Zabbix

<?php

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** 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 Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

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

**/

​

​

/**

 *  A parser for function macros like "{{$MACRO}.func()}".

 */

class CUserMacroFunctionParser extends CParser {

​

    /**

     * Parser for user macros.

     *

     * @var CUserMacroParser

     */

    private $user_macro_parser;

​

    /**

     * Parser for trigger functions.

     *

     * @var C10FunctionParser

     */

    private $function_parser;

​

    public function __construct() {

        $this->user_macro_parser = new CUserMacroParser();

        $this->function_parser = new C10FunctionParser();

    }

​

    /**

     * @param string $source

     * @param int    $pos

     *

     * @return int

     */

    public function parse($source, $pos = 0) {

        $this->length = 0;

        $this->match = '';

​

        $p = $pos;

​

        if (!isset($source[$p]) || $source[$p] !== '{') {

            return self::PARSE_FAIL;

        }

        $p++;

​

        if ($this->user_macro_parser->parse($source, $p) == CParser::PARSE_FAIL) {

            return self::PARSE_FAIL;

        }

        $p += $this->user_macro_parser->getLength();

​

        if (!isset($source[$p]) || $source[$p] !== '.') {

            return self::PARSE_FAIL;

        }

        $p++;

​

        if ($this->function_parser->parse($source, $p) == CParser::PARSE_FAIL) {

            return self::PARSE_FAIL;

        }

        $p += $this->function_parser->getLength();

​

        if (!isset($source[$p]) || $source[$p] !== '}') {

            return self::PARSE_FAIL;

        }

        $p++;

​

        $this->length = $p - $pos;

        $this->match = substr($source, $pos, $this->length);

​

        return (isset($source[$pos + $this->length]) ? self::PARSE_SUCCESS_CONT : self::PARSE_SUCCESS);

    }

​

    /**

     * Returns macro parser.

     *

     * @return string

     */

    public function getUserMacroParser() {

        return $this->user_macro_parser;

    }