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126 lines
5.1 KiB
126 lines
5.1 KiB
1 year ago
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\Yaml;
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use Symfony\Component\Yaml\Tag\TaggedValue;
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/**
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* Dumper dumps PHP variables to YAML strings.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*
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* @final
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*/
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class Dumper
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{
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/**
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* The amount of spaces to use for indentation of nested nodes.
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*
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* @var int
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*/
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protected $indentation;
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public function __construct(int $indentation = 4)
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{
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if ($indentation < 1) {
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throw new \InvalidArgumentException('The indentation must be greater than zero.');
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}
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$this->indentation = $indentation;
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}
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/**
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* Dumps a PHP value to YAML.
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*
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* @param mixed $input The PHP value
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* @param int $inline The level where you switch to inline YAML
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* @param int $indent The level of indentation (used internally)
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* @param int $flags A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
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*
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* @return string The YAML representation of the PHP value
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*/
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public function dump($input, int $inline = 0, int $indent = 0, int $flags = 0): string
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{
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$output = '';
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$prefix = $indent ? str_repeat(' ', $indent) : '';
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$dumpObjectAsInlineMap = true;
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if (Yaml::DUMP_OBJECT_AS_MAP & $flags && ($input instanceof \ArrayObject || $input instanceof \stdClass)) {
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$dumpObjectAsInlineMap = empty((array) $input);
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}
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if ($inline <= 0 || (!\is_array($input) && !$input instanceof TaggedValue && $dumpObjectAsInlineMap) || empty($input)) {
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$output .= $prefix.Inline::dump($input, $flags);
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} else {
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$dumpAsMap = Inline::isHash($input);
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foreach ($input as $key => $value) {
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if ($inline >= 1 && Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK & $flags && \is_string($value) && false !== strpos($value, "\n") && false === strpos($value, "\r")) {
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// If the first line starts with a space character, the spec requires a blockIndicationIndicator
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// http://www.yaml.org/spec/1.2/spec.html#id2793979
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$blockIndentationIndicator = (' ' === substr($value, 0, 1)) ? (string) $this->indentation : '';
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$output .= sprintf("%s%s%s |%s\n", $prefix, $dumpAsMap ? Inline::dump($key, $flags).':' : '-', '', $blockIndentationIndicator);
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foreach (explode("\n", $value) as $row) {
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$output .= sprintf("%s%s%s\n", $prefix, str_repeat(' ', $this->indentation), $row);
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}
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continue;
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}
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if ($value instanceof TaggedValue) {
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$output .= sprintf('%s%s !%s', $prefix, $dumpAsMap ? Inline::dump($key, $flags).':' : '-', $value->getTag());
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if ($inline >= 1 && Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK & $flags && \is_string($value->getValue()) && false !== strpos($value->getValue(), "\n") && false === strpos($value->getValue(), "\r\n")) {
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// If the first line starts with a space character, the spec requires a blockIndicationIndicator
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// http://www.yaml.org/spec/1.2/spec.html#id2793979
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$blockIndentationIndicator = (' ' === substr($value->getValue(), 0, 1)) ? (string) $this->indentation : '';
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$output .= sprintf(" |%s\n", $blockIndentationIndicator);
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foreach (explode("\n", $value->getValue()) as $row) {
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$output .= sprintf("%s%s%s\n", $prefix, str_repeat(' ', $this->indentation), $row);
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}
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continue;
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}
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if ($inline - 1 <= 0 || null === $value->getValue() || is_scalar($value->getValue())) {
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$output .= ' '.$this->dump($value->getValue(), $inline - 1, 0, $flags)."\n";
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} else {
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$output .= "\n";
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$output .= $this->dump($value->getValue(), $inline - 1, $dumpAsMap ? $indent + $this->indentation : $indent + 2, $flags);
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}
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continue;
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}
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$dumpObjectAsInlineMap = true;
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if (Yaml::DUMP_OBJECT_AS_MAP & $flags && ($value instanceof \ArrayObject || $value instanceof \stdClass)) {
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$dumpObjectAsInlineMap = empty((array) $value);
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}
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$willBeInlined = $inline - 1 <= 0 || !\is_array($value) && $dumpObjectAsInlineMap || empty($value);
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$output .= sprintf('%s%s%s%s',
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$prefix,
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$dumpAsMap ? Inline::dump($key, $flags).':' : '-',
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$willBeInlined ? ' ' : "\n",
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$this->dump($value, $inline - 1, $willBeInlined ? 0 : $indent + $this->indentation, $flags)
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).($willBeInlined ? "\n" : '');
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}
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}
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return $output;
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}
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}
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