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<?php
namespace Laminas\Config\Writer;
use Laminas\Config\Exception;
use Laminas\Stdlib\ArrayUtils;
use Traversable;
use function file_put_contents;
use function is_array;
use function restore_error_handler;
use function set_error_handler;
use function sprintf;
use const E_WARNING;
use const LOCK_EX;
abstract class AbstractWriter implements WriterInterface
{
/**
* toFile(): defined by Writer interface.
*
* @see WriterInterface::toFile()
*
* @param string $filename
* @param mixed $config
* @param bool $exclusiveLock
* @return void
* @throws Exception\InvalidArgumentException
* @throws Exception\RuntimeException
*/
public function toFile($filename, $config, $exclusiveLock = true)
{
if (empty($filename)) {
throw new Exception\InvalidArgumentException('No file name specified');
}
$flags = 0;
if ($exclusiveLock) {
$flags |= LOCK_EX;
}
set_error_handler(
function ($error, $message = '') use ($filename) {
throw new Exception\RuntimeException(
sprintf('Error writing to "%s": %s', $filename, $message),
$error
);
},
E_WARNING
);
try {
file_put_contents($filename, $this->toString($config), $flags);
} catch (\Exception $e) {
restore_error_handler();
throw $e;
}
restore_error_handler();
}
/**
* toString(): defined by Writer interface.
*
* @see WriterInterface::toString()
*
* @param mixed $config
* @return string
* @throws Exception\InvalidArgumentException
*/
public function toString($config)
{
if ($config instanceof Traversable) {
$config = ArrayUtils::iteratorToArray($config);
} elseif (! is_array($config)) {
throw new Exception\InvalidArgumentException(__METHOD__ . ' expects an array or Traversable config');
}
return $this->processConfig($config);
}
/**
* @param array $config
* @return string
*/
abstract protected function processConfig(array $config);
}