/*
    Copyright (C) 2005-2009  Michel de Boer <michel@twinklephone.com>

    This program 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 2 of the License, or
    (at your option) any later version.

    This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
*/

%{
#include <string>
#include "sdp_parse_ctrl.h"
#include "sdp_parser.h"
#include "audits/memman.h"

using namespace std;
%}

%option noyywrap
%option stack

DIGIT		[0-9]
ALPHA		[a-zA-Z]
ALNUM		[a-zA-Z0-9]
TOKEN_SYM	[[:alnum:]\-\.!%\*_\+\'~]
SAFE_SYM	[[:alnum:]'`\-\.\/:\?\"#\$&\*;=@\[\]\^_\{|\}\+~\"]

%x C_NUM
%x C_LINE
%x C_SAFE

%%
	switch (t_sdp_parser::context) {
	case t_sdp_parser::X_NUM:	BEGIN(C_NUM); break;
	case t_sdp_parser::X_LINE:	BEGIN(C_LINE); break;
	case t_sdp_parser::X_SAFE:	BEGIN(C_SAFE); break;
	default:			BEGIN(INITIAL);
	}

	/* SDP lines */
^v=		{ return T_LINE_VERSION; }
^o=		{ return T_LINE_ORIGIN; }
^s=		{ return T_LINE_SESSION_NAME; }
^c=		{ return T_LINE_CONNECTION; }
^a=		{ return T_LINE_ATTRIBUTE; }
^m=		{ return T_LINE_MEDIA; }
^{ALPHA}=	{ return T_LINE_UNKNOWN; }

	/* Token as define in RFC 3261 */
{TOKEN_SYM}+ 	{ yysdplval.yysdpt_str = new string(yysdptext);
		  MEMMAN_NEW(yysdplval.yysdpt_str);
		  return T_TOKEN; }

	/* End of line */
\r\n		{ return T_CRLF; }
\n		{ return T_CRLF; }

[[:blank:]]	/* Skip white space */

	/* Single character token */
.		{ return yysdptext[0]; }

	/* Number */
<C_NUM>{DIGIT}+		{ yysdplval.yysdpt_int = atoi(yysdptext);
			  return T_NUM; }
<C_NUM>[[:blank:]]	/* Skip white space */
<C_NUM>.		{ return yysdptext[0]; }
<C_NUM>\r\n		{ return T_CRLF; }
<C_NUM>\n		{ return T_CRLF; }

	/* Safe */
<C_SAFE>{SAFE_SYM}+	{ yysdplval.yysdpt_str = new string(yysdptext);
			  MEMMAN_NEW(yysdplval.yysdpt_str);
			  return T_SAFE; }
<C_SAFE>[[:blank:]]	/* Skip white space */
<C_SAFE>.		{ return yysdptext[0]; }
<C_SAFE>\r\n		{ return T_CRLF; }
<C_SAFE>\n		{ return T_CRLF; }

	/* Get all text till end of line */
<C_LINE>[^\r\n]+	{ yysdplval.yysdpt_str = new string(yysdptext);
			  MEMMAN_NEW(yysdplval.yysdpt_str);
			  return T_LINE; }
<C_LINE>\r\n		{ return T_CRLF; }
<C_LINE>\n		{ return T_CRLF; }
<C_LINE>\r		{ return T_CRLF; }