/*
 * 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_Path.c
  * @brief SIP Service-Path header as per RFC 3608.
  *
  * @author Mamadou Diop <diopmamadou(at)doubango[dot]org>
  *
 
  */
 #include "tinysip/headers/tsip_header_Path.h"
 
 #include "tinysip/parsers/tsip_parser_uri.h"
 
 #include "tsk_debug.h"
 #include "tsk_memory.h"
 #include "tsk_time.h"
 
 #include <string.h>
 
 
 
 /***********************************
 *	Ragel state machine.
 */
 %%{
 	machine tsip_machine_parser_header_Path;
 
 	# Includes
 	include tsip_machine_utils "./ragel/tsip_machine_utils.rl";
 	
 	action tag{
 		tag_start = p;
 	}
 	
 	action create_path{
 		if(!curr_path){
 			curr_path = tsip_header_Path_create_null();
 		}
 	}
 
 	action parse_display_name{
 		if(curr_path){
 			TSK_PARSER_SET_STRING(curr_path->display_name);
 			tsk_strunquote(&curr_path->display_name);
 		}
 	}
 
 	action parse_uri{
 		if(curr_path && !curr_path->uri){
 			int len = (int)(p  - tag_start);
 			if(curr_path && !curr_path->uri){
 				if((curr_path->uri = tsip_uri_parse(tag_start, (tsk_size_t)len)) && curr_path->display_name){
 					curr_path->uri->display_name = tsk_strdup(curr_path->display_name);
 				}
 			}
 		}
 	}
 
 	action parse_param{
 		if(curr_path){
 			TSK_PARSER_ADD_PARAM(TSIP_HEADER_PARAMS(curr_path));
 		}
 	}
 
 	action add_path{
 		if(curr_path){
 			tsk_list_push_back_data(hdr_paths, ((void**) &curr_path));
 		}
 	}
 
 	action eob{
 	}
 
 	
 	URI = (scheme HCOLON any+)>tag %parse_uri;
 	display_name = (( token LWS )+ | quoted_string)>tag %parse_display_name;
 	my_name_addr = display_name? :>LAQUOT<: URI :>RAQUOT;
 
 	rr_param = (generic_param)>tag %parse_param;
 	
 	path_value	= 	(my_name_addr ( SEMI rr_param )*) >create_path %add_path;
 	Path	= 		"Path" HCOLON path_value (COMMA path_value)*;
 
 	# Entry point
 	main := Path :>CRLF @eob;
 
 }%%
 
 
 tsip_header_Path_t* tsip_header_Path_create(const tsip_uri_t* uri)
 {
 	return tsk_object_new(TSIP_HEADER_PATH_VA_ARGS(uri));
 }
 
 tsip_header_Path_t* tsip_header_Path_create_null()
 {
 	return tsip_header_Path_create(tsk_null);
 }
 
 int tsip_header_Path_serialize(const tsip_header_t* header, tsk_buffer_t* output)
 {
 	if(header){
 		const tsip_header_Path_t *Path = (const tsip_header_Path_t *)header;
 		int ret = 0;
 		
 		/* Uri with hacked display-name*/
 		if((ret = tsip_uri_serialize(Path->uri, tsk_true, tsk_true, output))){
 			return ret;
 		}
 		
 		return ret;
 	}
 
 	return -1;
 }
 
 tsip_header_Paths_L_t *tsip_header_Path_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_Paths_L_t *hdr_paths = tsk_list_create();
 	
 	const char *tag_start = tsk_null;
 	tsip_header_Path_t *curr_path = tsk_null;
 
 	%%write data;
 	(void)(eof);
 	(void)(tsip_machine_parser_header_Path_first_final);
 	(void)(tsip_machine_parser_header_Path_error);
 	(void)(tsip_machine_parser_header_Path_en_main);
 	%%write init;
 	%%write exec;
 	
 	if( cs < %%{ write first_final; }%% ){
 		TSK_DEBUG_ERROR("Failed to parse 'Path' header.");
 		TSK_OBJECT_SAFE_FREE(curr_path);
 		TSK_OBJECT_SAFE_FREE(hdr_paths);
 	}
 	
 	return hdr_paths;
 }
 
 
 
 
 
 //========================================================
 //	Path header object definition
 //
 
 static tsk_object_t* tsip_header_Path_ctor(tsk_object_t *self, va_list * app)
 {
 	tsip_header_Path_t *Path = self;
 	if(Path){
 		const tsip_uri_t* uri = va_arg(*app, const tsip_uri_t*);
 
 		TSIP_HEADER(Path)->type = tsip_htype_Path;
 		TSIP_HEADER(Path)->serialize = tsip_header_Path_serialize;
 		if(uri){
 			Path->uri = tsk_object_ref((void*)uri);
 		}
 	}
 	else{
 		TSK_DEBUG_ERROR("Failed to create new Path header.");
 	}
 	return self;
 }
 
 static tsk_object_t* tsip_header_Path_dtor(tsk_object_t *self)
 {
 	tsip_header_Path_t *Path = self;
 	if(Path){
 		TSK_FREE(Path->display_name);
 		TSK_OBJECT_SAFE_FREE(Path->uri);
 
 		TSK_OBJECT_SAFE_FREE(TSIP_HEADER_PARAMS(Path));
 	}
 	else{
 		TSK_DEBUG_ERROR("Null Path header.");
 	}
 
 	return self;
 }
 
 static const tsk_object_def_t tsip_header_Path_def_s = 
 {
 	sizeof(tsip_header_Path_t),
 	tsip_header_Path_ctor,
 	tsip_header_Path_dtor,
 	tsk_null
 };
 const tsk_object_def_t *tsip_header_Path_def_t = &tsip_header_Path_def_s;