public function testRandomString()
{
$re = '|^[A-Za-z][A-Za-z0-9]*$|';
$this->assertTrue(preg_match($re, $s = FWU::randomString()));
$this->assertEqual(strlen($s), 40);
$this->assertTrue(preg_match($re, $s = FWU::randomString(1)));
$this->assertEqual(strlen($s), 1);
}
private static function _parse($content)
{
// create DOMDocument instance
$dom = new DOMDocument();
if (!$dom->loadXML('<root>' . $content . '</root>')) {
throw new Exception('menu plugin: PHP DOM couldn\'t parse menu XML.');
}
$dom->normalizeDocument();
// process <a> elements
$dom_links = $dom->getElementsByTagName('a');
$links = array();
foreach ($dom_links as $dom_link) {
// get `l' attribute
if ($dom_link->hasAttribute('l')) {
$link_id = trim($dom_link->getAttribute('l'));
if (!$link_id) {
throw new Exception('menu plugin: link id cannot be empty.');
}
$dom_link->removeAttribute('l');
} else {
$link_id = null;
}
// add placeholders
$placeholders = array();
$placeholders['class'] = '--' . FWU::randomString() . '--';
if ($dom_link->hasAttribute('class')) {
$dom_link->setAttribute('class', trim($dom_link->getAttribute('class') . ' ' . $placeholders['class']));
} else {
$dom_link->setAttribute('class', $placeholders['class']);
}
if (!$dom_link->hasAttribute('id')) {
$placeholders['id'] = '--' . FWU::randomString() . '--';
$dom_link->setAttribute('id', $placeholders['id']);
} else {
$placeholders['id'] = null;
}
// add to $links array
$links[] = array('id' => $link_id, 'placeholders' => $placeholders);
}
// done
return array('links' => $links, 'html' => preg_replace('|^\\s*<\\?xml version="1.0"\\?>\\s*<root>(.*)</root>\\s*$|s', '$1', $dom->saveXML()));
}
