diff options
Diffstat (limited to 'wp-includes/feed.php')
| -rw-r--r-- | wp-includes/feed.php | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/wp-includes/feed.php b/wp-includes/feed.php index 8f9219c..6b431b1 100644 --- a/wp-includes/feed.php +++ b/wp-includes/feed.php @@ -250,4 +250,47 @@ function atom_enclosure() { } } +/** + * prep_atom_text_construct() - determine if given string of data is + * type text, html, or xhtml, per RFC 4287 section 3.1. + * + * In the case of WordPress, text is defined as containing no markup, + * xhtml is defined as "well formed", and html as tag soup (i.e., the rest). + * + * Container div tags are added to xhtml values, per section 3.1.1.3. + * + * @package WordPress + * @subpackage Feed + * @since 2.4 + * + * @param string $data input string + * @return array $result array(type, value) + * @link http://www.atomenabled.org/developers/syndication/atom-format-spec.php#rfc.section.3.1 + */ +function prep_atom_text_construct($data) { + if (strpos($data, '<') === false && strpos($data, '&') === false) { + return array('text', $data); + } + + $parser = xml_parser_create(); + xml_parse($parser, '<div>' . $data . '</div>', true); + $code = xml_get_error_code($parser); + xml_parser_free($parser); + + if (!$code) { + if (strpos($data, '<') === false) { + return array('text', $data); + } else { + $data = "<div xmlns='http://www.w3.org/1999/xhtml'>$data</div>"; + return array('xhtml', $data); + } + } + + if (strpos($data, ']]>') == false) { + return array('html', "<![CDATA[$data]]>"); + } else { + return array('html', htmlspecialchars($data)); + } +} + ?> |