function MarkdownExtra_Parser::doExtraAttributes in Markdown 6

6 calls to MarkdownExtra_Parser::doExtraAttributes()

MarkdownExtra_Parser::_doAnchors_inline_callback in ./markdown.php

MarkdownExtra_Parser::_doFencedCodeBlocks_callback in ./markdown.php

MarkdownExtra_Parser::_doHeaders_callback_atx in ./markdown.php

MarkdownExtra_Parser::_doHeaders_callback_setext in ./markdown.php

MarkdownExtra_Parser::_doImages_inline_callback in ./markdown.php

... See full list

File

./markdown.php, line 1809

Class

MarkdownExtra_Parser

Code

function doExtraAttributes($tag_name, $attr) {

  #

  # Parse attributes caught by the $this->id_class_attr_catch_re expression

  # and return the HTML-formatted list of attributes.

  #

  # Currently supported attributes are .class and #id.

  #
  if (empty($attr)) {
    return "";
  }

  # Split on components
  preg_match_all('/[#.][-_:a-zA-Z0-9]+/', $attr, $matches);
  $elements = $matches[0];

  # handle classes and ids (only first id taken into account)
  $classes = array();
  $id = false;
  foreach ($elements as $element) {
    if ($element[0] == '.') {
      $classes[] = substr($element, 1);
    }
    else {
      if ($element[0] == '#') {
        if ($id === false) {
          $id = substr($element, 1);
        }
      }
    }
  }

  # compose attributes as string
  $attr_str = "";
  if (!empty($id)) {
    $attr_str .= ' id="' . $id . '"';
  }
  if (!empty($classes)) {
    $attr_str .= ' class="' . implode(" ", $classes) . '"';
  }
  return $attr_str;
}