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Use currying to call the url callbacks, and use preg_replace_callback

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This definitely looks neater than the string maniplation it replaces
This commit is contained in:
Craig Andrews 2009-08-21 12:47:01 -04:00
parent a8d3545182
commit 70ca03f336
1 changed files with 23 additions and 15 deletions
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38
lib/util.php
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@ -445,24 +445,32 @@ function common_replace_urls_callback($text, $callback, $notice_id = null) {
'(?:[:/][^\s]*)?'.
')'.
'#ix';
preg_match_all($regex, $text, $matches);
// Then clean up what the regex left behind
$offset = 0;
foreach($matches[1] as $url) {
// Call user specified func
if (empty($notice_id)) {
$modified_url = call_user_func($callback, $url);
} else {
$modified_url = call_user_func($callback, array($url, $notice_id));
}
// Replace it!
$start = mb_strpos($text, $url, $offset);
$text = mb_substr($text, 0, $start).$modified_url.mb_substr($text, $start + mb_strlen($url), mb_strlen($text));
$offset = $start + mb_strlen($modified_url);
$callback_helper = curry(callback_helper, 3);
return preg_replace_callback($regex, $callback_helper($callback,$notice_id) ,$text);
}
function callback_helper($callback, $notice_id, $matches) {
if(empty($notice_id)){
return $callback($matches[1],$notice_id);
}else{
return $callback($matches[1]);
}
}
return $text;
function curry($func, $arity) {
return create_function('', "
\$args = func_get_args();
if(count(\$args) >= $arity)
return call_user_func_array('$func', \$args);
\$args = var_export(\$args, 1);
return create_function('','
\$a = func_get_args();
\$z = ' . \$args . ';
\$a = array_merge(\$z,\$a);
return call_user_func_array(\'$func\', \$a);
');
");
}
function common_linkify($url) {