/*********************************************************************************************************
* Software License Agreement (BSD License)                                                               *
* Author: Sebastien Decugis <sdecugis@freediameter.net>							 *
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* Copyright (c) 2013, WIDE Project and NICT								 *
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/* Lex extension's configuration parser.
 *
 * The configuration file contains a default priority, and a list of peers with optional overwite priority.
 * -- see the app_test.conf.sample file for more detail.
 */

%{
#include "test_app.h"
/* Include yacc tokens definitions */
#include "ta_conf.tab.h"

/* Update the column information */
#define YY_USER_ACTION { 						\
	yylloc->first_column = yylloc->last_column + 1; 		\
	yylloc->last_column = yylloc->first_column + yyleng - 1;	\
}

/* Avoid warning with newer flex */
#define YY_NO_INPUT

%}

%option bison-bridge bison-locations
%option noyywrap
%option nounput

%%

	/* Update the line count */
\n			{
				yylloc->first_line++; 
				yylloc->last_line++; 
				yylloc->last_column=0; 
			}
	 
	/* Eat all spaces but not new lines */
([[:space:]]{-}[\n])+	;
	/* Eat all comments */
#.*$			;

	/* Recognize any integer */
[-]?[[:digit:]]+		{
				/* Convert this to an integer value */
				int ret=0;
				ret = sscanf(yytext, "%i", &yylval->integer);
				if (ret != 1) {
					/* No matching: an error occurred */
					fd_log_debug("Unable to convert the value '%s' to a valid number: %s", yytext, strerror(errno));
					return LEX_ERROR; /* trig an error in yacc parser */
					/* Maybe we could REJECT instead of failing here? */
				}
				return INTEGER;
			}

	/* Recognize quoted strings -- we do not support escaped \" in the string currently. */
\"[^\"]+\"		{
				/* Match a quoted string. Let's be very permissive. */
				yylval->string = strdup(yytext+1);
				if (!yylval->string) {
					fd_log_debug("Unable to copy the string '%s': %s", yytext, strerror(errno));
					TRACE_DEBUG(INFO, "strdup failed");
					return LEX_ERROR; /* trig an error in yacc parser */
				}
				yylval->string[strlen(yytext) - 2] = '\0';
				return QSTRING;
			}
			
	/* Recognize the tokens */	
(?i:"vendor-id")	{
				return VENDOR_ID;
			}

(?i:"appli-id")		{
				return APPLI_ID;
			}

(?i:"cmd-id")		{
				return CMD_ID;
			}

(?i:"avp-id")		{
				return AVP_ID;
			}

(?i:"long-avp-id")	{
				return LONG_AVP_ID;
			}

(?i:"long-avp-len")	{
				return LONG_AVP_LEN;
			}

(?i:"mode")		{
				return MODE;
			}

(?i:"server")		{
				yylval->integer = MODE_SERV;
				return INTEGER;
			}

(?i:"client")		{
				yylval->integer = MODE_CLI;
				return INTEGER;
			}

(?i:"both")		{
				yylval->integer = MODE_SERV | MODE_CLI;
				return INTEGER;
			}

(?i:"dest-realm")	{
				return DEST_REALM;
			}

(?i:"dest-host")	{
				return DEST_HOST;
			}

(?i:"user-name")	{
				return USER_NAME;
			}

(?i:"Signal")		{
				return SIGNAL;
			}

(?i:"Benchmark")	{
				return BENCH;
			}

			
	/* Valid single characters for yyparse */
[=;]			{ return yytext[0]; }

	/* Unrecognized sequence, if it did not match any previous pattern */
[^[:space:]"*=>;\n]+	{ 
				fd_log_debug("Unrecognized text on line %d col %d: '%s'.", yylloc->first_line, yylloc->first_column, yytext);
			 	return LEX_ERROR; 
			}

%%