function get_autolink_pattern_sub(&$pages, $start, $end, $pos)
{
if ($end == 0) {
return '(?!)';
}
$result = '';
$count = $i = $j = 0;
$x = mb_strlen($pages[$start]) <= $pos;
if ($x) {
++$start;
}
for ($i = $start; $i < $end; $i = $j) {
$char = mb_substr($pages[$i], $pos, 1);
for ($j = $i; $j < $end; $j++) {
if (mb_substr($pages[$j], $pos, 1) != $char) {
break;
}
}
if ($i != $start) {
$result .= '|';
}
if ($i >= $j - 1) {
$result .= str_replace(' ', '\\ ', preg_quote(mb_substr($pages[$i], $pos), '/'));
} else {
$result .= str_replace(' ', '\\ ', preg_quote($char, '/')) . get_autolink_pattern_sub($pages, $i, $j, $pos + 1);
}
++$count;
}
if ($x || $count > 1) {
$result = '(?:' . $result . ')';
}
if ($x) {
$result .= '?';
}
return $result;
}
function plugin_update_entities_create($do = FALSE)
{
$files = array('xhtml-lat1.ent', 'xhtml-special.ent', 'xhtml-symbol.ent');
$entities = array_map('plugin_update_entities_strtr', array_values(get_html_translation_table(HTML_ENTITIES)));
$items = array('php:html_translation_table');
$matches = array();
foreach ($files as $file) {
$source = file(W3C_XHTML_DTD_LOCATION . $file);
// or die_message('cannot receive ' . W3C_XHTML_DTD_LOCATION . $file . '.');
if (!is_array($source)) {
$items[] = 'w3c:' . $file . ' COLOR(red):not found.';
continue;
}
$items[] = 'w3c:' . $file;
if (preg_match_all('/<!ENTITY\\s+([A-Za-z0-9]+)/', join('', $source), $matches, PREG_PATTERN_ORDER)) {
$entities = array_merge($entities, $matches[1]);
}
}
if (!$do) {
return $items;
}
$entities = array_unique($entities);
sort($entities, SORT_STRING);
$min = 999;
$max = 0;
foreach ($entities as $entity) {
$len = strlen($entity);
$max = max($max, $len);
$min = min($min, $len);
}
$pattern = "(?=[a-zA-Z0-9]\\{{$min},{$max}})" . get_autolink_pattern_sub($entities, 0, count($entities), 0);
$fp = fopen(CACHE_DIR . 'entities.dat', 'w') or die_message('cannot write file ' . CACHE_DIR . 'entities.dat<br />' . "\n" . 'maybe permission is not writable or filename is too long');
fwrite($fp, $pattern);
fclose($fp);
return $items;
}
