基本满足所有配置相关的需求。
*/
function __construct($conf, $map) {
$config = $this->parseini ( ( object ) parse_ini_string ( $conf, true ) );
if (array_key_exists ( 'production', $map )) {
$production = $map ['production'];
unset ( $map ['production'] );
$map = array_merge ( array ( 'production' => $production ), $map );
} else {
throw new errorexception ( 'production section not found in config' );
}
$section = 'production';
$hostname = gethostname ();
foreach ( $map as $k => $v ) {
if (is_array ( $v )) {
foreach ( $v as $v1 ) {
if ($v1 == $hostname) { $section = $k; break 2;
}
}
} elseif (is_callable ( $v )) {
if (true == call_user_func ( $v )) {
$section = $k; break;
}
} else {
throw new errorexception ( 'wrong map value in ' . __class__ );
}
}
$this->config = $config->$section;
}
/** * 总是返回配置对象
* * @return mixed
*/
function __get($key) {
if (isset ( $this->config->$key )) {
return $this->config->$key;
}
}
/** * 切分
* * @param stdclass $v
* @param string $k1
* @param mixed $v1
*/
private function split($v, $k1, $v1) {
$keys = explode ( '.', $k1 );
$last = array_pop ( $keys );
$node = $v;
foreach ( $keys as $v2 ) {
if (! isset ( $node->$v2 )) {
$node->$v2 = new stdclass ();
}
$node = $node->$v2;
}
$node->$last = $v1;
if (count ( $keys ) > 0) {
unset ( $v->$k1 );
}
}
/** * parseini
* * @param object $conf
* @return stdclass
*/
private function parseini($conf) {
$confobj = new stdclass ();
foreach ( $conf as $k => $v ) { // 是section
if (is_array ( $v )) {
$confobj->$k = ( object ) $v;
foreach ( $v as $k1 => $v1 ) {
call_user_func ( array ( $this, 'split' ), $confobj->$k, $k1, $v1 );
}
} else {
call_user_func ( array ( $this, 'split' ), $confobj, $k, $v );
}
}
unset ( $conf ); // 处理继承
foreach ( $confobj as $k => $v ) {
if (false !== strpos ( $k, ':' )) {
if (0 === strpos ( $k, ':' )) {
throw new errorexception ( 'config ' . $k . ' is invalid, ':' can't be the first char' );
} elseif (1 < substr_count ( $k, ':' )) {
throw new errorexception ( 'config ' . $k . ' is invalid, ':' can appear only once' );
} else { $keys = explode ( ':', $k );
if (! isset ( $confobj->$keys [1] )) {
throw new errorexception ( 'parent section ' . $keys [1] . ' doesn't exist in config file' );
} else { if (isset ( $confobj->$keys [0] )) {
throw new errorexception ( 'config is invalid, ' . $keys [0] . ' and ' . $k . ' conflicts' );
} else {
$confobj->$keys [0] = $this->deepcloner ( $confobj->$keys [1] );
$this->objectmerger ( $confobj->$keys [0], $v );
unset ( $confobj->$k );
}
}
}
}
}
return $confobj; }
/** * php默认是浅克隆，函数实现深克隆
* * @param object $obj
* @return object $obj
*/
private function deepcloner($obj) {
$objclone = clone $obj; foreach ( $objclone as $k => $v ) {
if (is_object ( $v )) {
$objclone->$k = $this->deepcloner ( $v );
} }
return $objclone;
}
/** * 递归的合并两个对象
* * @param unknown $obj1
* @param unknown $obj2
*/
private function objectmerger($obj1, $obj2) {
foreach ( $obj2 as $k => $v ) {
if (is_object ( $v ) && isset ( $obj1->$k ) && is_object ( $obj1->$k )) {
$this->objectmerger ( $obj1->$k, $v ); } else {
$obj1->$k = $v;
}
}
}
}
简单使用：
配置文件示例：
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