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96 lines
2.6 KiB
96 lines
2.6 KiB
<?php
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/*
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** Zabbix
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** Copyright (C) 2001-2023 Zabbix SIA
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**/
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/**
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* Expression macros converter in event name field.
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*/
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class C52EventNameConverter extends C52TriggerExpressionConverter {
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public function __construct() {
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parent::__construct();
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$this->parser = new C10TriggerExpression(['host_macro' => ['{HOST.HOST}']]);
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}
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/**
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* Convert event name.
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*
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* @param string $event_name Event name to convert.
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*
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* @return string
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*/
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public function convert($event_name) {
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$expression_macros = $this->getExpressionMacros($event_name);
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krsort($expression_macros, SORT_NUMERIC);
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foreach ($expression_macros as $pos => $expression_macro) {
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if (($this->parser->parse(substr($expression_macro, 2, -1), 0)) !== CParser::PARSE_FAIL) {
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$functions = $this->parser->result->getTokensByType(
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C10TriggerExprParserResult::TOKEN_TYPE_FUNCTION_MACRO
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);
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foreach (array_reverse($functions) as $function) {
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if ($function['data']['host'] === '{HOST.HOST}' || $function['data']['host'] === '{HOST.HOST1}') {
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$function['data']['host'] = '';
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}
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[$new_expr] = $this->convertFunction($function['data'], '', '');
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$start = $pos + $function['pos'] + 2;
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$event_name = substr_replace($event_name, $new_expr, $start, strlen($function['value']));
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}
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}
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}
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return $event_name;
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}
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/**
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* Extract expression macros with position in given string.
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*
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* @param string $value The string to search in.
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*
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* @return array
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*/
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private function getExpressionMacros(string $value): array {
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$expr_macro = new C10ExpressionMacroParser();
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$expression_macros = [];
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$p = 0;
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while (isset($value[$p])) {
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if (substr($value, $p, 2) !== '{?') {
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$p++;
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continue;
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}
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if ($expr_macro->parse($value, $p) !== CParser::PARSE_FAIL) {
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$expression_macros[$p] = $expr_macro->getMatch();
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$p += $expr_macro->getLength();
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}
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else {
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$p++;
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}
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}
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return $expression_macros;
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}
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}
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