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SearchReplace.php
< prev
Wrap
PHP Script
|
2000-10-08
|
14KB
|
390 lines
<?php
//
// Search and Replace Utility
//
//
// +----------------------------------------------------------------------+
// | Author: Richard Heyes <richard.heyes@heyes-computing.net |
// | Version: 1.00 |
// | Updated: 08/10/2000 |
// | |
// | See http://www.heyes-computing.net/scripts/ for full tar/zip |
// | including example file. |
// +----------------------------------------------------------------------+
class File_SearchReplace {
// {{{ Properties (All private)
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;
// }}}
/**
* Sets up the object
*
* @access public
* @param string $find The string/regex to find.
* @param string $replace The string/regex to replace $find with.
* @param array $files The file(s) to perform this operation on.
* @param array $directories (optional) The directories to perform this operation on.
* @param int $include_subdir If performing on directories, whether to traverse subdirectories.
* @param array $ignore_lines Ignore lines beginning with any of the strings in this array. This
* feature only works with the "normal" search.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function File_SearchReplace($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 to return the number of occurences found.
*
* @access public
* @return int Number of occurences found.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function getNumOccurences(){
return $this->occurences;
}
/**
* Accessor for retrieving last error.
*
* @access public
* @return string The last error that occurred, if any.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function getLastError(){
return $this->last_error;
}
/**
* Accessor for setting find variable.
*
* @access public
* @param string $find The string/regex to find.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function setFind($find){
$this->find = $find;
}
/**
* Accessor for setting replace variable.
*
* @access public
* @param string $replace The string/regex to replace the find string/regex with.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function setReplace($replace){
$this->replace = $replace;
}
/**
* Accessor for setting files variable.
*
* @access public
* @param array $files The file(s) to perform this operation on.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function setFiles($files){
$this->files = $files;
}
/**
* Accessor for setting directories variable.
*
* @access public
* @param array $directories The directories to perform this operation on.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function setDirectories($directories){
$this->directories = $directories;
}
/**
* Accessor for setting include_subdir variable.
*
* @access public
* @param int $include_subdir Whether to traverse subdirectories or not.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function setIncludeSubdir($include_subdir){
$this->include_subdir = $include_subdir;
}
/**
* Accessor for setting ignore_lines variable.
*
* @access public
* @param array $ignore_lines Ignore lines beginning with any of the strings in this array. This
* feature only works with the "normal" search.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function setIgnoreLines($ignore_lines){
$this->ignore_lines = $ignore_lines;
}
/**
* Function to determine which search function is used.
*
* @access public
* @param string The search function that should be used. Can be any one of:
* normal - Default search. Goes line by line. Ignore lines feature only works with this type.
* quick - Uses str_replace for straight replacement throughout file. Quickest of the lot.
* preg - Uses preg_replace(), so any regex valid with this function is valid here.
* ereg - Uses ereg_replace(), so any regex valid with this function is valid here.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function setSearchFunction($search_function){
switch($search_function){
case 'normal': $this->search_function = 'search';
return TRUE;
break;
case 'quick' : $this->search_function = 'quickSearch';
return TRUE;
break;
case 'preg' : $this->search_function = 'pregSearch';
return TRUE;
break;
case 'ereg' : $this->search_function = 'eregSearch';
return TRUE;
break;
default : $this->last_error = 'Invalid search function specified';
return FALSE;
break;
}
}
/**
* Default ("normal") search routine.
*
* @access private
* @param string $filename The filename to search and replace upon.
* @return array Will return an array containing the new file contents and the number of occurences.
* Will return FALSE if there are no occurences.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function search($filename){
$occurences = 0;
$file_array = file($filename);
for($i=0; $i<count($file_array); $i++){
if(count($this->ignore_lines) > 0){
for($j=0; $j<count($this->ignore_lines); $j++){
if(substr($file_array[$i],0,strlen($this->ignore_lines[$j])) == $this->ignore_lines[$j]) continue 2;
}
}
$occurences += count(explode($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;
}
/**
* Quick search routine.
*
* @access private
* @param string $filename The filename to search and replace upon.
* @return array Will return an array containing the new file contents and the number of occurences.
* Will return FALSE if there are no occurences.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function quickSearch($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 search routine.
*
* @access private
* @param string $filename The filename to search and replace upon.
* @return array Will return an array containing the new file contents and the number of occurences.
* Will return FALSE if there are no occurences.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function pregSearch($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 search routine.
*
* @access private
* @param string $filename The filename to search and replace upon.
* @return array Will return an array containing the new file contents and the number of occurences.
* Will return FALSE if there are no occurences.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function eregSearch($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;
}
/**
* Function to writeout the file contents.
*
* @access private
* @param string $filename The filename of the file to write.
* @param string $contents The contents to write to the file.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function writeout($filename, $contents){
if($fp = @fopen($filename, 'w')){
flock($fp,2);
fwrite($fp, $contents);
flock($fp,3);
fclose($fp);
}else{
$this->last_error = 'Could not open file: '.$filename;
}
}
/**
* Function called by doSearch() to go through any files that need searching.
*
* @access private
* @param string $ser_func The search function to use.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function doFiles($ser_func){
if(!is_array($this->files)) $this->files = explode(',', $this->files);
for($i=0; $i<count($this->files); $i++){
if($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];
}
}
}
/**
* Function called by doSearch() to go through any directories that need searching.
*
* @access private
* @param string $ser_func The search function to use.
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function doDirectories($ser_func){
if(!is_array($this->directories)) $this->directories = explode(',', $this->directories);
for($i=0; $i<count($this->directories); $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 += $newfile[0];
}
}
}
}
/**
* This starts the search/replace off. Call this to do the search.
* First do whatever files are specified, and/or if directories are specified,
* do those too.
*
* @access public
*
* @author Richard Heyes <richard.heyes@heyes-computing.net>
*/
function doSearch(){
if($this->find != ''){
if((is_array($this->files) AND count($this->files) > 0) OR $this->files != '') $this->doFiles($this->search_function);
if($this->directories != '') $this->doDirectories($this->search_function);
}
}
}
?>