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搜索和替换文件或目录的一个好类--很实用

时间:2021-07-01 10:21:17 帮助过:10人阅读

这是个非常有用的程序,可以对文本文件进行特定的搜索,并以特定的文字替换指定的文字,举个例子说如果我这篇文章里有一个字全部打错了,有几十处,要一一找出来修改是件很麻烦的事,用下面这个就可以轻松搞定。--teaman.oso.com.cn
类文件 search_replace.inc


    class search_replace{

        var $find;
        var $replace;
        var $files;
        var $directories;
        var $include_subdir;
        var $ignore_lines;
        var $ignore_sep;
        var $occurences;
        var $search_function;
        var $last_error;

    //以下进行函数定义和设置
    
        function search_replace($find, $replace, $files, $directories = '', $include_subdir = 1, $ignore_lines = array()){

            $this->find      = $find;
            $this->replace     = $replace;
            $this->files      = $files;
            $this->directories   = $directories;
            $this->include_subdir = $include_subdir;
            $this->ignore_lines  = $ignore_lines;

            $this->occurences   = 0;
            $this->search_function = 'search';
            $this->last_error   = '';

        }

    /***************************************
    ** accessor for retrieving occurences.
    ***************************************/
        function get_num_occurences(){
            return $this->occurences;
        }

    //获取最后的错误
        function get_last_error(){
            return $this->last_error;
        }

    //设置FIND变量
        function set_find($find){
            $this->find = $find;
        }

    //设置replace变量
        function set_replace($replace){
            $this->replace = $replace;
        }

    //设置FILE变量
        function set_files($files){
            $this->files = $files;
        }

    //设置目录变量
        function set_directories($directories){
            $this->directories = $directories;
        }

    //设置目录变量 set_include_subdir
        function set_include_subdir($include_subdir){
            $this->include_subdir = $include_subdir;
        }

    //设置ignore_lines变量
        function set_ignore_lines($ignore_lines){
            $this->ignore_lines = $ignore_lines;
        }

    //确定是哪一种搜索方式
        function set_search_function($search_function){
            switch($search_function){
                case 'normal': $this->search_function = 'search';
                        return TRUE;
                        break;

                case 'quick' : $this->search_function = 'quick_search';
                        return TRUE;
                        break;

                case 'PReg' : $this->search_function = 'preg_search';
                        return TRUE;
                        break;

                case 'ereg' : $this->search_function = 'ereg_search';
                        return TRUE;
                        break;

                default   : $this->last_error   = 'Invalid search function specified';
                        return FALSE;
                        break;
            }
        }


    //以下为搜索和替换程序的主文件
        function search($filename){

            $occurences = 0;
            $file_array = file($filename);

            for($i=0; $i                 $continue_flag = 0;
                if(count($this->ignore_lines) > 0){
                    for($j=0; $jignore_lines); $j++){
                        if(substr($file_array[$i],0,strlen($this->ignore_lines[$j])) == $this->ignore_lines[$j]) $continue_flag = 1;
                    }
                }
                if($continue_flag == 1) continue;
                $occurences += count(explode($this->find, $file_array[$i])) - 1;
                $file_array[$i] = str_replace($this->find, $this->replace, $file_array[$i]);
            }
            if($occurences > 0) $return = array($occurences, implode('', $file_array)); else $return = FALSE;
            return $return;

        }

    //使用quick(快速)搜索方法时,没有igonre_lines功能
        function quick_search($filename){

            clearstatcache();

            $file    = fread($fp = fopen($filename, 'r'), filesize($filename)); fclose($fp);
            $occurences = count(explode($this->find, $file)) - 1;
            $file    = str_replace($this->find, $this->replace, $file);

            if($occurences > 0) $return = array($occurences, $file); else $return = FALSE;
            return $return;

        }

    //preg搜索方法不支持ignore_lines
        function preg_search($filename){

            clearstatcache();

            $file    = fread($fp = fopen($filename, 'r'), filesize($filename)); fclose($fp);
            $occurences = count($matches = preg_split($this->find, $file)) - 1;
            $file    = preg_replace($this->find, $this->replace, $file);

            if($occurences > 0) $return = array($occurences, $file); else $return = FALSE;
            return $return;

        }

    //ereg搜索方法也不支持ignore_lines
        function ereg_search($filename){

            clearstatcache();

            $file = fread($fp = fopen($filename, 'r'), filesize($filename)); fclose($fp);

            $occurences = count($matches = split($this->find, $file)) -1;
            $file    = ereg_replace($this->find, $this->replace, $file);

            if($occurences > 0) $return = array($occurences, $file); else $return = FALSE;
            return $return;

        }

    //写新文件
        function writeout($filename, $contents){

            if($fp = @fopen($filename, 'w')){
                fwrite($fp, $contents);
                fclose($fp);
            }else{
                $this->last_error = 'Could not open file: '.$filename;
            }

        }

    //由do_search调用,排出所有要搜索的文件
        function do_files($ser_func){
            if(!is_array($this->files)) $this->files = explode(',', $this->files);
            for($i=0; $ifiles); $i++){
                if($this->files[$i] == '.' OR $this->files[$i] == '..') continue;
                if(is_dir($this->files[$i]) == TRUE) continue;
                $newfile = $this->$ser_func($this->files[$i]);
                if(is_array($newfile) == TRUE){
                    $this->writeout($this->files[$i], $newfile[1]);
                    $this->occurences += $newfile[0];
                }
            }
        }

    //由do_search()调用,排出所有要搜索的目录
        function do_directories($ser_func){
            if(!is_array($this->directories)) $this->directories = explode(',', $this->directories);
            for($i=0; $idirectories); $i++){
                $dh = opendir($this->directories[$i]);
                while($file = readdir($dh)){
                    if($file == '.' OR $file == '..') continue;

                    if(is_dir($this->directories[$i].$file) == TRUE){
                        if($this->include_subdir == 1){
                            $this->directories[] = $this->directories[$i].$file.'/';
                            continue;
                        }else{
                            continue;
                        }
                    }

                    $newfile = $this->$ser_func($this->directories[$i].$file);
                    if(is_array($newfile) == TRUE){
                        $this->writeout($this->directories[$i].$file, $newfile[1]);
                        $this->occurences += $newfile[0];
                    }
                }
            }
        }

    //调用这个do_search()就可以开始对文件或目录进行搜索
        function do_search(){
            if($this->find != ''){
                if((is_array($this->files) AND count($this->files) > 0) OR $this->files != '') $this->do_files($this->search_function);
                if($this->directories != '')                    $this->do_directories($this->search_function);
            }
        }

    } // End of class
?>

//下面是调用该类的例子说明,请存为example.php


    include('search_replace.inc'); //将文件包括进来

//建立新物件,设置搜索条件、最后返回搜索结果

    $sr = new search_replace('asp', 'php', array('test.txt')); //调用搜索与替换
    $sr->set_search_function('quick');  //设置搜索条件
    $sr->do_search();

    $sr->set_find('another');
    $sr->do_search();

//下面是定制的返回信息
    header('Content-Type: text/plain');
    echo '发现和替换以下几个地方: '.$sr->get_num_occurences()."\r\n";
    echo '啊,错误发生如下.............: '.$sr->get_last_error()."\r\n";
?>

//将以下文字存为test.txt,注意text.txt必须是可读可写的
"我非常喜欢asp,它简单易学,功能强,听说asp已经占了大半市场,asp真好。"

此时,如果您打开exampe.php 就会出现下面这些:
发现和替换以下几个地方:3
啊,错误发生如下..........:   
查看test.txt文件,果然出现asp的地方被php替换了。

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