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<?php |
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namespace hipanel\helpers; |
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use Yii; |
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use yii\base\InvalidParamException; |
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class FileHelper extends \yii\helpers\FileHelper |
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{ |
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/** |
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* Returns the MIME-type of content in string |
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* @param string $content |
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* @return string Content mime-type |
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*/ |
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public static function getContentMimeType($content) |
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{ |
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$finfo = finfo_open(FILEINFO_MIME_TYPE); |
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$mimeType = finfo_buffer($finfo, $content); |
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finfo_close($finfo); |
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return $mimeType; |
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} |
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/** |
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* Builds path to the file $filename under the $directory with additional sub-directories. |
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* For example, the $directory is `/var/log/yii`, the $filename is `f0527.jpg`. |
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* Calling this method without passing optional parameters, will generate the following path: |
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* `/var/log/yii/f0/f0527.jpg`. |
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* Setting $nests to `2`, the path will look like `/var/log/yii/f0/52/f0527.jpg` |
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* Setting $nests to `3` and $length to `1` you will get `/var/log/yii/f/0/5/f0527.jpg`. |
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* |
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* It is strongly recommended to pass only hashes as $filename in order be sure that length is enough. |
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* |
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* @param string $directory Path to the base directory |
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* @param string $filename The file name |
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* @param int $nests Number of nested directories |
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* @param int $length Length of the nested directory name |
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* @return string |
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* @throws InvalidParamException filename does not contain enough characters for directory nesting |
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*/ |
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public static function getPrefixedPath($directory, $filename, $nests = 1, $length = 2) |
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{ |
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if (strlen(basename($filename)) < $nests * $length) { |
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throw new InvalidParamException('Filename does not contain enough characters for directory nesting'); |
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} |
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for ($start = 0; $start < $nests * $length; $start += $length) { |
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$level = substr($filename, $start, $length); |
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$directory .= DIRECTORY_SEPARATOR . $level; |
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} |
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$directory .= DIRECTORY_SEPARATOR . $filename; |
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return Yii::getAlias($directory); |
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} |
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} |
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hiqdev /
hipanel-core
