/**
* Check if a file exists in the include path
* And if it does, return the absolute path.
* @method realPath
* @static
* @param {string} $filename
* Name of the file to look for
* @param {boolean} $ignoreCache=false
* Defaults to false. If true, then this function ignores
* the cached value, if any, and attempts to search
* for the file. It will cache the new value.
* @return {string|false}
* The absolute path if file exists, false if it does not
*/
static function realPath($filename, $ignoreCache = false)
{
$filename = str_replace('/', DS, $filename);
if (!$ignoreCache) {
// Try the extended cache mechanism, if any
$result = Q::event('Q/realPath', array(), 'before');
if (isset($result)) {
return $result;
}
// Try the native cache mechanism
$result = Q_Cache::get("Q::realPath\t{$filename}");
if (isset($result)) {
return $result;
}
}
// Do a search for the file
$paths = explode(PS, get_include_path());
array_unshift($paths, "");
$result = false;
foreach ($paths as $path) {
if (substr($path, -1) == DS) {
$fullpath = $path . $filename;
} else {
$fullpath = ($path ? $path . DS : "") . $filename;
}
// Note: the following call to the OS may take some time:
$realpath = realpath($fullpath);
if ($realpath && file_exists($realpath)) {
$result = $realpath;
break;
}
}
// Notify the cache mechanism, if any
Q_Cache::set("Q::realPath\t{$filename}", $result);
/**
* @event Q/realPath {after}
* @param {string} $result
*/
Q::event('Q/realPath', compact('result'), 'after');
return $result;
}
/**
* Saves parameters to a file
* @method save
* @param {string} $filename Name of file to save to. If tree was loaded, you can leave this blank to update that file.
* @param {array} [$array_path=array()] Array of keys identifying the path of the config subtree to save
* @return {boolean} Returns true if saved, otherwise false;
**/
function save($filename = null, $array_path = array(), $prefix_path = null)
{
if (empty($filename) and !empty($this->filename)) {
$filename = $this->filename;
}
if (!($filename2 = Q::realPath($filename))) {
$filename2 = $filename;
}
if (empty($array_path)) {
$array_path = array();
$toSave = $this->parameters;
} else {
$array_path[] = null;
$toSave = call_user_func_array(array($this, 'get'), $array_path);
}
if (is_null($prefix_path)) {
$prefix_path = $array_path;
}
$prefix_path = array_reverse($prefix_path);
foreach ($prefix_path as $ap) {
if ($ap) {
$toSave = array($ap => $toSave);
}
}
$mask = umask(Q_Config::get('Q', 'internal', 'umask', 00));
$success = file_put_contents($filename2, !empty($toSave) ? Q::json_encode($toSave, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) : '{}', LOCK_EX);
clearstatcache(true, $filename2);
umask($mask);
if ($success) {
self::$cache[$filename] = $toSave;
Q_Cache::set("Q_Tree\t{$filename}", $toSave);
// no need to check result - on failure Q_Cache is disabled
}
return $success;
}
/**
* Get contents of config file
* Config file is searched in APP_DIR/files forder. If config server url is defined
* the filename is searched on config server
* @method getFromServer
* @static
* @param {string} $filename The name of the config file. If config server is defined, file is got from there
* @return {array} The loaded tree
*/
static function getFromServer($filename)
{
if ($cs = self::serverInfo()) {
// check Q_Cache and if set - use it
// update class cache as it is not set
$arr = Q_Cache::get("Q_Config\t{$filename}");
if (isset($arr)) {
$tree = new Q_Tree();
$tree->merge($arr);
return $tree->getAll();
}
// request config server
if (!empty($cs['url'])) {
if (!empty($cs['internal'])) {
// query "internal" Qbix server
$return = Q_Utils::queryInternal('Q/Config', array('Q/method' => 'get', 'filename' => $filename), $cs['url']);
} else {
// query "external" Qbix server
$return = Q_Utils::queryExternal('Q/Config', array('Q/method' => 'get', 'filename' => $filename), $cs['url']);
}
Q_Cache::set("Q_Config\t{$filename}", $return);
return $return;
}
}
// take local file, return empty tree if file does not exists
$tree = new Q_Tree();
if (defined('APP_DIR')) {
$filename = APP_DIR . DS . 'files' . DS . $filename;
} else {
throw new Q_Exception("'APP_DIR' is not defined");
}
$tree->load($filename);
return $tree->getAll();
}
