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+<?php
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+
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+/*
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+ * This file is part of Zippy.
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+ *
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+ * (c) Alchemy <info@alchemy.fr>
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+ *
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+ * For the full copyright and license information, please view the LICENSE
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+ * file that was distributed with this source code.
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+ */
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+
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+namespace Alchemy\Zippy\Adapter;
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+
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+use Alchemy\Zippy\Adapter\Resource\ResourceInterface;
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+use Alchemy\Zippy\Adapter\Resource\ZipArchiveResource;
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+use Alchemy\Zippy\Adapter\VersionProbe\ZipExtensionVersionProbe;
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+use Alchemy\Zippy\Archive\Archive;
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+use Alchemy\Zippy\Archive\Member;
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+use Alchemy\Zippy\Exception\NotSupportedException;
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+use Alchemy\Zippy\Exception\RuntimeException;
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+use Alchemy\Zippy\Exception\InvalidArgumentException;
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+use Alchemy\Zippy\Resource\Resource as ZippyResource;
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+use Alchemy\Zippy\Resource\ResourceManager;
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+
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+/**
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+ * ZipExtensionAdapter allows you to create and extract files from archives
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+ * using PHP Zip extension
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+ *
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+ * @see http://www.php.net/manual/en/book.zip.php
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+ */
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+class ZipExtensionAdapter extends AbstractAdapter
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+{
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+ private $errorCodesMapping = array(
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+ \ZipArchive::ER_EXISTS => "File already exists",
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+ \ZipArchive::ER_INCONS => "Zip archive inconsistent",
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+ \ZipArchive::ER_INVAL => "Invalid argument",
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+ \ZipArchive::ER_MEMORY => "Malloc failure",
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+ \ZipArchive::ER_NOENT => "No such file",
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+ \ZipArchive::ER_NOZIP => "Not a zip archive",
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+ \ZipArchive::ER_OPEN => "Can't open file",
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+ \ZipArchive::ER_READ => "Read error",
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+ \ZipArchive::ER_SEEK => "Seek error"
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+ );
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+
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+ public function __construct(ResourceManager $manager)
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+ {
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+ parent::__construct($manager);
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+ $this->probe = new ZipExtensionVersionProbe();
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+ }
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+
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+ /**
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+ * @inheritdoc
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+ */
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+ protected function doListMembers(ResourceInterface $resource)
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+ {
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+ $members = array();
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+ for ($i = 0; $i < $resource->getResource()->numFiles; $i++) {
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+ $stat = $resource->getResource()->statIndex($i);
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+ $members[] = new Member(
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+ $resource,
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+ $this,
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+ $stat['name'],
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+ $stat['size'],
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+ new \DateTime('@' . $stat['mtime']),
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+ 0 === strlen($resource->getResource()->getFromIndex($i, 1))
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+ );
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+ }
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+
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+ return $members;
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+ }
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+
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+ /**
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+ * @inheritdoc
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+ */
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+ public static function getName()
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+ {
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+ return 'zip-extension';
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+ }
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+
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+ /**
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+ * @inheritdoc
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+ */
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+ protected function doExtract(ResourceInterface $resource, $to)
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+ {
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+ return $this->extractMembers($resource, null, $to);
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+ }
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+
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+ /**
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+ * @inheritdoc
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+ */
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+ protected function doExtractMembers(ResourceInterface $resource, $members, $to, $overwrite = false)
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+ {
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+ if (null === $to) {
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+ // if no destination is given, will extract to zip current folder
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+ $to = dirname(realpath($resource->getResource()->filename));
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+ }
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+
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+ if (!is_dir($to)) {
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+ $resource->getResource()->close();
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+ throw new InvalidArgumentException(sprintf("%s is not a directory", $to));
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+ }
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+
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+ if (!is_writable($to)) {
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+ $resource->getResource()->close();
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+ throw new InvalidArgumentException(sprintf("%s is not writable", $to));
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+ }
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+
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+ if (null !== $members) {
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+ $membersTemp = (array) $members;
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+ if (empty($membersTemp)) {
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+ $resource->getResource()->close();
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+
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+ throw new InvalidArgumentException("no members provided");
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+ }
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+ $members = array();
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+ // allows $members to be an array of strings or array of Members
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+ foreach ($membersTemp as $member) {
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+ if ($member instanceof Member) {
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+ $member = $member->getLocation();
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+ }
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+
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+ if ($resource->getResource()->locateName($member) === false) {
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+ $resource->getResource()->close();
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+
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+ throw new InvalidArgumentException(sprintf('%s is not in the zip file', $member));
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+ }
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+
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+ if ($overwrite == false) {
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+ if (file_exists($member)) {
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+ $resource->getResource()->close();
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+
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+ throw new RuntimeException('Target file ' . $member . ' already exists.');
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+ }
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+ }
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+
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+ $members[] = $member;
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+ }
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+ }
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+
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+ if (!$resource->getResource()->extractTo($to, $members)) {
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+ $resource->getResource()->close();
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+
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+ throw new InvalidArgumentException(sprintf('Unable to extract archive : %s', $resource->getResource()->getStatusString()));
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+ }
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+
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+ return new \SplFileInfo($to);
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+ }
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+
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+ /**
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+ * @inheritdoc
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+ */
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+ protected function doRemove(ResourceInterface $resource, $files)
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+ {
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+ $files = (array) $files;
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+
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+ if (empty($files)) {
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+ throw new InvalidArgumentException("no files provided");
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+ }
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+
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+ // either remove all files or none in case of error
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+ foreach ($files as $file) {
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+ if ($resource->getResource()->locateName($file) === false) {
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+ $resource->getResource()->unchangeAll();
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+ $resource->getResource()->close();
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+
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+ throw new InvalidArgumentException(sprintf('%s is not in the zip file', $file));
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+ }
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+ if (!$resource->getResource()->deleteName($file)) {
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+ $resource->getResource()->unchangeAll();
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+ $resource->getResource()->close();
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+
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+ throw new RuntimeException(sprintf('unable to remove %s', $file));
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+ }
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+ }
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+ $this->flush($resource->getResource());
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+
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+ return $files;
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+ }
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+
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+ /**
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+ * @inheritdoc
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+ */
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+ protected function doAdd(ResourceInterface $resource, $files, $recursive)
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+ {
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+ $files = (array) $files;
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+ if (empty($files)) {
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+ $resource->getResource()->close();
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+ throw new InvalidArgumentException("no files provided");
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+ }
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+ $this->addEntries($resource, $files, $recursive);
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+
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+ return $files;
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+ }
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+
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+ /**
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+ * @inheritdoc
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+ */
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+ protected function doCreate($path, $files, $recursive)
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+ {
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+ $files = (array) $files;
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+
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+ if (empty($files)) {
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+ throw new NotSupportedException("Cannot create an empty zip");
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+ }
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+
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+ $resource = $this->getResource($path, \ZipArchive::CREATE);
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+ $this->addEntries($resource, $files, $recursive);
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+
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+ return new Archive($resource, $this, $this->manager);
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+ }
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+
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+ /**
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+ * Returns a new instance of the invoked adapter
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+ *
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+ * @return AbstractAdapter
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+ *
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+ * @throws RuntimeException In case object could not be instanciated
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+ */
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+ public static function newInstance()
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+ {
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+ return new ZipExtensionAdapter(ResourceManager::create());
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+ }
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+
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+ protected function createResource($path)
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+ {
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+ return $this->getResource($path, \ZipArchive::CHECKCONS);
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+ }
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+
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+ private function getResource($path, $mode)
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+ {
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+ $zip = new \ZipArchive();
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+ $res = $zip->open($path, $mode);
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+
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+ if ($res !== true) {
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+ throw new RuntimeException($this->errorCodesMapping[$res]);
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+ }
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+
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+ return new ZipArchiveResource($zip);
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+ }
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+
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+ private function addEntries(ResourceInterface $zipResource, array $files, $recursive)
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+ {
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+ $stack = new \SplStack();
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+
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+ $error = null;
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+ $cwd = getcwd();
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+ $collection = $this->manager->handle($cwd, $files);
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+
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+ $this->chdir($collection->getContext());
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+
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+ $adapter = $this;
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+
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+ try {
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+ $collection->forAll(function($i, ZippyResource $resource) use ($zipResource, $stack, $recursive, $adapter) {
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+ $adapter->checkReadability($zipResource->getResource(), $resource->getTarget());
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+ if (is_dir($resource->getTarget())) {
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+ if ($recursive) {
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+ $stack->push($resource->getTarget() . ((substr($resource->getTarget(), -1) === DIRECTORY_SEPARATOR) ? '' : DIRECTORY_SEPARATOR));
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+ } else {
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+ $adapter->addEmptyDir($zipResource->getResource(), $resource->getTarget());
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+ }
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+ } else {
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+ $adapter->addFileToZip($zipResource->getResource(), $resource->getTarget());
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+ }
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+
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+ return true;
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+ });
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+
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+ // recursively add dirs
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+ while (!$stack->isEmpty()) {
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+ $dir = $stack->pop();
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+ // removes . and ..
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+ $files = array_diff(scandir($dir), array(".", ".."));
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+ if (count($files) > 0) {
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+ foreach ($files as $file) {
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+ $file = $dir . $file;
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+ $this->checkReadability($zipResource->getResource(), $file);
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+ if (is_dir($file)) {
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+ $stack->push($file . DIRECTORY_SEPARATOR);
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+ } else {
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+ $this->addFileToZip($zipResource->getResource(), $file);
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+ }
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+ }
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+ } else {
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+ $this->addEmptyDir($zipResource->getResource(), $dir);
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+ }
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+ }
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+ $this->flush($zipResource->getResource());
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+
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+ $this->manager->cleanup($collection);
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+ } catch (\Exception $e) {
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+ $error = $e;
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+ }
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+
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+ $this->chdir($cwd);
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+
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+ if ($error) {
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+ throw $error;
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+ }
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+ }
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+
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+ /**
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+ * Is public for PHP 5.3 compatibility, should be private
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+ *
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+ * @param \ZipArchive $zip
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+ * @param string $file
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+ */
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+ public function checkReadability(\ZipArchive $zip, $file)
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+ {
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+ if (!is_readable($file)) {
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+ $zip->unchangeAll();
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+ $zip->close();
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+
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+ throw new InvalidArgumentException(sprintf('could not read %s', $file));
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+ }
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+ }
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+
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+ /**
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+ * Is public for PHP 5.3 compatibility, should be private
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+ *
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+ * @param \ZipArchive $zip
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+ * @param string $file
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+ */
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+ public function addFileToZip(\ZipArchive $zip, $file)
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+ {
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+ if (!$zip->addFile($file)) {
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+ $zip->unchangeAll();
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+ $zip->close();
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+
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+ throw new RuntimeException(sprintf('unable to add %s to the zip file', $file));
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+ }
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+ }
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+
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+ /**
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+ * Is public for PHP 5.3 compatibility, should be private
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+ *
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+ * @param \ZipArchive $zip
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+ * @param string $dir
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+ */
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+ public function addEmptyDir(\ZipArchive $zip, $dir)
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+ {
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+ if (!$zip->addEmptyDir($dir)) {
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+ $zip->unchangeAll();
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+ $zip->close();
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+
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+ throw new RuntimeException(sprintf('unable to add %s to the zip file', $dir));
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+ }
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+ }
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+
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+ /**
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+ * Flushes changes to the archive
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+ *
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+ * @param \ZipArchive $zip
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+ */
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+ private function flush(\ZipArchive $zip) // flush changes by reopening the file
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+ {
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+ $path = $zip->filename;
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+ $zip->close();
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+ $zip->open($path, \ZipArchive::CHECKCONS);
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+ }
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+}
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