public function testGetTagAttr()
{
$fesc = fesc($_ = "<&\"'>");
$tag = "\n <a data-value=1 fesc='{$fesc}' href='/about/' class=\"class\" target=_blank>About</a>\n ";
$attr = getTagAttr($tag);
$attrHref = getTagAttr($tag, 'href');
$attrNone = getTagAttr($tag, 'none');
$attrFesc = getTagAttr($tag, 'fesc');
$this->assertEquals($attr['href'], "/about/");
$this->assertEquals($attr['class'], "class");
$this->assertEquals($attr['target'], "_blank");
$this->assertEquals($attr['data-value'], "1");
$this->assertTrue($attrHref ? true : false);
$this->assertFalse($attrNone ? true : false);
$this->assertEquals($attrFesc, $_);
}
function xpath($string, $query = '/*')
{
if (is_string($string)) {
// SOME FIXES TO BE COMPATIBLE WITH XML
$tags = 'area|base|br|col|command|embed|hr|img|input|keygen|link|meta|param|source|track|wbr';
$string = preg_replace_callback("~<({$tags})\\b[^>]*>~", function ($m) {
$last = mb_substr($m[0], -2);
if ($last != "/>") {
return rtrim(mb_substr($m[0], 0, -1)) . ' />';
}
return $m[0];
}, $string);
$string = preg_replace_callback('~<html\\b[^>]*>~', function ($m) {
$attrs = getTagAttr($m[0]);
if (!isset($attrs['xmlns'])) {
return $m[0];
}
unset($attrs['xmlns']);
$attrs = prepareAttr($attrs);
$attrs = $attrs ? " {$attrs}" : '';
return "<html{$attrs}>";
}, $string);
}
if (func_num_args() > 2) {
$callback = func_get_arg(2);
}
$query = trim($query);
if (!$query) {
return array();
}
$predefined = array('remove' => function ($tag) {
$tag->parentNode->removeChild($tag);
}, 'unwrap' => function ($tag) {
if ($tag->hasChildNodes()) {
$collector = array();
foreach ($tag->childNodes as $child) {
$collector[] = $child;
}
for ($i = 0; $i < count($collector); $i++) {
$tag->parentNode->insertBefore($collector[$i], $tag);
}
}
$tag->parentNode->removeChild($tag);
});
$query = preg_replace('~class\\((?P<class>.*?)\\)~i', 'contains(concat(" ",normalize-space(@class)," ")," $1 ")', $query);
$query = preg_replace('~lower-case\\((?P<lower>.*?)\\)~i', 'translate($1,"ABCDEFGHIJKLMNOPQRSTUVWXYZ","abcdefghijklmnopqrstuvwxyz")', $query);
if ($string instanceof DOMNode) {
if ($string->nodeType === XML_TEXT_NODE) {
if (func_num_args() === 1) {
return $string->nodeValue;
} elseif (func_num_args() === 2) {
return array();
} else {
return '';
}
}
$doc = $string->ownerDocument;
$string = $doc->saveXML($string);
}
$doc = new DOMDocument();
$doc->preserveWhiteSpace = false;
if (isset($callback) and $callback === "preserveWhiteSpace") {
unset($callback);
$doc->preserveWhiteSpace = true;
}
$doc->formatOutput = true;
libxml_use_internal_errors(true);
$_ = $doc->loadXML($string);
if (!$_) {
$doc->loadHTML('<?xml encoding="UTF-8">' . $string);
}
$doc->normalizeDocument();
libxml_clear_errors();
$xpath = new DOMXPath($doc);
$tags = $xpath->query($query);
if (isset($callback) and !is_numeric($callback)) {
if (!$tags instanceof DOMNodeList) {
_log("XPATH: INVALID QUERY: {$query}", E_USER_WARNING);
return "";
}
if (is_string($callback) and isset($predefined[$callback])) {
$callback = $predefined[$callback];
}
$callback = function ($tag) use($callback) {
$_ = $tag;
while (isset($_->parentNode)) {
$_ = $_->parentNode;
}
if ($_ instanceof DOMDocument) {
$callback($tag);
}
};
$collector = array();
foreach ($tags as $tag) {
$collector[] = $tag;
}
$tags = $collector;
if ($callback === 'attr') {
list($tag) = $tags;
$tag = $doc->saveXML($tag);
$qs = explode('@', $query);
return getTagAttr($tag, $qs[count($qs) - 1]);
}
for ($i = 0; $i < count($tags); $i++) {
$callback($tags[$i]);
}
return $doc->saveXML($doc->documentElement);
}
$return = array();
if (!$tags instanceof DOMNodeList) {
_log("XPATH: INVALID QUERY: {$query}", E_USER_WARNING);
return array();
}
foreach ($tags as $tag) {
$return[] = $doc->saveXML($tag);
}
if (isset($callback) and is_numeric($callback)) {
$int = intval($callback);
if ($int < 0) {
$int = count($return) + $int;
}
return isset($return[$int]) ? $return[$int] : '';
}
if (func_num_args() === 1) {
return implode('', $return);
}
return $return;
}