protected override int InnerParse(ParseArgs args)
{
var scanner = args.Scanner;
var pos = scanner.Position;
int length = 0;
int ch;
ch = scanner.ReadChar();
length++;
if (ch == '<')
{
ch = scanner.ReadChar();
length++;
if (ch == '!')
{
length = 7;
// read comment
if (scanner.ReadString("--", true))
{
while (!scanner.ReadString("-->", true))
{
if (scanner.ReadChar() == -1)
{
scanner.Position = pos;
return(-1);
}
length++;
}
return(length);
}
scanner.Position = pos;
return(-1);
}
tagNameBuilder.Clear();
var first = true;
while (ch != -1 && char.IsLetter((char)ch))
{
if (first && !char.IsLetter((char)ch))
{
scanner.Position = pos;
return(-1);
}
first = false;
tagNameBuilder.Append((char)ch);
ch = scanner.ReadChar();
length++;
}
if (ch == ' ' || ch == '>' || ch == '/')
{
var isVoid = voidTags.Contains(tagNameBuilder.ToString());
int prev = ch;
while (ch != '>' && ch != -1)
{
prev = ch;
if (ch == '\'' || ch == '"')
{
var quote = ch;
ch = scanner.ReadChar();
length++;
while (ch != quote && ch != -1)
{
if (ch == '\n')
{
scanner.Position = pos;
return(-1);
}
ch = scanner.ReadChar();
length++;
}
}
ch = scanner.ReadChar();
length++;
}
if (ch != '>')
{
scanner.Position = pos;
return(-1);
}
if (isVoid || prev == '/') // self closing, or a tag with no content
{
return(length);
}
// now, read till the end tag
if (MatchContent && Name != null)
{
args.Push();
}
var start = pos + length;
var contentLength = 0;
tagNameBuilder.Insert(0, "</");
tagNameBuilder.Append(">");
var tagName = tagNameBuilder.ToString();
while (!scanner.ReadString(tagName, true))
{
ch = scanner.Peek();
if (ch == '<')
{
if (MatchContent && contentLength > 0)
{
args.AddMatch(this, start, contentLength, "content");
}
var inner = Parse(args);
if (inner < 0)
{
scanner.Position = pos;
return(-1);
}
length += inner;
start = pos + length;
contentLength = 0;
continue;
}
if (scanner.Advance(1) >= 0)
{
length++;
contentLength++;
}
else
{
scanner.Position = pos;
return(-1);
}
}
length += tagName.Length;
if (MatchContent)
{
if (contentLength > 0)
{
args.AddMatch(this, start, contentLength, "content");
}
if (Name != null)
{
args.PopMatch(this, pos, length);
}
}
return(length);
}
}
scanner.Position = pos;
return(-1);
}
protected override int InnerParse(ParseArgs args)
{
var scanner = args.Scanner;
var pos = scanner.Position;
int length = 0;
int ch;
ch = scanner.ReadChar();
length++;
if (ch == '<')
{
ch = scanner.ReadChar();
length++;
if (ch == '!')
{
length = 7;
// read comment
if (scanner.ReadString("--", true))
{
while (!scanner.ReadString("-->", true))
{
if (scanner.ReadChar() == -1)
{
scanner.Position = pos;
return -1;
}
length++;
}
return length;
}
scanner.Position = pos;
return -1;
}
tagNameBuilder.Clear();
var first = true;
while (ch != -1 && char.IsLetter((char)ch))
{
if (first && !char.IsLetter((char)ch))
{
scanner.Position = pos;
return -1;
}
first = false;
tagNameBuilder.Append((char)ch);
ch = scanner.ReadChar();
length++;
}
if (ch == ' ' || ch == '>' || ch == '/')
{
var isVoid = voidTags.Contains(tagNameBuilder.ToString());
int prev = ch;
while (ch != '>' && ch != -1)
{
prev = ch;
if (ch == '\'' || ch == '"')
{
var quote = ch;
ch = scanner.ReadChar();
length++;
while (ch != quote && ch != -1)
{
if (ch == '\n')
{
scanner.Position = pos;
return -1;
}
ch = scanner.ReadChar();
length++;
}
}
ch = scanner.ReadChar();
length++;
}
if (ch != '>')
{
scanner.Position = pos;
return -1;
}
if (isVoid || prev == '/') // self closing, or a tag with no content
{
return length;
}
// now, read till the end tag
if (MatchContent && Name != null)
args.Push();
var start = pos + length;
var contentLength = 0;
tagNameBuilder.Insert(0, "</");
tagNameBuilder.Append(">");
var tagName = tagNameBuilder.ToString();
while (!scanner.ReadString(tagName, true))
{
ch = scanner.Peek();
if (ch == '<')
{
if (MatchContent && contentLength > 0)
{
args.AddMatch(this, start, contentLength, "content");
}
var inner = Parse(args);
if (inner < 0)
{
scanner.Position = pos;
return -1;
}
length += inner;
start = pos + length;
contentLength = 0;
continue;
}
if (scanner.Advance(1) >= 0)
{
length++;
contentLength++;
}
else
{
scanner.Position = pos;
return -1;
}
}
length += tagName.Length;
if (MatchContent)
{
if (contentLength > 0)
{
args.AddMatch(this, start, contentLength, "content");
}
if (Name != null)
args.PopMatch(this, pos, length);
}
return length;
}
}
scanner.Position = pos;
return -1;
}
