object_.diff
b/ryzom_api/tool_registry.php | ||
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<?php |
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/* Copyright (C) 2009 Winch Gate Property Limited |
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* |
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* This file is part of ryzom_api. |
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* ryzom_api is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published by |
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* the Free Software Foundation, either version 3 of the License, or |
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* (at your option) any later version. |
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* |
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* ryzom_api is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public License |
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* along with ryzom_api. If not, see <http://www.gnu.org/licenses/>. |
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*/ |
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class registry |
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implements ArrayAccess |
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{ |
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protected $_tree = array(0 => null) ; |
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protected $_current ; |
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static |
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public function load($array) |
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{ |
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$registry = new self ; |
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$registry->_tree = $array ; |
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$registry->cd('/') ; |
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return $registry ; |
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} |
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public function __construct() |
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{ |
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$ref = & $this->_tree ; |
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$this->_current = (object) array('ref' => &$ref) ; |
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} |
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public function cd($path) |
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{ |
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$current = & $this->_seek_node($path) ; |
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unset($this->_current->ref) ; |
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$this->_current->ref = & $current ; |
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return $this ; |
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} |
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public function offsetExists($path) |
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{ |
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try |
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{ |
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$node = & $this->_seek_node($path) ; |
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return is_array($node) ; |
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} |
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catch(exception $e) |
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{ |
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return false ; |
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} |
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} |
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public function offsetGet($path) |
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{ |
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$node = & $this->_seek_node($path) ; |
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return isset($node[0]) ? $node[0] : null ; |
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} |
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public function offsetUnset($path) |
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{ |
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$node = & $this->_seek_node($path) ; |
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$node = null ; |
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} |
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public function offsetSet($path, $value) |
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{ |
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$keys = $this->_explode_path($path) ; |
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// If it is absolute path |
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if(strpos($path, '/') === 0) |
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{ |
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$node = & $this->_tree ; |
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array_shift($keys) ; |
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} |
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else |
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$node = & $this->_current->ref ; |
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// go in tree as deeper as we can |
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while(is_string($key = array_shift($keys))) |
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{ |
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if(!empty($key) && isset($node[$key]) && is_array($node[$key])) |
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{ |
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// reference swaping |
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unset($n) ; $n = & $node[$key] ; |
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unset($node) ; $node = & $n ; |
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} |
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else |
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break ; |
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} |
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// create branch if it doesn't exist |
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do |
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{ |
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if(!empty($key)) |
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{ |
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$node[$key] = array(0 => null) ; |
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// reference swaping |
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unset($n) ; $n = & $node[$key] ; |
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unset($node) ; $node = & $n ; |
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} |
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} |
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while(is_string($key = array_shift($keys))) ; |
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$node[0] = $value ; |
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} |
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public function childs($path = '') |
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{ |
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$node = & $this->_seek_node($path) ; |
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return array_filter(array_keys($node), 'is_string') ; |
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} |
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protected function & _seek_node($path) |
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{ |
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$keys = $this->_explode_path($path) ; |
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if(strpos($path, '/') === 0) |
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{ |
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$node = & $this->_tree ; |
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array_shift($keys) ; |
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} |
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else |
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$node = & $this->_current->ref ; |
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while(is_string($key = array_shift($keys))) |
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{ |
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if(!empty($key)) |
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if(isset($node[$key]) && is_array($node[$key])) |
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{ |
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// reference swaping |
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unset($n) ; $n = & $node[$key] ; |
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unset($node) ; $node = & $n ; |
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} |
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else |
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throw new exception(sprintf('Couldn\'t path to (%s).', $path)) ; |
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} |
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return $node ; |
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} |
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protected function _explode_path($path) |
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{ |
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$keys = explode('/', $path) ; |
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if(count($keys) < 1) |
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throw new exception(sprintf('Invalid path "%s".', $path)) ; |
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return $keys ; |
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} |
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} |
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