using System;

namespace Spider
{
	/// <summary>
	/// Summary description for ParseHTML.
	/// 
	/// This spider is copyright 2003 by Jeff Heaton. However, it is
	/// released under a Limited GNU Public License (LGPL). You may 
	/// use it freely in your own programs. For the latest version visit
	/// http://www.jeffheaton.com.
	///
	/// </summary>

	public class ParseHTML:Parse 
	{		public AttributeList GetTag()		{			AttributeList tag = new AttributeList();			tag.Name = m_tag;			foreach(Attribute x in List)			{				tag.Add((Attribute)x.Clone());			}			return tag;		}		public String BuildTag()		{			String buffer="<";			buffer+=m_tag;			int i=0;			while ( this[i]!=null ) 
			{// has attributes				buffer+=" ";				if ( this[i].Value == null ) 
				{					if ( this[i].Delim!=0 )						buffer+=this[i].Delim;					buffer+=this[i].Name;					if ( this[i].Delim!=0 )						buffer+=this[i].Delim;				} 
				else 
				{					buffer+=this[i].Name;					if ( this[i].Value!=null ) 
					{						buffer+="=";						if ( this[i].Delim!=0 )							buffer+=this[i].Delim;						buffer+=this[i].Value;						if ( this[i].Delim!=0 )							buffer+=this[i].Delim;					}				}				i++;			}			buffer+=">";			return buffer;		}		protected void ParseTag()		{			m_tag="";			Clear();			// Is it a comment?			if ( (GetCurrentChar()=='!') &&				(GetCurrentChar(1)=='-')&&				(GetCurrentChar(2)=='-') ) 
			{				while ( !Eof() ) 
				{					if ( (GetCurrentChar()=='-') &&						(GetCurrentChar(1)=='-')&&						(GetCurrentChar(2)=='>') )						break;					if ( GetCurrentChar()!='\r' )						m_tag+=GetCurrentChar();					Advance();				}				m_tag+="--";				Advance();				Advance();				Advance();				ParseDelim = (char)0;				return;			}			// Find the tag name			while ( !Eof() ) 
			{				if ( IsWhiteSpace(GetCurrentChar()) || (GetCurrentChar()=='>') )					break;				m_tag+=GetCurrentChar();				Advance();			}			EatWhiteSpace();			// Get the attributes			while ( GetCurrentChar()!='>' ) 
			{				ParseName = "";				ParseValue = "";				ParseDelim = (char)0;				ParseAttributeName();				if ( GetCurrentChar()=='>' ) 
				{					AddAttribute();					break;				}				// Get the value(if any)				ParseAttributeValue();				AddAttribute();			}			Advance();		}		public char Parse()		{			if( GetCurrentChar()=='<' ) 
			{				Advance();				char ch=char.ToUpper(GetCurrentChar());				if ( (ch>='A') && (ch<='Z') || (ch=='!') || (ch=='/') ) 
				{					ParseTag();					return (char)0;				} 
				else return(AdvanceCurrentChar());			} 
			else return(AdvanceCurrentChar());		}
	}
}