/*
 *	Ivy, C interface
 *
 *	Copyright (C) 1997-2006
 *	Centre d'Études de la Navigation Aérienne
 *
 *	Bind syntax for extracting message comtent 
 *  using regexp or other 
 *
 *	Authors: François-Régis Colin <fcolin@cena.fr>
 *
 *	$Id: ivybind.h,v 1.5.2.3 2006/04/21 15:51:55 fcolin Exp $
 * 
 *	Please refer to file version.h for the
 *	copyright notice regarding this software
 */
/* Module de gestion de la syntaxe des messages Ivy */
#pragma once

#define USE_PCRE

#ifdef USE_PCRE
#define OVECSIZE 60 /* must be multiple of 3, for regexp return */
#include <pcre.h>
#else  /* we don't USE_PCRE */
#define MAX_MSG_FIELDS 200
#include "Regex.h"
#endif /* USE_PCRE */

class IvyBinding
{
public:
	/* Creation, Compilation */
	IvyBinding();
	~IvyBinding();

	/* Mise en place des Filtrages */
	static void SetFilter( int argc, const char ** argv );
	static int Filter( const char *expression );

	/* Creation, Compilation */
	bool Compile( const char *expression, int *erroffset, const char **errmessage );
	/* Execution , extraction */
	int Exec( const char * message );
	void Match( const char *message, int argnum, int *arglen, const char **arg );

private:
#ifdef USE_PCRE
	pcre *regexp;
	pcre_extra *inspect;
	int nb_match;
	int ovector[OVECSIZE];
#else  /* we don't USE_PCRE */
	regex_t regexp;						/* la regexp sous forme machine */
	regmatch_t match[MAX_MSG_FIELDS+1];	/* resultat du match */
#endif /* USE_PCRE */

};