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<?php declare(strict_types = 0);
/*
** Zabbix
** Copyright (C) 2001-2023 Zabbix SIA
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** 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 General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**/
use Symfony\Component\Yaml\Yaml;
/**
* Class for converting YAML data stream to PHP array.
*/
class CYamlImportReader extends CImportReader {
/**
* Convert YAML data stream to PHP array.
* Known issues:
* - Error messages coming from Symfony YAML are not translatable;
* - Symfony parser incorrectly interprets YAML as JSON;
* - Symfony parser recognizes patterns (like dates) in unquoted strings which are not supported by Zabbix;
* - Symfony parser support only one YAML document per file.
*
* @param string $string
*
* @throws ErrorException
*
* @return array
*/
public function read($string): array {
try {
$data = Yaml::parse($string);
}
catch (Exception $exception) {
throw new ErrorException($exception->getMessage());
}
if ($data === null) {
throw new ErrorException(_s('Cannot read YAML: %1$s.', _('File is empty')));
}
elseif (!is_array($data)) {
throw new ErrorException(_s('Cannot read YAML: %1$s.', _('Invalid YAML file contents')));
}
return self::trimEmptyLine($data);
}
/**
* Removes trailing empty line from multiline strings.
*
* @param array $data
*
* @return array
*/
private static function trimEmptyLine(array $data): array {
foreach ($data as &$value) {
if (is_array($value)) {
$value = self::trimEmptyLine($value);
}
else if (is_string($value) && $value !== '' && $value[strlen($value) - 1] === "\n") {
$value = substr($value, 0, -1);
}
}
unset($value);
return $data;
}
}
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