/usr/share/php/Symfony/Component/VarDumper/Caster/LinkStub.php is in php-symfony-var-dumper 3.4.6+dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\VarDumper\Caster;
/**
* Represents a file or a URL.
*
* @author Nicolas Grekas <p@tchwork.com>
*/
class LinkStub extends ConstStub
{
public $inVendor = false;
private static $vendorRoots;
private static $composerRoots;
public function __construct($label, $line = 0, $href = null)
{
$this->value = $label;
if (null === $href) {
$href = $label;
}
if (!is_string($href)) {
return;
}
if (0 === strpos($href, 'file://')) {
if ($href === $label) {
$label = substr($label, 7);
}
$href = substr($href, 7);
} elseif (false !== strpos($href, '://')) {
$this->attr['href'] = $href;
return;
}
if (!file_exists($href)) {
return;
}
if ($line) {
$this->attr['line'] = $line;
}
if ($label !== $this->attr['file'] = realpath($href) ?: $href) {
return;
}
if ($composerRoot = $this->getComposerRoot($href, $this->inVendor)) {
$this->attr['ellipsis'] = strlen($href) - strlen($composerRoot) + 1;
$this->attr['ellipsis-type'] = 'path';
$this->attr['ellipsis-tail'] = 1 + ($this->inVendor ? 2 + strlen(implode(array_slice(explode(DIRECTORY_SEPARATOR, substr($href, 1 - $this->attr['ellipsis'])), 0, 2))) : 0);
} elseif (3 < count($ellipsis = explode(DIRECTORY_SEPARATOR, $href))) {
$this->attr['ellipsis'] = 2 + strlen(implode(array_slice($ellipsis, -2)));
$this->attr['ellipsis-type'] = 'path';
$this->attr['ellipsis-tail'] = 1;
}
}
private function getComposerRoot($file, &$inVendor)
{
if (null === self::$vendorRoots) {
self::$vendorRoots = array();
foreach (get_declared_classes() as $class) {
if ('C' === $class[0] && 0 === strpos($class, 'ComposerAutoloaderInit')) {
$r = new \ReflectionClass($class);
$v = dirname(dirname($r->getFileName()));
if (file_exists($v.'/composer/installed.json')) {
self::$vendorRoots[] = $v.DIRECTORY_SEPARATOR;
}
}
}
}
$inVendor = false;
if (isset(self::$composerRoots[$dir = dirname($file)])) {
return self::$composerRoots[$dir];
}
foreach (self::$vendorRoots as $root) {
if ($inVendor = 0 === strpos($file, $root)) {
return $root;
}
}
$parent = $dir;
while (!@file_exists($parent.'/composer.json')) {
if (!@file_exists($parent)) {
// open_basedir restriction in effect
break;
}
if ($parent === dirname($parent)) {
return self::$composerRoots[$dir] = false;
}
$parent = dirname($parent);
}
return self::$composerRoots[$dir] = $parent.DIRECTORY_SEPARATOR;
}
}
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