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