core-bundle/src/Resources/contao/classes/Theme.php
public function importTheme()
	{
		/** @var FileUpload $objUploader */
		$objUploader = new FileUpload();

		if (Input::post('FORM_SUBMIT') == 'tl_theme_import')
		{
			/** @var Session $objSession */
			$objSession = System::getContainer()->get('session');

			if (!Input::post('confirm'))
			{
				$arrUploaded = $objUploader->uploadTo('system/tmp');

				if (empty($arrUploaded))
				{
					Message::addError($GLOBALS['TL_LANG']['ERR']['all_fields']);
					$this->reload();
				}

				$arrFiles = array();

				foreach ($arrUploaded as $strFile)
				{
					// Skip folders
					if (is_dir($this->strRootDir . '/' . $strFile))
					{
						Message::addError(sprintf($GLOBALS['TL_LANG']['ERR']['importFolder'], basename($strFile)));
						continue;
					}

					$objFile = new File($strFile);

					// Skip anything but .cto files
					if ($objFile->extension != 'cto')
					{
						Message::addError(sprintf($GLOBALS['TL_LANG']['ERR']['filetype'], $objFile->extension));
						continue;
					}

					$arrFiles[] = $strFile;
				}
			}
			else
			{
				$arrFiles = explode(',', $objSession->get('uploaded_themes'));
			}

			// Check whether there are any files
			if (empty($arrFiles))
			{
				Message::addError($GLOBALS['TL_LANG']['ERR']['all_fields']);
				$this->reload();
			}

			// Store the field names of the theme tables
			$arrDbFields = array
			(
				'tl_files'           => $this->Database->getFieldNames('tl_files'),
				'tl_theme'           => $this->Database->getFieldNames('tl_theme'),
				'tl_style_sheet'     => $this->Database->getFieldNames('tl_style_sheet'),
				'tl_style'           => $this->Database->getFieldNames('tl_style'),
				'tl_module'          => $this->Database->getFieldNames('tl_module'),
				'tl_layout'          => $this->Database->getFieldNames('tl_layout'),
				'tl_image_size'      => $this->Database->getFieldNames('tl_image_size'),
				'tl_image_size_item' => $this->Database->getFieldNames('tl_image_size_item')
			);

			// Proceed
			if (Input::post('confirm') == 1)
			{
				$this->extractThemeFiles($arrFiles, $arrDbFields);
			}
			else
			{
				$objSession->set('uploaded_themes', implode(',', $arrFiles));

				return $this->compareThemeFiles($arrFiles, $arrDbFields);
			}
		}

		// Return the form
		return Message::generate() . '
<div id="tl_buttons">
<a href="'.ampersand(str_replace('&key=importTheme', '', Environment::get('request'))).'" class="header_back" title="'.StringUtil::specialchars($GLOBALS['TL_LANG']['MSC']['backBTTitle']).'" accesskey="b">'.$GLOBALS['TL_LANG']['MSC']['backBT'].'</a>
</div>
<form action="'.ampersand(Environment::get('request'), true).'" id="tl_theme_import" class="tl_form tl_edit_form" method="post" enctype="multipart/form-data">
<div class="tl_formbody_edit">
<input type="hidden" name="FORM_SUBMIT" value="tl_theme_import">
<input type="hidden" name="REQUEST_TOKEN" value="'.REQUEST_TOKEN.'">
<input type="hidden" name="MAX_FILE_SIZE" value="'.Config::get('maxFileSize').'">

<div class="tl_tbox">
  <div class="widget">
    <h3>'.$GLOBALS['TL_LANG']['tl_theme']['source'][0].'</h3>'.$objUploader->generateMarkup().(isset($GLOBALS['TL_LANG']['tl_theme']['source'][1]) ? '
    <p class="tl_help tl_tip">'.$GLOBALS['TL_LANG']['tl_theme']['source'][1].'</p>' : '').'
  </div>
</div>

</div>

<div class="tl_formbody_submit">

<div class="tl_submit_container">
  <button type="submit" name="save" id="save" class="tl_submit" accesskey="s">'.$GLOBALS['TL_LANG']['tl_theme']['importTheme'][0].'</button>
</div>

</div>
</form>';
	}
public function importTheme()
	{
		/** @var FileUpload $objUploader */
		$objUploader = new FileUpload();

		if (Input::post('FORM_SUBMIT') == 'tl_theme_import')
		{
			/** @var Session $objSession */
			$objSession = System::getContainer()->get('session');

			if (!Input::post('confirm'))
			{
				$arrUploaded = $objUploader->uploadTo('system/tmp');

				if (empty($arrUploaded))
				{
					Message::addError($GLOBALS['TL_LANG']['ERR']['all_fields']);
					$this->reload();
				}

				$arrFiles = array();

				foreach ($arrUploaded as $strFile)
				{
					// Skip folders
					if (is_dir($this->strRootDir . '/' . $strFile))
					{
						Message::addError(sprintf($GLOBALS['TL_LANG']['ERR']['importFolder'], basename($strFile)));
						continue;
					}

					$objFile = new File($strFile);

					// Skip anything but .cto files
					if ($objFile->extension != 'cto')
					{
						Message::addError(sprintf($GLOBALS['TL_LANG']['ERR']['filetype'], $objFile->extension));
						continue;
					}

					$arrFiles[] = $strFile;
				}
			}
			else
			{
				$arrFiles = explode(',', $objSession->get('uploaded_themes'));
			}

			// Check whether there are any files
			if (empty($arrFiles))
			{
				Message::addError($GLOBALS['TL_LANG']['ERR']['all_fields']);
				$this->reload();
			}

			// Store the field names of the theme tables
			$arrDbFields = array
			(
				'tl_files'           => $this->Database->getFieldNames('tl_files'),
				'tl_theme'           => $this->Database->getFieldNames('tl_theme'),
				'tl_style_sheet'     => $this->Database->getFieldNames('tl_style_sheet'),
				'tl_style'           => $this->Database->getFieldNames('tl_style'),
				'tl_module'          => $this->Database->getFieldNames('tl_module'),
				'tl_layout'          => $this->Database->getFieldNames('tl_layout'),
				'tl_image_size'      => $this->Database->getFieldNames('tl_image_size'),
				'tl_image_size_item' => $this->Database->getFieldNames('tl_image_size_item')
			);

			// Proceed
			if (Input::post('confirm') == 1)
			{
				$this->extractThemeFiles($arrFiles, $arrDbFields);
			}
			else
			{
				$objSession->set('uploaded_themes', implode(',', $arrFiles));

				return $this->compareThemeFiles($arrFiles, $arrDbFields);
			}
		}

		// Return the form
		return Message::generate() . '
<div id="tl_buttons">
<a href="'.ampersand(str_replace('&key=importTheme', '', Environment::get('request'))).'" class="header_back" title="'.StringUtil::specialchars($GLOBALS['TL_LANG']['MSC']['backBTTitle']).'" accesskey="b">'.$GLOBALS['TL_LANG']['MSC']['backBT'].'</a>
</div>
<form action="'.ampersand(Environment::get('request'), true).'" id="tl_theme_import" class="tl_form tl_edit_form" method="post" enctype="multipart/form-data">
<div class="tl_formbody_edit">
<input type="hidden" name="FORM_SUBMIT" value="tl_theme_import">
<input type="hidden" name="REQUEST_TOKEN" value="'.REQUEST_TOKEN.'">
<input type="hidden" name="MAX_FILE_SIZE" value="'.Config::get('maxFileSize').'">

<div class="tl_tbox">
  <div class="widget">
    <h3>'.$GLOBALS['TL_LANG']['tl_theme']['source'][0].'</h3>'.$objUploader->generateMarkup().(isset($GLOBALS['TL_LANG']['tl_theme']['source'][1]) ? '
    <p class="tl_help tl_tip">'.$GLOBALS['TL_LANG']['tl_theme']['source'][1].'</p>' : '').'
  </div>
</div>

</div>

<div class="tl_formbody_submit">

<div class="tl_submit_container">
  <button type="submit" name="save" id="save" class="tl_submit" accesskey="s">'.$GLOBALS['TL_LANG']['tl_theme']['importTheme'][0].'</button>
</div>

</div>
</form>';
	}
Import a theme

@return string