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<?php
declare(strict_types=1);
namespace League\HTMLToMarkdown\Converter;
use League\HTMLToMarkdown\Coerce;
use League\HTMLToMarkdown\Configuration;
use League\HTMLToMarkdown\ConfigurationAwareInterface;
use League\HTMLToMarkdown\ElementInterface;
class ListItemConverter implements ConverterInterface, ConfigurationAwareInterface
{
/** @var Configuration */
protected $config;
/** @var string|null */
protected $listItemStyle;
public function setConfig(Configuration $config): void
{
$this->config = $config;
}
public function convert(ElementInterface $element): string
{
// If parent is an ol, use numbers, otherwise, use dashes
$listType = ($parent = $element->getParent()) ? $parent->getTagName() : 'ul';
// Add spaces to start for nested list items
$level = $element->getListItemLevel();
$value = \trim(\implode("\n" . ' ', \explode("\n", \trim($element->getValue()))));
// If list item is the first in a nested list, add a newline before it
$prefix = '';
if ($level > 0 && $element->getSiblingPosition() === 1) {
$prefix = "\n";
}
if ($listType === 'ul') {
$listItemStyle = Coerce::toString($this->config->getOption('list_item_style', '-'));
$listItemStyleAlternate = Coerce::toString($this->config->getOption('list_item_style_alternate', ''));
if (! isset($this->listItemStyle)) {
$this->listItemStyle = $listItemStyleAlternate ?: $listItemStyle;
}
if ($listItemStyleAlternate && $level === 0 && $element->getSiblingPosition() === 1) {
$this->listItemStyle = $this->listItemStyle === $listItemStyle ? $listItemStyleAlternate : $listItemStyle;
}
return $prefix . $this->listItemStyle . ' ' . $value . "\n";
}
if ($listType === 'ol' && ($parent = $element->getParent()) && ($start = \intval($parent->getAttribute('start')))) {
$number = $start + $element->getSiblingPosition() - 1;
} else {
$number = $element->getSiblingPosition();
}
return $prefix . $number . '. ' . $value . "\n";
}
/**
* @return string[]
*/
public function getSupportedTags(): array
{
return ['li'];
}
}
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