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<?php
/**
* @copyright Copyright (c) 2019 Arthur Schiwon <blizzz@arthur-schiwon.de>
*
* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
* @author Julius Härtl <jus@bitgrid.net>
*
* @license GNU AGPL version 3 or any later version
*
* 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, either version 3 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 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 <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Files_External\Config;
/**
* Trait SimpleSubstitutionTrait
*
* @package OCA\Files_External\Config
* @since 16.0.0
*/
trait SimpleSubstitutionTrait {
/**
* @var string the placeholder without $ prefix
* @since 16.0.0
*/
protected $placeholder;
/** @var string */
protected $sanitizedPlaceholder;
/**
* @param mixed $optionValue
* @param string $replacement
* @return mixed
* @since 16.0.0
*/
private function processInput($optionValue, string $replacement) {
$this->checkPlaceholder();
if (is_array($optionValue)) {
foreach ($optionValue as &$value) {
$value = $this->substituteIfString($value, $replacement);
}
} else {
$optionValue = $this->substituteIfString($optionValue, $replacement);
}
return $optionValue;
}
/**
* @throws \RuntimeException
*/
protected function checkPlaceholder(): void {
$this->sanitizedPlaceholder = trim(strtolower($this->placeholder));
if (!(bool)\preg_match('/^[a-z0-9]*$/', $this->sanitizedPlaceholder)) {
throw new \RuntimeException(sprintf(
'Invalid placeholder %s, only [a-z0-9] are allowed', $this->sanitizedPlaceholder
));
}
if ($this->sanitizedPlaceholder === '') {
throw new \RuntimeException('Invalid empty placeholder');
}
}
/**
* @param mixed $value
* @param string $replacement
* @return mixed
*/
protected function substituteIfString($value, string $replacement) {
if (is_string($value)) {
return str_ireplace('$' . $this->sanitizedPlaceholder, $replacement, $value);
}
return $value;
}
}
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