/**
* Set the specified key to the specified value.
*
* @param string $filename The key of the cached data
* @param string $data The value to storage against the key, this data must be JSON serializable
*
* @return void
*/
public static function set($filename, $data)
{
$filename = static::path($filename);
Json::encodeToFile($filename, $data);
}
/**
* Get all defined environment variables.
*
* @return array
*/
public static function getVars()
{
if (!is_array(static::$vars)) {
$path = static::path("data/env.json");
try {
$vars = Json::decodeFromFile($path);
} catch (\Exception $e) {
$vars = [];
}
static::$vars = Helper::toArray($vars);
}
return static::$vars;
}
public function orderBy($col, $desc = null)
{
# Check if the data has already been sorted by this column
$sorted = Json::decodeFromFile($this->dir . "/.sorted");
$this->indexMap = $sorted[$col];
# If the data hasn't already been sorted then create an index map for it now
if (!is_array($this->indexMap)) {
$sort = [];
$pos = 0;
$this->seek(0);
while ($row = $this->fetch()) {
$sort[$pos] = $row[$col];
$pos++;
}
$this->seek(0);
asort($sort);
$this->indexMap = array_keys($sort);
$sorted[$col] = $this->indexMap;
Json::encodeToFile($this->dir . "/.sorted", $sorted);
}
if ($desc) {
$this->indexMap = array_reverse($this->indexMap);
}
return true;
}
