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PHP Cross Reference of DokuWiki |
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1 <?php 2 3 /** 4 * File IO functions 5 * 6 * @license GPL 2 (http://www.gnu.org/licenses/gpl.html) 7 * @author Andreas Gohr <andi@splitbrain.org> 8 */ 9 10 use dokuwiki\Utf8\PhpString; 11 use dokuwiki\HTTP\DokuHTTPClient; 12 use dokuwiki\Extension\Event; 13 14 /** 15 * Removes empty directories 16 * 17 * Sends IO_NAMESPACE_DELETED events for 'pages' and 'media' namespaces. 18 * Event data: 19 * $data[0] ns: The colon separated namespace path minus the trailing page name. 20 * $data[1] ns_type: 'pages' or 'media' namespace tree. 21 * 22 * @param string $id - a pageid, the namespace of that id will be tried to deleted 23 * @param string $basedir - the config name of the type to delete (datadir or mediadir usally) 24 * @return bool - true if at least one namespace was deleted 25 * 26 * @author Andreas Gohr <andi@splitbrain.org> 27 * @author Ben Coburn <btcoburn@silicodon.net> 28 */ 29 function io_sweepNS($id, $basedir = 'datadir') 30 { 31 global $conf; 32 $types = ['datadir' => 'pages', 'mediadir' => 'media']; 33 $ns_type = ($types[$basedir] ?? false); 34 35 $delone = false; 36 37 //scan all namespaces 38 while (($id = getNS($id)) !== false) { 39 $dir = $conf[$basedir] . '/' . utf8_encodeFN(str_replace(':', '/', $id)); 40 41 //try to delete dir else return 42 if (@rmdir($dir)) { 43 if ($ns_type !== false) { 44 $data = [$id, $ns_type]; 45 $delone = true; // we deleted at least one dir 46 Event::createAndTrigger('IO_NAMESPACE_DELETED', $data); 47 } 48 } else { 49 return $delone; 50 } 51 } 52 return $delone; 53 } 54 55 /** 56 * Used to read in a DokuWiki page from file, and send IO_WIKIPAGE_READ events. 57 * 58 * Generates the action event which delegates to io_readFile(). 59 * Action plugins are allowed to modify the page content in transit. 60 * The file path should not be changed. 61 * 62 * Event data: 63 * $data[0] The raw arguments for io_readFile as an array. 64 * $data[1] ns: The colon separated namespace path minus the trailing page name. (false if root ns) 65 * $data[2] page_name: The wiki page name. 66 * $data[3] rev: The page revision, false for current wiki pages. 67 * 68 * @param string $file filename 69 * @param string $id page id 70 * @param bool|int|string $rev revision timestamp 71 * @return string 72 * 73 * @author Ben Coburn <btcoburn@silicodon.net> 74 */ 75 function io_readWikiPage($file, $id, $rev = false) 76 { 77 if (empty($rev)) { 78 $rev = false; 79 } 80 $data = [[$file, true], getNS($id), noNS($id), $rev]; 81 return Event::createAndTrigger('IO_WIKIPAGE_READ', $data, '_io_readWikiPage_action', false); 82 } 83 84 /** 85 * Callback adapter for io_readFile(). 86 * 87 * @param array $data event data 88 * @return string 89 * 90 * @author Ben Coburn <btcoburn@silicodon.net> 91 */ 92 function _io_readWikiPage_action($data) 93 { 94 if (is_array($data) && is_array($data[0]) && count($data[0]) === 2) { 95 return io_readFile(...$data[0]); 96 } else { 97 return ''; //callback error 98 } 99 } 100 101 /** 102 * Returns content of $file as cleaned string. 103 * 104 * Uses gzip if extension is .gz 105 * 106 * If you want to use the returned value in unserialize 107 * be sure to set $clean to false! 108 * 109 * 110 * @param string $file filename 111 * @param bool $clean 112 * @return string|bool the file contents or false on error 113 * 114 * @author Andreas Gohr <andi@splitbrain.org> 115 */ 116 function io_readFile($file, $clean = true) 117 { 118 $ret = ''; 119 if (file_exists($file)) { 120 if (str_ends_with($file, '.gz')) { 121 if (!DOKU_HAS_GZIP) return false; 122 $ret = gzfile($file); 123 if (is_array($ret)) { 124 $ret = implode('', $ret); 125 } 126 } elseif (str_ends_with($file, '.bz2')) { 127 if (!DOKU_HAS_BZIP) return false; 128 $ret = bzfile($file); 129 } else { 130 $ret = file_get_contents($file); 131 } 132 } 133 if ($ret === null) return false; 134 if ($ret !== false && $clean) { 135 return cleanText($ret); 136 } else { 137 return $ret; 138 } 139 } 140 141 /** 142 * Returns the content of a .bz2 compressed file as string 143 * 144 * @param string $file filename 145 * @param bool $array return array of lines 146 * @return string|array|bool content or false on error 147 * 148 * @author marcel senf <marcel@rucksackreinigung.de> 149 * @author Andreas Gohr <andi@splitbrain.org> 150 */ 151 function bzfile($file, $array = false) 152 { 153 $bz = bzopen($file, "r"); 154 if ($bz === false) return false; 155 156 if ($array) { 157 $lines = []; 158 } 159 $str = ''; 160 while (!feof($bz)) { 161 //8192 seems to be the maximum buffersize? 162 $buffer = bzread($bz, 8192); 163 if (($buffer === false) || (bzerrno($bz) !== 0)) { 164 return false; 165 } 166 $str .= $buffer; 167 if ($array) { 168 $pos = strpos($str, "\n"); 169 while ($pos !== false) { 170 $lines[] = substr($str, 0, $pos + 1); 171 $str = substr($str, $pos + 1); 172 $pos = strpos($str, "\n"); 173 } 174 } 175 } 176 bzclose($bz); 177 if ($array) { 178 if ($str !== '') { 179 $lines[] = $str; 180 } 181 return $lines; 182 } 183 return $str; 184 } 185 186 /** 187 * Used to write out a DokuWiki page to file, and send IO_WIKIPAGE_WRITE events. 188 * 189 * This generates an action event and delegates to io_saveFile(). 190 * Action plugins are allowed to modify the page content in transit. 191 * The file path should not be changed. 192 * (The append parameter is set to false.) 193 * 194 * Event data: 195 * $data[0] The raw arguments for io_saveFile as an array. 196 * $data[1] ns: The colon separated namespace path minus the trailing page name. (false if root ns) 197 * $data[2] page_name: The wiki page name. 198 * $data[3] rev: The page revision, false for current wiki pages. 199 * 200 * @param string $file filename 201 * @param string $content 202 * @param string $id page id 203 * @param int|bool|string $rev timestamp of revision 204 * @return bool 205 * 206 * @author Ben Coburn <btcoburn@silicodon.net> 207 */ 208 function io_writeWikiPage($file, $content, $id, $rev = false) 209 { 210 if (empty($rev)) { 211 $rev = false; 212 } 213 if ($rev === false) { 214 io_createNamespace($id); // create namespaces as needed 215 } 216 $data = [[$file, $content, false], getNS($id), noNS($id), $rev]; 217 return Event::createAndTrigger('IO_WIKIPAGE_WRITE', $data, '_io_writeWikiPage_action', false); 218 } 219 220 /** 221 * Callback adapter for io_saveFile(). 222 * 223 * @param array $data event data 224 * @return bool 225 * 226 * @author Ben Coburn <btcoburn@silicodon.net> 227 */ 228 function _io_writeWikiPage_action($data) 229 { 230 if (is_array($data) && is_array($data[0]) && count($data[0]) === 3) { 231 $ok = io_saveFile(...$data[0]); 232 // for attic files make sure the file has the mtime of the revision 233 if ($ok && is_int($data[3]) && $data[3] > 0) { 234 @touch($data[0][0], $data[3]); 235 } 236 return $ok; 237 } else { 238 return false; //callback error 239 } 240 } 241 242 /** 243 * Internal function to save contents to a file. 244 * 245 * @param string $file filename path to file 246 * @param string $content 247 * @param bool $append 248 * @return bool true on success, otherwise false 249 * 250 * @author Andreas Gohr <andi@splitbrain.org> 251 */ 252 function _io_saveFile($file, $content, $append) 253 { 254 global $conf; 255 $mode = ($append) ? 'ab' : 'wb'; 256 $fileexists = file_exists($file); 257 258 if (str_ends_with($file, '.gz')) { 259 if (!DOKU_HAS_GZIP) return false; 260 $fh = @gzopen($file, $mode . '9'); 261 if (!$fh) return false; 262 gzwrite($fh, $content); 263 gzclose($fh); 264 } elseif (str_ends_with($file, '.bz2')) { 265 if (!DOKU_HAS_BZIP) return false; 266 if ($append) { 267 $bzcontent = bzfile($file); 268 if ($bzcontent === false) return false; 269 $content = $bzcontent . $content; 270 } 271 $fh = @bzopen($file, 'w'); 272 if (!$fh) return false; 273 bzwrite($fh, $content); 274 bzclose($fh); 275 } else { 276 $fh = @fopen($file, $mode); 277 if (!$fh) return false; 278 fwrite($fh, $content); 279 fclose($fh); 280 } 281 282 if (!$fileexists && $conf['fperm']) { 283 chmod($file, $conf['fperm']); 284 } 285 return true; 286 } 287 288 /** 289 * Saves $content to $file. 290 * 291 * If the third parameter is set to true the given content 292 * will be appended. 293 * 294 * Uses gzip if extension is .gz 295 * and bz2 if extension is .bz2 296 * 297 * @param string $file filename path to file 298 * @param string $content 299 * @param bool $append 300 * @return bool true on success, otherwise false 301 * 302 * @author Andreas Gohr <andi@splitbrain.org> 303 */ 304 function io_saveFile($file, $content, $append = false) 305 { 306 io_makeFileDir($file); 307 io_lock($file); 308 if (!_io_saveFile($file, $content, $append)) { 309 msg("Writing $file failed", -1); 310 io_unlock($file); 311 return false; 312 } 313 io_unlock($file); 314 return true; 315 } 316 317 /** 318 * Replace one or more occurrences of a line in a file. 319 * 320 * The default, when $maxlines is 0 is to delete all matching lines then append a single line. 321 * A regex that matches any part of the line will remove the entire line in this mode. 322 * Captures in $newline are not available. 323 * 324 * Otherwise each line is matched and replaced individually, up to the first $maxlines lines 325 * or all lines if $maxlines is -1. If $regex is true then captures can be used in $newline. 326 * 327 * Be sure to include the trailing newline in $oldline when replacing entire lines. 328 * 329 * Uses gzip if extension is .gz 330 * and bz2 if extension is .bz2 331 * 332 * @param string $file filename 333 * @param string $oldline exact linematch to remove 334 * @param string $newline new line to insert 335 * @param bool $regex use regexp? 336 * @param int $maxlines number of occurrences of the line to replace 337 * @return bool true on success 338 * 339 * @author Steven Danz <steven-danz@kc.rr.com> 340 * @author Christopher Smith <chris@jalakai.co.uk> 341 * @author Patrick Brown <ptbrown@whoopdedo.org> 342 */ 343 function io_replaceInFile($file, $oldline, $newline, $regex = false, $maxlines = 0) 344 { 345 if ((string)$oldline === '') { 346 trigger_error('$oldline parameter cannot be empty in io_replaceInFile()', E_USER_WARNING); 347 return false; 348 } 349 350 if (!file_exists($file)) return true; 351 352 io_lock($file); 353 354 // load into array 355 if (str_ends_with($file, '.gz')) { 356 if (!DOKU_HAS_GZIP) return false; 357 $lines = gzfile($file); 358 } elseif (str_ends_with($file, '.bz2')) { 359 if (!DOKU_HAS_BZIP) return false; 360 $lines = bzfile($file, true); 361 } else { 362 $lines = file($file); 363 } 364 365 // make non-regexes into regexes 366 $pattern = $regex ? $oldline : '/^' . preg_quote($oldline, '/') . '$/'; 367 $replace = $regex ? $newline : addcslashes($newline, '\$'); 368 369 // remove matching lines 370 if ($maxlines > 0) { 371 $count = 0; 372 $matched = 0; 373 foreach ($lines as $i => $line) { 374 if ($count >= $maxlines) break; 375 // $matched will be set to 0|1 depending on whether pattern is matched and line replaced 376 $lines[$i] = preg_replace($pattern, $replace, $line, -1, $matched); 377 if ($matched) { 378 $count++; 379 } 380 } 381 } elseif ($maxlines == 0) { 382 $lines = preg_grep($pattern, $lines, PREG_GREP_INVERT); 383 if ((string)$newline !== '') { 384 $lines[] = $newline; 385 } 386 } else { 387 $lines = preg_replace($pattern, $replace, $lines); 388 } 389 390 if (count($lines)) { 391 if (!_io_saveFile($file, implode('', $lines), false)) { 392 msg("Removing content from $file failed", -1); 393 io_unlock($file); 394 return false; 395 } 396 } else { 397 @unlink($file); 398 } 399 400 io_unlock($file); 401 return true; 402 } 403 404 /** 405 * Delete lines that match $badline from $file. 406 * 407 * Be sure to include the trailing newline in $badline 408 * 409 * @param string $file filename 410 * @param string $badline exact linematch to remove 411 * @param bool $regex use regexp? 412 * @return bool true on success 413 * 414 * @author Patrick Brown <ptbrown@whoopdedo.org> 415 */ 416 function io_deleteFromFile($file, $badline, $regex = false) 417 { 418 return io_replaceInFile($file, $badline, '', $regex, 0); 419 } 420 421 /** 422 * Tries to lock a file 423 * 424 * Locking is only done for io_savefile and uses directories 425 * inside $conf['lockdir'] 426 * 427 * It waits maximal 3 seconds for the lock, after this time 428 * the lock is assumed to be stale and the function goes on 429 * 430 * @param string $file filename 431 * 432 * @author Andreas Gohr <andi@splitbrain.org> 433 */ 434 function io_lock($file) 435 { 436 global $conf; 437 438 $lockDir = $conf['lockdir'] . '/' . md5($file); 439 @ignore_user_abort(1); 440 441 $timeStart = time(); 442 do { 443 //waited longer than 3 seconds? -> stale lock 444 if ((time() - $timeStart) > 3) break; 445 $locked = @mkdir($lockDir); 446 if ($locked) { 447 if ($conf['dperm']) { 448 chmod($lockDir, $conf['dperm']); 449 } 450 break; 451 } 452 usleep(50); 453 } while ($locked === false); 454 } 455 456 /** 457 * Unlocks a file 458 * 459 * @param string $file filename 460 * 461 * @author Andreas Gohr <andi@splitbrain.org> 462 */ 463 function io_unlock($file) 464 { 465 global $conf; 466 467 $lockDir = $conf['lockdir'] . '/' . md5($file); 468 @rmdir($lockDir); 469 @ignore_user_abort(0); 470 } 471 472 /** 473 * Create missing namespace directories and send the IO_NAMESPACE_CREATED events 474 * in the order of directory creation. (Parent directories first.) 475 * 476 * Event data: 477 * $data[0] ns: The colon separated namespace path minus the trailing page name. 478 * $data[1] ns_type: 'pages' or 'media' namespace tree. 479 * 480 * @param string $id page id 481 * @param string $ns_type 'pages' or 'media' 482 * 483 * @author Ben Coburn <btcoburn@silicodon.net> 484 */ 485 function io_createNamespace($id, $ns_type = 'pages') 486 { 487 // verify ns_type 488 $types = ['pages' => 'wikiFN', 'media' => 'mediaFN']; 489 if (!isset($types[$ns_type])) { 490 trigger_error('Bad $ns_type parameter for io_createNamespace().'); 491 return; 492 } 493 // make event list 494 $missing = []; 495 $ns_stack = explode(':', $id); 496 $ns = $id; 497 $tmp = dirname($file = call_user_func($types[$ns_type], $ns)); 498 while (!@is_dir($tmp) && !(file_exists($tmp) && !is_dir($tmp))) { 499 array_pop($ns_stack); 500 $ns = implode(':', $ns_stack); 501 if (strlen($ns) == 0) { 502 break; 503 } 504 $missing[] = $ns; 505 $tmp = dirname(call_user_func($types[$ns_type], $ns)); 506 } 507 // make directories 508 io_makeFileDir($file); 509 // send the events 510 $missing = array_reverse($missing); // inside out 511 foreach ($missing as $ns) { 512 $data = [$ns, $ns_type]; 513 Event::createAndTrigger('IO_NAMESPACE_CREATED', $data); 514 } 515 } 516 517 /** 518 * Create the directory needed for the given file 519 * 520 * @param string $file file name 521 * 522 * @author Andreas Gohr <andi@splitbrain.org> 523 */ 524 function io_makeFileDir($file) 525 { 526 $dir = dirname($file); 527 if (!@is_dir($dir)) { 528 if (!io_mkdir_p($dir)) { 529 msg("Creating directory $dir failed", -1); 530 } 531 } 532 } 533 534 /** 535 * Creates a directory hierachy. 536 * 537 * @param string $target filename 538 * @return bool 539 * 540 * @link http://php.net/manual/en/function.mkdir.php 541 * @author <saint@corenova.com> 542 * @author Andreas Gohr <andi@splitbrain.org> 543 */ 544 function io_mkdir_p($target) 545 { 546 global $conf; 547 if (@is_dir($target) || empty($target)) return true; // best case check first 548 if (file_exists($target) && !is_dir($target)) return false; 549 //recursion 550 if (io_mkdir_p(substr($target, 0, strrpos($target, '/')))) { 551 $ret = @mkdir($target); // crawl back up & create dir tree 552 if ($ret && !empty($conf['dperm'])) { 553 chmod($target, $conf['dperm']); 554 } 555 return $ret; 556 } 557 return false; 558 } 559 560 /** 561 * Recursively delete a directory 562 * 563 * @param string $path 564 * @param bool $removefiles defaults to false which will delete empty directories only 565 * @return bool 566 * 567 * @author Andreas Gohr <andi@splitbrain.org> 568 */ 569 function io_rmdir($path, $removefiles = false) 570 { 571 if (!is_string($path) || $path == "") return false; 572 if (!file_exists($path)) return true; // it's already gone or was never there, count as success 573 574 if (is_dir($path) && !is_link($path)) { 575 $dirs = []; 576 $files = []; 577 if (!$dh = @opendir($path)) return false; 578 while (false !== ($f = readdir($dh))) { 579 if ($f == '..' || $f == '.') continue; 580 581 // collect dirs and files first 582 if (is_dir("$path/$f") && !is_link("$path/$f")) { 583 $dirs[] = "$path/$f"; 584 } elseif ($removefiles) { 585 $files[] = "$path/$f"; 586 } else { 587 return false; // abort when non empty 588 } 589 } 590 closedir($dh); 591 // now traverse into directories first 592 foreach ($dirs as $dir) { 593 if (!io_rmdir($dir, $removefiles)) return false; // abort on any error 594 } 595 // now delete files 596 foreach ($files as $file) { 597 if (!@unlink($file)) return false; //abort on any error 598 } 599 // remove self 600 return @rmdir($path); 601 } elseif ($removefiles) { 602 return @unlink($path); 603 } 604 return false; 605 } 606 607 /** 608 * Creates a unique temporary directory and returns 609 * its path. 610 * 611 * @return false|string path to new directory or false 612 * @throws Exception 613 * 614 * @author Michael Klier <chi@chimeric.de> 615 */ 616 function io_mktmpdir() 617 { 618 global $conf; 619 620 $base = $conf['tmpdir']; 621 $dir = md5(uniqid(random_int(0, mt_getrandmax()), true)); 622 $tmpdir = $base . '/' . $dir; 623 624 if (io_mkdir_p($tmpdir)) { 625 return $tmpdir; 626 } else { 627 return false; 628 } 629 } 630 631 /** 632 * downloads a file from the net and saves it 633 * 634 * if $useAttachment is false, 635 * - $file is the full filename to save the file, incl. path 636 * - if successful will return true, false otherwise 637 * 638 * if $useAttachment is true, 639 * - $file is the directory where the file should be saved 640 * - if successful will return the name used for the saved file, false otherwise 641 * 642 * @param string $url url to download 643 * @param string $file path to file or directory where to save 644 * @param bool $useAttachment true: try to use name of download, uses otherwise $defaultName 645 * false: uses $file as path to file 646 * @param string $defaultName fallback for if using $useAttachment 647 * @param int $maxSize maximum file size 648 * @return bool|string if failed false, otherwise true or the name of the file in the given dir 649 * 650 * @author Andreas Gohr <andi@splitbrain.org> 651 * @author Chris Smith <chris@jalakai.co.uk> 652 */ 653 function io_download($url, $file, $useAttachment = false, $defaultName = '', $maxSize = 2_097_152) 654 { 655 global $conf; 656 $http = new DokuHTTPClient(); 657 $http->max_bodysize = $maxSize; 658 $http->timeout = 25; //max. 25 sec 659 $http->keep_alive = false; // we do single ops here, no need for keep-alive 660 661 $data = $http->get($url); 662 if (!$data) return false; 663 664 $name = ''; 665 if ($useAttachment) { 666 if (isset($http->resp_headers['content-disposition'])) { 667 $content_disposition = $http->resp_headers['content-disposition']; 668 $match = []; 669 if ( 670 is_string($content_disposition) && 671 preg_match('/attachment;\s*filename\s*=\s*"([^"]*)"/i', $content_disposition, $match) 672 ) { 673 $name = PhpString::basename($match[1]); 674 } 675 } 676 677 if (!$name) { 678 if (!$defaultName) return false; 679 $name = $defaultName; 680 } 681 682 $file .= $name; 683 } 684 685 $fileexists = file_exists($file); 686 $fp = @fopen($file, "w"); 687 if (!$fp) return false; 688 fwrite($fp, $data); 689 fclose($fp); 690 if (!$fileexists && $conf['fperm']) { 691 chmod($file, $conf['fperm']); 692 } 693 if ($useAttachment) return $name; 694 return true; 695 } 696 697 /** 698 * Windows compatible rename 699 * 700 * rename() can not overwrite existing files on Windows 701 * this function will use copy/unlink instead 702 * 703 * @param string $from 704 * @param string $to 705 * @return bool succes or fail 706 */ 707 function io_rename($from, $to) 708 { 709 global $conf; 710 if (!@rename($from, $to)) { 711 if (@copy($from, $to)) { 712 if ($conf['fperm']) { 713 chmod($to, $conf['fperm']); 714 } 715 @unlink($from); 716 return true; 717 } 718 return false; 719 } 720 return true; 721 } 722 723 /** 724 * Runs an external command with input and output pipes. 725 * Returns the exit code from the process. 726 * 727 * @param string $cmd 728 * @param string $input input pipe 729 * @param string $output output pipe 730 * @return int exit code from process 731 * 732 * @author Tom N Harris <tnharris@whoopdedo.org> 733 */ 734 function io_exec($cmd, $input, &$output) 735 { 736 $descspec = [ 737 0 => ["pipe", "r"], 738 1 => ["pipe", "w"], 739 2 => ["pipe", "w"] 740 ]; 741 $ph = proc_open($cmd, $descspec, $pipes); 742 if (!$ph) return -1; 743 fclose($pipes[2]); // ignore stderr 744 fwrite($pipes[0], $input); 745 fclose($pipes[0]); 746 $output = stream_get_contents($pipes[1]); 747 fclose($pipes[1]); 748 return proc_close($ph); 749 } 750 751 /** 752 * Search a file for matching lines 753 * 754 * This is probably not faster than file()+preg_grep() but less 755 * memory intensive because not the whole file needs to be loaded 756 * at once. 757 * 758 * @param string $file The file to search 759 * @param string $pattern PCRE pattern 760 * @param int $max How many lines to return (0 for all) 761 * @param bool $backref When true returns array with backreferences instead of lines 762 * @return array matching lines or backref, false on error 763 * 764 * @author Andreas Gohr <andi@splitbrain.org> 765 */ 766 function io_grep($file, $pattern, $max = 0, $backref = false) 767 { 768 $fh = @fopen($file, 'r'); 769 if (!$fh) return false; 770 $matches = []; 771 772 $cnt = 0; 773 $line = ''; 774 while (!feof($fh)) { 775 $line .= fgets($fh, 4096); // read full line 776 if (!str_ends_with($line, "\n")) continue; 777 778 // check if line matches 779 if (preg_match($pattern, $line, $match)) { 780 if ($backref) { 781 $matches[] = $match; 782 } else { 783 $matches[] = $line; 784 } 785 $cnt++; 786 } 787 if ($max && $max == $cnt) break; 788 $line = ''; 789 } 790 fclose($fh); 791 return $matches; 792 } 793 794 795 /** 796 * Get size of contents of a file, for a compressed file the uncompressed size 797 * Warning: reading uncompressed size of content of bz-files requires uncompressing 798 * 799 * @param string $file filename path to file 800 * @return int size of file 801 * 802 * @author Gerrit Uitslag <klapinklapin@gmail.com> 803 */ 804 function io_getSizeFile($file) 805 { 806 if (!file_exists($file)) return 0; 807 808 if (str_ends_with($file, '.gz')) { 809 $fp = @fopen($file, "rb"); 810 if ($fp === false) return 0; 811 fseek($fp, -4, SEEK_END); 812 $buffer = fread($fp, 4); 813 fclose($fp); 814 $array = unpack("V", $buffer); 815 $uncompressedsize = end($array); 816 } elseif (str_ends_with($file, '.bz2')) { 817 if (!DOKU_HAS_BZIP) return 0; 818 $bz = bzopen($file, "r"); 819 if ($bz === false) return 0; 820 $uncompressedsize = 0; 821 while (!feof($bz)) { 822 //8192 seems to be the maximum buffersize? 823 $buffer = bzread($bz, 8192); 824 if (($buffer === false) || (bzerrno($bz) !== 0)) { 825 return 0; 826 } 827 $uncompressedsize += strlen($buffer); 828 } 829 } else { 830 $uncompressedsize = filesize($file); 831 } 832 833 return $uncompressedsize; 834 }
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