public function ReadmehelpMarkdown::convertLeadingNumberDotSpace in README Help 8

Wraps leading "NUMBER. " text lines into ordered list tag.

Parameters

string $text: The string to be filtered.

Return value

string The HTML source with ordered lists.

1 call to ReadmehelpMarkdown::convertLeadingNumberDotSpace()

ReadmehelpMarkdown::process in src/Plugin/Filter/ReadmehelpMarkdown.php

Performs the filter processing.

File

src/Plugin/Filter/ReadmehelpMarkdown.php, line 253

Class

ReadmehelpMarkdown

Provides a filter for markdown.

Namespace

Drupal\readmehelp\Plugin\Filter

Code

public function convertLeadingNumberDotSpace($text) {
  return preg_replace_callback('/(?(DEFINE)(?<emptyline>(\\n\\n)))(\\n\\d\\.\\ )(.*?)(?&emptyline)/s', function ($matches) {
    $match = '';
    if ($match = !empty($matches[0]) ? $matches[0] : '') {
      $match = preg_replace('/(^|\\n)\\d\\.\\ /s', '<LISTITEM>', $match);
      $items = '';
      foreach (explode('<LISTITEM>', $match) as $item) {
        if ($item = trim($item)) {
          $items .= "<li>{$item}</li>";
        }
      }
      $match = $items ? "\n<ol class=\"ol\">{$items}</ol>\n" : $match;
    }
    return $match;
  }, $text);
}