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Edit File : System.php \| Size : 20.34 KB
<?php /** * File/Directory manipulation * * PHP versions 4 and 5 * * @category pear * @package System * @author Tomas V.V.Cox <cox@idecnet.com> * @copyright 1997-2009 The Authors * @license http://opensource.org/licenses/bsd-license.php New BSD License * @version CVS: $Id$ * @link http://pear.php.net/package/PEAR * @since File available since Release 0.1 / /* * base class / require_once 'PEAR.php'; require_once 'Console/Getopt.php'; $GLOBALS['_System_temp_files'] = array(); /* * System offers cross plattform compatible system functions * * Static functions for different operations. Should work under * Unix and Windows. The names and usage has been taken from its respectively * GNU commands. The functions will return (bool) false on error and will * trigger the error with the PHP trigger_error() function (you can silence * the error by prefixing a '@' sign after the function call, but this * is not recommended practice. Instead use an error handler with * {@link set_error_handler()}). * * Documentation on this class you can find in: * http://pear.php.net/manual/ * * Example usage: * if (!@System::rm('-r file1 dir1')) { * print "could not delete file1 or dir1"; * } * * In case you need to to pass file names with spaces, * pass the params as an array: * * System::rm(array('-r', $file1, $dir1)); * * @category pear * @package System * @author Tomas V.V. Cox <cox@idecnet.com> * @copyright 1997-2006 The PHP Group * @license http://opensource.org/licenses/bsd-license.php New BSD License * @version Release: 1.9.5 * @link http://pear.php.net/package/PEAR * @since Class available since Release 0.1 * @static / class System { /* * returns the commandline arguments of a function * * @param string $argv the commandline * @param string $short_options the allowed option short-tags * @param string $long_options the allowed option long-tags * @return array the given options and there values * @static * @access private / function _parseArgs($argv, $short_options, $long_options = null) { if (!is_array($argv) && $argv !== null) { / // Quote all items that are a short option $av = preg_split('/(\A\| )--?[a-z0-9]+[ =]?((?<!\\\\)((,\s)\|((?<!,)\s+))?)/i', $argv, -1, PREG_SPLIT_NO_EMPTY \| PREG_SPLIT_OFFSET_CAPTURE); $offset = 0; foreach ($av as $a) { $b = trim($a[0]); if ($b{0} == '"' \|\| $b{0} == "'") { continue; } $escape = escapeshellarg($b); $pos = $a[1] + $offset; $argv = substr_replace($argv, $escape, $pos, strlen($b)); $offset += 2; } / // Find all items, quoted or otherwise preg_match_all("/(?:[\"'])(.?)(?:['\"])\|([^\s]+)/", $argv, $av); $argv = $av[1]; foreach ($av[2] as $k => $a) { if (empty($a)) { continue; } $argv[$k] = trim($a) ; } } return Console_Getopt::getopt2($argv, $short_options, $long_options); } /* * Output errors with PHP trigger_error(). You can silence the errors * with prefixing a "@" sign to the function call: @System::mkdir(..); * * @param mixed $error a PEAR error or a string with the error message * @return bool false * @static * @access private / function raiseError($error) { if (PEAR::isError($error)) { $error = $error->getMessage(); } trigger_error($error, E_USER_WARNING); return false; } /* * Creates a nested array representing the structure of a directory * * System::_dirToStruct('dir1', 0) => * Array * ( * [dirs] => Array * ( * [0] => dir1 * ) * * [files] => Array * ( * [0] => dir1/file2 * [1] => dir1/file3 * ) * ) * @param string $sPath Name of the directory * @param integer $maxinst max. deep of the lookup * @param integer $aktinst starting deep of the lookup * @param bool $silent if true, do not emit errors. * @return array the structure of the dir * @static * @access private / function _dirToStruct($sPath, $maxinst, $aktinst = 0, $silent = false) { $struct = array('dirs' => array(), 'files' => array()); if (($dir = @opendir($sPath)) === false) { if (!$silent) { System::raiseError("Could not open dir $sPath"); } return $struct; // XXX could not open error } $struct['dirs'][] = $sPath = realpath($sPath); // XXX don't add if '.' or '..' ? $list = array(); while (false !== ($file = readdir($dir))) { if ($file != '.' && $file != '..') { $list[] = $file; } } closedir($dir); natsort($list); if ($aktinst < $maxinst \|\| $maxinst == 0) { foreach ($list as $val) { $path = $sPath . DIRECTORY_SEPARATOR . $val; if (is_dir($path) && !is_link($path)) { $tmp = System::_dirToStruct($path, $maxinst, $aktinst+1, $silent); $struct = array_merge_recursive($struct, $tmp); } else { $struct['files'][] = $path; } } } return $struct; } /* * Creates a nested array representing the structure of a directory and files * * @param array $files Array listing files and dirs * @return array * @static * @see System::_dirToStruct() / function _multipleToStruct($files) { $struct = array('dirs' => array(), 'files' => array()); settype($files, 'array'); foreach ($files as $file) { if (is_dir($file) && !is_link($file)) { $tmp = System::_dirToStruct($file, 0); $struct = array_merge_recursive($tmp, $struct); } else { if (!in_array($file, $struct['files'])) { $struct['files'][] = $file; } } } return $struct; } /* * The rm command for removing files. * Supports multiple files and dirs and also recursive deletes * * @param string $args the arguments for rm * @return mixed PEAR_Error or true for success * @static * @access public / function rm($args) { $opts = System::_parseArgs($args, 'rf'); // "f" does nothing but I like it :-) if (PEAR::isError($opts)) { return System::raiseError($opts); } foreach ($opts[0] as $opt) { if ($opt[0] == 'r') { $do_recursive = true; } } $ret = true; if (isset($do_recursive)) { $struct = System::_multipleToStruct($opts[1]); foreach ($struct['files'] as $file) { if (!@unlink($file)) { $ret = false; } } rsort($struct['dirs']); foreach ($struct['dirs'] as $dir) { if (!@rmdir($dir)) { $ret = false; } } } else { foreach ($opts[1] as $file) { $delete = (is_dir($file)) ? 'rmdir' : 'unlink'; if (!@$delete($file)) { $ret = false; } } } return $ret; } /* * Make directories. * * The -p option will create parent directories * @param string $args the name of the director(y\|ies) to create * @return bool True for success * @static * @access public / function mkDir($args) { $opts = System::_parseArgs($args, 'pm:'); if (PEAR::isError($opts)) { return System::raiseError($opts); } $mode = 0777; // default mode foreach ($opts[0] as $opt) { if ($opt[0] == 'p') { $create_parents = true; } elseif ($opt[0] == 'm') { // if the mode is clearly an octal number (starts with 0) // convert it to decimal if (strlen($opt[1]) && $opt[1]{0} == '0') { $opt[1] = octdec($opt[1]); } else { // convert to int $opt[1] += 0; } $mode = $opt[1]; } } $ret = true; if (isset($create_parents)) { foreach ($opts[1] as $dir) { $dirstack = array(); while ((!file_exists($dir) \|\| !is_dir($dir)) && $dir != DIRECTORY_SEPARATOR) { array_unshift($dirstack, $dir); $dir = dirname($dir); } while ($newdir = array_shift($dirstack)) { if (!is_writeable(dirname($newdir))) { $ret = false; break; } if (!mkdir($newdir, $mode)) { $ret = false; } } } } else { foreach($opts[1] as $dir) { if ((@file_exists($dir) \|\| !is_dir($dir)) && !mkdir($dir, $mode)) { $ret = false; } } } return $ret; } /* * Concatenate files * * Usage: * 1) $var = System::cat('sample.txt test.txt'); * 2) System::cat('sample.txt test.txt > final.txt'); * 3) System::cat('sample.txt test.txt >> final.txt'); * * Note: as the class use fopen, urls should work also (test that) * * @param string $args the arguments * @return boolean true on success * @static * @access public / function &cat($args) { $ret = null; $files = array(); if (!is_array($args)) { $args = preg_split('/\s+/', $args, -1, PREG_SPLIT_NO_EMPTY); } $count_args = count($args); for ($i = 0; $i < $count_args; $i++) { if ($args[$i] == '>') { $mode = 'wb'; $outputfile = $args[$i+1]; break; } elseif ($args[$i] == '>>') { $mode = 'ab+'; $outputfile = $args[$i+1]; break; } else { $files[] = $args[$i]; } } $outputfd = false; if (isset($mode)) { if (!$outputfd = fopen($outputfile, $mode)) { $err = System::raiseError("Could not open $outputfile"); return $err; } $ret = true; } foreach ($files as $file) { if (!$fd = fopen($file, 'r')) { System::raiseError("Could not open $file"); continue; } while ($cont = fread($fd, 2048)) { if (is_resource($outputfd)) { fwrite($outputfd, $cont); } else { $ret .= $cont; } } fclose($fd); } if (is_resource($outputfd)) { fclose($outputfd); } return $ret; } /* * Creates temporary files or directories. This function will remove * the created files when the scripts finish its execution. * * Usage: * 1) $tempfile = System::mktemp("prefix"); * 2) $tempdir = System::mktemp("-d prefix"); * 3) $tempfile = System::mktemp(); * 4) $tempfile = System::mktemp("-t /var/tmp prefix"); * * prefix -> The string that will be prepended to the temp name * (defaults to "tmp"). * -d -> A temporary dir will be created instead of a file. * -t -> The target dir where the temporary (file\|dir) will be created. If * this param is missing by default the env vars TMP on Windows or * TMPDIR in Unix will be used. If these vars are also missing * c:\windows\temp or /tmp will be used. * * @param string $args The arguments * @return mixed the full path of the created (file\|dir) or false * @see System::tmpdir() * @static * @access public / function mktemp($args = null) { static $first_time = true; $opts = System::_parseArgs($args, 't:d'); if (PEAR::isError($opts)) { return System::raiseError($opts); } foreach ($opts[0] as $opt) { if ($opt[0] == 'd') { $tmp_is_dir = true; } elseif ($opt[0] == 't') { $tmpdir = $opt[1]; } } $prefix = (isset($opts[1][0])) ? $opts[1][0] : 'tmp'; if (!isset($tmpdir)) { $tmpdir = System::tmpdir(); } if (!System::mkDir(array('-p', $tmpdir))) { return false; } $tmp = tempnam($tmpdir, $prefix); if (isset($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'][] = $tmp; if (isset($tmp_is_dir)) { //$GLOBALS['_System_temp_files'][] = dirname($tmp); } if ($first_time) { PEAR::registerShutdownFunc(array('System', '_removeTmpFiles')); $first_time = false; } return $tmp; } /* * Remove temporary files created my mkTemp. This function is executed * at script shutdown time * * @static * @access private / function _removeTmpFiles() { if (count($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 $_ENV array, that s why we do tests with _ENV * * @static * @return string The temporary directory on the system / function tmpdir() { if (OS_WINDOWS) { if ($var = isset($_ENV['TMP']) ? $_ENV['TMP'] : getenv('TMP')) { return $var; } if ($var = isset($_ENV['TEMP']) ? $_ENV['TEMP'] : getenv('TEMP')) { return $var; } if ($var = isset($_ENV['USERPROFILE']) ? $_ENV['USERPROFILE'] : getenv('USERPROFILE')) { 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 realpath('/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 $program is not found * * @return mixed A string with the full path or false if not found * @static * @author Stig Bakken <ssb@php.net> / function which($program, $fallback = false) { // enforce API if (!is_string($program) \|\| '' == $program) { return $fallback; } // full path given if (basename($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_SEPARATOR, $path); } if (OS_WINDOWS) { $exe_suffixes = getenv('PATHEXT') ? explode(PATH_SEPARATOR, getenv('PATHEXT')) : array('.exe','.bat','.cmd','.com'); // allow passing a command.exe param if (strpos($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: * $dir -> Start the search at this directory * -type d -> return only directories * -type f -> return only files * -maxdepth <n> -> max depth of recursion * -name <pattern> -> search pattern (bash style). Multiple -name param allowed * * @param mixed Either array or string with the command line * @return array Array of found files * @static * / function find($args) { if (!is_array($args)) { $args = preg_split('/\s+/', $args, -1, PREG_SPLIT_NO_EMPTY); } $dir = realpath(array_shift($args)); if (!$dir) { return array(); } $patterns = array(); $depth = 0; $do_files = $do_dirs = true; $args_count = count($args); for ($i = 0; $i < $args_count; $i++) { switch ($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': $name = preg_quote($args[$i+1], '#'); // our magic characters ? and have just been escaped, // so now we change the escaped versions to PCRE operators $name = strtr($name, array('\?' => '.', '\' => '.')); $patterns[] = '('.$name.')'; $i++; break; case '-maxdepth': $depth = $args[$i+1]; break; } } $path = System::_dirToStruct($dir, $depth, 0, true); if ($do_files && $do_dirs) { $files = array_merge($path['files'], $path['dirs']); } elseif ($do_dirs) { $files = $path['dirs']; } else { $files = $path['files']; } if (count($patterns)) { $dsq = preg_quote(DIRECTORY_SEPARATOR, '#'); $pattern = '#(^\|'.$dsq.')'.implode('\|', $patterns).'($\|'.$dsq.')#'; $ret = array(); $files_count = count($files); for ($i = 0; $i < $files_count; $i++) { // only search in the part of the file below the current directory $filepart = basename($files[$i]); if (preg_match($pattern, $filepart)) { $ret[] = $files[$i]; } } return $ret; } return $files; } } Back

Edit File : System.php | Size : 20.34 KB

<?php
/**
 * File/Directory manipulation
 *
 * PHP versions 4 and 5
 *
 * @category   pear
 * @package    System
 * @author     Tomas V.V.Cox <cox@idecnet.com>
 * @copyright  1997-2009 The Authors
 * @license    http://opensource.org/licenses/bsd-license.php New BSD License
 * @version    CVS: $Id$
 * @link       http://pear.php.net/package/PEAR
 * @since      File available since Release 0.1
 */

/**
 * base class
 */
require_once 'PEAR.php';
require_once 'Console/Getopt.php';

$GLOBALS['_System_temp_files'] = array();

/**
* System offers cross plattform compatible system functions
*
* Static functions for different operations. Should work under
* Unix and Windows. The names and usage has been taken from its respectively
* GNU commands. The functions will return (bool) false on error and will
* trigger the error with the PHP trigger_error() function (you can silence
* the error by prefixing a '@' sign after the function call, but this
* is not recommended practice.  Instead use an error handler with
* {@link set_error_handler()}).
*
* Documentation on this class you can find in:
* http://pear.php.net/manual/
*
* Example usage:
* if (!@System::rm('-r file1 dir1')) {
*    print "could not delete file1 or dir1";
* }
*
* In case you need to to pass file names with spaces,
* pass the params as an array:
*
* System::rm(array('-r', $file1, $dir1));
*
* @category   pear
* @package    System
* @author     Tomas V.V. Cox <cox@idecnet.com>
* @copyright  1997-2006 The PHP Group
* @license    http://opensource.org/licenses/bsd-license.php New BSD License
* @version    Release: 1.9.5
* @link       http://pear.php.net/package/PEAR
* @since      Class available since Release 0.1
* @static
*/
class System
{
    /**
     * returns the commandline arguments of a function
     *
     * @param    string  $argv           the commandline
     * @param    string  $short_options  the allowed option short-tags
     * @param    string  $long_options   the allowed option long-tags
     * @return   array   the given options and there values
     * @static
     * @access private
     */
    function _parseArgs($argv, $short_options, $long_options = null)
    {
        if (!is_array($argv) && $argv !== null) {
            /*
            // Quote all items that are a short option
            $av = preg_split('/(\A| )--?[a-z0-9]+[ =]?((?<!\\\\)((,\s*)|((?<!,)\s+))?)/i', $argv, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_OFFSET_CAPTURE);
            $offset = 0;
            foreach ($av as $a) {
                $b = trim($a[0]);
                if ($b{0} == '"' || $b{0} == "'") {
                    continue;
                }

$escape = escapeshellarg($b);
                $pos = $a[1] + $offset;
                $argv = substr_replace($argv, $escape, $pos, strlen($b));
                $offset += 2;
            }
            */

// Find all items, quoted or otherwise
            preg_match_all("/(?:[\"'])(.*?)(?:['\"])|([^\s]+)/", $argv, $av);
            $argv = $av[1];
            foreach ($av[2] as $k => $a) {
                if (empty($a)) {
                    continue;
                }
                $argv[$k] = trim($a) ;
            }
        }

return Console_Getopt::getopt2($argv, $short_options, $long_options);
    }

/**
     * Output errors with PHP trigger_error(). You can silence the errors
     * with prefixing a "@" sign to the function call: @System::mkdir(..);
     *
     * @param mixed $error a PEAR error or a string with the error message
     * @return bool false
     * @static
     * @access private
     */
    function raiseError($error)
    {
        if (PEAR::isError($error)) {
            $error = $error->getMessage();
        }
        trigger_error($error, E_USER_WARNING);
        return false;
    }

/**
     * Creates a nested array representing the structure of a directory
     *
     * System::_dirToStruct('dir1', 0) =>
     *   Array
     *    (
     *    [dirs] => Array
     *        (
     *            [0] => dir1
     *        )
     *
     *    [files] => Array
     *        (
     *            [0] => dir1/file2
     *            [1] => dir1/file3
     *        )
     *    )
     * @param    string  $sPath      Name of the directory
     * @param    integer $maxinst    max. deep of the lookup
     * @param    integer $aktinst    starting deep of the lookup
     * @param    bool    $silent     if true, do not emit errors.
     * @return   array   the structure of the dir
     * @static
     * @access   private
     */
    function _dirToStruct($sPath, $maxinst, $aktinst = 0, $silent = false)
    {
        $struct = array('dirs' => array(), 'files' => array());
        if (($dir = @opendir($sPath)) === false) {
            if (!$silent) {
                System::raiseError("Could not open dir $sPath");
            }
            return $struct; // XXX could not open error
        }

$struct['dirs'][] = $sPath = realpath($sPath); // XXX don't add if '.' or '..' ?
        $list = array();
        while (false !== ($file = readdir($dir))) {
            if ($file != '.' && $file != '..') {
                $list[] = $file;
            }
        }

closedir($dir);
        natsort($list);
        if ($aktinst < $maxinst || $maxinst == 0) {
            foreach ($list as $val) {
                $path = $sPath . DIRECTORY_SEPARATOR . $val;
                if (is_dir($path) && !is_link($path)) {
                    $tmp    = System::_dirToStruct($path, $maxinst, $aktinst+1, $silent);
                    $struct = array_merge_recursive($struct, $tmp);
                } else {
                    $struct['files'][] = $path;
                }
            }
        }

return $struct;
    }

/**
     * Creates a nested array representing the structure of a directory and files
     *
     * @param    array $files Array listing files and dirs
     * @return   array
     * @static
     * @see System::_dirToStruct()
     */
    function _multipleToStruct($files)
    {
        $struct = array('dirs' => array(), 'files' => array());
        settype($files, 'array');
        foreach ($files as $file) {
            if (is_dir($file) && !is_link($file)) {
                $tmp    = System::_dirToStruct($file, 0);
                $struct = array_merge_recursive($tmp, $struct);
            } else {
                if (!in_array($file, $struct['files'])) {
                    $struct['files'][] = $file;
                }
            }
        }
        return $struct;
    }

/**
     * The rm command for removing files.
     * Supports multiple files and dirs and also recursive deletes
     *
     * @param    string  $args   the arguments for rm
     * @return   mixed   PEAR_Error or true for success
     * @static
     * @access   public
     */
    function rm($args)
    {
        $opts = System::_parseArgs($args, 'rf'); // "f" does nothing but I like it :-)
        if (PEAR::isError($opts)) {
            return System::raiseError($opts);
        }
        foreach ($opts[0] as $opt) {
            if ($opt[0] == 'r') {
                $do_recursive = true;
            }
        }
        $ret = true;
        if (isset($do_recursive)) {
            $struct = System::_multipleToStruct($opts[1]);
            foreach ($struct['files'] as $file) {
                if (!@unlink($file)) {
                    $ret = false;
                }
            }

rsort($struct['dirs']);
            foreach ($struct['dirs'] as $dir) {
                if (!@rmdir($dir)) {
                    $ret = false;
                }
            }
        } else {
            foreach ($opts[1] as $file) {
                $delete = (is_dir($file)) ? 'rmdir' : 'unlink';
                if (!@$delete($file)) {
                    $ret = false;
                }
            }
        }
        return $ret;
    }

/**
     * Make directories.
     *
     * The -p option will create parent directories
     * @param    string  $args    the name of the director(y|ies) to create
     * @return   bool    True for success
     * @static
     * @access   public
     */
    function mkDir($args)
    {
        $opts = System::_parseArgs($args, 'pm:');
        if (PEAR::isError($opts)) {
            return System::raiseError($opts);
        }

$mode = 0777; // default mode
        foreach ($opts[0] as $opt) {
            if ($opt[0] == 'p') {
                $create_parents = true;
            } elseif ($opt[0] == 'm') {
                // if the mode is clearly an octal number (starts with 0)
                // convert it to decimal
                if (strlen($opt[1]) && $opt[1]{0} == '0') {
                    $opt[1] = octdec($opt[1]);
                } else {
                    // convert to int
                    $opt[1] += 0;
                }
                $mode = $opt[1];
            }
        }

$ret = true;
        if (isset($create_parents)) {
            foreach ($opts[1] as $dir) {
                $dirstack = array();
                while ((!file_exists($dir) || !is_dir($dir)) &&
                        $dir != DIRECTORY_SEPARATOR) {
                    array_unshift($dirstack, $dir);
                    $dir = dirname($dir);
                }

while ($newdir = array_shift($dirstack)) {
                    if (!is_writeable(dirname($newdir))) {
                        $ret = false;
                        break;
                    }

if (!mkdir($newdir, $mode)) {
                        $ret = false;
                    }
                }
            }
        } else {
            foreach($opts[1] as $dir) {
                if ((@file_exists($dir) || !is_dir($dir)) && !mkdir($dir, $mode)) {
                    $ret = false;
                }
            }
        }

return $ret;
    }

/**
     * Concatenate files
     *
     * Usage:
     * 1) $var = System::cat('sample.txt test.txt');
     * 2) System::cat('sample.txt test.txt > final.txt');
     * 3) System::cat('sample.txt test.txt >> final.txt');
     *
     * Note: as the class use fopen, urls should work also (test that)
     *
     * @param    string  $args   the arguments
     * @return   boolean true on success
     * @static
     * @access   public
     */
    function &cat($args)
    {
        $ret = null;
        $files = array();
        if (!is_array($args)) {
            $args = preg_split('/\s+/', $args, -1, PREG_SPLIT_NO_EMPTY);
        }

$count_args = count($args);
        for ($i = 0; $i < $count_args; $i++) {
            if ($args[$i] == '>') {
                $mode = 'wb';
                $outputfile = $args[$i+1];
                break;
            } elseif ($args[$i] == '>>') {
                $mode = 'ab+';
                $outputfile = $args[$i+1];
                break;
            } else {
                $files[] = $args[$i];
            }
        }
        $outputfd = false;
        if (isset($mode)) {
            if (!$outputfd = fopen($outputfile, $mode)) {
                $err = System::raiseError("Could not open $outputfile");
                return $err;
            }
            $ret = true;
        }
        foreach ($files as $file) {
            if (!$fd = fopen($file, 'r')) {
                System::raiseError("Could not open $file");
                continue;
            }
            while ($cont = fread($fd, 2048)) {
                if (is_resource($outputfd)) {
                    fwrite($outputfd, $cont);
                } else {
                    $ret .= $cont;
                }
            }
            fclose($fd);
        }
        if (is_resource($outputfd)) {
            fclose($outputfd);
        }
        return $ret;
    }

/**
     * Creates temporary files or directories. This function will remove
     * the created files when the scripts finish its execution.
     *
     * Usage:
     *   1) $tempfile = System::mktemp("prefix");
     *   2) $tempdir  = System::mktemp("-d prefix");
     *   3) $tempfile = System::mktemp();
     *   4) $tempfile = System::mktemp("-t /var/tmp prefix");
     *
     * prefix -> The string that will be prepended to the temp name
     *           (defaults to "tmp").
     * -d     -> A temporary dir will be created instead of a file.
     * -t     -> The target dir where the temporary (file|dir) will be created. If
     *           this param is missing by default the env vars TMP on Windows or
     *           TMPDIR in Unix will be used. If these vars are also missing
     *           c:\windows\temp or /tmp will be used.
     *
     * @param   string  $args  The arguments
     * @return  mixed   the full path of the created (file|dir) or false
     * @see System::tmpdir()
     * @static
     * @access  public
     */
    function mktemp($args = null)
    {
        static $first_time = true;
        $opts = System::_parseArgs($args, 't:d');
        if (PEAR::isError($opts)) {
            return System::raiseError($opts);
        }

foreach ($opts[0] as $opt) {
            if ($opt[0] == 'd') {
                $tmp_is_dir = true;
            } elseif ($opt[0] == 't') {
                $tmpdir = $opt[1];
            }
        }

$prefix = (isset($opts[1][0])) ? $opts[1][0] : 'tmp';
        if (!isset($tmpdir)) {
            $tmpdir = System::tmpdir();
        }

if (!System::mkDir(array('-p', $tmpdir))) {
            return false;
        }

$tmp = tempnam($tmpdir, $prefix);
        if (isset($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'][] = $tmp;
        if (isset($tmp_is_dir)) {
            //$GLOBALS['_System_temp_files'][] = dirname($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
     *
     * @static
     * @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 $_ENV array, that s why we do tests with _ENV
     *
     * @static
     * @return string The temporary directory on the system
     */
    function tmpdir()
    {
        if (OS_WINDOWS) {
            if ($var = isset($_ENV['TMP']) ? $_ENV['TMP'] : getenv('TMP')) {
                return $var;
            }
            if ($var = isset($_ENV['TEMP']) ? $_ENV['TEMP'] : getenv('TEMP')) {
                return $var;
            }
            if ($var = isset($_ENV['USERPROFILE']) ? $_ENV['USERPROFILE'] : getenv('USERPROFILE')) {
                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 realpath('/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 $program is not found
     *
     * @return mixed A string with the full path or false if not found
     * @static
     * @author Stig Bakken <ssb@php.net>
     */
    function which($program, $fallback = false)
    {
        // enforce API
        if (!is_string($program) || '' == $program) {
            return $fallback;
        }

// 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_SEPARATOR, $path);
        }

if (OS_WINDOWS) {
            $exe_suffixes = getenv('PATHEXT')
                                ? explode(PATH_SEPARATOR, getenv('PATHEXT'))
                                : array('.exe','.bat','.cmd','.com');
            // allow passing a command.exe param
            if (strpos($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:
     * $dir            -> Start the search at this directory
     * -type d         -> return only directories
     * -type f         -> return only files
     * -maxdepth <n>   -> max depth of recursion
     * -name <pattern> -> search pattern (bash style). Multiple -name param allowed
     *
     * @param  mixed Either array or string with the command line
     * @return array Array of found files
     * @static
     *
     */
    function find($args)
    {
        if (!is_array($args)) {
            $args = preg_split('/\s+/', $args, -1, PREG_SPLIT_NO_EMPTY);
        }
        $dir = realpath(array_shift($args));
        if (!$dir) {
            return array();
        }
        $patterns = array();
        $depth = 0;
        $do_files = $do_dirs = true;
        $args_count = count($args);
        for ($i = 0; $i < $args_count; $i++) {
            switch ($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':
                    $name = preg_quote($args[$i+1], '#');
                    // our magic characters ? and * have just been escaped,
                    // so now we change the escaped versions to PCRE operators
                    $name = strtr($name, array('\?' => '.', '\*' => '.*'));
                    $patterns[] = '('.$name.')';
                    $i++;
                    break;
                case '-maxdepth':
                    $depth = $args[$i+1];
                    break;
            }
        }
        $path = System::_dirToStruct($dir, $depth, 0, true);
        if ($do_files && $do_dirs) {
            $files = array_merge($path['files'], $path['dirs']);
        } elseif ($do_dirs) {
            $files = $path['dirs'];
        } else {
            $files = $path['files'];
        }
        if (count($patterns)) {
            $dsq = preg_quote(DIRECTORY_SEPARATOR, '#');
            $pattern = '#(^|'.$dsq.')'.implode('|', $patterns).'($|'.$dsq.')#';
            $ret = array();
            $files_count = count($files);
            for ($i = 0; $i < $files_count; $i++) {
                // only search in the part of the file below the current directory
                $filepart = basename($files[$i]);
                if (preg_match($pattern, $filepart)) {
                    $ret[] = $files[$i];
                }
            }
            return $ret;
        }
        return $files;
    }
}

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