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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;
- use Symfony\Component\Yaml\Tag\TaggedValue;
- /**
- * Dumper dumps PHP variables to YAML strings.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @final
- */
- class Dumper
- {
- /**
- * The amount of spaces to use for indentation of nested nodes.
- *
- * @var int
- */
- protected $indentation;
- public function __construct(int $indentation = 4)
- {
- if ($indentation < 1) {
- throw new \InvalidArgumentException('The indentation must be greater than zero.');
- }
- $this->indentation = $indentation;
- }
- /**
- * 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, int $inline = 0, int $indent = 0, int $flags = 0): string
- {
- $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($input) && !$input instanceof TaggedValue && $dumpObjectAsInlineMap) || empty($input)) {
- $output .= $prefix.Inline::dump($input, $flags);
- } else {
- $dumpAsMap = Inline::isHash($input);
- foreach ($input as $key => $value) {
- if ('' !== $output && "\n" !== $output[-1]) {
- $output .= "\n";
- }
- if (Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK & $flags && \is_string($value) && false !== strpos($value, "\n") && false === strpos($value, "\r")) {
- // If the first line starts with a space character, the spec requires a blockIndicationIndicator
- // http://www.yaml.org/spec/1.2/spec.html#id2793979
- $blockIndentationIndicator = (' ' === substr($value, 0, 1)) ? (string) $this->indentation : '';
- if (isset($value[-2]) && "\n" === $value[-2] && "\n" === $value[-1]) {
- $blockChompingIndicator = '+';
- } elseif ("\n" === $value[-1]) {
- $blockChompingIndicator = '';
- } else {
- $blockChompingIndicator = '-';
- }
- $output .= sprintf('%s%s%s |%s%s', $prefix, $dumpAsMap ? Inline::dump($key, $flags).':' : '-', '', $blockIndentationIndicator, $blockChompingIndicator);
- foreach (explode("\n", $value) as $row) {
- if ('' === $row) {
- $output .= "\n";
- } else {
- $output .= sprintf("\n%s%s%s", $prefix, str_repeat(' ', $this->indentation), $row);
- }
- }
- continue;
- }
- if ($value instanceof TaggedValue) {
- $output .= sprintf('%s%s !%s', $prefix, $dumpAsMap ? Inline::dump($key, $flags).':' : '-', $value->getTag());
- if (Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK & $flags && \is_string($value->getValue()) && false !== strpos($value->getValue(), "\n") && false === strpos($value->getValue(), "\r\n")) {
- // If the first line starts with a space character, the spec requires a blockIndicationIndicator
- // http://www.yaml.org/spec/1.2/spec.html#id2793979
- $blockIndentationIndicator = (' ' === substr($value->getValue(), 0, 1)) ? (string) $this->indentation : '';
- $output .= sprintf(' |%s', $blockIndentationIndicator);
- foreach (explode("\n", $value->getValue()) as $row) {
- $output .= sprintf("\n%s%s%s", $prefix, str_repeat(' ', $this->indentation), $row);
- }
- continue;
- }
- if ($inline - 1 <= 0 || null === $value->getValue() || is_scalar($value->getValue())) {
- $output .= ' '.$this->dump($value->getValue(), $inline - 1, 0, $flags)."\n";
- } else {
- $output .= "\n";
- $output .= $this->dump($value->getValue(), $inline - 1, $dumpAsMap ? $indent + $this->indentation : $indent + 2, $flags);
- }
- 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;
- }
- }
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