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搜索和替换文件或目录的一个好类--很实用

时间:2004/11/7 3:24:00来源:本站整理作者:蓝点我要评论(0)

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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