Dumper.php
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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Yaml;
/**
* Dumper dumps PHP variables to YAML strings.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class Dumper
{
/**
* The amount of spaces to use for indentation of nested nodes.
*
* @var int
*/
protected $indentation = 4;
/**
* Sets the indentation.
*
* @param int $num The amount of spaces to use for indentation of nested nodes
*/
public function setIndentation($num)
{
if ($num < 1) {
throw new \InvalidArgumentException('The indentation must be greater than zero.');
}
$this->indentation = (int) $num;
}
/**
* Dumps a PHP value to YAML.
*
* @param mixed $input The PHP value
* @param int $inline The level where you switch to inline YAML
* @param int $indent The level of indentation (used internally)
* @param bool $exceptionOnInvalidType True if an exception must be thrown on invalid types (a PHP resource or object), false otherwise
* @param bool $objectSupport True if object support is enabled, false otherwise
*
* @return string The YAML representation of the PHP value
*/
public function dump($input, $inline = 0, $indent = 0, $exceptionOnInvalidType = false, $objectSupport = false)
{
$output = '';
$prefix = $indent ? str_repeat(' ', $indent) : '';
if ($inline <= 0 || !\is_array($input) || empty($input)) {
$output .= $prefix.Inline::dump($input, $exceptionOnInvalidType, $objectSupport);
} else {
$isAHash = Inline::isHash($input);
foreach ($input as $key => $value) {
$willBeInlined = $inline - 1 <= 0 || !\is_array($value) || empty($value);
$output .= sprintf('%s%s%s%s',
$prefix,
$isAHash ? Inline::dump($key, $exceptionOnInvalidType, $objectSupport).':' : '-',
$willBeInlined ? ' ' : "\n",
$this->dump($value, $inline - 1, $willBeInlined ? 0 : $indent + $this->indentation, $exceptionOnInvalidType, $objectSupport)
).($willBeInlined ? "\n" : '');
}
}
return $output;
}
}