update

src/Epub/Reader.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace Nightmare\Epub;
+
+use Nightmare\Fs;
+use Exception;
+use ZipArchive;
+
+class Reader {
+    private $zip;
+    private $file_path;
+
+    // private $epub_opf_file;
+    private $epub_opf_dir;
+
+    public function __construct($file_path) {
+        $this->file_path = $file_path;
+        $this->zip = new ZipArchive();
+
+        $this->check();
+        $this->read_metadata();
+    }
+
+    private function check() {
+        // check file
+        if (!is_file($this->file_path)) {
+            throw new Exception('epub not exists or not permission');
+        }
+
+        if (filesize($this->file_path) < 1) {
+            throw new Exception('epub not exists or not permission');
+        }
+
+        // check epub valid
+        if ($this->zip->open($this->file_path) !== TRUE) {
+            throw new Exception('epub read error');
+        }
+
+        if ($this->zip->getFromName('mimetype') !== 'application/epub+zip') {
+            throw new Exception('epub format error');
+        }
+    }
+
+    private function read_metadata() {
+        $meta = $this->zip->getFromName('META-INF/container.xml');
+        $meta = simplexml_load_string($meta);
+        $this->epub_opf_dir = (string) $meta->rootfiles->rootfile['full-path'];
+ 
+        $meta = $this->zip->getFromName($this->epub_opf_dir);
+        $meta = simplexml_load_string($meta);
+
+        var_dump($meta->metadata->children('http://purl.org/dc/elements/1.1/'));
+    }
+}