_filter_autop
modules/filter/filter.module, строка 876
- Версии
- 5 – 6
_filter_autop($text)
Convert line breaks into <p> and <br> in an intelligent fashion. Based on: http://photomatt.net/scripts/autop
Код
<?php
function _filter_autop($text) {
// All block level tags
$block = '(?:table|thead|tfoot|caption|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|select|form|blockquote|address|p|h[1-6]|hr)';
// Split at <pre>, <script>, <style> and </pre>, </script>, </style> tags.
// We don't apply any processing to the contents of these tags to avoid messing
// up code. We look for matched pairs and allow basic nesting. For example:
// "processed <pre> ignored <script> ignored </script> ignored </pre> processed"
$chunks = preg_split('@(</?(?:pre|script|style|object)[^>]*>)@i', $text, -1, PREG_SPLIT_DELIM_CAPTURE);
// Note: PHP ensures the array consists of alternating delimiters and literals
// and begins and ends with a literal (inserting NULL as required).
$ignore = FALSE;
$ignoretag = '';
$output = '';
foreach ($chunks as $i => $chunk) {
if ($i % 2) {
// Opening or closing tag?
$open = ($chunk[1] != '/');
list($tag) = split('[ >]', substr($chunk, 2 - $open), 2);
if (!$ignore) {
if ($open) {
$ignore = TRUE;
$ignoretag = $tag;
}
}
// Only allow a matching tag to close it.
else if (!$open && $ignoretag == $tag) {
$ignore = FALSE;
$ignoretag = '';
}
}
else if (!$ignore) {
$chunk = preg_replace('|\n*$|', '', $chunk) ."\n\n"; // just to make things a little easier, pad the end
$chunk = preg_replace('|<br />\s*<br />|', "\n\n", $chunk);
$chunk = preg_replace('!(<'. $block .'[^>]*>)!', "\n$1", $chunk); // Space things out a little
$chunk = preg_replace('!(</'. $block .'>)!', "$1\n\n", $chunk); // Space things out a little
$chunk = preg_replace("/\n\n+/", "\n\n", $chunk); // take care of duplicates
$chunk = preg_replace('/\n?(.+?)(?:\n\s*\n|\z)/s', "<p>$1</p>\n", $chunk); // make paragraphs, including one at the end
$chunk = preg_replace('|<p>\s*</p>\n|', '', $chunk); // under certain strange conditions it could create a P of entirely whitespace
$chunk = preg_replace("|<p>(<li.+?)</p>|", "$1", $chunk); // problem with nested lists
$chunk = preg_replace('|<p><blockquote([^>]*)>|i', "<blockquote$1><p>", $chunk);
$chunk = str_replace('</blockquote></p>', '</p></blockquote>', $chunk);
$chunk = preg_replace('!<p>\s*(</?'. $block .'[^>]*>)!', "$1", $chunk);
$chunk = preg_replace('!(</?'. $block .'[^>]*>)\s*</p>!', "$1", $chunk);
$chunk = preg_replace('|(?<!<br />)\s*\n|', "<br />\n", $chunk); // make line breaks
$chunk = preg_replace('!(</?'. $block .'[^>]*>)\s*<br />!', "$1", $chunk);
$chunk = preg_replace('!<br />(\s*</?(?:p|li|div|th|pre|td|ul|ol)>)!', '$1', $chunk);
$chunk = preg_replace('/&([^#])(?![A-Za-z0-9]{1,8};)/', '&$1', $chunk);
}
$output .= $chunk;
}
return $output;
}
?>
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