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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;
/**
* @param int $indentation
*/
public function __construct($indentation = 4)
{
if ($indentation < 1) {
throw new \InvalidArgumentException('The indentation must be greater than zero.');
}
$this->indentation = $indentation;
}
/**
* Sets the indentation.
*
* @param int $num The amount of spaces to use for indentation of nested nodes
*
* @deprecated since version 3.1, to be removed in 4.0. Pass the indentation to the constructor instead.
*/
public function setIndentation($num)
{
@trigger_error('The '.__METHOD__.' method is deprecated since Symfony 3.1 and will be removed in 4.0. Pass the indentation to the constructor instead.', E_USER_DEPRECATED);
$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 int $flags A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
*
* @return string The YAML representation of the PHP value
*/
public function dump($input, $inline = 0, $indent = 0, $flags = 0)
{
if (is_bool($flags)) {
@trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
if ($flags) {
$flags = Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE;
} else {
$flags = 0;
}
}
if (func_num_args() >= 5) {
@trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::DUMP_OBJECT flag instead.', E_USER_DEPRECATED);
if (func_get_arg(4)) {
$flags |= Yaml::DUMP_OBJECT;
}
}
$output = '';
$prefix = $indent ? str_repeat(' ', $indent) : '';
$dumpObjectAsInlineMap = true;
if (Yaml::DUMP_OBJECT_AS_MAP & $flags && ($input instanceof \ArrayObject || $input instanceof \stdClass)) {
$dumpObjectAsInlineMap = empty((array) $input);
}
if ($inline <= 0 || (!is_array($input) && $dumpObjectAsInlineMap) || empty($input)) {
$output .= $prefix.Inline::dump($input, $flags);
} else {
$dumpAsMap = Inline::isHash($input);
foreach ($input as $key => $value) {
if ($inline >= 1 && Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK & $flags && is_string($value) && false !== strpos($value, "\n") && false === strpos($value, "\r\n")) {
$output .= sprintf("%s%s%s |\n", $prefix, $dumpAsMap ? Inline::dump($key, $flags).':' : '-', '');
foreach (preg_split('/\n|\r\n/', $value) as $row) {
$output .= sprintf("%s%s%s\n", $prefix, str_repeat(' ', $this->indentation), $row);
}
continue;
}
$dumpObjectAsInlineMap = true;
if (Yaml::DUMP_OBJECT_AS_MAP & $flags && ($value instanceof \ArrayObject || $value instanceof \stdClass)) {
$dumpObjectAsInlineMap = empty((array) $value);
}
$willBeInlined = $inline - 1 <= 0 || !is_array($value) && $dumpObjectAsInlineMap || empty($value);
$output .= sprintf('%s%s%s%s',
$prefix,
$dumpAsMap ? Inline::dump($key, $flags).':' : '-',
$willBeInlined ? ' ' : "\n",
$this->dump($value, $inline - 1, $willBeInlined ? 0 : $indent + $this->indentation, $flags)
).($willBeInlined ? "\n" : '');
}
}
return $output;
}
}