/**
* Prepare safe profile alias.
*
* @param string $alias
* @param int $userId
*
* @return string
*/
public static function safeAlias($alias, $userId = 0)
{
$filter = new \JFilterInput();
$alias = \JString::strtolower($filter->clean($alias, 'ALNUM'));
// Check for valid alias.
$aliasValidator = new Validator\Profile\Alias(\JFactory::getDbo(), $alias, $userId);
if (!$aliasValidator->isValid()) {
if (!$alias) {
$alias = StringHelper::generateRandomString(16);
} else {
$alias .= mt_rand(10, 1000);
}
}
return $alias;
}
/**
* Resize the temporary file to new one.
*
* <code>
* $image = $this->input->files->get('media', array(), 'array');
* $rootFolder = "/root/joomla/tmp";
*
* $resizeOptions = array(
* 'width' => $options['thumb_width'],
* 'height' => $options['thumb_height'],
* 'scale' => $options['thumb_scale']
* );
*
* $file = new Prism\File\Image($image, $rootFolder);
*
* $file->upload();
* $fileData = $file->resize($resize);
* </code>
*
* @param array $options
* @param bool $replace Replace the original file with the new one.
* @param string $prefix Filename prefix.
*
* @throws \RuntimeException
*
* @return array
*/
public function resize(array $options, $replace = false, $prefix = '')
{
if (!$this->file) {
throw new \RuntimeException(\JText::sprintf('LIB_PRISM_ERROR_FILE_NOT_FOUND_S', $this->file));
}
// Resize image.
$image = new \JImage();
$image->loadFile($this->file);
if (!$image->isLoaded()) {
throw new \RuntimeException(\JText::sprintf('LIB_PRISM_ERROR_FILE_NOT_FOUND_S', $this->file));
}
// Resize to general size.
$width = ArrayHelper::getValue($options, 'width', 640);
$width = $width < 50 ? 50 : $width;
$height = ArrayHelper::getValue($options, 'height', 480);
$height = $height < 50 ? 50 : $height;
$scale = ArrayHelper::getValue($options, 'scale', \JImage::SCALE_INSIDE);
$image->resize($width, $height, false, $scale);
// Generate new name.
$generatedName = StringHelper::generateRandomString($this->options->get('filename_length', 16)) . '.png';
if (is_string($prefix) and $prefix !== '') {
$generatedName = $prefix . $generatedName;
}
$file = \JPath::clean($this->rootFolder . '/' . $generatedName);
// Store to file.
$image->toFile($file, IMAGETYPE_PNG);
if ($replace) {
\JFile::delete($this->file);
$this->file = $file;
}
// Prepare meta data about the file.
$fileData = array('filename' => $generatedName, 'filepath' => $file, 'type' => 'image');
$fileData = array_merge($fileData, $this->prepareImageProperties($this->file));
return $fileData;
}
