<?php
// +----------------------------------------------------------------------
// | OneThink [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2013 http://www.onethink.cn All rights reserved.
// +----------------------------------------------------------------------
// | Author: 赛脑 <2233759493@qq.com> <http://www.sn.com>
// +----------------------------------------------------------------------

/**
 * 前台公共库文件
 * 主要定义前台公共函数库
 */

/**
 * 检测验证码
 * @param  integer $id 验证码ID
 * @return boolean     检测结果
 * @author 赛脑 <2233759493@qq.com>
 */
function check_verify($code, $id = 1){
	$verify = new \COM\Verify();
	return $verify->check($code, $id);
}

/**
 * 获取列表总行数
 * @param  string  $category 分类ID
 * @param  integer $status   数据状态
 * @author 赛脑 <2233759493@qq.com>
 */
function get_list_count($category, $status = 1){
    static $count;
    if(!isset($count[$category])){
        $count[$category] = D('Document')->listCount($category, $status);
    }
    return $count[$category];
}

/**
 * 获取段落总数
 * @param  string $id 文档ID
 * @return integer    段落总数
 * @author 赛脑 <2233759493@qq.com>
 */
function get_part_count($id){
    static $count;
    if(!isset($count[$id])){
        $count[$id] = D('Document')->partCount($id);
    }
    return $count[$id];
}

/**
 * 获取导航URL
 * @param  string $url 导航URL
 * @return string      解析或的url
 * @author 赛脑 <2233759493@qq.com>
 */
function get_nav_url($url){
    switch ($url) {
        case 'http://' === substr($url, 0, 7):
            break;
        case '#' === substr($url, 0, 1):
            break;        
        default:
            $url = U($url);
            break;
    }
    return $url;
}


//图片裁剪
function imagecropper($source_path,$filename = '', $target_width, $target_height){

	$source_info   = getimagesize($source_path);
	$source_width  = $source_info[0];
	$source_height = $source_info[1];
	$source_mime   = $source_info['mime'];
	$source_ratio  = $source_height / $source_width;
	$target_ratio  = $target_height / $target_width;

	// 源图过高
	if ($source_ratio > $target_ratio)
	{
		$cropped_width  = $source_width;
		$cropped_height = $source_width * $target_ratio;
		$source_x = 0;
		$source_y = ($source_height - $cropped_height) / 2;
	}
	// 源图过宽
	elseif ($source_ratio < $target_ratio)
	{
		$cropped_width  = $source_height / $target_ratio;
		$cropped_height = $source_height;
		$source_x = ($source_width - $cropped_width) / 2;
		$source_y = 0;
	}
	// 源图适中
	else
	{
		$cropped_width  = $source_width;
		$cropped_height = $source_height;
		$source_x = 0;
		$source_y = 0;
	}

	switch ($source_mime)
	{
		case 'image/gif':
			$source_image = imagecreatefromgif($source_path);
			$imagefun = 'imagejpeg';
			break;

		case 'image/jpeg':
			$source_image = imagecreatefromjpeg($source_path);
			$imagefun = 'imagejpeg';
			break;

		case 'image/png':
			$source_image = imagecreatefrompng($source_path);
			$imagefun = 'imagejpeg';
			break;

		default:
			return false;
			break;
	}

	$target_image  = imagecreatetruecolor($target_width, $target_height);
	$cropped_image = imagecreatetruecolor($cropped_width, $cropped_height);

	// 裁剪
	imagecopy($cropped_image, $source_image, 0, 0, $source_x, $source_y, $cropped_width, $cropped_height); 
	// 缩放
	imagecopyresampled($target_image, $cropped_image, 0, 0, 0, 0, $target_width, $target_height, $cropped_width, $cropped_height);
	$imagefun($target_image,$filename,100); 	//图片保存
	imagedestroy($source_image);
	imagedestroy($target_image);
	imagedestroy($cropped_image);
}

/**
 * 图片裁剪缩略图函数
 * @param  $imgurl 图片路径
 * @param  $width  缩略图宽度
 * @param  $height 缩略图高度
 * @param  $smallpic 无图片是默认图片路径
 */
function thumb($imgurl,$width=100,$height=100) {
	$getcwd = $_SERVER['CONTEXT_DOCUMENT_ROOT'];
	$url = $getcwd.$imgurl;
	$newimgurl = newimg($url,$width,$height);
	$newimg = newimg($imgurl,$width,$height);
	if(file_exists($newimgurl)) return $newimg;
	imagecropper($url,$newimgurl,$width,$height);
	return $newimg;
}

function newimg($img,$width,$height){
	$img_info = parse_url($img);
	/* 外部链接直接返回图片地址 */
	if (!empty($img_info['host']) && $img_info['host'] != $_SERVER['HTTP_HOST']) {
		return $img;
	} else {
		$pos = strrpos($img, '.');
		$img = substr($img, 0, $pos) . '_' . $width . '_' . $height . '.jpg';
		return $img;
	}
}

/*
 *获取IP地址城市
 *ip = ip地址
*/
function GetIpLookup($ip = ''){  
    if(empty($ip)){  
        $ip = $_SERVER["REMOTE_ADDR"];
    }  
    // $url="http://ip.taobao.com/service/getIpInfo.php?ip=".$ip;
    $url='';
    $ipinfo=json_decode(file_get_contents($url)); 
    if($ipinfo->code=='1'){
        return false;
    }
	$data = object_array($ipinfo->data);
	$data['province'] = $data['region'];
    return $data;  
}  

function object_array($array) {  
    if(is_object($array)) {  
        $array = (array)$array;  
     } if(is_array($array)) {  
         foreach($array as $key=>$value) {  
             $array[$key] = object_array($value);  
             }  
     }  
     return $array;  
}


/*
 *字符串截取
 *
*/
function cut_str($string, $sublen, $start = 0, $code = 'UTF-8'){
    if($code == 'UTF-8')    {
        $pa = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|\xe0[\xa0-\xbf][\x80-\xbf]|[\xe1-\xef][\x80-\xbf][\x80-\xbf]|\xf0[\x90-\xbf][\x80-\xbf][\x80-\xbf]|[\xf1-\xf7][\x80-\xbf][\x80-\xbf][\x80-\xbf]/";
        preg_match_all($pa, $string, $t_string);
        if(count($t_string[0]) - $start > $sublen) return join('', array_slice($t_string[0], $start, $sublen));
        return join('', array_slice($t_string[0], $start, $sublen));
    }else{
        $start = $start*2;
        $sublen = $sublen*2;
        $strlen = strlen($string);
        $tmpstr = '';
        for($i=0; $i< $strlen; $i++){
            if($i>=$start && $i< ($start+$sublen)){
                if(ord(substr($string, $i, 1))>129){
                    $tmpstr.= substr($string, $i, 2);
                }else{
                    $tmpstr.= substr($string, $i, 1);
                }
            }
            if(ord(substr($string, $i, 1))>129) $i++;
        }
        //if(strlen($tmpstr)< $strlen ) $tmpstr.= "...";
        return $tmpstr;
    }
}