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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 * @copyright 1997-2006 The PHP Group * @license http://opensource.org/licenses/bsd-license.php New BSD License * @version Release: 1.10.15 * @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 $long_options the allowed option long-tags * @return array the given options and there values */ public static function _parseArgs($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]+[ =]?((? $a) { if (empty($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 $error a PEAR error or a string with the error message * @return bool false */ protected static function raiseError($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 $silent if true, do not emit errors. * @return array the structure of the dir */ protected static function _dirToStruct($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 $files Array listing files and dirs * @return array * @static * @see System::_dirToStruct() */ protected static function _multipleToStruct($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 $args the arguments for rm * @return mixed PEAR_Error or true for success * @static * @access public */ public static function rm($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 $args the name of the director(y|ies) to create * @return bool True for success */ public static function mkDir($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 * * @param string $args the arguments * @return boolean true on success */ public static function &cat($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 $args The arguments * @return mixed the full path of the created (file|dir) or false * @see System::tmpdir() */ public static function mktemp($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 $tmp; } /** * Remove temporary files created my mkTemp. This function is executed * at script shutdown time */ public static function _removeTmpFiles() { if (count($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 $_ENV array, that s why we do tests with _ENV * * @return string The temporary directory on the system */ public static function tmpdir() { if (OS_WINDOWS) { if ($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(function_exists('sys_get_temp_dir') ? sys_get_temp_dir() : '/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 $program is not found * * @return mixed A string with the full path or false if not found * @author Stig Bakken */ public static function which($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 { $path = getenv('PATH'); if (!$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, ''); } } else { $exe_suffixes = array(''); } foreach ($exe_suffixes as $suff) { foreach ($path_elements as $dir) { $file = $dir . DIRECTORY_SEPARATOR . $program . $suff; // It's possible to run a .bat on Windows that is_executable // would return false for. The is_executable check is meaningless... if (OS_WINDOWS) { if (file_exists($file)) { return $file; } } else { if (is_executable($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 implemented: * $dir -> Start the search at this directory * -type d -> return only directories * -type f -> return only files * -maxdepth -> max depth of recursion * -name -> search pattern (bash style). Multiple -name param allowed * * @param mixed Either array or string with the command line * @return array Array of found files */ public static function find($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; } }