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<?php |
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namespace League\HTMLToMarkdown\Converter; |
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use League\HTMLToMarkdown\Configuration; |
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use League\HTMLToMarkdown\ConfigurationAwareInterface; |
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use League\HTMLToMarkdown\ElementInterface; |
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class ListItemConverter implements ConverterInterface, ConfigurationAwareInterface |
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{ |
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/** |
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* @var Configuration |
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*/ |
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protected $config; |
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/** |
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* @param Configuration $config |
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*/ |
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public function setConfig(Configuration $config) |
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{ |
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$this->config = $config; |
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} |
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/** |
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* @param ElementInterface $element |
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* |
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* @return string |
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*/ |
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public function convert(ElementInterface $element) |
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{ |
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// If parent is an ol, use numbers, otherwise, use dashes |
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$list_type = $element->getParent()->getTagName(); |
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$value = $this->escapeSpecialCharacters($element->getValue()); |
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// Add spaces to start for nested list items |
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$level = $element->getListItemLevel($element); |
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$prefixForParagraph = str_repeat(' ', $level + 1); |
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$value = trim(implode("\n" . $prefixForParagraph, explode("\n", trim($value)))); |
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// If list item is the first in a nested list, add a newline before it |
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$prefix = ''; |
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if ($level > 0 && $element->getSiblingPosition() === 1) { |
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$prefix = "\n"; |
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} |
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if ($list_type === 'ul') { |
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$list_item_style = $this->config->getOption('list_item_style', '-'); |
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return $prefix . $list_item_style . ' ' . $value . "\n"; |
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} |
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if ($list_type === 'ol' && $start = $element->getParent()->getAttribute('start')) { |
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$number = $start + $element->getSiblingPosition() - 1; |
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} else { |
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$number = $element->getSiblingPosition(); |
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} |
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return $prefix . $number . '. ' . $value . "\n"; |
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} |
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/** |
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* @return string[] |
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*/ |
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public function getSupportedTags() |
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{ |
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return array('li'); |
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} |
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/** |
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* @param string $line |
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* |
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* @return string |
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*/ |
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private function escapeSpecialCharacters($line) |
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{ |
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return preg_replace( |
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"/(.*)\n([ ]*)(-|\*|\+) (.*)/", |
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"$1\n$2\\\\$3 $4", |
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$line |
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); |
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} |
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} |
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thephpleague /
html-to-markdown
