Add stream_metadata to stream wrapper

This adds support for functions like `touch`.

src/Node/Directory.php

@@ -33,8 +33,8 @@ class Directory implements NodeContainerInterface
         $this->mode = self::TYPE_BLOCK & self::TYPE_DIR;
 
         $this->dateAccessed = new DateTime();
-        $this->dateCreated  = new DateTime();
-        $this->dateModified = new DateTime();
+        $this->dateCreated  = $this->dateAccessed;
+        $this->dateModified = $this->dateAccessed;
 
         foreach ($nodes as $name => $node) {
             $this->add($name, $node);
@@ -108,6 +108,14 @@ class Directory implements NodeContainerInterface
         return $this->dateAccessed;
     }
 
+    /**
+     * @param DateTime $dateTime
+     */
+    public function setDateAccessed(DateTime $dateTime)
+    {
+        $this->dateAccessed = $dateTime;
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -124,6 +132,14 @@ class Directory implements NodeContainerInterface
         return $this->dateModified;
     }
 
+    /**
+     * @param DateTime $dateTime
+     */
+    public function setDateModified(DateTime $dateTime)
+    {
+        $this->dateModified = $dateTime;
+    }
+
     /**
      * {@inheritdoc}
      */

src/Node/File.php

@@ -28,8 +28,8 @@ class File implements FileInterface
         $this->mode = self::TYPE_BLOCK & self::TYPE_FILE;
 
         $this->dateAccessed = new DateTime();
-        $this->dateCreated  = new DateTime();
-        $this->dateModified = new DateTime();
+        $this->dateCreated  = clone $this->dateAccessed;
+        $this->dateModified = clone $this->dateAccessed;
     }
 
     /**
@@ -56,6 +56,14 @@ class File implements FileInterface
         return $this->dateAccessed;
     }
 
+    /**
+     * @param DateTime $dateTime
+     */
+    public function setDateAccessed(DateTime $dateTime)
+    {
+        $this->dateAccessed = $dateTime;
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -72,6 +80,14 @@ class File implements FileInterface
         return $this->dateModified;
     }
 
+    /**
+     * @param DateTime $dateTime
+     */
+    public function setDateModified(DateTime $dateTime)
+    {
+        $this->dateModified = $dateTime;
+    }
+
     /**
      * {@inheritdoc}
      */

src/Node/NodeInterface.php

@@ -18,6 +18,11 @@ interface NodeInterface extends StatInterface
      */
     public function getDateAccessed();
 
+    /**
+     * @param DateTime $dateTime
+     */
+    public function setDateAccessed(DateTime $dateTime);
+
     /**
      * @return DateTime
      */
@@ -28,6 +33,11 @@ interface NodeInterface extends StatInterface
      */
     public function getDateModified();
 
+    /**
+     * @param DateTime $dateTime
+     */
+    public function setDateModified(DateTime $dateTime);
+
     /**
      * @return integer
      */

src/Stream/FileHandle.php

@@ -9,6 +9,7 @@
  */
 namespace Vfs\Stream;
 
+use DateTime;
 use Vfs\Exception\UnopenedHandleException;
 use Vfs\Node\FileInterface;
 use Vfs\Node\NodeContainerInterface;
@@ -89,6 +90,28 @@ class FileHandle extends AbstractHandle
         return substr($this->node->getContent(), $offset);
     }
 
+    /**
+     * @param  DateTime      $mtime
+     * @param  DateTime      $atime
+     * @return NodeInterface
+     */
+    public function touch(DateTime $mtime = null, DateTime $atime = null)
+    {
+        $node = $this->findOrBuildNode();
+
+        if (!$node) {
+            throw new UnopenedHandleException($this, $this->url);
+        }
+
+        $mtime = $mtime ?: new DateTime();
+        $atime = $atime ?: clone $mtime;
+
+        $node->setDateAccessed($atime);
+        $node->setDateModified($mtime);
+
+        return $node;
+    }
+
     /**
      * @param  string  $content
      * @return boolean

src/Stream/StreamWrapper.php

@@ -9,6 +9,7 @@
  */
 namespace Vfs\Stream;
 
+use DateTime;
 use Vfs\Node\LinkInterface;
 use Vfs\FileSystemRegistry;
 
@@ -132,6 +133,28 @@ class StreamWrapper
         return true; // Non-buffered writing
     }
 
+    /**
+     * @param string $url
+     * @param integer $option
+     * @param mixed $args
+     * @return boolean
+     */
+    public function stream_metadata($url, $option, $args)
+    {
+        if (STREAM_META_TOUCH === $option) {
+            $this->handle = $this->buildFileHandle($url, HandleInterface::MODE_WRITE_NEW);
+
+            $mtime = isset($args[0]) ? new DateTime(sprintf('@%s', $args[0])) : null;
+            $atime = isset($args[1]) ? new DateTime(sprintf('@%s', $args[1])) : $mtime;
+
+            $this->handle->touch($mtime, $atime);
+
+            return true;
+        }
+
+        return false;
+    }
+
     /**
      * @param  string  $url
      * @param  string  $mode

test/unit/Stream/FileHandleTest.php

@@ -44,6 +44,15 @@ class FileHandleTest extends UnitTestCase
         ];
     }
 
+    public function dataTouch()
+    {
+        return [
+            ['a'], ['ab'], ['a+'], ['at'],
+            ['w'], ['wb'], ['w+'], ['wt'],
+            ['c'], ['cb'], ['c+'], ['ct']
+        ];
+    }
+
     public function testInterface()
     {
         $handle = new FileHandle($this->fs, '');
@@ -261,4 +270,52 @@ class FileHandleTest extends UnitTestCase
 
         $handle->write('');
     }
+
+    /**
+     * @dataProvider dataTouch
+     */
+    public function testTouch($mode)
+    {
+        $handle = new FileHandle($this->fs, 'foo://bar', $mode);
+        $atime = Mockery::mock('DateTime');
+        $mtime = Mockery::mock('DateTime');
+
+        $file = Mockery::mock('Vfs\Node\FileInterface');
+        $file->shouldReceive('setDateAccessed')->once()->with($atime);
+        $file->shouldReceive('setDateModified')->once()->with($mtime);
+
+        $factory = Mockery::mock('Vfs\Node\Factory\NodeFactoryInterface');
+        $factory->shouldReceive('buildFile')->once()->withNoArgs()->andReturn($file);
+
+        $root = Mockery::mock('Vfs\Node\NodeContainerInterface');
+        $root->shouldReceive('set')->once()->with('bar', $file);
+
+        $this->fs->shouldReceive('get')->once()->with('/')->andReturn($root);
+        $this->fs->shouldReceive('get')->once()->with('/bar');
+        $this->fs->shouldReceive('getNodeFactory')->once()->withNoArgs()->andReturn($factory);
+
+        $node = $handle->touch($mtime, $atime);
+
+        $this->assertSame($file, $node);
+    }
+
+    /**
+     * @dataProvider dataTouch
+     */
+    public function testTouchExistingFile($mode)
+    {
+        $handle = new FileHandle($this->fs, 'foo://bar', $mode);
+        $atime = Mockery::mock('DateTime');
+        $mtime = Mockery::mock('DateTime');
+
+        $file = Mockery::mock('Vfs\Node\FileInterface');
+        $file->shouldReceive('setDateAccessed')->once()->with($atime);
+        $file->shouldReceive('setDateModified')->once()->with($mtime);
+
+        $this->fs->shouldReceive('get')->once()->with('/bar')->andReturn($file);
+
+        $node = $handle->touch($mtime, $atime);
+
+        $this->assertSame($file, $node);
+    }
 }