git.oblomov.eu Git - ikiwiki/blob - IkiWiki/Render.pm

   1 #!/usr/bin/perl
   2
   3 package IkiWiki;
   4
   5 use warnings;
   6 use strict;
   7 use IkiWiki;
   8 use Encode;
   9
  10 my (%backlinks, %rendered);
  11 our %brokenlinks;
  12 my $links_calculated=0;
  13
  14 sub calculate_links () {
  15         return if $links_calculated;
  16         %backlinks=%brokenlinks=();
  17         foreach my $page (keys %links) {
  18                 foreach my $link (@{$links{$page}}) {
  19                         my $bestlink=bestlink($page, $link);
  20                         if (length $bestlink) {
  21                                 $backlinks{$bestlink}{$page}=1
  22                                         if $bestlink ne $page;
  23                         }
  24                         else {
  25                                 push @{$brokenlinks{$link}}, $page;
  26                         }
  27                 }
  28         }
  29         $links_calculated=1;
  30 }
  31
  32 sub backlink_pages ($) {
  33         my $page=shift;
  34
  35         calculate_links();
  36
  37         return keys %{$backlinks{$page}};
  38 }
  39
  40 sub backlinks ($) {
  41         my $page=shift;
  42
  43         my @links;
  44         foreach my $p (backlink_pages($page)) {
  45                 my $href=urlto($p, $page);
  46
  47                 # Trim common dir prefixes from both pages.
  48                 my $p_trimmed=$p;
  49                 my $page_trimmed=$page;
  50                 my $dir;
  51                 1 while (($dir)=$page_trimmed=~m!^([^/]+/)!) &&
  52                         defined $dir &&
  53                         $p_trimmed=~s/^\Q$dir\E// &&
  54                         $page_trimmed=~s/^\Q$dir\E//;
  55
  56                 push @links, { url => $href, page => pagetitle($p_trimmed) };
  57         }
  58         return @links;
  59 }
  60
  61 sub genpage ($$) {
  62         my $page=shift;
  63         my $content=shift;
  64
  65         run_hooks(postscan => sub {
  66                 shift->(page => $page, content => $content);
  67         });
  68
  69         my $templatefile;
  70         run_hooks(templatefile => sub {
  71                 return if defined $templatefile;
  72                 my $file=shift->(page => $page);
  73                 if (defined $file && defined template_file($file)) {
  74                         $templatefile=$file;
  75                 }
  76         });
  77         my $template;
  78         if (defined $templatefile) {
  79                 $template=template_depends($templatefile, $page,
  80                         blind_cache => 1);
  81         }
  82         else {
  83                 # no explicit depends as special case
  84                 $template=template('page.tmpl',
  85                         blind_cache => 1);
  86         }
  87         my $actions=0;
  88
  89         if (length $config{cgiurl}) {
  90                 if (IkiWiki->can("cgi_editpage")) {
  91                         $template->param(editurl => cgiurl(do => "edit", page => $page));
  92                         $actions++;
  93                 }
  94                 if (exists $hooks{auth}) {
  95                         $template->param(prefsurl => cgiurl(do => "prefs"));
  96                         $actions++;
  97                 }
  98         }
  99
 100         if (defined $config{historyurl} && length $config{historyurl}) {
 101                 my $u=$config{historyurl};
 102                 $u=~s/\[\[file\]\]/$pagesources{$page}/g;
 103                 $template->param(historyurl => $u);
 104                 $actions++;
 105         }
 106         if ($config{discussion}) {
 107                 if ($page !~ /.*\/\Q$config{discussionpage}\E$/i &&
 108                    (length $config{cgiurl} ||
 109                     exists $links{$page."/".$config{discussionpage}})) {
 110                         $template->param(discussionlink => htmllink($page, $page, $config{discussionpage}, noimageinline => 1, forcesubpage => 1));
 111                         $actions++;
 112                 }
 113         }
 114
 115         my @actions;
 116         run_hooks(pageactions => sub {
 117                 push @actions, map { { action => $_ } }
 118                         grep { defined } shift->(page => $page);
 119         });
 120         $template->param(actions => \@actions);
 121
 122         if ($actions || @actions) {
 123                 $template->param(have_actions => 1);
 124         }
 125
 126         my @backlinks=sort { $a->{page} cmp $b->{page} } backlinks($page);
 127         my ($backlinks, $more_backlinks);
 128         if (@backlinks <= $config{numbacklinks} || ! $config{numbacklinks}) {
 129                 $backlinks=\@backlinks;
 130                 $more_backlinks=[];
 131         }
 132         else {
 133                 $backlinks=[@backlinks[0..$config{numbacklinks}-1]];
 134                 $more_backlinks=[@backlinks[$config{numbacklinks}..$#backlinks]];
 135         }
 136
 137         $template->param(
 138                 title => $page eq 'index'
 139                         ? $config{wikiname}
 140                         : pagetitle(basename($page)),
 141                 wikiname => $config{wikiname},
 142                 content => $content,
 143                 backlinks => $backlinks,
 144                 more_backlinks => $more_backlinks,
 145                 mtime => displaytime($pagemtime{$page}),
 146                 ctime => displaytime($pagectime{$page}, undef, 1),
 147                 baseurl => baseurl($page),
 148                 html5 => $config{html5},
 149         );
 150
 151         run_hooks(pagetemplate => sub {
 152                 shift->(page => $page, destpage => $page, template => $template);
 153         });
 154
 155         $content=$template->output;
 156
 157         run_hooks(format => sub {
 158                 $content=shift->(
 159                         page => $page,
 160                         content => $content,
 161                 );
 162         });
 163
 164         return $content;
 165 }
 166
 167 sub scan ($) {
 168         my $file=shift;
 169
 170         debug(sprintf(gettext("scanning %s"), $file));
 171
 172         my $type=pagetype($file);
 173         if (defined $type) {
 174                 my $srcfile=srcfile($file);
 175                 my $content=readfile($srcfile);
 176                 my $page=pagename($file);
 177                 will_render($page, htmlpage($page), 1);
 178
 179                 if ($config{discussion}) {
 180                         # Discussion links are a special case since they're
 181                         # not in the text of the page, but on its template.
 182                         $links{$page}=[ $page."/".lc($config{discussionpage}) ];
 183                 }
 184                 else {
 185                         $links{$page}=[];
 186                 }
 187                 delete $typedlinks{$page};
 188
 189                 run_hooks(scan => sub {
 190                         shift->(
 191                                 page => $page,
 192                                 content => $content,
 193                         );
 194                 });
 195
 196                 # Preprocess in scan-only mode.
 197                 preprocess($page, $page, $content, 1);
 198         }
 199         else {
 200                 will_render($file, $file, 1);
 201         }
 202 }
 203
 204 sub fast_file_copy (@) {
 205         my $srcfile=shift;
 206         my $destfile=shift;
 207         my $srcfd=shift;
 208         my $destfd=shift;
 209         my $cleanup=shift;
 210
 211         my $blksize = 16384;
 212         my ($len, $buf, $written);
 213         while ($len = sysread $srcfd, $buf, $blksize) {
 214                 if (! defined $len) {
 215                         next if $! =~ /^Interrupted/;
 216                         error("failed to read $srcfile: $!", $cleanup);
 217                 }
 218                 my $offset = 0;
 219                 while ($len) {
 220                         defined($written = syswrite $destfd, $buf, $len, $offset)
 221                                 or error("failed to write $destfile: $!", $cleanup);
 222                         $len -= $written;
 223                         $offset += $written;
 224                 }
 225         }
 226 }
 227
 228 sub render ($$) {
 229         my $file=shift;
 230         return if $rendered{$file};
 231         debug(shift);
 232         $rendered{$file}=1;
 233
 234         my $type=pagetype($file);
 235         my $srcfile=srcfile($file);
 236         if (defined $type) {
 237                 my $page=pagename($file);
 238                 delete $depends{$page};
 239                 delete $depends_simple{$page};
 240                 will_render($page, htmlpage($page), 1);
 241                 return if $type=~/^_/;
 242
 243                 my $content=htmlize($page, $page, $type,
 244                         linkify($page, $page,
 245                         preprocess($page, $page,
 246                         filter($page, $page,
 247                         readfile($srcfile)))));
 248
 249                 my $output=htmlpage($page);
 250                 writefile($output, $config{destdir}, genpage($page, $content));
 251         }
 252         else {
 253                 delete $depends{$file};
 254                 delete $depends_simple{$file};
 255                 will_render($file, $file, 1);
 256
 257                 if ($config{hardlink}) {
 258                         # only hardlink if owned by same user
 259                         my @stat=stat($srcfile);
 260                         if ($stat[4] == $>) {
 261                                 prep_writefile($file, $config{destdir});
 262                                 unlink($config{destdir}."/".$file);
 263                                 if (link($srcfile, $config{destdir}."/".$file)) {
 264                                         return;
 265                                 }
 266                         }
 267                         # if hardlink fails, fall back to copying
 268                 }
 269
 270                 my $srcfd=readfile($srcfile, 1, 1);
 271                 writefile($file, $config{destdir}, undef, 1, sub {
 272                         fast_file_copy($srcfile, $file, $srcfd, @_);
 273                 });
 274         }
 275 }
 276
 277 sub prune ($) {
 278         my $file=shift;
 279
 280         unlink($file);
 281         my $dir=dirname($file);
 282         while (rmdir($dir)) {
 283                 $dir=dirname($dir);
 284         }
 285 }
 286
 287 sub srcdir_check () {
 288         # security check, avoid following symlinks in the srcdir path by default
 289         my $test=$config{srcdir};
 290         while (length $test) {
 291                 if (-l $test && ! $config{allow_symlinks_before_srcdir}) {
 292                         error(sprintf(gettext("symlink found in srcdir path (%s) -- set allow_symlinks_before_srcdir to allow this"), $test));
 293                 }
 294                 unless ($test=~s/\/+$//) {
 295                         $test=dirname($test);
 296                 }
 297         }
 298
 299 }
 300
 301 sub find_src_files () {
 302         my @files;
 303         my %pages;
 304         eval q{use File::Find};
 305         error($@) if $@;
 306
 307         my ($page, $dir, $underlay);
 308         my $helper=sub {
 309                 my $file=decode_utf8($_);
 310
 311                 return if -l $file || -d _;
 312                 $file=~s/^\Q$dir\E\/?//;
 313                 return if ! length $file;
 314                 $page = pagename($file);
 315                 if (! exists $pagesources{$page} &&
 316                     file_pruned($file)) {
 317                         $File::Find::prune=1;
 318                         return;
 319                 }
 320
 321                 my ($f) = $file =~ /$config{wiki_file_regexp}/; # untaint
 322                 if (! defined $f) {
 323                         warn(sprintf(gettext("skipping bad filename %s"), $file)."\n");
 324                 }
 325
 326                 if ($underlay) {
 327                         # avoid underlaydir override attacks; see security.mdwn
 328                         if (! -l "$config{srcdir}/$f" && ! -e _) {
 329                                 if (! $pages{$page}) {
 330                                         push @files, $f;
 331                                         $pages{$page}=1;
 332                                 }
 333                         }
 334                 }
 335                 else {
 336                         push @files, $f;
 337                         if ($pages{$page}) {
 338                                 debug(sprintf(gettext("%s has multiple possible source pages"), $page));
 339                         }
 340                         $pages{$page}=1;
 341                 }
 342         };
 343
 344         find({
 345                 no_chdir => 1,
 346                 wanted => $helper,
 347         }, $dir=$config{srcdir});
 348         $underlay=1;
 349         foreach (@{$config{underlaydirs}}, $config{underlaydir}) {
 350                 find({
 351                         no_chdir => 1,
 352                         wanted => $helper,
 353                 }, $dir=$_);
 354         };
 355         return \@files, \%pages;
 356 }
 357
 358 sub find_new_files ($) {
 359         my $files=shift;
 360         my @new;
 361         my @internal_new;
 362
 363         my $times_noted;
 364
 365         foreach my $file (@$files) {
 366                 my $page=pagename($file);
 367                 if (exists $pagesources{$page} && $pagesources{$page} ne $file) {
 368                         # the page has changed its type
 369                         $forcerebuild{$page}=1;
 370                 }
 371                 $pagesources{$page}=$file;
 372                 if (! $pagemtime{$page}) {
 373                         if (isinternal($page)) {
 374                                 push @internal_new, $file;
 375                         }
 376                         elsif ($config{rcs}) {
 377                                 push @new, $file;
 378                                 if ($config{gettime} && -e "$config{srcdir}/$file") {
 379                                         if (! $times_noted) {
 380                                                 debug(sprintf(gettext("querying %s for file creation and modification times.."), $config{rcs}));
 381                                                 $times_noted=1;
 382                                         }
 383
 384                                         eval {
 385                                                 my $ctime=rcs_getctime("$config{srcdir}/$file");
 386                                                 if ($ctime > 0) {
 387                                                         $pagectime{$page}=$ctime;
 388                                                 }
 389                                         };
 390                                         if ($@) {
 391                                                 print STDERR $@;
 392                                         }
 393                                         my $mtime;
 394                                         eval {
 395                                                 $mtime=rcs_getmtime("$config{srcdir}/$file");
 396                                         };
 397                                         if ($@) {
 398                                                 print STDERR $@;
 399                                         }
 400                                         elsif ($mtime > 0) {
 401                                                 utime($mtime, $mtime, "$config{srcdir}/$file");
 402                                         }
 403                                 }
 404                         }
 405                         $pagecase{lc $page}=$page;
 406                         if (! exists $pagectime{$page}) {
 407                                 $pagectime{$page}=(srcfile_stat($file))[10];
 408                         }
 409                 }
 410         }
 411
 412         return \@new, \@internal_new;
 413 }
 414
 415 sub find_del_files ($) {
 416         my $pages=shift;
 417         my @del;
 418         my @internal_del;
 419
 420         foreach my $page (keys %pagesources) {
 421                 if (! $pages->{$page}) {
 422                         if (isinternal($page)) {
 423                                 push @internal_del, $pagesources{$page};
 424                         }
 425                         else {
 426                                 push @del, $pagesources{$page};
 427                         }
 428                         $links{$page}=[];
 429                         delete $typedlinks{$page};
 430                         $renderedfiles{$page}=[];
 431                         $pagemtime{$page}=0;
 432                 }
 433         }
 434
 435         return \@del, \@internal_del;
 436 }
 437
 438 sub remove_del (@) {
 439         foreach my $file (@_) {
 440                 my $page=pagename($file);
 441                 if (! isinternal($page)) {
 442                         debug(sprintf(gettext("removing obsolete %s"), $page));
 443                 }
 444
 445                 foreach my $old (@{$oldrenderedfiles{$page}}) {
 446                         prune($config{destdir}."/".$old);
 447                 }
 448
 449                 foreach my $source (keys %destsources) {
 450                         if ($destsources{$source} eq $page) {
 451                                 delete $destsources{$source};
 452                         }
 453                 }
 454
 455                 delete $pagecase{lc $page};
 456                 delete $pagesources{$page};
 457         }
 458 }
 459
 460 sub find_changed ($) {
 461         my $files=shift;
 462         my @changed;
 463         my @internal_changed;
 464         foreach my $file (@$files) {
 465                 my $page=pagename($file);
 466                 my ($srcfile, @stat)=srcfile_stat($file);
 467                 if (! exists $pagemtime{$page} ||
 468                     $stat[9] > $pagemtime{$page} ||
 469                     $forcerebuild{$page}) {
 470                         $pagemtime{$page}=$stat[9];
 471
 472                         if (isinternal($page)) {
 473                                 # Preprocess internal page in scan-only mode.
 474                                 preprocess($page, $page, readfile($srcfile), 1);
 475                                 push @internal_changed, $file;
 476                         }
 477                         else {
 478                                 push @changed, $file;
 479                         }
 480                 }
 481         }
 482         return \@changed, \@internal_changed;
 483 }
 484
 485 sub calculate_old_links ($$) {
 486         my ($changed, $del)=@_;
 487         my %oldlink_targets;
 488         foreach my $file (@$changed, @$del) {
 489                 my $page=pagename($file);
 490                 if (exists $oldlinks{$page}) {
 491                         foreach my $l (@{$oldlinks{$page}}) {
 492                                 $oldlink_targets{$page}{$l}=bestlink($page, $l);
 493                         }
 494                 }
 495         }
 496         return \%oldlink_targets;
 497 }
 498
 499 sub derender_internal ($) {
 500         my $file=shift;
 501         my $page=pagename($file);
 502         delete $depends{$page};
 503         delete $depends_simple{$page};
 504         foreach my $old (@{$renderedfiles{$page}}) {
 505                 delete $destsources{$old};
 506         }
 507         $renderedfiles{$page}=[];
 508 }
 509
 510 sub render_linkers ($) {
 511         my $f=shift;
 512         my $p=pagename($f);
 513         foreach my $page (keys %{$backlinks{$p}}) {
 514                 my $file=$pagesources{$page};
 515                 render($file, sprintf(gettext("building %s, which links to %s"), $file, $p));
 516         }
 517 }
 518
 519 sub remove_unrendered () {
 520         foreach my $src (keys %rendered) {
 521                 my $page=pagename($src);
 522                 foreach my $file (@{$oldrenderedfiles{$page}}) {
 523                         if (! grep { $_ eq $file } @{$renderedfiles{$page}}) {
 524                                 debug(sprintf(gettext("removing %s, no longer built by %s"), $file, $page));
 525                                 prune($config{destdir}."/".$file);
 526                         }
 527                 }
 528         }
 529 }
 530
 531 sub link_types_changed ($$) {
 532         # each is of the form { type => { link => 1 } }
 533         my $new = shift;
 534         my $old = shift;
 535
 536         return 0 if !defined $new && !defined $old;
 537         return 1 if (!defined $new && %$old) || (!defined $old && %$new);
 538
 539         while (my ($type, $links) = each %$new) {
 540                 foreach my $link (keys %$links) {
 541                         return 1 unless exists $old->{$type}{$link};
 542                 }
 543         }
 544
 545         while (my ($type, $links) = each %$old) {
 546                 foreach my $link (keys %$links) {
 547                         return 1 unless exists $new->{$type}{$link};
 548                 }
 549         }
 550
 551         return 0;
 552 }
 553
 554 sub calculate_changed_links ($$$) {
 555         my ($changed, $del, $oldlink_targets)=@_;
 556
 557         my (%backlinkchanged, %linkchangers);
 558
 559         foreach my $file (@$changed, @$del) {
 560                 my $page=pagename($file);
 561
 562                 if (exists $links{$page}) {
 563                         foreach my $l (@{$links{$page}}) {
 564                                 my $target=bestlink($page, $l);
 565                                 if (! exists $oldlink_targets->{$page}{$l} ||
 566                                     $target ne $oldlink_targets->{$page}{$l}) {
 567                                         $backlinkchanged{$target}=1;
 568                                         $linkchangers{lc($page)}=1;
 569                                 }
 570                                 delete $oldlink_targets->{$page}{$l};
 571                         }
 572                 }
 573                 if (exists $oldlink_targets->{$page} &&
 574                     %{$oldlink_targets->{$page}}) {
 575                         foreach my $target (values %{$oldlink_targets->{$page}}) {
 576                                 $backlinkchanged{$target}=1;
 577                         }
 578                         $linkchangers{lc($page)}=1;
 579                 }
 580
 581                 # we currently assume that changing the type of a link doesn't
 582                 # change backlinks
 583                 if (!exists $linkchangers{lc($page)}) {
 584                         if (link_types_changed($typedlinks{$page}, $oldtypedlinks{$page})) {
 585                                 $linkchangers{lc($page)}=1;
 586                         }
 587                 }
 588         }
 589
 590         return \%backlinkchanged, \%linkchangers;
 591 }
 592
 593 sub render_dependent ($$$$$$$) {
 594         my ($files, $new, $internal_new, $del, $internal_del,
 595                 $internal_changed, $linkchangers)=@_;
 596
 597         my @changed=(keys %rendered, @$del);
 598         my @exists_changed=(@$new, @$del);
 599
 600         my %lc_changed = map { lc(pagename($_)) => 1 } @changed;
 601         my %lc_exists_changed = map { lc(pagename($_)) => 1 } @exists_changed;
 602
 603         foreach my $p ("templates/page.tmpl", keys %{$depends_simple{""}}) {
 604                 if ($rendered{$p} || grep { $_ eq $p } @$del) {
 605                         foreach my $f (@$files) {
 606                                 next if $rendered{$f};
 607                                 render($f, sprintf(gettext("building %s, which depends on %s"), $f, $p));
 608                         }
 609                         return 0;
 610                 }
 611         }
 612
 613         foreach my $f (@$files) {
 614                 next if $rendered{$f};
 615                 my $p=pagename($f);
 616                 my $reason = undef;
 617
 618                 if (exists $depends_simple{$p} && ! defined $reason) {
 619                         foreach my $d (keys %{$depends_simple{$p}}) {
 620                                 if (($depends_simple{$p}{$d} & $IkiWiki::DEPEND_CONTENT &&
 621                                      $lc_changed{$d})
 622                                     ||
 623                                     ($depends_simple{$p}{$d} & $IkiWiki::DEPEND_PRESENCE &&
 624                                      $lc_exists_changed{$d})
 625                                     ||
 626                                     ($depends_simple{$p}{$d} & $IkiWiki::DEPEND_LINKS &&
 627                                      $linkchangers->{$d})
 628                                 ) {
 629                                         $reason = $d;
 630                                         last;
 631                                 }
 632                         }
 633                 }
 634
 635                 if (exists $depends{$p} && ! defined $reason) {
 636                         foreach my $dep (keys %{$depends{$p}}) {
 637                                 my $sub=pagespec_translate($dep);
 638                                 next unless defined $sub;
 639
 640                                 # only consider internal files
 641                                 # if the page explicitly depends
 642                                 # on such files
 643                                 my $internal_dep=$dep =~ /internal\(/;
 644
 645                                 my $in=sub {
 646                                         my $list=shift;
 647                                         my $type=shift;
 648                                         foreach my $file (@$list) {
 649                                                 next if $file eq $f;
 650                                                 my $page=pagename($file);
 651                                                 if ($sub->($page, location => $p)) {
 652                                                         if ($type == $IkiWiki::DEPEND_LINKS) {
 653                                                                 next unless $linkchangers->{lc($page)};
 654                                                         }
 655                                                         $reason=$page;
 656                                                         return 1;
 657                                                 }
 658                                         }
 659                                         return undef;
 660                                 };
 661
 662                                 if ($depends{$p}{$dep} & $IkiWiki::DEPEND_CONTENT) {
 663                                         last if $in->(\@changed, $IkiWiki::DEPEND_CONTENT);
 664                                         last if $internal_dep && (
 665                                                 $in->($internal_new, $IkiWiki::DEPEND_CONTENT) ||
 666                                                 $in->($internal_del, $IkiWiki::DEPEND_CONTENT) ||
 667                                                 $in->($internal_changed, $IkiWiki::DEPEND_CONTENT)
 668                                         );
 669                                 }
 670                                 if ($depends{$p}{$dep} & $IkiWiki::DEPEND_PRESENCE) {
 671                                         last if $in->(\@exists_changed, $IkiWiki::DEPEND_PRESENCE);
 672                                         last if $internal_dep && (
 673                                                 $in->($internal_new, $IkiWiki::DEPEND_PRESENCE) ||
 674                                                 $in->($internal_del, $IkiWiki::DEPEND_PRESENCE)
 675                                         );
 676                                 }
 677                                 if ($depends{$p}{$dep} & $IkiWiki::DEPEND_LINKS) {
 678                                         last if $in->(\@changed, $IkiWiki::DEPEND_LINKS);
 679                                         last if $internal_dep && (
 680                                                 $in->($internal_new, $IkiWiki::DEPEND_LINKS) ||
 681                                                 $in->($internal_del, $IkiWiki::DEPEND_LINKS) ||
 682                                                 $in->($internal_changed, $IkiWiki::DEPEND_LINKS)
 683                                         );
 684                                 }
 685                         }
 686                 }
 687
 688                 if (defined $reason) {
 689                         render($f, sprintf(gettext("building %s, which depends on %s"), $f, $reason));
 690                         return 1;
 691                 }
 692         }
 693
 694         return 0;
 695 }
 696
 697 sub render_backlinks ($) {
 698         my $backlinkchanged=shift;
 699         foreach my $link (keys %$backlinkchanged) {
 700                 my $linkfile=$pagesources{$link};
 701                 if (defined $linkfile) {
 702                         render($linkfile, sprintf(gettext("building %s, to update its backlinks"), $linkfile));
 703                 }
 704         }
 705 }
 706
 707 sub gen_autofile ($$$) {
 708         my $autofile=shift;
 709         my $pages=shift;
 710         my $del=shift;
 711
 712         if (file_pruned($autofile)) {
 713                 return;
 714         }
 715
 716         my ($file)="$config{srcdir}/$autofile" =~ /$config{wiki_file_regexp}/; # untaint
 717         if (! defined $file) {
 718                 return;
 719         }
 720
 721         # Remember autofiles that were tried, and never try them again later.
 722         if (exists $wikistate{$autofiles{$autofile}{plugin}}{autofile}{$autofile}) {
 723                 return;
 724         }
 725         $wikistate{$autofiles{$autofile}{plugin}}{autofile}{$autofile}=1;
 726
 727         if (srcfile($autofile, 1) || file_pruned($autofile)) {
 728                 return;
 729         }
 730
 731         if (-l $file || -d _ || -e _) {
 732                 return;
 733         }
 734
 735         my $page = pagename($file);
 736         if ($pages->{$page}) {
 737                 return;
 738         }
 739
 740         if (grep { $_ eq $autofile } @$del) {
 741                 return;
 742         }
 743
 744         $autofiles{$autofile}{generator}->();
 745         $pages->{$page}=1;
 746         return 1;
 747 }
 748
 749
 750 sub refresh () {
 751         srcdir_check();
 752         run_hooks(refresh => sub { shift->() });
 753         my ($files, $pages)=find_src_files();
 754         my ($new, $internal_new)=find_new_files($files);
 755         my ($del, $internal_del)=find_del_files($pages);
 756         my ($changed, $internal_changed)=find_changed($files);
 757         run_hooks(needsbuild => sub { shift->($changed) });
 758         my $oldlink_targets=calculate_old_links($changed, $del);
 759
 760         foreach my $file (@$changed) {
 761                 scan($file);
 762         }
 763
 764         foreach my $autofile (keys %autofiles) {
 765                 if (gen_autofile($autofile, $pages, $del)) {
 766                         push @{$files}, $autofile;
 767                         push @{$new}, $autofile if find_new_files([$autofile]);
 768                         push @{$changed}, $autofile if find_changed([$autofile]);
 769
 770                         scan($autofile);
 771                 }
 772         }
 773
 774         calculate_links();
 775
 776         remove_del(@$del, @$internal_del);
 777
 778         foreach my $file (@$changed) {
 779                 render($file, sprintf(gettext("building %s"), $file));
 780         }
 781         foreach my $file (@$internal_new, @$internal_del, @$internal_changed) {
 782                 derender_internal($file);
 783         }
 784
 785         my ($backlinkchanged, $linkchangers)=calculate_changed_links($changed,
 786                 $del, $oldlink_targets);
 787
 788         foreach my $file (@$new, @$del) {
 789                 render_linkers($file);
 790         }
 791
 792         if (@$changed || @$internal_changed ||
 793             @$del || @$internal_del || @$internal_new) {
 794                 1 while render_dependent($files, $new, $internal_new,
 795                         $del, $internal_del, $internal_changed,
 796                         $linkchangers);
 797         }
 798
 799         render_backlinks($backlinkchanged);
 800         remove_unrendered();
 801
 802         if (@$del) {
 803                 run_hooks(delete => sub { shift->(@$del) });
 804         }
 805         if (%rendered) {
 806                 run_hooks(change => sub { shift->(keys %rendered) });
 807         }
 808 }
 809
 810 sub clean_rendered {
 811         lockwiki();
 812         loadindex();
 813         remove_unrendered();
 814         foreach my $page (keys %oldrenderedfiles) {
 815                 foreach my $file (@{$oldrenderedfiles{$page}}) {
 816                         prune($config{destdir}."/".$file);
 817                 }
 818         }
 819 }
 820
 821 sub commandline_render () {
 822         lockwiki();
 823         loadindex();
 824         unlockwiki();
 825
 826         my $srcfile=possibly_foolish_untaint($config{render});
 827         my $file=$srcfile;
 828         $file=~s/\Q$config{srcdir}\E\/?//;
 829
 830         my $type=pagetype($file);
 831         die sprintf(gettext("ikiwiki: cannot build %s"), $srcfile)."\n" unless defined $type;
 832         my $content=readfile($srcfile);
 833         my $page=pagename($file);
 834         $pagesources{$page}=$file;
 835         $content=filter($page, $page, $content);
 836         $content=preprocess($page, $page, $content);
 837         $content=linkify($page, $page, $content);
 838         $content=htmlize($page, $page, $type, $content);
 839         $pagemtime{$page}=(stat($srcfile))[9];
 840         $pagectime{$page}=$pagemtime{$page} if ! exists $pagectime{$page};
 841
 842         print genpage($page, $content);
 843         exit 0;
 844 }
 845
 846 1