/**
* 取得一个数据数据库连接对象
*
* @param mix $params
* @return object
*/
public static function get($db = 'default', $new = false)
{
if (empty($db)) {
$db = 'default';
}
$configs = Hi_Store::get('config')->db->{$db};
if (empty($configs)) {
throw new Hi_Db_Exception('没有找到对应的数据库配置');
}
foreach ($configs as $cs) {
$params[] = get_object_vars($cs);
}
//为每个数据库链接分配key
$key = 'db-' . md5(serialize($params));
//如果不强制新建连接，从连接缓存中选取
if (!$new) {
$db = Hi_Store::get($key);
if ($db instanceof Hi_Db_Adapter_Abstract) {
return $db;
}
}
try {
if (!is_array($params)) {
throw new Hi_Db_Exception('数据库配置错误');
}
$adapter = ucwords($params[0]['type']);
$adapterClass = "Hi_Db_Adapter_{$adapter}";
$adapter = new $adapterClass($params);
Hi_Store::set($key, $adapter);
return $adapter;
} catch (Hi_Db_Exception $e) {
throw $e;
}
}
/**
* 初始化应用
*
* @param string $path
*/
private function _setApp($path)
{
$this->_checkPath($path);
$path .= DS;
$cf = $path . 'config.xml';
$config = new Hi_Config($cf);
Hi_Store::set('config', $config);
$classPath = $path . DS . 'class';
Hi_Env::$PATH_APP = $path;
Hi_Env::$PATH_CLASS = $classPath;
$incPath = $classPath . PS . get_include_path();
set_include_path($incPath);
if (isset($config->timezone)) {
date_default_timezone_set($config->timezone);
}
Hi_Env::$ENTRY_FILE = $_SERVER['SCRIPT_FILENAME'];
Hi_Env::$APPID = $config->appid;
Hi_Env::$DEBUG = (bool) $config->debug;
Hi_Env::$DEBUG = $config->debug == 'on' || $config->debug == 'true';
Hi_Env::$CACHEABLE = $config->cacheable != 'false' || !empty($config->cacheable);
//设置全局的临时文件路径、缓存路径、日志路径
$tmpPath = $config->tmp;
if (empty($tmpPath)) {
$tmpPath = sys_get_temp_dir();
}
$tmpPath = Hi_Tool_Dir::standard($tmpPath);
if (substr($tmpPath, -1) != DS) {
$tmpPath .= DS;
}
Hi_Env::$PATH_TMP = $tmpPath;
$cachePath = $config->cache;
if (empty($cachePath)) {
$cachePath = $tmpPath . 'cache' . DS . Hi_Env::$APPID;
}
Hi_Tool_Dir::create($cachePath);
Hi_Env::$PATH_CACHE = $cachePath;
$logPath = $config->log;
if (empty($logPath)) {
$logPath = $tmpPath . 'logs';
}
Hi_Env::$PATH_LOG = $logPath;
}
/**
* 构造一个缓存对象
*
* @param string $type 缓存的类型，当前memcached和file可选
* @param array $options
* @throws Hi_Cache_Exception
*/
public function __construct($type = 'file', $options = array())
{
$ts = array('file', 'memcached');
$type = strtolower($type);
if (!in_array($type, $ts, true)) {
throw new Hi_Cache_Exception('The cache type is "file" or "memcached"');
}
if ($type == 'memcached') {
$options['appid'] = Hi_Env::$APPID;
}
$cacheClass = 'Hi_Cache_' . ucwords($type);
$options['type'] = $type;
$key = md5(serialize($options));
$this->_backend = Hi_Store::get($key);
if ($this->_backend instanceof $cacheClass) {
return;
}
$this->_backend = new $cacheClass($options);
Hi_Store::set($key, $this->_backend);
}
/**
* 注册一个modifier
*
* @param string $modifier
* @param array $callback
*/
public function createModifier($modifier, $callback)
{
if (!preg_match('/^[_a-z]([_a-z0-9])*$/i', $modifier)) {
throw new Hi_View_Exception('modifier的名称由字母、数字和下划线组成，并且以下划线或者字母开头');
}
if (!is_array($callback) || sizeof($callback) != 2) {
throw new Hi_View_Exception('无效的callback');
}
$key = 'Hi_View_Modifier_' . $modifier;
Hi_Store::set($key, $callback);
$func = 'smarty_modifier_' . $modifier;
$meta = '
function ' . $func . '(){
$modifier = Hi_Store::get("' . $key . '");
$args = func_get_args();
return call_user_func_array($modifier, $args);
}
';
eval($meta);
$this->register_modifier($modifier, $func);
}
public function __construct($action)
{
$this->_config = Hi_Store::get('config');
$this->_action = $action;
}
