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<?php |
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namespace Germania\AssetTimestamper; |
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class AssetTimestamper |
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{ |
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/** |
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* @var string |
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*/ |
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public $base_path; |
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/** |
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* Timestamp format to use. |
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* |
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* @see http://php.net/manual/de/function.date.php |
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* @var string |
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*/ |
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public $format = 'YmdHis'; |
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/** |
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* Separator sign that preceeds the timestamp |
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* @var string |
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*/ |
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public $separator = '.'; |
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/** |
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* @param string $base_path Optional: Base path, default: Current work dir. |
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* @uses $base_path |
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*/ |
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public function __construct( $base_path = null ) |
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{ |
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$this->base_path = $base_path ?: getcwd(); |
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} |
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/** |
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* @return string |
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* @uses $base_path |
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*/ |
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public function getBasePath() |
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{ |
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return $this->base_path; |
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} |
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/** |
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* @param string $asset Asset URL |
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* @return string Timestamped Asset URL |
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* @uses $base_path |
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*/ |
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public function __invoke( $asset ) |
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{ |
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// Parse asset URL |
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$asset_parts = parse_url( $asset ); |
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// Exclude if asset seems to come from different location, |
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// i.e. if it has defined hostname |
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if (is_array($asset_parts) |
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&& !empty($asset_parts['host'])) { |
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return $asset; |
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} |
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// Prepend DIRECTORY_SEPARATOR if missing |
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$work_asset = (substr($asset, 0, strlen(\DIRECTORY_SEPARATOR)) === \DIRECTORY_SEPARATOR) |
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? $asset |
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: \DIRECTORY_SEPARATOR . $asset; |
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// Glue base path and asset; throw if file not existant |
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if (!$real_file = realpath($this->base_path . $work_asset)) { |
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return $asset; |
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} |
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$result = $this->buildTimestampedPath($asset, $real_file); |
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return $result; |
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} |
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/** |
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* @param string $asset Asset path |
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* @param string $real_file Real file path |
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* @return string The timestamped asset file name |
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*/ |
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public function buildTimestampedPath($asset, $real_file) |
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{ |
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// Build result |
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$timestamp = date( $this->format, filemtime( $real_file )); |
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$path_info = pathinfo( $asset ); |
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$result = str_replace( |
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$path_info['basename'], |
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join( "", [ |
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$path_info['filename'], |
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$this->separator, |
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$timestamp, |
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".", |
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$path_info['extension'] |
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]), |
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$asset |
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); |
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return $result; |
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} |
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} |
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GermaniaKG /
AssetTimestamper
