* @link http://elgg.org/ */ /** * Takes a string and turns any URLs into formatted links * * @param string $text The input string * @return string The output stirng with formatted links **/ function parse_urls($text) { // @todo this causes problems with // must be ing format (no space). // By default htmlawed rewrites tags to this format. // if PHP supported conditional negative lookbehinds we could use this: // $r = preg_replace_callback('/(?"\'\!\(\),]+)/i', // // we can put , in the list of excluded char but need to keep . because of domain names. // it is removed in the callback. $r = preg_replace_callback('/(?"\'\!\(\),]+)/i', create_function( '$matches', ' $url = $matches[1]; $period = \'\'; if (substr($url, -1, 1) == \'.\') { $period = \'.\'; $url = trim($url, \'.\'); } $urltext = str_replace("/", "/", $url); return "$urltext$period"; ' ), $text); return $r; } /** * Create paragraphs from text with line spacing * Borrowed from Wordpress. * **/ function autop($pee, $br = 1) { $pee = $pee . "\n"; // just to make things a little easier, pad the end $pee = preg_replace('|
\s*
|', "\n\n", $pee); // Space things out a little $allblocks = '(?:table|thead|tfoot|caption|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|select|form|map|area|blockquote|address|math|style|input|p|h[1-6]|hr)'; $pee = preg_replace('!(<' . $allblocks . '[^>]*>)!', "\n$1", $pee); $pee = preg_replace('!()!', "$1\n\n", $pee); $pee = str_replace(array("\r\n", "\r"), "\n", $pee); // cross-platform newlines if ( strpos($pee, ']*)>\s*|', "", $pee); // no pee inside object/embed $pee = preg_replace('|\s*\s*|', '', $pee); } $pee = preg_replace("/\n\n+/", "\n\n", $pee); // take care of duplicates $pee = preg_replace('/\n?(.+?)(?:\n\s*\n|\z)/s', "

$1

\n", $pee); // make paragraphs, including one at the end $pee = preg_replace('|

\s*?

|', '', $pee); // under certain strange conditions it could create a P of entirely whitespace $pee = preg_replace('!

([^<]+)\s*?(]*>)!', "

$1

$2", $pee); $pee = preg_replace( '|

|', "$1

", $pee ); $pee = preg_replace('!

\s*(]*>)\s*

!', "$1", $pee); // don't pee all over a tag $pee = preg_replace("|

(|", "$1", $pee); // problem with nested lists $pee = preg_replace('|

]*)>|i', "

", $pee); $pee = str_replace('

', '

', $pee); $pee = preg_replace('!

\s*(]*>)!', "$1", $pee); $pee = preg_replace('!(]*>)\s*

!', "$1", $pee); if ($br) { $pee = preg_replace_callback('/<(script|style).*?<\/\\1>/s', create_function('$matches', 'return str_replace("\n", "", $matches[0]);'), $pee); $pee = preg_replace('|(?)\s*\n|', "
\n", $pee); // optionally make line breaks $pee = str_replace('', "\n", $pee); } $pee = preg_replace('!(]*>)\s*
!', "$1", $pee); $pee = preg_replace('!
(\s*]*>)!', '$1', $pee); // if (strpos($pee, '. Only there because of the comment. // $pee = preg_replace_callback('!()(.*?)!is', 'clean_pre', $pee ); // } $pee = preg_replace( "|\n

$|", '

', $pee ); return $pee; } /** * Returns an excerpt. * Will return up to n chars stopping at the nearest space. * If no spaces are found (like in Japanese) will crop off at the * n char mark. Adds ... if any text was chopped. * * @param string $text * @param int $num_chars Return a string up to $num_chars long * @return string * @since 1.7.2 */ function elgg_make_excerpt($text, $num_chars = 250) { $text = trim(strip_tags($text)); $string_length = elgg_strlen($text); // handle cases $excerpt = elgg_substr($text, 0, $num_chars); $space = elgg_strrpos($excerpt, ' ', 0); // don't crop if can't find a space. if ($space === FALSE) { $space = $num_chars; } $excerpt = trim(elgg_substr($excerpt, 0, $space)); if ($string_length != elgg_strlen($excerpt)) { $excerpt .= '…'; } return $excerpt; } /** * Handles formatting of ampersands in urls * * @param string $url * @return string * @since 1.7.1 */ function elgg_format_url($url) { return preg_replace('/&(?!amp;)/', '&', $url); } /** * When given a title, returns a version suitable for inclusion in a URL * * @param string $title The title * @return string The optimised title */ function friendly_title($title) { return elgg_view('output/friendlytitle', array('title' => $title)); } /** * Displays a UNIX timestamp in a friendly way (eg "less than a minute ago") * * @param int $time A UNIX epoch timestamp * @return string The friendly time */ function friendly_time($time) { return elgg_view('output/friendlytime', array('time' => $time)); }