Added support for merging PDFs.

README.md

@@ -3,7 +3,10 @@ PHPGhostscript
 
 A PHP wrapper for [Ghostscript](https://www.ghostscript.com) ; an interpreter for PostScript™ and Portable Document Format (PDF) files.
 
-Use `PHPGhostscript` for rendering PDF / PostScript™ files to various image types (jpeg / png) or export to PDF with page range (single page / multipage). 
+Use `PHPGhostscript` for rendering PDF / PostScript™ files to various image types (jpeg / png) or export to PDF with page range (single page / multipage).
+
+Setting multiple input files merge them.
+
 Easy to use and OOP interfaced.
 
 

examples/manipulatePDF.php

@@ -15,6 +15,8 @@
 
     ->setOutputFile(__DIR__ . DIRECTORY_SEPARATOR . 'output' . DIRECTORY_SEPARATOR . 'pdf_%2d.pdf')
     ->setInputFile(__DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'MultiPageHorizontal.pdf')
+    // Multipe inputs -> merged output
+    // ->setInputFile(__DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'MultiPageVertical.pdf')
 
     ->setPageStart(2)
     ->setPageEnd(3)

src/PHPGhostscript/Ghostscript.php

@@ -1,4 +1,4 @@
-<?php 
+<?php
 
 
 /**
@@ -15,7 +15,7 @@
 use mikehaertl\shellcommand\Command;
 use daandesmedt\PHPGhostscript\Devices\DeviceInterface;
 use daandesmedt\PHPGhostscript\Devices\DeviceTypes;
-
+use daandesmedt\PHPGhostscript\Devices\JPEG;
 
 class Ghostscript
 {
@@ -87,11 +87,11 @@ class Ghostscript
     ];
 
     /**
-     * Current file
+     * Current files
      * 
-     * @var string
+     * @var string[]
      */
-    private $file;
+    private $files = [];
 
     /**
      * Output file
@@ -141,7 +141,7 @@ public function __construct(string $binaryPath = null)
             $this->setBinaryPath($binaryPath);
         }
 
-        $this->setDevice(DeviceTypes::JPEG);
+        $this->setDevice(new JPEG);
     }
 
 
@@ -332,21 +332,31 @@ public function setInputFile($file) : Ghostscript
             }
         }
 
-        $this->file = $file;
+        $this->files[] = $file;
         return $this;
     }
 
 
     /**
-     * Get inputfile
+     * Get inputfiles
      *
-     * @return string
+     * @return array
      */
-    public function getInputFile() : string
+    public function getInputFiles() : array
     {
-        return $this->file;
+        return $this->files;
     }
 
+    /**
+     * Clear inputfiles
+     *
+     * @return self
+     */
+    public function clearInputFiles() : Ghostscript
+    {
+        $this->files = [];
+        return $this;
+    }
 
     /**
      * Set output file
@@ -527,13 +537,14 @@ public function render()
             $command->addArg($arg);
         }
 
-        $command->addArg(' ' . $this->file);
+        foreach ($this->files as $file) {
+            $command->addArg(' ' . $file);
+        }
 
         if ($command->execute() && $command->getExitCode() == 0) {
             return true;
         } else {
             throw new GhostscriptException('Ghostscript was unable to transcode');
         }
     }
-
-}
+}

tests/PHPGhostscript/PHPGhostscriptTest.php

@@ -93,47 +93,48 @@ public function testInexistentInputFile()
     public function testInputFile()
     {
         $ghostscript = new Ghostscript();
-        $ghostscript->setInputFile( __DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'Helicopter.ps');
-        $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'Helicopter.ps', $ghostscript->getInputFile());
-
+        $ghostscript->setInputFile(__DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'Helicopter.ps');
+        $this->assertEquals([__DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'Helicopter.ps'], $ghostscript->getInputFiles());
+        $ghostscript->setInputFile(__DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'Helicopter.ps');
+        $this->assertEquals([__DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'Helicopter.ps', __DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'Helicopter.ps'], $ghostscript->getInputFiles());
     }
 
     public function testOutputFile()
-    {   
+    {
         $ghostscript = new Ghostscript();
-        $ghostscript->setOutputFile( __DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'Helicopter.ps');
+        $ghostscript->setOutputFile(__DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'Helicopter.ps');
         $this->assertEquals(__DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'Helicopter.ps', $ghostscript->getOutputFile());
     }
 
     public function testSettingPages()
     {
         $ghostscript = new Ghostscript();
 
-        $this->assertEquals(1,$ghostscript->getPageStart());
+        $this->assertEquals(1, $ghostscript->getPageStart());
         $ghostscript->setPageStart(20);
-        $this->assertEquals(20,$ghostscript->getPageStart());
+        $this->assertEquals(20, $ghostscript->getPageStart());
 
-        $this->assertEquals(1,$ghostscript->getPageEnd());
+        $this->assertEquals(1, $ghostscript->getPageEnd());
         $ghostscript->setPageEnd(99);
-        $this->assertEquals(99,$ghostscript->getPageEnd());
+        $this->assertEquals(99, $ghostscript->getPageEnd());
 
-        $ghostscript->setPages(44,88);
-        $this->assertEquals(44,$ghostscript->getPageStart());
-        $this->assertEquals(88,$ghostscript->getPageEnd());
+        $ghostscript->setPages(44, 88);
+        $this->assertEquals(44, $ghostscript->getPageStart());
+        $this->assertEquals(88, $ghostscript->getPageEnd());
     }
 
     public function testSetBox()
     {
         $ghostscript = new Ghostscript();
         $this->assertNull($ghostscript->getBox());
         $ghostscript->setBox(Ghostscript::BOX_CROP);
-        $this->assertEquals(Ghostscript::BOX_CROP,$ghostscript->getBox());
+        $this->assertEquals(Ghostscript::BOX_CROP, $ghostscript->getBox());
         $ghostscript->setBox(Ghostscript::BOX_ART);
-        $this->assertEquals(Ghostscript::BOX_ART,$ghostscript->getBox());
+        $this->assertEquals(Ghostscript::BOX_ART, $ghostscript->getBox());
         $ghostscript->setBox(Ghostscript::BOX_ART);
-        $this->assertEquals(Ghostscript::BOX_ART,$ghostscript->getBox());
+        $this->assertEquals(Ghostscript::BOX_ART, $ghostscript->getBox());
         $ghostscript->setBox(Ghostscript::BOX_BLEED);
-        $this->assertEquals(Ghostscript::BOX_BLEED,$ghostscript->getBox());
+        $this->assertEquals(Ghostscript::BOX_BLEED, $ghostscript->getBox());
         $ghostscript->setBox(Ghostscript::BOX_NONE);
         $this->assertNull($ghostscript->getBox());
         $ghostscript->setBox('BOX_NOT_HERE');
@@ -147,11 +148,36 @@ public function testRender()
         $ghostscript
             ->setBinaryPath($this->binaryPath)
             ->setInputFile(__DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'MultiPageHorizontal.pdf')
-            ->setOutputFile($outputFile);       
+            ->setOutputFile($outputFile);
         $result = $ghostscript->render();
         $this->assertTrue(file_exists($outputFile));
         $this->assertEquals("image/jpeg", mime_content_type($outputFile));
         $this->assertTrue($result);
     }
 
-}
+    public function testMerging()
+    {
+        $outputFile = __DIR__ . DIRECTORY_SEPARATOR . 'output' . DIRECTORY_SEPARATOR . 'merge.pdf';
+        $ghostscript = new Ghostscript();
+        $ghostscript
+            ->setBinaryPath($this->binaryPath)
+            ->setDevice(DeviceTypes::PDF)
+            ->setInputFile(__DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'lorem.pdf')
+            ->setInputFile(__DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'ipsum.pdf')
+            ->setOutputFile($outputFile);
+        $result = $ghostscript->render();
+        $this->assertTrue(file_exists($outputFile));
+        $this->assertEquals("application/pdf", mime_content_type($outputFile));
+        $this->assertTrue($result);
+    }
+
+    public function testClearInputFiles()
+    {
+        $ghostscript = new Ghostscript();
+        $ghostscript->setInputFile(__DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'Helicopter.ps');
+        $this->assertEquals([__DIR__ . DIRECTORY_SEPARATOR . 'assets' . DIRECTORY_SEPARATOR . 'Helicopter.ps'], $ghostscript->getInputFiles());
+        $ghostscript->clearInputFiles();
+        $this->assertEquals([], $ghostscript->getInputFiles());
+    }
+
+}