588 lines
19 KiB
PHP
588 lines
19 KiB
PHP
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<?php
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/**
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* File/Directory manipulation
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*
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* PHP versions 4 and 5
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*
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* LICENSE: This source file is subject to version 3.0 of the PHP license
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* that is available through the world-wide-web at the following URI:
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* http://www.php.net/license/3_0.txt. If you did not receive a copy of
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* the PHP License and are unable to obtain it through the web, please
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* send a note to license@php.net so we can mail you a copy immediately.
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*
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* @category pear
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* @package System
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* @author Tomas V.V.Cox <cox@idecnet.com>
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* @copyright 1997-2006 The PHP Group
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* @license http://www.php.net/license/3_0.txt PHP License 3.0
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* @version CVS: $Id: System.php,v 1.53.2.1 2006/06/16 13:55:16 pajoye Exp $
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* @link http://pear.php.net/package/PEAR
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* @since File available since Release 0.1
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*/
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/**
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* base class
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*/
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require_once 'PEAR.php';
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require_once 'Console/Getopt.php';
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$GLOBALS['_System_temp_files'] = array();
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/**
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* System offers cross plattform compatible system functions
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*
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* Static functions for different operations. Should work under
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* Unix and Windows. The names and usage has been taken from its respectively
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* GNU commands. The functions will return (bool) false on error and will
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* trigger the error with the PHP trigger_error() function (you can silence
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* the error by prefixing a '@' sign after the function call).
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*
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* Documentation on this class you can find in:
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* http://pear.php.net/manual/
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*
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* Example usage:
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* if (!@System::rm('-r file1 dir1')) {
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* print "could not delete file1 or dir1";
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* }
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*
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* In case you need to to pass file names with spaces,
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* pass the params as an array:
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*
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* System::rm(array('-r', $file1, $dir1));
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*
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* @category pear
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* @package System
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* @author Tomas V.V. Cox <cox@idecnet.com>
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* @copyright 1997-2006 The PHP Group
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* @license http://www.php.net/license/3_0.txt PHP License 3.0
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* @version Release: 1.4.11
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* @link http://pear.php.net/package/PEAR
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* @since Class available since Release 0.1
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*/
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class System
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{
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/**
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* returns the commandline arguments of a function
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*
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* @param string $argv the commandline
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* @param string $short_options the allowed option short-tags
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* @param string $long_options the allowed option long-tags
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* @return array the given options and there values
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* @access private
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*/
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function _parseArgs($argv, $short_options, $long_options = null)
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{
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if (!is_array($argv) && $argv !== null) {
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$argv = preg_split('/\s+/', $argv, -1, PREG_SPLIT_NO_EMPTY);
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}
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return Console_Getopt::getopt2($argv, $short_options);
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}
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/**
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* Output errors with PHP trigger_error(). You can silence the errors
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* with prefixing a "@" sign to the function call: @System::mkdir(..);
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*
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* @param mixed $error a PEAR error or a string with the error message
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* @return bool false
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* @access private
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*/
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function raiseError($error)
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{
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if (PEAR::isError($error)) {
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$error = $error->getMessage();
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}
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trigger_error($error, E_USER_WARNING);
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return false;
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}
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/**
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* Creates a nested array representing the structure of a directory
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*
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* System::_dirToStruct('dir1', 0) =>
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* Array
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* (
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* [dirs] => Array
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* (
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* [0] => dir1
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* )
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*
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* [files] => Array
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* (
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* [0] => dir1/file2
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* [1] => dir1/file3
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* )
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* )
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* @param string $sPath Name of the directory
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* @param integer $maxinst max. deep of the lookup
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* @param integer $aktinst starting deep of the lookup
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* @return array the structure of the dir
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* @access private
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*/
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function _dirToStruct($sPath, $maxinst, $aktinst = 0)
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{
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$struct = array('dirs' => array(), 'files' => array());
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if (($dir = @opendir($sPath)) === false) {
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System::raiseError("Could not open dir $sPath");
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return $struct; // XXX could not open error
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}
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$struct['dirs'][] = $sPath = realpath($sPath); // XXX don't add if '.' or '..' ?
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$list = array();
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while (false !== ($file = readdir($dir))) {
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if ($file != '.' && $file != '..') {
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$list[] = $file;
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}
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}
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closedir($dir);
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sort($list);
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if ($aktinst < $maxinst || $maxinst == 0) {
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foreach($list as $val) {
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$path = $sPath . DIRECTORY_SEPARATOR . $val;
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if (is_dir($path) && !is_link($path)) {
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$tmp = System::_dirToStruct($path, $maxinst, $aktinst+1);
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$struct = array_merge_recursive($tmp, $struct);
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} else {
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$struct['files'][] = $path;
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}
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}
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}
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return $struct;
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}
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/**
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* Creates a nested array representing the structure of a directory and files
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*
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* @param array $files Array listing files and dirs
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* @return array
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* @see System::_dirToStruct()
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*/
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function _multipleToStruct($files)
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{
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$struct = array('dirs' => array(), 'files' => array());
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settype($files, 'array');
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foreach ($files as $file) {
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if (is_dir($file) && !is_link($file)) {
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$tmp = System::_dirToStruct($file, 0);
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$struct = array_merge_recursive($tmp, $struct);
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} else {
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$struct['files'][] = $file;
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}
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}
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return $struct;
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}
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/**
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* The rm command for removing files.
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* Supports multiple files and dirs and also recursive deletes
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*
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* @param string $args the arguments for rm
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* @return mixed PEAR_Error or true for success
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* @access public
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*/
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function rm($args)
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{
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$opts = System::_parseArgs($args, 'rf'); // "f" do nothing but like it :-)
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if (PEAR::isError($opts)) {
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return System::raiseError($opts);
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}
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foreach($opts[0] as $opt) {
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if ($opt[0] == 'r') {
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$do_recursive = true;
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}
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}
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$ret = true;
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if (isset($do_recursive)) {
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$struct = System::_multipleToStruct($opts[1]);
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foreach($struct['files'] as $file) {
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if (!@unlink($file)) {
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$ret = false;
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}
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}
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foreach($struct['dirs'] as $dir) {
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if (!@rmdir($dir)) {
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$ret = false;
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}
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}
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} else {
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foreach ($opts[1] as $file) {
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$delete = (is_dir($file)) ? 'rmdir' : 'unlink';
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if (!@$delete($file)) {
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$ret = false;
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}
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}
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}
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return $ret;
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}
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/**
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* Make directories.
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*
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* The -p option will create parent directories
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* @param string $args the name of the director(y|ies) to create
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* @return bool True for success
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* @access public
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*/
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function mkDir($args)
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{
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$opts = System::_parseArgs($args, 'pm:');
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if (PEAR::isError($opts)) {
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return System::raiseError($opts);
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}
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$mode = 0777; // default mode
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foreach($opts[0] as $opt) {
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if ($opt[0] == 'p') {
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$create_parents = true;
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} elseif($opt[0] == 'm') {
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// if the mode is clearly an octal number (starts with 0)
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// convert it to decimal
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if (strlen($opt[1]) && $opt[1]{0} == '0') {
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$opt[1] = octdec($opt[1]);
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} else {
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// convert to int
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$opt[1] += 0;
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}
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$mode = $opt[1];
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}
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}
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$ret = true;
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if (isset($create_parents)) {
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foreach($opts[1] as $dir) {
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$dirstack = array();
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while (!@is_dir($dir) && $dir != DIRECTORY_SEPARATOR) {
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array_unshift($dirstack, $dir);
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$dir = dirname($dir);
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}
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while ($newdir = array_shift($dirstack)) {
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if (!is_writeable(dirname($newdir))) {
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$ret = false;
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break;
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}
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if (!mkdir($newdir, $mode)) {
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$ret = false;
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}
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}
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}
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} else {
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foreach($opts[1] as $dir) {
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if (!@is_dir($dir) && !mkdir($dir, $mode)) {
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$ret = false;
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}
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}
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}
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return $ret;
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}
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/**
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* Concatenate files
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*
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* Usage:
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* 1) $var = System::cat('sample.txt test.txt');
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* 2) System::cat('sample.txt test.txt > final.txt');
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* 3) System::cat('sample.txt test.txt >> final.txt');
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*
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* Note: as the class use fopen, urls should work also (test that)
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*
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* @param string $args the arguments
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* @return boolean true on success
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* @access public
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*/
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function &cat($args)
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{
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$ret = null;
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$files = array();
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if (!is_array($args)) {
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$args = preg_split('/\s+/', $args, -1, PREG_SPLIT_NO_EMPTY);
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}
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for($i=0; $i < count($args); $i++) {
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if ($args[$i] == '>') {
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$mode = 'wb';
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$outputfile = $args[$i+1];
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break;
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} elseif ($args[$i] == '>>') {
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$mode = 'ab+';
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$outputfile = $args[$i+1];
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break;
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} else {
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$files[] = $args[$i];
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}
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}
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if (isset($mode)) {
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if (!$outputfd = fopen($outputfile, $mode)) {
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$err = System::raiseError("Could not open $outputfile");
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return $err;
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}
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$ret = true;
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}
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foreach ($files as $file) {
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if (!$fd = fopen($file, 'r')) {
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System::raiseError("Could not open $file");
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continue;
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}
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while ($cont = fread($fd, 2048)) {
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if (isset($outputfd)) {
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fwrite($outputfd, $cont);
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} else {
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$ret .= $cont;
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}
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}
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fclose($fd);
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}
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if (@is_resource($outputfd)) {
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fclose($outputfd);
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}
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return $ret;
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}
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/**
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* Creates temporary files or directories. This function will remove
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* the created files when the scripts finish its execution.
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*
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* Usage:
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* 1) $tempfile = System::mktemp("prefix");
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* 2) $tempdir = System::mktemp("-d prefix");
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* 3) $tempfile = System::mktemp();
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* 4) $tempfile = System::mktemp("-t /var/tmp prefix");
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*
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* prefix -> The string that will be prepended to the temp name
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* (defaults to "tmp").
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* -d -> A temporary dir will be created instead of a file.
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* -t -> The target dir where the temporary (file|dir) will be created. If
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* this param is missing by default the env vars TMP on Windows or
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* TMPDIR in Unix will be used. If these vars are also missing
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* c:\windows\temp or /tmp will be used.
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*
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* @param string $args The arguments
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* @return mixed the full path of the created (file|dir) or false
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* @see System::tmpdir()
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* @access public
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*/
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function mktemp($args = null)
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{
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static $first_time = true;
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$opts = System::_parseArgs($args, 't:d');
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if (PEAR::isError($opts)) {
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return System::raiseError($opts);
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}
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foreach($opts[0] as $opt) {
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if($opt[0] == 'd') {
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$tmp_is_dir = true;
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} elseif($opt[0] == 't') {
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$tmpdir = $opt[1];
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}
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}
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$prefix = (isset($opts[1][0])) ? $opts[1][0] : 'tmp';
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if (!isset($tmpdir)) {
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$tmpdir = System::tmpdir();
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}
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if (!System::mkDir(array('-p', $tmpdir))) {
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return false;
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}
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$tmp = tempnam($tmpdir, $prefix);
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|
if (isset($tmp_is_dir)) {
|
||
|
|
unlink($tmp); // be careful possible race condition here
|
||
|
|
if (!mkdir($tmp, 0700)) {
|
||
|
|
return System::raiseError("Unable to create temporary directory $tmpdir");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$GLOBALS['_System_temp_files'][] = $tmp;
|
||
|
|
if ($first_time) {
|
||
|
|
PEAR::registerShutdownFunc(array('System', '_removeTmpFiles'));
|
||
|
|
$first_time = false;
|
||
|
|
}
|
||
|
|
return $tmp;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Remove temporary files created my mkTemp. This function is executed
|
||
|
|
* at script shutdown time
|
||
|
|
*
|
||
|
|
* @access private
|
||
|
|
*/
|
||
|
|
function _removeTmpFiles()
|
||
|
|
{
|
||
|
|
if (count($GLOBALS['_System_temp_files'])) {
|
||
|
|
$delete = $GLOBALS['_System_temp_files'];
|
||
|
|
array_unshift($delete, '-r');
|
||
|
|
System::rm($delete);
|
||
|
|
$GLOBALS['_System_temp_files'] = array();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the path of the temporal directory set in the system
|
||
|
|
* by looking in its environments variables.
|
||
|
|
* Note: php.ini-recommended removes the "E" from the variables_order setting,
|
||
|
|
* making unavaible the $_ENV array, that s why we do tests with _ENV
|
||
|
|
*
|
||
|
|
* @return string The temporal directory on the system
|
||
|
|
*/
|
||
|
|
function tmpdir()
|
||
|
|
{
|
||
|
|
if (OS_WINDOWS) {
|
||
|
|
if ($var = isset($_ENV['TEMP']) ? $_ENV['TEMP'] : getenv('TEMP')) {
|
||
|
|
return $var;
|
||
|
|
}
|
||
|
|
if ($var = isset($_ENV['TMP']) ? $_ENV['TMP'] : getenv('TMP')) {
|
||
|
|
return $var;
|
||
|
|
}
|
||
|
|
if ($var = isset($_ENV['windir']) ? $_ENV['windir'] : getenv('windir')) {
|
||
|
|
return $var;
|
||
|
|
}
|
||
|
|
return getenv('SystemRoot') . '\temp';
|
||
|
|
}
|
||
|
|
if ($var = isset($_ENV['TMPDIR']) ? $_ENV['TMPDIR'] : getenv('TMPDIR')) {
|
||
|
|
return $var;
|
||
|
|
}
|
||
|
|
return '/tmp';
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The "which" command (show the full path of a command)
|
||
|
|
*
|
||
|
|
* @param string $program The command to search for
|
||
|
|
* @param mixed $fallback Value to return if $program is not found
|
||
|
|
*
|
||
|
|
* @return mixed A string with the full path or false if not found
|
||
|
|
* @author Stig Bakken <ssb@php.net>
|
||
|
|
*/
|
||
|
|
function which($program, $fallback = false)
|
||
|
|
{
|
||
|
|
// enforce API
|
||
|
|
if (!is_string($program) || '' == $program) {
|
||
|
|
return $fallback;
|
||
|
|
}
|
||
|
|
|
||
|
|
// available since 4.3.0RC2
|
||
|
|
if (defined('PATH_SEPARATOR')) {
|
||
|
|
$path_delim = PATH_SEPARATOR;
|
||
|
|
} else {
|
||
|
|
$path_delim = OS_WINDOWS ? ';' : ':';
|
||
|
|
}
|
||
|
|
// full path given
|
||
|
|
if (basename($program) != $program) {
|
||
|
|
$path_elements[] = dirname($program);
|
||
|
|
$program = basename($program);
|
||
|
|
} else {
|
||
|
|
// Honor safe mode
|
||
|
|
if (!ini_get('safe_mode') || !$path = ini_get('safe_mode_exec_dir')) {
|
||
|
|
$path = getenv('PATH');
|
||
|
|
if (!$path) {
|
||
|
|
$path = getenv('Path'); // some OSes are just stupid enough to do this
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$path_elements = explode($path_delim, $path);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (OS_WINDOWS) {
|
||
|
|
$exe_suffixes = getenv('PATHEXT')
|
||
|
|
? explode($path_delim, getenv('PATHEXT'))
|
||
|
|
: array('.exe','.bat','.cmd','.com');
|
||
|
|
// allow passing a command.exe param
|
||
|
|
if (strpos($program, '.') !== false) {
|
||
|
|
array_unshift($exe_suffixes, '');
|
||
|
|
}
|
||
|
|
// is_executable() is not available on windows for PHP4
|
||
|
|
$pear_is_executable = (function_exists('is_executable')) ? 'is_executable' : 'is_file';
|
||
|
|
} else {
|
||
|
|
$exe_suffixes = array('');
|
||
|
|
$pear_is_executable = 'is_executable';
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach ($exe_suffixes as $suff) {
|
||
|
|
foreach ($path_elements as $dir) {
|
||
|
|
$file = $dir . DIRECTORY_SEPARATOR . $program . $suff;
|
||
|
|
if (@$pear_is_executable($file)) {
|
||
|
|
return $file;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $fallback;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* The "find" command
|
||
|
|
*
|
||
|
|
* Usage:
|
||
|
|
*
|
||
|
|
* System::find($dir);
|
||
|
|
* System::find("$dir -type d");
|
||
|
|
* System::find("$dir -type f");
|
||
|
|
* System::find("$dir -name *.php");
|
||
|
|
* System::find("$dir -name *.php -name *.htm*");
|
||
|
|
* System::find("$dir -maxdepth 1");
|
||
|
|
*
|
||
|
|
* Params implmented:
|
||
|
|
* $dir -> Start the search at this directory
|
||
|
|
* -type d -> return only directories
|
||
|
|
* -type f -> return only files
|
||
|
|
* -maxdepth <n> -> max depth of recursion
|
||
|
|
* -name <pattern> -> search pattern (bash style). Multiple -name param allowed
|
||
|
|
*
|
||
|
|
* @param mixed Either array or string with the command line
|
||
|
|
* @return array Array of found files
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
function find($args)
|
||
|
|
{
|
||
|
|
if (!is_array($args)) {
|
||
|
|
$args = preg_split('/\s+/', $args, -1, PREG_SPLIT_NO_EMPTY);
|
||
|
|
}
|
||
|
|
$dir = array_shift($args);
|
||
|
|
$patterns = array();
|
||
|
|
$depth = 0;
|
||
|
|
$do_files = $do_dirs = true;
|
||
|
|
for ($i = 0; $i < count($args); $i++) {
|
||
|
|
switch ($args[$i]) {
|
||
|
|
case '-type':
|
||
|
|
if (in_array($args[$i+1], array('d', 'f'))) {
|
||
|
|
if ($args[$i+1] == 'd') {
|
||
|
|
$do_files = false;
|
||
|
|
} else {
|
||
|
|
$do_dirs = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$i++;
|
||
|
|
break;
|
||
|
|
case '-name':
|
||
|
|
if (OS_WINDOWS) {
|
||
|
|
if ($args[$i+1]{0} == '\\') {
|
||
|
|
// prepend drive
|
||
|
|
$args[$i+1] = addslashes(substr(getcwd(), 0, 2) . $args[$i + 1]);
|
||
|
|
}
|
||
|
|
// escape path separators to avoid PCRE problems
|
||
|
|
$args[$i+1] = str_replace('\\', '\\\\', $args[$i+1]);
|
||
|
|
}
|
||
|
|
$patterns[] = "(" . preg_replace(array('/\./', '/\*/'),
|
||
|
|
array('\.', '.*', ),
|
||
|
|
$args[$i+1])
|
||
|
|
. ")";
|
||
|
|
$i++;
|
||
|
|
break;
|
||
|
|
case '-maxdepth':
|
||
|
|
$depth = $args[$i+1];
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$path = System::_dirToStruct($dir, $depth);
|
||
|
|
if ($do_files && $do_dirs) {
|
||
|
|
$files = array_merge($path['files'], $path['dirs']);
|
||
|
|
} elseif ($do_dirs) {
|
||
|
|
$files = $path['dirs'];
|
||
|
|
} else {
|
||
|
|
$files = $path['files'];
|
||
|
|
}
|
||
|
|
if (count($patterns)) {
|
||
|
|
$patterns = implode('|', $patterns);
|
||
|
|
$ret = array();
|
||
|
|
for ($i = 0; $i < count($files); $i++) {
|
||
|
|
if (preg_match("#^$patterns\$#", $files[$i])) {
|
||
|
|
$ret[] = $files[$i];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return $ret;
|
||
|
|
}
|
||
|
|
return $files;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
?>
|