includes/svnlib.php

   1 <?php
   2 /*=====================================================================*\
   3 || ################################################################### ||
   4 || # ViewSVN [#]version[#]
   5 || # --------------------------------------------------------------- # ||
   6 || # Copyright ©2002-[#]year[#] by Iris Studios, Inc. All Rights Reserved. # ||
   7 || # This file may not be reproduced in any way without permission.  # ||
   8 || # --------------------------------------------------------------- # ||
   9 || # User License Agreement at http://www.iris-studios.com/license/  # ||
  10 || ################################################################### ||
  11 \*=====================================================================*/
  12
  13 /**
  14 * Command line interface with the SVN commands
  15 *
  16 * @package      ViewSVN
  17 */
  18
  19 /**
  20 * Interacts with the command line subsystem to
  21 * access SVN information
  22 *
  23 * @package      ViewSVN
  24 * @version      $Id$
  25 */
  26 class SVNLib
  27 {
  28         /**
  29         * Path to the SVN binary
  30         * @var  string
  31         */
  32         var $svnpath;
  33
  34         /**
  35         * Common command system
  36         * @var  object
  37         */
  38         var $common;
  39
  40         /**
  41         * Constructor: validate SVN path
  42         *
  43         * @param        string  Path to SVN binary
  44         */
  45         function SVNLib($svnpath)
  46         {
  47                 global $viewsvn;
  48
  49                 $this->svnpath = $viewsvn->shell->cmd($svnpath);
  50
  51                 $this->common =& new SVNCommon();
  52
  53                 $access = $viewsvn->shell->exec($this->svnpath . ' --version');
  54
  55                 if (!$access)
  56                 {
  57                         $viewsvn->trigger->error('svn binary could not be found');
  58                 }
  59
  60                 if (!preg_match('#^svn, version (.*?)\)$#i', trim($access[0])))
  61                 {
  62                         $viewsvn->trigger->error('svn binary does not pass test');
  63                 }
  64         }
  65
  66         /**
  67         * Prepares data for output
  68         *
  69         * @access       public
  70         *
  71         * @param        string  Standard data
  72         *
  73         * @return       string  Output-ready data
  74         */
  75         function format($string)
  76         {
  77                 // convert entities
  78                 $string = htmlspecialchars($string);
  79
  80                 // tabs to 5 spaces
  81                 $string = str_replace("\t", '     ', $string);
  82
  83                 // spaces to nbsp
  84                 $string = str_replace(' ', '&nbsp;', $string);
  85
  86                 // convert advanced diff
  87                 $string = str_replace(array('{@++}', '{@--}'), array('<span class="diff_add">', '<span class="diff_del">'), $string);
  88                 $string = str_replace(array('{/@++}', '{/@--}'), '</span>', $string);
  89
  90                 // nl2br
  91                 $string = nl2br($string);
  92
  93                 return $string;
  94         }
  95
  96         /**
  97         * Executes the SVN binary
  98         *
  99         * @access       private
 100         *
 101         * @param        string  Command
 102         *
 103         * @return       array   Output
 104         */
 105         function svn($command)
 106         {
 107                 global $viewsvn;
 108
 109                 $output = $viewsvn->shell->exec($this->svnpath . ' ' . $command . ' 2>&1');
 110                 $temp = implode("\n", $output);
 111                 if (strpos($temp, 'apr_error=') !== false OR strpos($temp, 'svn:') !== false)
 112                 {
 113                         $viewsvn->trigger->error(nl2br($temp));
 114                 }
 115                 return $output;
 116         }
 117
 118         /**
 119         * SVN Wrapper: standard command system
 120         *
 121         * @access       private
 122         *
 123         * @param        string  SVN command
 124         * @param        string  Repository
 125         * @param        string  Path
 126         * @param        integer Revision
 127         *
 128         * @return       array   Lines of output
 129         */
 130         function std($command, $repos, $path, $revision)
 131         {
 132                 global $viewsvn;
 133
 134                 $revision = $this->rev($revision);
 135                 $repospath = $viewsvn->repos->fetch_path($repos, false);
 136
 137                 return $this->svn($command . ' -r' . $revision . ' ' . $repospath . $path);
 138         }
 139
 140         /**
 141         * SVN Wrapper: blame
 142         *
 143         * @access       protected
 144         *
 145         * @param        string  Repository
 146         * @param        string  Path
 147         * @param        integer Revision
 148         *
 149         * @return       array   Lines of blame output
 150         */
 151         function blame($repos, $path, $revision)
 152         {
 153                 return $this->std('blame', $repos, $path, $revision);
 154         }
 155
 156         /**
 157         * SVN Wrapper: cat
 158         *
 159         * @access       protected
 160         *
 161         * @param        string  Repository
 162         * @param        string  Path
 163         * @param        integer Revision
 164         *
 165         * @return       array   Lines of cat output
 166         */
 167         function cat($repos, $path, $revision)
 168         {
 169                 return $this->std('cat', $repos, $path, $revision);
 170         }
 171
 172         /**
 173         * SVN Wrapper: diff
 174         *
 175         * @access       protected
 176         *
 177         * @param        string  Repository
 178         * @param        string  Path
 179         * @param        integer Lower revision
 180         * @param        integer Higher revision
 181         *
 182         * @return       array   Lines of diff output
 183         */
 184         function diff($repos, $path, $lorev, $hirev)
 185         {
 186                 global $viewsvn;
 187
 188                 $hirev = $this->rev($hirev);
 189                 $lorev = $this->rev($lorev);
 190                 if ($lorev == 'HEAD')
 191                 {
 192                         $lorev = 1;
 193                 }
 194
 195                 if (is_integer($hirev) AND is_integer($lorev))
 196                 {
 197                         if ($lorev > $hirev)
 198                         {
 199                                 $lorev = $hirev - 1;
 200                         }
 201                         if ($lorev == $hirev)
 202                         {
 203                                 $lorev = 0;
 204                         }
 205                 }
 206
 207                 $repospath = $viewsvn->repos->fetch_path($repos, false);
 208
 209                 return $this->svn('diff -r' . $lorev . ':' . $hirev . ' ' . $repospath . $path);
 210         }
 211
 212         /**
 213         * SVN Wrapper: log
 214         *
 215         * @access       protected
 216         *
 217         * @param        string  Repository
 218         * @param        string  Path
 219         * @param        integer Lower revision
 220         * @param        integer Higher revision
 221         *
 222         * @return       array   Lines of log output
 223         */
 224         function log($repos, $path, $lorev, $hirev)
 225         {
 226                 global $viewsvn;
 227
 228                 $hirev = $this->rev($hirev);
 229                 $lorev = $this->rev($hirev);
 230                 if ($lorev == 'HEAD')
 231                 {
 232                         $lorev = 0;
 233                 }
 234
 235                 if (is_integer($hirev) AND is_integer($lorev))
 236                 {
 237                         if ($lorev > $hirev)
 238                         {
 239                                 $lorev = $hirev - 1;
 240                         }
 241                         if ($lorev == $hirev)
 242                         {
 243                                 $lorev = 0;
 244                         }
 245                 }
 246
 247                 $repospath = $viewsvn->repos->fetch_path($repos, false);
 248
 249                 return $this->svn('log -r' . $hirev . ':' . $lorev . ' ' . $repospath . $path);
 250         }
 251
 252         /**
 253         * SVN Wrapper: ls (list)
 254         *
 255         * @access       protected
 256         *
 257         * @param        string  Repository
 258         * @param        string  Path
 259         * @param        integer Revision
 260         *
 261         * @return       array   Lines of list output
 262         */
 263         function ls($repos, $path, $revision)
 264         {
 265                 return $this->std('list', $repos, $path, $revision);
 266         }
 267
 268         /**
 269         * Generates a clean revision number
 270         *
 271         * @access       public
 272         *
 273         * @param        integer Revision number
 274         *
 275         * @return       mixed   Cleaned revision or HEAD
 276         */
 277         function rev($revision)
 278         {
 279                 if (($revision = intval($revision)) < 1)
 280                 {
 281                         $revision = 'HEAD';
 282                 }
 283                 return $revision;
 284         }
 285 }
 286
 287 /**
 288 * Commonly executed SVN commands that return data
 289 * used in many parts of the system
 290 *
 291 * @package      ViewSVN
 292 * @version      $Id$
 293 */
 294 class SVNCommon
 295 {
 296         /**
 297         * Registry object
 298         * @var  object
 299         */
 300         var $registry;
 301
 302         /**
 303         * List of revisions
 304         * @var  array
 305         */
 306         var $revisions;
 307
 308         /**
 309         * List of logs
 310         * @var  array
 311         */
 312         var $logs;
 313
 314         /**
 315         * Constructor: bind with registry
 316         */
 317         function SVNCommon()
 318         {
 319                 global $viewsvn;
 320
 321                 $this->registry =& $viewsvn;
 322         }
 323
 324         /**
 325         * Checks to see if the given universal path is
 326         * a directory
 327         *
 328         * @access       public
 329         *
 330         * @param        string  Universal path
 331         *
 332         * @return       bool    Directory or not
 333         */
 334         function isdir($path)
 335         {
 336                 $output = $this->registry->svn->cat($this->registry->paths->fetch_repos($path), $this->registry->paths->fetch_path($path), 'HEAD');
 337                 $output = implode("\n", $output);
 338                 if (strpos($output, 'svn:') === false)
 339                 {
 340                         return false;
 341                 }
 342                 else
 343                 {
 344                         return true;
 345                 }
 346         }
 347
 348         /**
 349         * Get a list of revisions for a path
 350         *
 351         * @access       public
 352         *
 353         * @param        string  Universal path
 354         *
 355         * @return       array   Key revisions
 356         */
 357         function fetch_revs($path)
 358         {
 359                 if (!isset($this->revisions["$path"]))
 360                 {
 361                         $log = new SVNLog($this->registry->paths->fetch_repos($path), $this->registry->paths->fetch_path($path), 0, 0);
 362
 363                         $revs = array_keys($log->fetch());
 364
 365                         $this->revisions["$path"] = array(
 366                                 'HEAD'  => $revs[0],
 367                                 'START' => $revs[ count($revs) - 1 ],
 368                                 'revs'  => $revs
 369                         );
 370                 }
 371
 372                 return $this->revisions["$path"];
 373         }
 374
 375         /**
 376         * Gets the revision that is marked as HEAD
 377         *
 378         * @access       public
 379         *
 380         * @param        string  Universal path
 381         *
 382         * @return       integer Revision
 383         */
 384         function fetch_head_rev($path)
 385         {
 386                 $revs = $this->fetch_revs($path);
 387                 return $revs['HEAD'];
 388         }
 389
 390         /**
 391         * Returns the previous revision to the one given
 392         *
 393         * @access       public
 394         *
 395         * @param        string  Universal path
 396         * @param        integer Arbitrary revision
 397         *
 398         * @return       integer Previous revision (-1 if none)
 399         */
 400         function fetch_prev_rev($path, $current)
 401         {
 402                 $revs = $this->fetch_revs($path);
 403
 404                 $index = array_search($current, $revs['revs']);
 405                 if ($current === false)
 406                 {
 407                         $message->trigger->error('revision ' . $current . ' is not in ' . $path);
 408                 }
 409
 410                 if (isset($revs['revs'][ $index + 1 ]))
 411                 {
 412                         return $revs['revs'][ $index + 1 ];
 413                 }
 414                 else
 415                 {
 416                         return -1;
 417                 }
 418         }
 419
 420         /**
 421         * Get a list of logs
 422         *
 423         * @access       public
 424         *
 425         * @param        string  Universal path
 426         *
 427         * @return       array   Log data
 428         */
 429         function fetch_logs($path)
 430         {
 431                 if (!isset($this->logs["$path"]))
 432                 {
 433                         $log = new SVNLog($this->registry->paths->fetch_repos($path), $this->registry->paths->fetch_path($path), 0, 0);
 434
 435                         $this->logs["$path"] = $log->fetch();
 436                 }
 437
 438                 return $this->logs["$path"];
 439         }
 440
 441         /**
 442         * Returns a given log entry for a path
 443         * and revision
 444         *
 445         * @access       public
 446         *
 447         * @param        string  Universal path
 448         * @param        integer Arbitrary revision
 449         *
 450         * @return       array   Log entry
 451         */
 452         function fetch_log($path, $rev)
 453         {
 454                 $logs = $this->fetch_logs($path);
 455
 456                 $rev = $this->registry->svn->rev($rev);
 457                 if ($rev == 'HEAD')
 458                 {
 459                         $rev = $this->fetch_head_rev($path);
 460                 }
 461
 462                 if (isset($logs["$rev"]))
 463                 {
 464                         return $logs["$rev"];
 465                 }
 466                 else
 467                 {
 468                         return null;
 469                 }
 470         }
 471 }
 472
 473 /**
 474 * Annotation/blame system; constructs an array
 475 * that is ready for output
 476 *
 477 * @package      ViewSVN
 478 * @version      $Id$
 479 */
 480 class SVNBlame
 481 {
 482         /**
 483         * Array of blame information
 484         * @var  array
 485         */
 486         var $blame = array();
 487
 488         /**
 489         * Raw "svn blame" output
 490         * @var  array
 491         */
 492         var $rawoutput;
 493
 494         /**
 495         * Constructor: create blame and store data
 496         *
 497         * @param        string  Repository
 498         * @param        string  Path
 499         * @param        integer Revision
 500         */
 501         function SVNBlame($repos, $path, $revision)
 502         {
 503                 global $viewsvn;
 504
 505                 $this->rawoutput = $viewsvn->svn->blame($repos, $path, $revision);
 506                 $this->process();
 507         }
 508
 509         /**
 510         * Returns blame for display
 511         *
 512         * @access       public
 513         *
 514         * @return       array   Blame data
 515         */
 516         function fetch()
 517         {
 518                 return $this->blame;
 519         }
 520
 521         /**
 522         * Parses the blame data
 523         *
 524         * @access       private
 525         */
 526         function process()
 527         {
 528                 $lineno = 1;
 529
 530                 foreach ($this->rawoutput AS $line)
 531                 {
 532                         if (preg_match('#^\s+([0-9]+)\s+([\w\.\-_]+)\s(.*)$#', $line, $matches))
 533                         {
 534                                 $this->blame[] = array(
 535                                         'rev'           => $matches[1],
 536                                         'author'        => $matches[2],
 537                                         'line'          => $matches[3],
 538                                         'lineno'        => $lineno++
 539                                 );
 540                         }
 541                         // a blank line
 542                         else if (preg_match('#^\s+([0-9]+)\s+([\w\.\-_]+)$#', $line, $matches))
 543                         {
 544                                 $this->blame[] = array(
 545                                         'rev'           => $matches[1],
 546                                         'author'        => $matches[2],
 547                                         'line'          => '',
 548                                         'lineno'        => $lineno++
 549                                 );
 550                         }
 551                 }
 552         }
 553 }
 554
 555 /**
 556 * Log management system; creates a complex list
 557 * of SVN log information
 558 *
 559 * @package      ViewSVN
 560 * @version      $Id$
 561 */
 562 class SVNLog
 563 {
 564         /**
 565         * Array of logs
 566         * @var  array
 567         */
 568         var $logs = array();
 569
 570         /**
 571         * Raw "svn log" output
 572         * @var  array
 573         */
 574         var $rawoutput;
 575
 576         /**
 577         * Constructor: create log store for the given file
 578         *
 579         * @param        string  Repository
 580         * @param        string  Path
 581         * @param        integer Lower revision
 582         * @param        integer Higher revision
 583         */
 584         function SVNLog($repos, $path, $lorev, $hirev)
 585         {
 586                 global $viewsvn;
 587
 588                 $this->rawoutput = $viewsvn->svn->log($repos, $path, $lorev, $hirev);
 589                 $this->process();
 590         }
 591
 592         /**
 593         * Returns logs for display
 594         *
 595         * @access       public
 596         *
 597         * @return       array   Log data
 598         */
 599         function fetch()
 600         {
 601                 return $this->logs;
 602         }
 603
 604         /**
 605         * Splits up the raw output into a usable log
 606         *
 607         * @access       private
 608         */
 609         function process()
 610         {
 611                 $lastrev = 0;
 612
 613                 for ($i = 1; $i <= count($this->rawoutput) - 1; $i++)
 614                 {
 615                         $line = $this->rawoutput["$i"];
 616
 617                         if (preg_match('#^r([0-9]*) \| (.*?) \| (....-..-.. ..:..:..) ([0-9\-]*) \((.*?)\) \| ([0-9]*) lines?$#', $line, $matches))
 618                         {
 619                                 if (isset($this->logs["$lastrev"]))
 620                                 {
 621                                         $this->logs["$lastrev"]['message'] = $this->strip_last_line($this->logs["$lastrev"]['message']);
 622                                 }
 623
 624                                 $this->logs["$matches[1]"] = array(
 625                                         'rev'           => $matches[1],
 626                                         'author'        => $matches[2],
 627                                         'date'          => $matches[3],
 628                                         'timezone'      => $matches[4],
 629                                         'lines'         => $matches[6],
 630                                         'message'       => ''
 631                                 );
 632
 633                                 $lastrev = $matches[1];
 634                         }
 635                         else
 636                         {
 637                                 $this->logs["$lastrev"]['message'] .= $line . "\n";
 638                         }
 639                 }
 640
 641                 if (isset($this->logs["$lastrev"]))
 642                 {
 643                         $this->logs["$lastrev"]['message'] = $this->strip_last_line($this->logs["$lastrev"]['message']);
 644                 }
 645         }
 646
 647         /**
 648         * Trims the last dash line off a message
 649         *
 650         * @access       private
 651         *
 652         * @param        string  Message with annoying-ass line
 653         *
 654         * @return       string  Clean string
 655         */
 656         function strip_last_line($string)
 657         {
 658                 return trim(preg_replace("#\n(.*?)\n$#", '', $string));
 659         }
 660 }
 661
 662 /**
 663 * Diff system; constructs a diff array that
 664 * is ready for output
 665 *
 666 * @package      ViewSVN
 667 */
 668 class SVNDiff
 669 {
 670         /**
 671         * Array of diff information
 672         * @var  array
 673         */
 674         var $diff = array();
 675
 676         /**
 677         * Raw "svn diff" output
 678         * @var  array
 679         */
 680         var $rawoutput;
 681
 682         /**
 683         * Constructor: create and store diff data
 684         *
 685         * @param        string  Repository
 686         * @param        string  Path
 687         * @param        integer Lower revision
 688         * @param        integer Higher revision
 689         */
 690         function SVNDiff($repos, $path, $lorev, $hirev)
 691         {
 692                 global $viewsvn;
 693
 694                 $this->rawoutput = $viewsvn->svn->diff($repos, $path, $lorev, $hirev);
 695                 $this->process();
 696         }
 697
 698         /**
 699         * Returns diffs for display
 700         *
 701         * @access       public
 702         *
 703         * @return       array   Diff data
 704         */
 705         function fetch()
 706         {
 707                 return $this->diff;
 708         }
 709
 710         /**
 711         * Processes and prepares diff data
 712         *
 713         * @access       private
 714         */
 715         function process()
 716         {
 717                 $chunk = 0;
 718                 $indexcounter = null;
 719
 720                 $lastact = '';
 721                 $lastcontent = '';
 722
 723                 foreach ($this->rawoutput AS $line)
 724                 {
 725                         if (preg_match('#^@@ \-([0-9]*),([0-9]*) \+([0-9]*),([0-9]*) @@$#', $line, $bits))
 726                         {
 727                                 $lastact = '';
 728                                 $lastcontent = '';
 729
 730                                 $this->diff["$index"][ ++$chunk ]['hunk'] = array('old' => array('line' => $bits[1], 'count' => $bits[2]), 'new' => array('line' => $bits[3], 'count' => $bits[4]));
 731                                 $lines['old'] = $this->diff["$index"]["$chunk"]['hunk']['old']['line'] - 1;
 732                                 $lines['new'] = $this->diff["$index"]["$chunk"]['hunk']['new']['line'] - 1;
 733                                 continue;
 734                         }
 735
 736                         if ($indexcounter <= 5 AND $indexcounter !== null)
 737                         {
 738                                 $indexcounter++;
 739                                 continue;
 740                         }
 741                         else if ($indexcounter == 5)
 742                         {
 743                                 $indexcounter = null;
 744                                 continue;
 745                         }
 746
 747                         if (preg_match('#^([\+\- ])(.*)#', $line, $matches))
 748                         {
 749                                 $act = $matches[1];
 750                                 $content = $matches[2];
 751
 752                                 if ($act == ' ')
 753                                 {
 754                                         $this->diff["$index"]["$chunk"][] = array(
 755                                                 'line'          => $content,
 756                                                 'act'           => '',
 757                                                 'oldlineno'     => ++$lines['old'],
 758                                                 'newlineno'     => ++$lines['new']
 759                                         );
 760                                 }
 761                                 else if ($act == '+')
 762                                 {
 763                                         // potential line delta
 764                                         if ($lastact == '-')
 765                                         {
 766                                                 if ($delta = @$this->fetch_diff_extent($lastcontent, $content))
 767                                                 {
 768                                                         // create two sets of ends for the two contents
 769                                                         $delta['endo'] = strlen($lastcontent) - $delta['end'];
 770                                                         $delta['endn'] = strlen($content) - $delta['end'];
 771
 772                                                         $diffo = $delta['endo'] - $delta['start'];
 773                                                         $diffn = $delta['endn'] - $delta['start'];
 774
 775                                                         if (strlen($lastcontent) > $delta['endo'] - $diffo)
 776                                                         {
 777                                                                 $removed = substr($lastcontent, $delta['start'], $diffo);
 778                                                                 $this->diff["$index"]["$chunk"][ count($this->diff["$index"]["$chunk"]) - 2 ]['line'] = substr_replace($lastcontent, '{@--}' . $removed . '{/@--}', $delta['start'], $diffo);
 779                                                         }
 780
 781                                                         if (strlen($content) > $delta['endn'] - $diffn)
 782                                                         {
 783                                                                 $added = substr($content, $delta['start'], $diffn);
 784                                                                 $content = substr_replace($content, '{@++}' . $added . '{/@++}', $delta['start'], $diffn);
 785                                                         }
 786                                                 }
 787                                         }
 788
 789                                         $this->diff["$index"]["$chunk"][] = array(
 790                                                 'line'          => $content,
 791                                                 'act'           => '+',
 792                                                 'oldlineno'     => '',
 793                                                 'newlineno'     => ++$lines['new']
 794                                         );
 795                                 }
 796                                 else if ($act == '-')
 797                                 {
 798                                         $lastcontent = $content;
 799
 800                                         $this->diff["$index"]["$chunk"][] = array(
 801                                                 'line'          => $content,
 802                                                 'act'           => '-',
 803                                                 'oldlineno'     => ++$lines['old'],
 804                                                 'newlineno'     => ''
 805                                         );
 806                                 }
 807
 808                                 $lastact = $act;
 809                         }
 810                         // whitespace lines
 811                         else
 812                         {
 813                                 if (preg_match('#^Index: (.*?)$#', $line, $matches))
 814                                 {
 815                                         $index = $matches[1];
 816                                         $indexcounter = 1;
 817                                         $chunk = 0;
 818                                         continue;
 819                                 }
 820
 821                                 $lastact = '';
 822
 823                                 $this->diff["$index"]["$chunk"][] = array(
 824                                         'line'          => '',
 825                                         'act'           => '',
 826                                         'oldlineno'     => ++$lines['old'],
 827                                         'newlineno'     => ++$lines['new']
 828                                 );
 829                         }
 830                 }
 831         }
 832
 833         /**
 834         * Returns the amount of change that occured
 835         * between two lines
 836         *
 837         * @access       private
 838         *
 839         * @param        string  Old line
 840         * @param        string  New line
 841         *
 842         * @return       array   Difference of positions
 843         */
 844         function fetch_diff_extent($old, $new)
 845         {
 846                 $start = 0;
 847                 $min = min(strlen($old), strlen($new));
 848
 849                 for ($start = 0; $start < $min; $start++)
 850                 {
 851                         if ($old{"$start"} != $new{"$start"})
 852                         {
 853                                 break;
 854                         }
 855                 }
 856
 857                 $max = max(strlen($old), strlen($new));
 858
 859                 for ($end = 0; $end < $min; $end++)
 860                 {
 861                         $oldpos = strlen($old) - $end;
 862                         $newpos = strlen($new) - $end;
 863
 864                         if ($old{"$oldpos"} != $new{"$newpos"})
 865                         {
 866                                 break;
 867                         }
 868                 }
 869
 870                 $end--;
 871
 872                 if ($start == 0 AND $end == $max)
 873                 {
 874                         return false;
 875                 }
 876
 877                 return array('start' => $start, 'end' => $end);
 878         }
 879 }
 880
 881 /*=====================================================================*\
 882 || ###################################################################
 883 || # $HeadURL$
 884 || # $Id$
 885 || ###################################################################
 886 \*=====================================================================*/
 887 ?>