Added 'Compressor' base class

Author: sebastianfeldmann

src/Backup/Compressor/Abstraction.php

@@ -0,0 +1,63 @@
+<?php
+namespace phpbu\App\Backup\Compressor;
+
+use phpbu\App\Backup\Cli;
+use phpbu\App\Backup\Target;
+use phpbu\App\Cli\Executable\Compressor;
+use phpbu\App\Exception;
+use phpbu\App\Result;
+
+/**
+ * Compressor base class.
+ *
+ * @package    phpbu
+ * @subpackage Backup
+ * @author     Sebastian Feldmann <sebastian@phpbu.de>
+ * @copyright  Sebastian Feldmann <sebastian@phpbu.de>
+ * @license    http://www.opensource.org/licenses/BSD-3-Clause  The BSD 3-Clause License
+ * @link       http://phpbu.de/
+ * @since      Class available since Release 2.0.2
+ */
+abstract class Abstraction extends Cli
+{
+    /**
+     * Path to cli binary.
+     *
+     * @var string
+     */
+    protected $pathToCommand;
+
+    /**
+     * File to dir to compress.
+     *
+     * @var string
+     */
+    protected $path;
+
+    /**
+     * Constructor.
+     *
+     * @param  string $path
+     * @param  string $pathToCommand
+     * @throws \phpbu\App\Exception
+     */
+    public function __construct($path, $pathToCommand = null)
+    {
+        if (empty($path)) {
+            throw new Exception('no path to compress set');
+        }
+        if (!$this->isPathValid($path)) {
+            throw new Exception('path to compress should be a file');
+        }
+        $this->path          = $path;
+        $this->pathToCommand = $pathToCommand;
+    }
+
+    /**
+     * Validate path.
+     *
+     * @param  string $path
+     * @return boolean
+     */
+    abstract public function isPathValid($path);
+}

src/Backup/Compressor/Directory.php

@@ -1,7 +1,6 @@
 <?php
 namespace phpbu\App\Backup\Compressor;
 
-use phpbu\App\Backup\Cli;
 use phpbu\App\Backup\Target;
 use phpbu\App\Cli\Executable\Tar;
 use phpbu\App\Exception;
@@ -18,39 +17,17 @@
  * @link       http://phpbu.de/
  * @since      Class available since Release 2.0.1
  */
-class Directory extends Cli
+class Directory extends Abstraction
 {
     /**
-     * Path to cli binary.
-     *
-     * @var string
-     */
-    private $pathToCommand;
-
-    /**
-     * Path to dir to compress.
-     *
-     * @var string
-     */
-    private $path;
-
-    /**
-     * Constructor.
+     * Validate path.
      *
      * @param  string $path
-     * @param  string $pathToCommand
-     * @throws \phpbu\App\Exception
+     * @return boolean
      */
-    public function __construct($path, $pathToCommand = null)
+    public function isPathValid($path)
     {
-        if (empty($path)) {
-            throw new Exception('no path to compress set');
-        }
-        if (!is_dir($path)) {
-            throw new Exception('path to compress should be a directory');
-        }
-        $this->path          = $path;
-        $this->pathToCommand = $pathToCommand;
+        return is_dir($path);
     }
 
     /**

src/Backup/Compressor/File.php

@@ -18,39 +18,17 @@
  * @link       http://phpbu.de/
  * @since      Class available since Release 2.0.2
  */
-class File extends Cli
+class File extends Abstraction
 {
     /**
-     * Path to cli binary.
-     *
-     * @var string
-     */
-    private $pathToCommand;
-
-    /**
-     * File to dir to compress.
-     *
-     * @var string
-     */
-    private $path;
-
-    /**
-     * Constructor.
+     * Validate path.
      *
      * @param  string $path
-     * @param  string $pathToCommand
-     * @throws \phpbu\App\Exception
+     * @return boolean
      */
-    public function __construct($path, $pathToCommand = null)
+    public function isPathValid($path)
     {
-        if (empty($path)) {
-            throw new Exception('no path to compress set');
-        }
-        if (!is_file($path)) {
-            throw new Exception('path to compress should be a file');
-        }
-        $this->path          = $path;
-        $this->pathToCommand = $pathToCommand;
+        return is_file($path);
     }
 
     /**