Add factory class

src/Shuble/Slurpy/Factory.php

@@ -0,0 +1,104 @@
+<?php
+
+namespace Shuble\Slurpy;
+
+use Shuble\Slurpy\Operation\OperationArgument\PageRange;
+use Shuble\Slurpy\InputFile;
+use Shuble\Slurpy\Operation\CatOperation;
+
+class Factory
+{
+    /**
+     * Path to pdftk binary
+     *
+     * @var string
+     */
+    protected $binary;
+
+    /**
+     * Constructor
+     *
+     * @param string $binary
+     */
+    public function __construct($binary)
+    {
+        $this->binary = $binary;
+    }
+
+    /**
+     * Creates a slurpy instance initialized with a cat operation
+     *
+     * @param array $inputs An array of input files
+     *    array(
+     *        'path/to/file1.pdf',
+     *        'path/to/file2.pdf',
+     *        ...
+     *    )
+     *    or
+     *    array(
+     *        array(
+     *            'filepath' => 'path/to/file1.pdf',
+     *            'password' => 'pa$$word',
+     *            'start_page' => 1,
+     *            'end_page' => end,
+     *            'qualifier' => 'odd',
+     *            'rotation' => 'east',
+     *        ),
+     *        ...
+     *    )
+     * @param string $output
+     */
+    public function cat(array $inputs, $output = null)
+    {
+        $slurpy = new Slurpy($this->binary);
+
+        $operation = new CatOperation();
+
+        foreach ($inputs as $index => $input) {
+            $inputFile = new InputFile();
+
+            if (is_array($input) && empty($input['filepath'])) {
+                throw new \InvalidArgumentException('You must specify a filepath for each input files');
+            }
+
+            // InputFile data
+            $handle = $this->generateFileHandle($index);
+            $filePath = is_array($input) ? $input['filepath'] : $input;
+            $filePassword = is_array($input) && !empty($input['password'])
+                ? $input['password']
+                : null
+            ;
+
+            $inputFile->setHandle($handle);
+            $inputFile->setFilePath($filePath);
+            $inputFile->setPassword(null);
+
+            $slurpy->addInput($inputFile);
+
+            // PageRange data
+            $startPage = is_array($input) && !empty($input['start_page']) ? $input['start_page'] : null;
+            $endPage = is_array($input) && !empty($input['end_page']) ? $input['end_page'] : null;
+            $qualifier = is_array($input) && !empty($input['qualifier']) ? $input['qualifier'] : null;
+            $rotation = is_array($input) && !empty($input['rotation']) ? $input['rotation'] : null;
+
+            $pageRange = new PageRange($handle, $startPage, $endPage, $qualifier, $rotation);
+            $operation->addPageRange($pageRange);
+
+            $slurpy->setOperation($operation);
+        }
+
+        return $slurpy;
+    }
+
+    /**
+     * Generate a unique file handle
+     *
+     * @param int $index
+     *
+     * @return string
+     */
+    protected function generateFileHandle($index)
+    {
+        return chr(65 + floor($index/26) % 26) . chr(65 + $index % 26);
+    }
+}