core-bundle/src/Resources/contao/drivers/DC_Folder.php
public function copy($source=null, $destination=null)
	{
		if ($GLOBALS['TL_DCA'][$this->strTable]['config']['notCopyable'])
		{
			throw new InternalServerErrorException('Table "' . $this->strTable . '" is not copyable.');
		}

		$strFolder = Input::get('pid', true);
		$blnDoNotRedirect = ($source !== null);

		if ($source === null)
		{
			$source = $this->intId;
		}

		if ($destination === null)
		{
			$destination = str_replace(\dirname($source), $strFolder, $source);
		}

		$this->isValid($source);
		$this->isValid($destination);

		if (!file_exists($this->strRootDir . '/' . $source) || !$this->isMounted($source))
		{
			throw new AccessDeniedException('File or folder "' . $source . '" is not mounted or cannot be found.');
		}

		if (!file_exists($this->strRootDir . '/' . $strFolder) || !$this->isMounted($strFolder))
		{
			throw new AccessDeniedException('Parent folder "' . $strFolder . '" is not mounted or is not a directory.');
		}

		// Avoid a circular reference
		if (preg_match('/^' . preg_quote($source, '/') . '/i', $strFolder))
		{
			throw new InternalServerErrorException('Attempt to copy the folder "' . $source . '" to "' . $strFolder . '" (circular reference).');
		}

		/** @var Session $objSession */
		$objSession = System::getContainer()->get('session');

		// Empty clipboard
		$arrClipboard = $objSession->get('CLIPBOARD');
		$arrClipboard[$this->strTable] = array();
		$objSession->set('CLIPBOARD', $arrClipboard);

		$this->import(Files::class, 'Files');

		// Copy folders
		if (is_dir($this->strRootDir . '/' . $source))
		{
			$count = 1;
			$new = $destination;

			// Add a suffix if the folder exists
			while (is_dir($this->strRootDir . '/' . $new) && $count < 12)
			{
				$new = $destination . '_' . $count++;
			}

			$destination = $new;
			$this->Files->rcopy($source, $destination);
		}

		// Copy a file
		else
		{
			$count = 1;
			$new = $destination;
			$ext = strtolower(substr($destination, strrpos($destination, '.') + 1));

			// Add a suffix if the file exists
			while (file_exists($this->strRootDir . '/' . $new) && $count < 12)
			{
				$new = str_replace('.' . $ext, '_' . $count++ . '.' . $ext, $destination);
			}

			$destination = $new;
			$this->Files->copy($source, $destination);
		}

		// Update the database AFTER the file has been copied
		if ($this->blnIsDbAssisted)
		{
			$syncSource = Dbafs::shouldBeSynchronized($source);
			$syncTarget = Dbafs::shouldBeSynchronized($destination);

			if ($syncSource && $syncTarget)
			{
				Dbafs::copyResource($source, $destination);
			}
			elseif ($syncTarget)
			{
				Dbafs::addResource($destination);
			}
		}

		// Call the oncopy_callback
		if (\is_array($GLOBALS['TL_DCA'][$this->strTable]['config']['oncopy_callback']))
		{
			foreach ($GLOBALS['TL_DCA'][$this->strTable]['config']['oncopy_callback'] as $callback)
			{
				if (\is_array($callback))
				{
					$this->import($callback[0]);
					$this->{$callback[0]}->{$callback[1]}($source, $destination, $this);
				}
				elseif (\is_callable($callback))
				{
					$callback($source, $destination, $this);
				}
			}
		}

		// Add a log entry
		$this->log('File or folder "'.$source.'" has been copied to "'.$destination.'"', __METHOD__, TL_FILES);

		// Redirect
		if (!$blnDoNotRedirect)
		{
			// Switch to edit mode
			if (is_file($this->strRootDir . '/' . $destination))
			{
				$this->redirect($this->switchToEdit($destination));
			}

			$this->redirect($this->getReferer());
		}
	}
public function copy($source=null, $destination=null)
	{
		if ($GLOBALS['TL_DCA'][$this->strTable]['config']['notCopyable'])
		{
			throw new InternalServerErrorException('Table "' . $this->strTable . '" is not copyable.');
		}

		$strFolder = Input::get('pid', true);
		$blnDoNotRedirect = ($source !== null);

		if ($source === null)
		{
			$source = $this->intId;
		}

		if ($destination === null)
		{
			$destination = str_replace(\dirname($source), $strFolder, $source);
		}

		$this->isValid($source);
		$this->isValid($destination);

		if (!file_exists($this->strRootDir . '/' . $source) || !$this->isMounted($source))
		{
			throw new AccessDeniedException('File or folder "' . $source . '" is not mounted or cannot be found.');
		}

		if (!file_exists($this->strRootDir . '/' . $strFolder) || !$this->isMounted($strFolder))
		{
			throw new AccessDeniedException('Parent folder "' . $strFolder . '" is not mounted or is not a directory.');
		}

		// Avoid a circular reference
		if (preg_match('/^' . preg_quote($source, '/') . '/i', $strFolder))
		{
			throw new InternalServerErrorException('Attempt to copy the folder "' . $source . '" to "' . $strFolder . '" (circular reference).');
		}

		/** @var Session $objSession */
		$objSession = System::getContainer()->get('session');

		// Empty clipboard
		$arrClipboard = $objSession->get('CLIPBOARD');
		$arrClipboard[$this->strTable] = array();
		$objSession->set('CLIPBOARD', $arrClipboard);

		$this->import(Files::class, 'Files');

		// Copy folders
		if (is_dir($this->strRootDir . '/' . $source))
		{
			$count = 1;
			$new = $destination;

			// Add a suffix if the folder exists
			while (is_dir($this->strRootDir . '/' . $new) && $count < 12)
			{
				$new = $destination . '_' . $count++;
			}

			$destination = $new;
			$this->Files->rcopy($source, $destination);
		}

		// Copy a file
		else
		{
			$count = 1;
			$new = $destination;
			$ext = strtolower(substr($destination, strrpos($destination, '.') + 1));

			// Add a suffix if the file exists
			while (file_exists($this->strRootDir . '/' . $new) && $count < 12)
			{
				$new = str_replace('.' . $ext, '_' . $count++ . '.' . $ext, $destination);
			}

			$destination = $new;
			$this->Files->copy($source, $destination);
		}

		// Update the database AFTER the file has been copied
		if ($this->blnIsDbAssisted)
		{
			$syncSource = Dbafs::shouldBeSynchronized($source);
			$syncTarget = Dbafs::shouldBeSynchronized($destination);

			if ($syncSource && $syncTarget)
			{
				Dbafs::copyResource($source, $destination);
			}
			elseif ($syncTarget)
			{
				Dbafs::addResource($destination);
			}
		}

		// Call the oncopy_callback
		if (\is_array($GLOBALS['TL_DCA'][$this->strTable]['config']['oncopy_callback']))
		{
			foreach ($GLOBALS['TL_DCA'][$this->strTable]['config']['oncopy_callback'] as $callback)
			{
				if (\is_array($callback))
				{
					$this->import($callback[0]);
					$this->{$callback[0]}->{$callback[1]}($source, $destination, $this);
				}
				elseif (\is_callable($callback))
				{
					$callback($source, $destination, $this);
				}
			}
		}

		// Add a log entry
		$this->log('File or folder "'.$source.'" has been copied to "'.$destination.'"', __METHOD__, TL_FILES);

		// Redirect
		if (!$blnDoNotRedirect)
		{
			// Switch to edit mode
			if (is_file($this->strRootDir . '/' . $destination))
			{
				$this->redirect($this->switchToEdit($destination));
			}

			$this->redirect($this->getReferer());
		}
	}
Recursively duplicate files and folders

@param string $source
@param string $destination

@throws AccessDeniedException
@throws InternalServerErrorException