H:/Workspace/php-axiom/www/php-axiom/libraries/axiom/axIniConfiguration.class.php

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<?php
class axIniConfiguration implements axConfiguration {

                const CACHE_FILE = "config.cache.php";
                
                protected $_file;
                
                protected $_section;
                
                protected $_cache_dir;

    protected $_tree;

    public function __construct ($file, $section, $cache_dir = false) {
                $this->_file      = $file;
                $this->_section   = $section;
                $this->_cache_dir = $cache_dir !== false ? realpath($cache_dir) : false;
    }

    public function __get ($key) {
        return $this->getIterator()->$key;
    }
    
    public function getIterator() {
                if (!isset($this->_tree)) {
                                if ($this->_cache_dir && is_readable($c = $this->_cache_dir . '/' . self::CACHE_FILE)) {
                                                require $c;
                                                $this->_tree = $tree;
                                }
                                else {
                                $this->_generateTree($this->_section);
                                $this->_cache();
                                }
                }
                
                return $this->_tree;
    }
                
    protected function _generateTree ($section) {
                if (!is_file($this->_file) || !is_readable($this->_file))
            throw new axMissingFileException($this->_file);

        if (!$ini = parse_ini_file($this->_file, true))
            throw new RuntimeException("Cannot parse $file");
        
        foreach (array_keys($ini) as $key) {
            if (($offset = strpos($key, ':')) !== false && isset($ini[trim(substr($key, $offset+1))]))
                $ini[$key] += $ini[trim(substr($key, $offset+1))];
            if (strpos(trim($key), $section) === 0)
                $section = $key;
        }
                
        if (!isset($ini[$section]))
            throw new RuntimeException("Unable to find section $section");
                
        $this->_tree = new axTreeItem;
        foreach ($ini[$section] as $key => $value) {
            $p = explode('.', $key);
            $c = $this->_tree;
            foreach ($p as $k)
                $c = $c->__get($k);
            $c->setValue($value);
        }
    }
    
                protected function _cache () {
                                if (!$this->_cache_dir)
                                                return false;
                                
                                $buffer = '<?php $tree=' . var_export($this->_tree, true) . '; ?>';
                                return (boolean)file_put_contents($this->_cache_dir . '/' . self::CACHE_FILE, $buffer);
                }
}