Implemented the ability to override the instance of ZipContainer.

ZipContainer will be cloned before writing the zip file.
Tested custom ZipWriter, ZipReader, ZipContainer and ZipFile.

tests/Internal/Epub/EpubInfo.php

@@ -0,0 +1,159 @@
+<?php
+
+/** @noinspection PhpComposerExtensionStubsInspection */
+
+namespace PhpZip\Tests\Internal\Epub;
+
+use PhpZip\Exception\ZipException;
+
+/**
+ * Class EpubInfo.
+ *
+ * @see http://idpf.org/epub/30/spec/epub30-publications.html
+ */
+class EpubInfo
+{
+    /** @var string|null */
+    private $title;
+
+    /** @var string|null */
+    private $creator;
+
+    /** @var string|null */
+    private $language;
+
+    /** @var string|null */
+    private $publisher;
+
+    /** @var string|null */
+    private $description;
+
+    /** @var string|null */
+    private $rights;
+
+    /** @var string|null */
+    private $date;
+
+    /** @var string|null */
+    private $subject;
+
+    /**
+     * EpubInfo constructor.
+     *
+     * @param $xmlContents
+     *
+     * @throws ZipException
+     */
+    public function __construct($xmlContents)
+    {
+        $doc = new \DOMDocument();
+        $doc->loadXML($xmlContents);
+        $xpath = new \DOMXpath($doc);
+        $xpath->registerNamespace('root', 'http://www.idpf.org/2007/opf');
+        $metaDataNodeList = $xpath->query('//root:metadata');
+
+        if (\count($metaDataNodeList) !== 1) {
+            throw new ZipException('Invalid .opf file format');
+        }
+        $metaDataNode = $metaDataNodeList->item(0);
+
+        $title = $xpath->evaluate('string(//dc:title)', $metaDataNode);
+        $creator = $xpath->evaluate('string(//dc:creator)', $metaDataNode);
+        $language = $xpath->evaluate('string(//dc:language)', $metaDataNode);
+        $publisher = $xpath->evaluate('string(//dc:publisher)', $metaDataNode);
+        $description = $xpath->evaluate('string(//dc:description)', $metaDataNode);
+        $rights = $xpath->evaluate('string(//dc:rights)', $metaDataNode);
+        $date = $xpath->evaluate('string(//dc:date)', $metaDataNode);
+        $subject = $xpath->evaluate('string(//dc:subject)', $metaDataNode);
+
+        $this->title = empty($title) ? null : $title;
+        $this->creator = empty($creator) ? null : $creator;
+        $this->language = empty($language) ? null : $language;
+        $this->publisher = empty($publisher) ? null : $publisher;
+        $this->description = empty($description) ? null : $description;
+        $this->rights = empty($rights) ? null : $rights;
+        $this->date = empty($date) ? null : $date;
+        $this->subject = empty($subject) ? null : $subject;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getTitle()
+    {
+        return $this->title;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getCreator()
+    {
+        return $this->creator;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getLanguage()
+    {
+        return $this->language;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getPublisher()
+    {
+        return $this->publisher;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getDescription()
+    {
+        return $this->description;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getRights()
+    {
+        return $this->rights;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getDate()
+    {
+        return $this->date;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getSubject()
+    {
+        return $this->subject;
+    }
+
+    /**
+     * @return array
+     */
+    public function toArray()
+    {
+        return [
+            'title' => $this->title,
+            'creator' => $this->creator,
+            'language' => $this->language,
+            'publisher' => $this->publisher,
+            'description' => $this->description,
+            'rights' => $this->rights,
+            'date' => $this->date,
+            'subject' => $this->subject,
+        ];
+    }
+}