
if (this.currentchar == '>')
{
if (!this.PushNodeEnd(this.cuurrentindex, false))
{
// stop parsing
this.cuurrentindex = this.Text.Length;
break;
}
if (this.state != ParseState.AttributeAfterEquals)
{
continue;
}
this.state = ParseState.Text;
this.PushNodeStart(HtmlNodeType.Text, this.cuurrentindex);
continue;
}
this.PushAttributeValueStart(this.cuurrentindex - 1);
this.state = ParseState.AttributeValue;
break;
case ParseState.AttributeValue:
if (this.NewCheck())
{
continue;
}
if (IsWhiteSpace(this.currentchar))
{
this.PushAttributeValueEnd(this.cuurrentindex - 1);
this.state = ParseState.BetweenAttributes;
continue;
}
if (this.currentchar == '>')
{
this.PushAttributeValueEnd(this.cuurrentindex - 1);
if (!this.PushNodeEnd(this.cuurrentindex, false))
{
// stop parsing
this.cuurrentindex = this.Text.Length;
break;
}
if (this.state != ParseState.AttributeValue)
{
continue;
}
this.state = ParseState.Text;
this.PushNodeStart(HtmlNodeType.Text, this.cuurrentindex);
continue;
}
break;
case ParseState.QuotedAttributeValue:
if (this.currentchar == lastquote)
{
this.PushAttributeValueEnd(this.cuurrentindex - 1);
this.state = ParseState.BetweenAttributes;
continue;
}
if (this.currentchar == '<')
{
if (this.cuurrentindex < this.Text.Length)
{
if (this.Text[this.cuurrentindex] == '%')
{
this.oldstate = this.state;
this.state = ParseState.ServerSideCode;
continue;
}
}
}
break;
case ParseState.Comment:
if (this.currentchar == '>')
{
if (this.fullcomment)
{
if ((this.Text[this.cuurrentindex - 2] != '-') || (this.Text[this.cuurrentindex - 3] != '-'))
{
continue;
}
}
if (!this.PushNodeEnd(this.cuurrentindex, false))
{
// stop parsing
this.cuurrentindex = this.Text.Length;
break;
}
this.state = ParseState.Text;
this.PushNodeStart(HtmlNodeType.Text, this.cuurrentindex);
continue;
}
break;
case ParseState.ServerSideCode:
if (this.currentchar == '%')
{
if (this.cuurrentindex < this.Text.Length)
{
if (this.Text[this.cuurrentindex] == '>')
{
switch (this.oldstate)
{
case ParseState.AttributeAfterEquals:
this.state = ParseState.AttributeValue;
break;
case ParseState.BetweenAttributes:
this.PushAttributeNameEnd(this.cuurrentindex + 1);
this.state = ParseState.BetweenAttributes;
break;
default:
this.state = this.oldstate;
break;
}
this.IncrementPosition();
}
}
}
break;
case ParseState.PcData:
// look for </tag + 1 char
// check buffer end
if ((this.currentnode.NameLength + 3) <= (this.Text.Length - (this.cuurrentindex - 1)))
{
if (string.Compare(
this.Text.Substring(this.cuurrentindex - 1, this.currentnode.NameLength + 2),
"</" + this.currentnode.NodeName,
StringComparison.OrdinalIgnoreCase) == 0)
{
int c = this.Text[this.cuurrentindex - 1 + 2 + this.currentnode.NodeName.Length];
if ((c == '>') || IsWhiteSpace(c))
{
// add the script as a text node
HtmlNode script = this.CreateNode(
HtmlNodeType.Text,
this.currentnode.OuterStartIndex + this.currentnode.OuterLength);
script.OuterLength = this.cuurrentindex - 1 - script.OuterStartIndex;
this.currentnode.AppendChild(script);
this.PushNodeStart(HtmlNodeType.Element, this.cuurrentindex - 1);
this.PushNodeNameStart(false, this.cuurrentindex - 1 + 2);
this.state = ParseState.Tag;
this.IncrementPosition();
}
}
}
break;
}
}
// finish the current work
if (this.currentnode.NameStartIndex > 0)
{
this.PushNodeNameEnd(this.cuurrentindex);
}
this.PushNodeEnd(this.cuurrentindex, false);
// we don't need this anymore
this.LastNodes.Clear();
}
