<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2012 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
// $Id: functions.php 2702 2012-02-02 12:35:01Z liu21st $

/**
  +------------------------------------------------------------------------------
 * Think 命令行模式公共函数库
  +------------------------------------------------------------------------------
 * @category   Think
 * @package  Common
 * @author   liu21st <liu21st@gmail.com>
 * @version  $Id: functions.php 2702 2012-02-02 12:35:01Z liu21st $
  +------------------------------------------------------------------------------
 */

// 错误输出
function halt($error) {
    exit($error);
}

// 自定义异常处理
function throw_exception($msg, $type='ThinkException', $code=0) {
    halt($msg);
}

// 浏览器友好的变量输出
function dump($var, $echo=true, $label=null, $strict=true) {
    $label = ($label === null) ? '' : rtrim($label) . ' ';
    if (!$strict) {
        if (ini_get('html_errors')) {
            $output = print_r($var, true);
            $output = "<pre>" . $label . htmlspecialchars($output, ENT_QUOTES) . "</pre>";
        } else {
            $output = $label . print_r($var, true);
        }
    } else {
        ob_start();
        var_dump($var);
        $output = ob_get_clean();
        if (!extension_loaded('xdebug')) {
            $output = preg_replace("/\]\=\>\n(\s+)/m", "] => ", $output);
            $output = '<pre>' . $label . htmlspecialchars($output, ENT_QUOTES) . '</pre>';
        }
    }
    if ($echo) {
        echo($output);
        return null;
    }else
        return $output;
}

 // 区间调试开始
function debug_start($label='') {
    $GLOBALS[$label]['_beginTime'] = microtime(TRUE);
    if (MEMORY_LIMIT_ON)
        $GLOBALS[$label]['_beginMem'] = memory_get_usage();
}

// 区间调试结束，显示指定标记到当前位置的调试
function debug_end($label='') {
    $GLOBALS[$label]['_endTime'] = microtime(TRUE);
    echo '<div style="text-align:center;width:100%">Process ' . $label . ': Times ' . number_format($GLOBALS[$label]['_endTime'] - $GLOBALS[$label]['_beginTime'], 6) . 's ';
    if (MEMORY_LIMIT_ON) {
        $GLOBALS[$label]['_endMem'] = memory_get_usage();
        echo ' Memories ' . number_format(($GLOBALS[$label]['_endMem'] - $GLOBALS[$label]['_beginMem']) / 1024) . ' k';
    }
    echo '</div>';
}

// 全局缓存设置和读取
function S($name, $value='', $expire='', $type='',$options=null) {
    static $_cache = array();
    alias_import('Cache');
    //取得缓存对象实例
    $cache = Cache::getInstance($type,$options);
    if ('' !== $value) {
        if (is_null($value)) {
            // 删除缓存
            $result = $cache->rm($name);
            if ($result)
                unset($_cache[$type . '_' . $name]);
            return $result;
        }else {
            // 缓存数据
            $cache->set($name, $value, $expire);
            $_cache[$type . '_' . $name] = $value;
        }
        return;
    }
    if (isset($_cache[$type . '_' . $name]))
        return $_cache[$type . '_' . $name];
    // 获取缓存数据
    $value = $cache->get($name);
    $_cache[$type . '_' . $name] = $value;
    return $value;
}

// 快速文件数据读取和保存 针对简单类型数据 字符串、数组
function F($name, $value='', $path=DATA_PATH) {
    static $_cache = array();
    $filename = $path . $name . '.php';
    if ('' !== $value) {
        if (is_null($value)) {
            // 删除缓存
            return unlink($filename);
        } else {
            // 缓存数据
            $dir = dirname($filename);
            // 目录不存在则创建
            if (!is_dir($dir))
                mkdir($dir);
            return file_put_contents($filename, strip_whitespace("<?php\nreturn " . var_export($value, true) . ";\n?>"));
        }
    }
    if (isset($_cache[$name]))
        return $_cache[$name];
    // 获取缓存数据
    if (is_file($filename)) {
        $value = include $filename;
        $_cache[$name] = $value;
    } else {
        $value = false;
    }
    return $value;
}

// 取得对象实例 支持调用类的静态方法
function get_instance_of($name, $method='', $args=array()) {
    static $_instance = array();
    $identify = empty($args) ? $name . $method : $name . $method . to_guid_string($args);
    if (!isset($_instance[$identify])) {
        if (class_exists($name)) {
            $o = new $name();
            if (method_exists($o, $method)) {
                if (!empty($args)) {
                    $_instance[$identify] = call_user_func_array(array(&$o, $method), $args);
                } else {
                    $_instance[$identify] = $o->$method();
                }
            }
            else
                $_instance[$identify] = $o;
        }
        else
            halt(L('_CLASS_NOT_EXIST_') . ':' . $name);
    }
    return $_instance[$identify];
}

// 根据PHP各种类型变量生成唯一标识号
function to_guid_string($mix) {
    if (is_object($mix) && function_exists('spl_object_hash')) {
        return spl_object_hash($mix);
    } elseif (is_resource($mix)) {
        $mix = get_resource_type($mix) . strval($mix);
    } else {
        $mix = serialize($mix);
    }
    return md5($mix);
}

// 加载扩展配置文件
function load_ext_file() {
    // 加载自定义外部文件
    if(C('LOAD_EXT_FILE')) {
        $files =  explode(',',C('LOAD_EXT_FILE'));
        foreach ($files as $file){
            $file   = COMMON_PATH.$file.'.php';
            if(is_file($file)) include $file;
        }
    }
    // 加载自定义的动态配置文件
    if(C('LOAD_EXT_CONFIG')) {
        $configs =  C('LOAD_EXT_CONFIG');
        if(is_string($configs)) $configs =  explode(',',$configs);
        foreach ($configs as $key=>$config){
            $file   = CONF_PATH.$config.'.php';
            if(is_file($file)) {
                is_numeric($key)?C(include $file):C($key,include $file);
            }
        }
    }
}