/*
 *
 * @APPLE_LICENSE_HEADER_START@
 *
 * Copyright (c) 1999-2001 Apple Computer, Inc.  All Rights Reserved. The
 * contents of this file constitute Original Code as defined in and are
 * subject to the Apple Public Source License Version 1.2 (the 'License').
 * You may not use this file except in compliance with the License.  Please
 * obtain a copy of the License at http://www.apple.com/publicsource and
 * read it before using this file.
 *
 * This Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.  Please
 * see the License for the specific language governing rights and
 * limitations under the License.
 *
 *
 * @APPLE_LICENSE_HEADER_END@
 *
 */
 /*
	File:		QueryParamList.cpp

	Contains:	Implementation of QueryParamList class 
	
	The QueryParamList class is used to parse and build a searchable list
	of name/value pairs from a RFC1808 QueryString that has been encoded
	using the html 'form encoding' rules.
					
*/

#ifndef __query_param_list__
#define __query_param_list__


//#include "QueryParamList.h"

#include "PLDoubleLinkedList.h"
#include "StrPtrLen.h"


class QueryParamListElement {

	public:
		QueryParamListElement( char* name, char* value )
		{
			mName 	= name;
			mValue 	= value;
						
		}		
		
		virtual ~QueryParamListElement() 
		{ 
			delete [] mName;
			delete [] mValue;
		}
		
		char 	*mName;
		char 	*mValue;

};


class QueryParamList
{
	public:
		QueryParamList( char* queryString );
		QueryParamList( StrPtrLen* querySPL );
		~QueryParamList() { delete fNameValueQueryParamlist; }
		
		void AddNameValuePairToList( char* name, char* value );
		const char *DoFindCGIValueForParam( char *name );
		void PrintAll( char *idString );
		
	protected:
		void			BulidList( StrPtrLen* querySPL );
		void 			DecodeArg( char *ioCodedPtr );
		enum { 
			// escaping states
			  kLastWasText
			, kPctEscape
 			, kRcvHexDigitOne
		};
		
		Bool16 			IsHex( char c );
			
		PLDoubleLinkedList<QueryParamListElement>	*fNameValueQueryParamlist;
	

};





#endif