3 * File/Directory manipulation
9 * @author Tomas V.V.Cox <cox@idecnet.com>
10 * @copyright 1997-2009 The Authors
11 * @license http://opensource.org/licenses/bsd-license.php New BSD License
12 * @link http://pear.php.net/package/PEAR
13 * @since File available since Release 0.1
19 require_once 'PEAR.php';
20 require_once 'Console/Getopt.php';
22 $GLOBALS['_System_temp_files'] = array();
25 * System offers cross plattform compatible system functions
27 * Static functions for different operations. Should work under
28 * Unix and Windows. The names and usage has been taken from its respectively
29 * GNU commands. The functions will return (bool) false on error and will
30 * trigger the error with the PHP trigger_error() function (you can silence
31 * the error by prefixing a '@' sign after the function call, but this
32 * is not recommended practice. Instead use an error handler with
33 * {@link set_error_handler()}).
35 * Documentation on this class you can find in:
36 * http://pear.php.net/manual/
39 * if (!@System::rm('-r file1 dir1')) {
40 * print "could not delete file1 or dir1";
43 * In case you need to to pass file names with spaces,
44 * pass the params as an array:
46 * System::rm(array('-r', $file1, $dir1));
50 * @author Tomas V.V. Cox <cox@idecnet.com>
51 * @copyright 1997-2006 The PHP Group
52 * @license http://opensource.org/licenses/bsd-license.php New BSD License
53 * @version Release: 1.10.1
54 * @link http://pear.php.net/package/PEAR
55 * @since Class available since Release 0.1
61 * returns the commandline arguments of a function
63 * @param string $argv the commandline
64 * @param string $short_options the allowed option short-tags
65 * @param string $long_options the allowed option long-tags
66 * @return array the given options and there values
68 public static function _parseArgs($argv, $short_options, $long_options = null)
70 if (!is_array($argv) && $argv !== null) {
72 // Quote all items that are a short option
73 $av = preg_split('/(\A| )--?[a-z0-9]+[ =]?((?<!\\\\)((,\s*)|((?<!,)\s+))?)/i', $argv, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_OFFSET_CAPTURE);
77 if ($b{0} == '"' || $b{0} == "'") {
81 $escape = escapeshellarg($b);
82 $pos = $a[1] + $offset;
83 $argv = substr_replace($argv, $escape, $pos, strlen($b));
88 // Find all items, quoted or otherwise
89 preg_match_all("/(?:[\"'])(.*?)(?:['\"])|([^\s]+)/", $argv, $av);
91 foreach ($av[2] as $k => $a) {
95 $argv[$k] = trim($a) ;
99 return Console_Getopt::getopt2($argv, $short_options, $long_options);
103 * Output errors with PHP trigger_error(). You can silence the errors
104 * with prefixing a "@" sign to the function call: @System::mkdir(..);
106 * @param mixed $error a PEAR error or a string with the error message
109 protected static function raiseError($error)
111 if (PEAR::isError($error)) {
112 $error = $error->getMessage();
114 trigger_error($error, E_USER_WARNING);
119 * Creates a nested array representing the structure of a directory
121 * System::_dirToStruct('dir1', 0) =>
135 * @param string $sPath Name of the directory
136 * @param integer $maxinst max. deep of the lookup
137 * @param integer $aktinst starting deep of the lookup
138 * @param bool $silent if true, do not emit errors.
139 * @return array the structure of the dir
141 protected static function _dirToStruct($sPath, $maxinst, $aktinst = 0, $silent = false)
143 $struct = array('dirs' => array(), 'files' => array());
144 if (($dir = @opendir($sPath)) === false) {
146 System::raiseError("Could not open dir $sPath");
148 return $struct; // XXX could not open error
151 $struct['dirs'][] = $sPath = realpath($sPath); // XXX don't add if '.' or '..' ?
153 while (false !== ($file = readdir($dir))) {
154 if ($file != '.' && $file != '..') {
161 if ($aktinst < $maxinst || $maxinst == 0) {
162 foreach ($list as $val) {
163 $path = $sPath . DIRECTORY_SEPARATOR . $val;
164 if (is_dir($path) && !is_link($path)) {
165 $tmp = System::_dirToStruct($path, $maxinst, $aktinst+1, $silent);
166 $struct = array_merge_recursive($struct, $tmp);
168 $struct['files'][] = $path;
177 * Creates a nested array representing the structure of a directory and files
179 * @param array $files Array listing files and dirs
182 * @see System::_dirToStruct()
184 protected static function _multipleToStruct($files)
186 $struct = array('dirs' => array(), 'files' => array());
187 settype($files, 'array');
188 foreach ($files as $file) {
189 if (is_dir($file) && !is_link($file)) {
190 $tmp = System::_dirToStruct($file, 0);
191 $struct = array_merge_recursive($tmp, $struct);
193 if (!in_array($file, $struct['files'])) {
194 $struct['files'][] = $file;
202 * The rm command for removing files.
203 * Supports multiple files and dirs and also recursive deletes
205 * @param string $args the arguments for rm
206 * @return mixed PEAR_Error or true for success
210 public static function rm($args)
212 $opts = System::_parseArgs($args, 'rf'); // "f" does nothing but I like it :-)
213 if (PEAR::isError($opts)) {
214 return System::raiseError($opts);
216 foreach ($opts[0] as $opt) {
217 if ($opt[0] == 'r') {
218 $do_recursive = true;
222 if (isset($do_recursive)) {
223 $struct = System::_multipleToStruct($opts[1]);
224 foreach ($struct['files'] as $file) {
225 if (!@unlink($file)) {
230 rsort($struct['dirs']);
231 foreach ($struct['dirs'] as $dir) {
237 foreach ($opts[1] as $file) {
238 $delete = (is_dir($file)) ? 'rmdir' : 'unlink';
239 if (!@$delete($file)) {
250 * The -p option will create parent directories
251 * @param string $args the name of the director(y|ies) to create
252 * @return bool True for success
254 public static function mkDir($args)
256 $opts = System::_parseArgs($args, 'pm:');
257 if (PEAR::isError($opts)) {
258 return System::raiseError($opts);
261 $mode = 0777; // default mode
262 foreach ($opts[0] as $opt) {
263 if ($opt[0] == 'p') {
264 $create_parents = true;
265 } elseif ($opt[0] == 'm') {
266 // if the mode is clearly an octal number (starts with 0)
267 // convert it to decimal
268 if (strlen($opt[1]) && $opt[1]{0} == '0') {
269 $opt[1] = octdec($opt[1]);
279 if (isset($create_parents)) {
280 foreach ($opts[1] as $dir) {
282 while ((!file_exists($dir) || !is_dir($dir)) &&
283 $dir != DIRECTORY_SEPARATOR) {
284 array_unshift($dirstack, $dir);
285 $dir = dirname($dir);
288 while ($newdir = array_shift($dirstack)) {
289 if (!is_writeable(dirname($newdir))) {
294 if (!mkdir($newdir, $mode)) {
300 foreach($opts[1] as $dir) {
301 if ((@file_exists($dir) || !is_dir($dir)) && !mkdir($dir, $mode)) {
314 * 1) $var = System::cat('sample.txt test.txt');
315 * 2) System::cat('sample.txt test.txt > final.txt');
316 * 3) System::cat('sample.txt test.txt >> final.txt');
318 * Note: as the class use fopen, urls should work also (test that)
320 * @param string $args the arguments
321 * @return boolean true on success
323 public static function &cat($args)
327 if (!is_array($args)) {
328 $args = preg_split('/\s+/', $args, -1, PREG_SPLIT_NO_EMPTY);
331 $count_args = count($args);
332 for ($i = 0; $i < $count_args; $i++) {
333 if ($args[$i] == '>') {
335 $outputfile = $args[$i+1];
337 } elseif ($args[$i] == '>>') {
339 $outputfile = $args[$i+1];
342 $files[] = $args[$i];
347 if (!$outputfd = fopen($outputfile, $mode)) {
348 $err = System::raiseError("Could not open $outputfile");
353 foreach ($files as $file) {
354 if (!$fd = fopen($file, 'r')) {
355 System::raiseError("Could not open $file");
358 while ($cont = fread($fd, 2048)) {
359 if (is_resource($outputfd)) {
360 fwrite($outputfd, $cont);
367 if (is_resource($outputfd)) {
374 * Creates temporary files or directories. This function will remove
375 * the created files when the scripts finish its execution.
378 * 1) $tempfile = System::mktemp("prefix");
379 * 2) $tempdir = System::mktemp("-d prefix");
380 * 3) $tempfile = System::mktemp();
381 * 4) $tempfile = System::mktemp("-t /var/tmp prefix");
383 * prefix -> The string that will be prepended to the temp name
384 * (defaults to "tmp").
385 * -d -> A temporary dir will be created instead of a file.
386 * -t -> The target dir where the temporary (file|dir) will be created. If
387 * this param is missing by default the env vars TMP on Windows or
388 * TMPDIR in Unix will be used. If these vars are also missing
389 * c:\windows\temp or /tmp will be used.
391 * @param string $args The arguments
392 * @return mixed the full path of the created (file|dir) or false
393 * @see System::tmpdir()
395 public static function mktemp($args = null)
397 static $first_time = true;
398 $opts = System::_parseArgs($args, 't:d');
399 if (PEAR::isError($opts)) {
400 return System::raiseError($opts);
403 foreach ($opts[0] as $opt) {
404 if ($opt[0] == 'd') {
406 } elseif ($opt[0] == 't') {
411 $prefix = (isset($opts[1][0])) ? $opts[1][0] : 'tmp';
412 if (!isset($tmpdir)) {
413 $tmpdir = System::tmpdir();
416 if (!System::mkDir(array('-p', $tmpdir))) {
420 $tmp = tempnam($tmpdir, $prefix);
421 if (isset($tmp_is_dir)) {
422 unlink($tmp); // be careful possible race condition here
423 if (!mkdir($tmp, 0700)) {
424 return System::raiseError("Unable to create temporary directory $tmpdir");
428 $GLOBALS['_System_temp_files'][] = $tmp;
429 if (isset($tmp_is_dir)) {
430 //$GLOBALS['_System_temp_files'][] = dirname($tmp);
434 PEAR::registerShutdownFunc(array('System', '_removeTmpFiles'));
442 * Remove temporary files created my mkTemp. This function is executed
443 * at script shutdown time
445 public static function _removeTmpFiles()
447 if (count($GLOBALS['_System_temp_files'])) {
448 $delete = $GLOBALS['_System_temp_files'];
449 array_unshift($delete, '-r');
451 $GLOBALS['_System_temp_files'] = array();
456 * Get the path of the temporal directory set in the system
457 * by looking in its environments variables.
458 * Note: php.ini-recommended removes the "E" from the variables_order setting,
459 * making unavaible the $_ENV array, that s why we do tests with _ENV
461 * @return string The temporary directory on the system
463 public static function tmpdir()
466 if ($var = isset($_ENV['TMP']) ? $_ENV['TMP'] : getenv('TMP')) {
469 if ($var = isset($_ENV['TEMP']) ? $_ENV['TEMP'] : getenv('TEMP')) {
472 if ($var = isset($_ENV['USERPROFILE']) ? $_ENV['USERPROFILE'] : getenv('USERPROFILE')) {
475 if ($var = isset($_ENV['windir']) ? $_ENV['windir'] : getenv('windir')) {
478 return getenv('SystemRoot') . '\temp';
480 if ($var = isset($_ENV['TMPDIR']) ? $_ENV['TMPDIR'] : getenv('TMPDIR')) {
483 return realpath('/tmp');
487 * The "which" command (show the full path of a command)
489 * @param string $program The command to search for
490 * @param mixed $fallback Value to return if $program is not found
492 * @return mixed A string with the full path or false if not found
493 * @author Stig Bakken <ssb@php.net>
495 public static function which($program, $fallback = false)
498 if (!is_string($program) || '' == $program) {
503 if (basename($program) != $program) {
504 $path_elements[] = dirname($program);
505 $program = basename($program);
507 $path = getenv('PATH');
509 $path = getenv('Path'); // some OSes are just stupid enough to do this
512 $path_elements = explode(PATH_SEPARATOR, $path);
516 $exe_suffixes = getenv('PATHEXT')
517 ? explode(PATH_SEPARATOR, getenv('PATHEXT'))
518 : array('.exe','.bat','.cmd','.com');
519 // allow passing a command.exe param
520 if (strpos($program, '.') !== false) {
521 array_unshift($exe_suffixes, '');
524 $exe_suffixes = array('');
527 foreach ($exe_suffixes as $suff) {
528 foreach ($path_elements as $dir) {
529 $file = $dir . DIRECTORY_SEPARATOR . $program . $suff;
530 if (is_executable($file)) {
543 * System::find($dir);
544 * System::find("$dir -type d");
545 * System::find("$dir -type f");
546 * System::find("$dir -name *.php");
547 * System::find("$dir -name *.php -name *.htm*");
548 * System::find("$dir -maxdepth 1");
551 * $dir -> Start the search at this directory
552 * -type d -> return only directories
553 * -type f -> return only files
554 * -maxdepth <n> -> max depth of recursion
555 * -name <pattern> -> search pattern (bash style). Multiple -name param allowed
557 * @param mixed Either array or string with the command line
558 * @return array Array of found files
560 public static function find($args)
562 if (!is_array($args)) {
563 $args = preg_split('/\s+/', $args, -1, PREG_SPLIT_NO_EMPTY);
565 $dir = realpath(array_shift($args));
571 $do_files = $do_dirs = true;
572 $args_count = count($args);
573 for ($i = 0; $i < $args_count; $i++) {
576 if (in_array($args[$i+1], array('d', 'f'))) {
577 if ($args[$i+1] == 'd') {
586 $name = preg_quote($args[$i+1], '#');
587 // our magic characters ? and * have just been escaped,
588 // so now we change the escaped versions to PCRE operators
589 $name = strtr($name, array('\?' => '.', '\*' => '.*'));
590 $patterns[] = '('.$name.')';
594 $depth = $args[$i+1];
598 $path = System::_dirToStruct($dir, $depth, 0, true);
599 if ($do_files && $do_dirs) {
600 $files = array_merge($path['files'], $path['dirs']);
601 } elseif ($do_dirs) {
602 $files = $path['dirs'];
604 $files = $path['files'];
606 if (count($patterns)) {
607 $dsq = preg_quote(DIRECTORY_SEPARATOR, '#');
608 $pattern = '#(^|'.$dsq.')'.implode('|', $patterns).'($|'.$dsq.')#';
610 $files_count = count($files);
611 for ($i = 0; $i < $files_count; $i++) {
612 // only search in the part of the file below the current directory
613 $filepart = basename($files[$i]);
614 if (preg_match($pattern, $filepart)) {