176 lines
3.7 KiB
Ragel
176 lines
3.7 KiB
Ragel
/*
|
|
* Copyright (C) 2009 Mamadou Diop.
|
|
*
|
|
* Contact: Mamadou Diop <diopmamadou@yahoo.fr>
|
|
*
|
|
* 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 tsdp_header_B.c
|
|
* @brief SDP "b=" header (Bandwidth).
|
|
*
|
|
* @author Mamadou Diop <diopmamadou(at)yahoo.fr>
|
|
*
|
|
* @date Created: Iat Nov 8 16:54:58 2009 mdiop
|
|
*/
|
|
#include "tinySDP/headers/tsdp_header_B.h"
|
|
|
|
#include "tsk_debug.h"
|
|
#include "tsk_memory.h"
|
|
#include "tsk_string.h"
|
|
|
|
#include <string.h>
|
|
|
|
/***********************************
|
|
* Ragel state machine.
|
|
*/
|
|
%%{
|
|
machine tsdp_machine_parser_header_B;
|
|
|
|
# Includes
|
|
include tsdp_machine_utils "./tsdp_machine_utils.rl";
|
|
|
|
action tag{
|
|
tag_start = p;
|
|
}
|
|
|
|
action parse_bwtype{
|
|
TSK_PARSER_SET_STRING(hdr_B->bwtype);
|
|
}
|
|
|
|
action parse_bandwidth{
|
|
TSK_PARSER_SET_UINT(hdr_B->bandwidth);
|
|
}
|
|
|
|
bwtype = token>tag %parse_bwtype;
|
|
bandwidth = DIGIT+>tag %parse_bandwidth;
|
|
|
|
B = 'b' SP* "=" SP*<: bwtype ":" bandwidth;
|
|
|
|
# Entry point
|
|
main := B :>CRLF?;
|
|
|
|
}%%
|
|
|
|
int tsdp_header_B_tostring(const tsdp_header_t* header, tsk_buffer_t* output)
|
|
{
|
|
if(header)
|
|
{
|
|
const tsdp_header_B_t *B = (const tsdp_header_B_t *)header;
|
|
|
|
return tsk_buffer_appendEx(output, "%s:%u",
|
|
B->bwtype,
|
|
B->bandwidth
|
|
);
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
tsdp_header_t* tsdp_header_B_clone(const tsdp_header_t* header)
|
|
{
|
|
if(header){
|
|
const tsdp_header_B_t *B = (const tsdp_header_B_t *)header;
|
|
return TSDP_HEADER_B_CREATE(B->bwtype, B->bandwidth);
|
|
}
|
|
return tsk_null;
|
|
}
|
|
|
|
tsdp_header_B_t *tsdp_header_B_parse(const char *data, size_t size)
|
|
{
|
|
int cs = 0;
|
|
const char *p = data;
|
|
const char *pe = p + size;
|
|
const char *eof = pe;
|
|
tsdp_header_B_t *hdr_B = TSDP_HEADER_B_CREATE_NULL();
|
|
|
|
const char *tag_start;
|
|
|
|
%%write data;
|
|
%%write init;
|
|
%%write exec;
|
|
|
|
if( cs < %%{ write first_final; }%% ){
|
|
TSK_DEBUG_ERROR("Failed to parse \"b=\" header.");
|
|
TSK_OBJECT_SAFE_FREE(hdr_B);
|
|
}
|
|
|
|
return hdr_B;
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
//========================================================
|
|
// B header object definition
|
|
//
|
|
|
|
static void* tsdp_header_B_create(void *self, va_list * app)
|
|
{
|
|
tsdp_header_B_t *B = self;
|
|
if(B)
|
|
{
|
|
TSDP_HEADER(B)->type = tsdp_htype_B;
|
|
TSDP_HEADER(B)->tostring = tsdp_header_B_tostring;
|
|
TSDP_HEADER(B)->clone = tsdp_header_B_clone;
|
|
TSDP_HEADER(B)->rank = TSDP_HTYPE_B_RANK;
|
|
|
|
B->bwtype = tsk_strdup(va_arg(*app, const char*));
|
|
B->bandwidth = va_arg(*app, uint32_t);
|
|
}
|
|
else{
|
|
TSK_DEBUG_ERROR("Failed to create new B header.");
|
|
}
|
|
return self;
|
|
}
|
|
|
|
static void* tsdp_header_B_destroy(void *self)
|
|
{
|
|
tsdp_header_B_t *B = self;
|
|
if(B){
|
|
TSK_FREE(B->bwtype);
|
|
}
|
|
else{
|
|
TSK_DEBUG_ERROR("Null B header.");
|
|
}
|
|
|
|
return self;
|
|
}
|
|
static int tsdp_header_B_cmp(const tsk_object_t *obj1, const tsk_object_t *obj2)
|
|
{
|
|
if(obj1 && obj2){
|
|
return tsdp_header_rank_cmp(obj1, obj2);
|
|
}
|
|
else{
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
static const tsk_object_def_t tsdp_header_B_def_s =
|
|
{
|
|
sizeof(tsdp_header_B_t),
|
|
tsdp_header_B_create,
|
|
tsdp_header_B_destroy,
|
|
tsdp_header_B_cmp
|
|
};
|
|
|
|
const tsk_object_def_t *tsdp_header_B_def_t = &tsdp_header_B_def_s;
|