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<?php |
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|
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namespace Minify\StaticService; |
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|
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/** |
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* Build a URI for the static cache |
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* |
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* @param string $static_uri E.g. "/min/static" |
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* @param string $query E.g. "b=scripts&f=1.js,2.js" |
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* @param string $type "css" or "js" |
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* @return string |
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*/ |
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function build_uri($static_uri, $query, $type) |
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{ |
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$static_uri = rtrim($static_uri, '/'); |
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$query = ltrim($query, '?'); |
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|
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$ext = ".$type"; |
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if (substr($query, - strlen($ext)) !== $ext) { |
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$query .= "&z=$ext"; |
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} |
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|
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$cache_time = get_cache_time(); |
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|
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return "$static_uri/$cache_time/$query"; |
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} |
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|
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/** |
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* Get the name of the current cache directory within static/. E.g. "1467089473" |
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* |
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* @param bool $auto_create Automatically create the directory if missing? |
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* @return null|string null if missing or can't create |
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*/ |
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function get_cache_time($auto_create = true) |
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{ |
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foreach (scandir(__DIR__) as $entry) { |
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if (ctype_digit($entry)) { |
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return $entry; |
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break; |
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} |
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} |
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|
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if (!$auto_create) { |
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return null; |
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} |
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|
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$time = (string)time(); |
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if (!mkdir(__DIR__ . "/$time")) { |
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return null; |
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} |
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|
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return $time; |
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} |
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|
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function flush_cache() |
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{ |
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$time = get_cache_time(false); |
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if ($time) { |
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remove_tree(__DIR__ . "/$time"); |
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} |
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} |
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|
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function remove_tree($dir) |
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{ |
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$files = array_diff(scandir($dir), array('.', '..')); |
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|
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foreach ($files as $file) { |
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is_dir("$dir/$file") ? remove_tree("$dir/$file") : unlink("$dir/$file"); |
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} |
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|
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return rmdir($dir); |
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} |
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|
