You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

200 lines
6.6 KiB
PHTML

5 years ago
<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2009 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------
namespace Org\Util;
class CodeSwitch {
// 错误信息
static private $error = array();
// 提示信息
static private $info = array();
// 记录错误
static private function error($msg) {
self::$error[] = $msg;
}
// 记录信息
static private function info($info) {
self::$info[] = $info;
}
/**
* 编码转换函数,对整个文件进行编码转换
* 支持以下转换
* GB2312、UTF-8 WITH BOM转换为UTF-8
* UTF-8、UTF-8 WITH BOM转换为GB2312
* @access public
* @param string $filename 文件名
* @param string $out_charset 转换后的文件编码,与iconv使用的参数一致
* @return void
*/
static function DetectAndSwitch($filename,$out_charset) {
$fpr = fopen($filename,"r");
$char1 = fread($fpr,1);
$char2 = fread($fpr,1);
$char3 = fread($fpr,1);
$originEncoding = "";
if($char1==chr(239) && $char2==chr(187) && $char3==chr(191))//UTF-8 WITH BOM
$originEncoding = "UTF-8 WITH BOM";
elseif($char1==chr(255) && $char2==chr(254))//UNICODE LE
{
self::error("不支持从UNICODE LE转换到UTF-8或GB编码");
fclose($fpr);
return;
}elseif($char1==chr(254) && $char2==chr(255)){//UNICODE BE
self::error("不支持从UNICODE BE转换到UTF-8或GB编码");
fclose($fpr);
return;
}else{//没有文件头,可能是GB或UTF-8
if(rewind($fpr)===false){//回到文件开始部分,准备逐字节读取判断编码
self::error($filename."文件指针后移失败");
fclose($fpr);
return;
}
while(!feof($fpr)){
$char = fread($fpr,1);
//对于英文,GB和UTF-8都是单字节的ASCII码小于128的值
if(ord($char)<128)
continue;
//对于汉字GB编码第一个字节是110*****第二个字节是10******(有特例,比如联字)
//UTF-8编码第一个字节是1110****第二个字节是10******第三个字节是10******
//按位与出来结果要跟上面非星号相同,所以应该先判断UTF-8
//因为使用GB的掩码按位与,UTF-8的111得出来的也是110,所以要先判断UTF-8
if((ord($char)&224)==224) {
//第一个字节判断通过
$char = fread($fpr,1);
if((ord($char)&128)==128) {
//第二个字节判断通过
$char = fread($fpr,1);
if((ord($char)&128)==128) {
$originEncoding = "UTF-8";
break;
}
}
}
if((ord($char)&192)==192) {
//第一个字节判断通过
$char = fread($fpr,1);
if((ord($char)&128)==128) {
//第二个字节判断通过
$originEncoding = "GB2312";
break;
}
}
}
}
if(strtoupper($out_charset)==$originEncoding) {
self::info("文件".$filename."转码检查完成,原始文件编码".$originEncoding);
fclose($fpr);
}else {
//文件需要转码
$originContent = "";
if($originEncoding == "UTF-8 WITH BOM") {
//跳过三个字节,把后面的内容复制一遍得到utf-8的内容
fseek($fpr,3);
$originContent = fread($fpr,filesize($filename)-3);
fclose($fpr);
}elseif(rewind($fpr)!=false){//不管是UTF-8还是GB2312,回到文件开始部分,读取内容
$originContent = fread($fpr,filesize($filename));
fclose($fpr);
}else{
self::error("文件编码不正确或指针后移失败");
fclose($fpr);
return;
}
//转码并保存文件
$content = iconv(str_replace(" WITH BOM","",$originEncoding),strtoupper($out_charset),$originContent);
$fpw = fopen($filename,"w");
fwrite($fpw,$content);
fclose($fpw);
if($originEncoding!="")
self::info("对文件".$filename."转码完成,原始文件编码".$originEncoding.",转换后文件编码".strtoupper($out_charset));
elseif($originEncoding=="")
self::info("文件".$filename."中没有出现中文,但是可以断定不是带BOM的UTF-8编码,没有进行编码转换,不影响使用");
}
}
/**
* 目录遍历函数
* @access public
* @param string $path 要遍历的目录名
* @param string $mode 遍历模式,一般取FILES,这样只返回带路径的文件名
* @param array $file_types 文件后缀过滤数组
* @param int $maxdepth 遍历深度,-1表示遍历到最底层
* @return void
*/
static function searchdir($path,$mode = "FULL",$file_types = array(".html",".php"),$maxdepth = -1,$d = 0) {
if(substr($path,strlen($path)-1) != '/')
$path .= '/';
$dirlist = array();
if($mode != "FILES")
$dirlist[] = $path;
if($handle = @opendir($path)) {
while(false !== ($file = readdir($handle)))
{
if($file != '.' && $file != '..')
{
$file = $path.$file ;
if(!is_dir($file))
{
if($mode != "DIRS")
{
$extension = "";
$extpos = strrpos($file, '.');
if($extpos!==false)
$extension = substr($file,$extpos,strlen($file)-$extpos);
$extension=strtolower($extension);
if(in_array($extension, $file_types))
$dirlist[] = $file;
}
}
elseif($d >= 0 && ($d < $maxdepth || $maxdepth < 0))
{
$result = self::searchdir($file.'/',$mode,$file_types,$maxdepth,$d + 1) ;
$dirlist = array_merge($dirlist,$result);
}
}
}
closedir ( $handle ) ;
}
if($d == 0)
natcasesort($dirlist);
return($dirlist) ;
}
/**
* 对整个项目目录中的PHP和HTML文件行进编码转换
* @access public
* @param string $app 要遍历的项目路径
* @param string $mode 遍历模式,一般取FILES,这样只返回带路径的文件名
* @param array $file_types 文件后缀过滤数组
* @return void
*/
static function CodingSwitch($app = "./",$charset='UTF-8',$mode = "FILES",$file_types = array(".html",".php")) {
self::info("注意: 程序使用的文件编码检测算法可能对某些特殊字符不适用");
$filearr = self::searchdir($app,$mode,$file_types);
foreach($filearr as $file)
self::DetectAndSwitch($file,$charset);
}
static public function getError() {
return self::$error;
}
static public function getInfo() {
return self::$info;
}
}