//===== Hercules Plugin ======================================
//= *regexp Script Command
//===== By: ==================================================
//= AnnieRuru
//===== Current Version: =====================================
//= 1.0
//===== Compatible With: ===================================== 
//= Hercules 2014-03-12
//===== Description: =========================================
//= check the string match with regular expression
//===== Topic ================================================
//= none
//===== Additional Comments: =================================  
//= rip off from rathena *preg_match
//============================================================

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "../map/npc.h"
#include "../map/script.h"
#include "../common/HPMi.h"
#include "../../3rdparty/pcre/include/pcre.h"

#include "../common/HPMDataCheck.h" // should always be the last file included! (if you don't make it last, it'll intentionally break compile time)

HPExport struct hplugin_info pinfo = {
	"regexp",		// Plugin name
	SERVER_TYPE_MAP,// Which server types this plugin works with?
	"0.1",			// Plugin version
	HPM_VERSION,	// HPM Version (don't change, macro is automatically updated)
};

BUILDIN(regexp) {
//#ifdef PCRE_SUPPORT
	pcre *re;
	pcre_extra *pcreExtra;
	const char *error;
	int erroffset, r, offset = 0;
	int subStrVec[30];

	const char* pattern = script_getstr(st,2);
	const char* subject = script_getstr(st,3);
	if (script_hasdata(st,4))
		offset = script_getnum(st,4);

	re = libpcre->compile(pattern, 0, &error, &erroffset, NULL);
	pcreExtra = libpcre->study(re, 0, &error);

	r = libpcre->exec(re, pcreExtra, subject, (int)strlen(subject), offset, 0, subStrVec, 30);

	libpcre->free(re);
	if (pcreExtra != NULL)
		libpcre->free(pcreExtra);

	if (r < 0)
		script_pushint(st,0);
	else
		script_pushint(st,(r > 0) ? r : 30 / 3);

	return true;
//#else
	ShowError( "buildin_regexp: Cannot run because PCRE library are disabled.\n" );
	script_pushint(st,0);
	return false;
//#endif
}

HPExport void plugin_init (void) {
	script = GET_SYMBOL("script");
	libpcre = GET_SYMBOL("libpcre");

	addScriptCommand( "regexp", "ss?", regexp );
}