/*
 * Copyright (C) 2010-2011 Mamadou Diop.
 *
 * Contact: Mamadou Diop <diopmamadou(at)doubango[dot]org>
 *	
 * This file is part of Open Source Doubango Framework.
 *
 * DOUBANGO is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *	
 * DOUBANGO is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *	
 * You should have received a copy of the GNU General Public License
 * along with DOUBANGO.
 *
 */
 
 /**@file tsip_header_Require.c
  * @brief SIP Require header.
  *
  * @author Mamadou Diop <diopmamadou(at)doubango[dot]org>
  *
 
  */
 #include "tinysip/headers/tsip_header_Require.h"
 
 #include "tinysip/parsers/tsip_parser_uri.h"
 
 #include "tsk_debug.h"
 #include "tsk_memory.h"
 
 #include <string.h>
 
 
 
 /***********************************
 *	Ragel state machine.
 */
 %%{
 	machine tsip_machine_parser_header_Require;
 
 	# Includes
 	include tsip_machine_utils "./ragel/tsip_machine_utils.rl";
 	
 	action tag{
 		tag_start = p;
 	}
 	
 	action parse_option{
 		TSK_PARSER_ADD_STRING(hdr_require->options);
 	}
 
 	action eob{
 	}
 	
 	Require = "Require"i HCOLON option_tag>tag %parse_option ( COMMA option_tag>tag %parse_option )*;
 	
 	# Entry point
 	main := Require :>CRLF @eob;
 
 }%%
 
 tsip_header_Require_t* tsip_header_Require_create(const char* option)
 {
 	return tsk_object_new(TSIP_HEADER_REQUIRE_VA_ARGS(option));
 }
 
 tsip_header_Require_t* tsip_header_Require_create_null()
 {
 	return tsip_header_Require_create(tsk_null);
 }
 
 int tsip_header_Require_serialize(const tsip_header_t* header, tsk_buffer_t* output)
 {
 	if(header){
 		const tsip_header_Require_t *Require = (const tsip_header_Require_t *)header;
 		tsk_list_item_t *item;
 		tsk_string_t *str;
 		int ret = 0;
 
 		tsk_list_foreach(item, Require->options){
 			str = item->data;
 			if(item == Require->options->head){
 				ret = tsk_buffer_append(output, str->value, tsk_strlen(str->value));
 			}
 			else{
 				ret = tsk_buffer_append_2(output, ",%s", str->value);
 			}
 		}
 
 		return ret;
 	}
 
 	return -1;
 }
 
 tsip_header_Require_t *tsip_header_Require_parse(const char *data, tsk_size_t size)
 {
 	int cs = 0;
 	const char *p = data;
 	const char *pe = p + size;
 	const char *eof = pe;
 	tsip_header_Require_t *hdr_require = tsip_header_Require_create_null();
 	
 	const char *tag_start = tsk_null;
 
 	%%write data;
 	(void)(eof);
 	(void)(tsip_machine_parser_header_Require_first_final);
 	(void)(tsip_machine_parser_header_Require_error);
 	(void)(tsip_machine_parser_header_Require_en_main);
 	%%write init;
 	%%write exec;
 	
 	if( cs < %%{ write first_final; }%% ){
 		TSK_DEBUG_ERROR("Failed to parse 'Require' header.");
 		TSK_OBJECT_SAFE_FREE(hdr_require);
 	}
 	
 	return hdr_require;
 }
 
 
 
 
 
 
 
 //========================================================
 //	Require header object definition
 //
 
 static tsk_object_t* tsip_header_Require_ctor(tsk_object_t *self, va_list * app)
 {
 	tsip_header_Require_t *Require = self;
 	if(Require){
 		const char* option;
 
 		TSIP_HEADER(Require)->type = tsip_htype_Require;
 		TSIP_HEADER(Require)->serialize = tsip_header_Require_serialize;
 
 		if((option = va_arg(*app, const char*))){
 			tsk_string_t* string = tsk_string_create(option);
 			Require->options = tsk_list_create();
 
 			tsk_list_push_back_data(Require->options, ((void**) &string));
 		}
 	}
 	else{
 		TSK_DEBUG_ERROR("Failed to create new Require header.");
 	}
 	return self;
 }
 
 static tsk_object_t* tsip_header_Require_dtor(tsk_object_t *self)
 {
 	tsip_header_Require_t *Require = self;
 	if(Require){
 		TSK_OBJECT_SAFE_FREE(Require->options);
 	}
 	else{
 		TSK_DEBUG_ERROR("Null Require header.");
 	}
 
 	return self;
 }
 
 static const tsk_object_def_t tsip_header_Require_def_s = 
 {
 	sizeof(tsip_header_Require_t),
 	tsip_header_Require_ctor,
 	tsip_header_Require_dtor,
 	tsk_null
 };
 const tsk_object_def_t *tsip_header_Require_def_t = &tsip_header_Require_def_s;