535 lines
12 KiB
Perl
535 lines
12 KiB
Perl
#!/usr/bin/perl
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package IkiWiki;
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use warnings;
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use strict;
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use IkiWiki;
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use Encode;
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my %backlinks;
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my $backlinks_calculated=0;
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sub calculate_backlinks () { #{{{
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return if $backlinks_calculated;
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%backlinks=();
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foreach my $page (keys %links) {
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foreach my $link (@{$links{$page}}) {
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my $bestlink=bestlink($page, $link);
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if (length $bestlink && $bestlink ne $page) {
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$backlinks{$bestlink}{$page}=1;
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}
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}
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}
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$backlinks_calculated=1;
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} #}}}
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sub backlinks ($) { #{{{
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my $page=shift;
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calculate_backlinks();
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my @links;
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foreach my $p (keys %{$backlinks{$page}}) {
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my $href=urlto($p, $page);
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# Trim common dir prefixes from both pages.
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my $p_trimmed=$p;
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my $page_trimmed=$page;
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my $dir;
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1 while (($dir)=$page_trimmed=~m!^([^/]+/)!) &&
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defined $dir &&
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$p_trimmed=~s/^\Q$dir\E// &&
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$page_trimmed=~s/^\Q$dir\E//;
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push @links, { url => $href, page => pagetitle($p_trimmed) };
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}
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return @links;
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} #}}}
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sub parentlinks ($) { #{{{
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my $page=shift;
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my @ret;
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my $pagelink="";
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my $path="";
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my $title=$config{wikiname};
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foreach my $dir (split("/", $page)) {
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next if $dir eq 'index';
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push @ret, { url => urlto($path, $page), page => $title };
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$path.="/".$dir;
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$title=pagetitle($dir);
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}
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return @ret;
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} #}}}
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sub genpage ($$) { #{{{
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my $page=shift;
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my $content=shift;
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my $templatefile;
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run_hooks(templatefile => sub {
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return if defined $templatefile;
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my $file=shift->(page => $page);
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if (defined $file && defined template_file($file)) {
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$templatefile=$file;
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}
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});
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my $template=template(defined $templatefile ? $templatefile : 'page.tmpl', blind_cache => 1);
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my $actions=0;
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if (length $config{cgiurl}) {
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$template->param(editurl => cgiurl(do => "edit", page => pagetitle($page, 1)));
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$template->param(prefsurl => cgiurl(do => "prefs"));
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$actions++;
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}
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if (length $config{historyurl}) {
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my $u=$config{historyurl};
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$u=~s/\[\[file\]\]/$pagesources{$page}/g;
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$template->param(historyurl => $u);
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$actions++;
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}
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if ($config{discussion}) {
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my $discussionlink=gettext("discussion");
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if ($page !~ /.*\/\Q$discussionlink\E$/ &&
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(length $config{cgiurl} ||
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exists $links{$page."/".$discussionlink})) {
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$template->param(discussionlink => htmllink($page, $page, gettext("Discussion"), noimageinline => 1, forcesubpage => 1));
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$actions++;
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}
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}
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if ($actions) {
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$template->param(have_actions => 1);
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}
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my @backlinks=sort { $a->{page} cmp $b->{page} } backlinks($page);
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my ($backlinks, $more_backlinks);
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if (@backlinks <= $config{numbacklinks} || ! $config{numbacklinks}) {
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$backlinks=\@backlinks;
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$more_backlinks=[];
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}
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else {
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$backlinks=[@backlinks[0..$config{numbacklinks}-1]];
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$more_backlinks=[@backlinks[$config{numbacklinks}..$#backlinks]];
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}
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$template->param(
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title => $page eq 'index'
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? $config{wikiname}
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: pagetitle(basename($page)),
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wikiname => $config{wikiname},
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parentlinks => [parentlinks($page)],
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content => $content,
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backlinks => $backlinks,
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more_backlinks => $more_backlinks,
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mtime => displaytime($pagemtime{$page}),
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ctime => displaytime($pagectime{$page}),
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baseurl => baseurl($page),
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);
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run_hooks(pagetemplate => sub {
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shift->(page => $page, destpage => $page, template => $template);
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});
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$content=$template->output;
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run_hooks(format => sub {
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$content=shift->(
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page => $page,
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content => $content,
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);
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});
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return $content;
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} #}}}
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sub scan ($) { #{{{
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my $file=shift;
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my $type=pagetype($file);
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if (defined $type) {
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my $srcfile=srcfile($file);
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my $content=readfile($srcfile);
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my $page=pagename($file);
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will_render($page, htmlpage($page), 1);
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# Always needs to be done, since filters might add links
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# to the content.
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$content=filter($page, $page, $content);
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if ($config{discussion}) {
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# Discussion links are a special case since they're
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# not in the text of the page, but on its template.
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$links{$page}=[ $page."/".gettext("discussion") ];
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}
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else {
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$links{$page}=[];
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}
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run_hooks(scan => sub {
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shift->(
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page => $page,
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content => $content,
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);
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});
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# Preprocess in scan-only mode.
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preprocess($page, $page, $content, 1);
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}
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else {
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will_render($file, $file, 1);
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}
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} #}}}
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sub render ($) { #{{{
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my $file=shift;
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my $type=pagetype($file);
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my $srcfile=srcfile($file);
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if (defined $type) {
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my $page=pagename($file);
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delete $depends{$page};
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will_render($page, htmlpage($page), 1);
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return if $type=~/^_/;
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my $content=htmlize($page, $type,
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linkify($page, $page,
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preprocess($page, $page,
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filter($page, $page,
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readfile($srcfile)))));
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my $output=htmlpage($page);
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writefile($output, $config{destdir}, genpage($page, $content));
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}
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else {
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delete $depends{$file};
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will_render($file, $file, 1);
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if ($config{hardlink}) {
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prep_writefile($file, $config{destdir});
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unlink($config{destdir}."/".$file);
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if (link($srcfile, $config{destdir}."/".$file)) {
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return;
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}
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# if hardlink fails, fall back to copying
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}
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my $srcfd=readfile($srcfile, 1, 1);
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writefile($file, $config{destdir}, undef, 1, sub {
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my $destfd=shift;
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my $cleanup=shift;
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my $blksize = 16384;
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my ($len, $buf, $written);
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while ($len = sysread $srcfd, $buf, $blksize) {
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if (! defined $len) {
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next if $! =~ /^Interrupted/;
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error("failed to read $srcfile: $!", $cleanup);
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}
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my $offset = 0;
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while ($len) {
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defined($written = syswrite $destfd, $buf, $len, $offset)
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or error("failed to write $file: $!", $cleanup);
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$len -= $written;
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$offset += $written;
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}
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}
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});
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}
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} #}}}
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sub prune ($) { #{{{
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my $file=shift;
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unlink($file);
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my $dir=dirname($file);
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while (rmdir($dir)) {
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$dir=dirname($dir);
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}
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} #}}}
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sub refresh () { #{{{
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# security check, avoid following symlinks in the srcdir path
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my $test=$config{srcdir};
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while (length $test) {
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if (-l $test) {
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error("symlink found in srcdir path ($test)");
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}
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unless ($test=~s/\/+$//) {
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$test=dirname($test);
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}
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}
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run_hooks(refresh => sub { shift->() });
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# find existing pages
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my %exists;
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my @files;
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eval q{use File::Find};
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error($@) if $@;
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find({
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no_chdir => 1,
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wanted => sub {
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$_=decode_utf8($_);
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if (file_pruned($_, $config{srcdir})) {
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$File::Find::prune=1;
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}
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elsif (! -l $_ && ! -d _) {
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my ($f)=/$config{wiki_file_regexp}/; # untaint
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if (! defined $f) {
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warn(sprintf(gettext("skipping bad filename %s"), $_)."\n");
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}
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else {
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$f=~s/^\Q$config{srcdir}\E\/?//;
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push @files, $f;
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$exists{pagename($f)}=1;
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}
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}
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},
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}, $config{srcdir});
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foreach my $dir (@{$config{underlaydirs}}, $config{underlaydir}) {
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find({
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no_chdir => 1,
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wanted => sub {
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$_=decode_utf8($_);
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if (file_pruned($_, $dir)) {
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$File::Find::prune=1;
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}
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elsif (! -l $_ && ! -d _) {
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my ($f)=/$config{wiki_file_regexp}/; # untaint
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if (! defined $f) {
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warn(sprintf(gettext("skipping bad filename %s"), $_)."\n");
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}
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else {
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$f=~s/^\Q$dir\E\/?//;
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# avoid underlaydir
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# override attacks; see
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# security.mdwn
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if (! -l "$config{srcdir}/$f" &&
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! -e _) {
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my $page=pagename($f);
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if (! $exists{$page}) {
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push @files, $f;
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$exists{$page}=1;
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}
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}
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}
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}
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},
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}, $dir);
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};
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my (%rendered, @add, @del, @internal);
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# check for added or removed pages
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foreach my $file (@files) {
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my $page=pagename($file);
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$pagesources{$page}=$file;
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if (! $pagemtime{$page}) {
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if (isinternal($page)) {
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push @internal, $file;
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}
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else {
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push @add, $file;
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if ($config{getctime} && -e "$config{srcdir}/$file") {
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eval {
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my $time=rcs_getctime("$config{srcdir}/$file");
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$pagectime{$page}=$time;
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};
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if ($@) {
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print STDERR $@;
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}
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}
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}
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$pagecase{lc $page}=$page;
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if (! exists $pagectime{$page}) {
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$pagectime{$page}=(srcfile_stat($file))[10];
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}
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}
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}
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foreach my $page (keys %pagemtime) {
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if (! $exists{$page}) {
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if (isinternal($page)) {
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push @internal, $pagesources{$page};
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}
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else {
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debug(sprintf(gettext("removing old page %s"), $page));
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push @del, $pagesources{$page};
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}
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$links{$page}=[];
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$renderedfiles{$page}=[];
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$pagemtime{$page}=0;
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prune($config{destdir}."/".$_)
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foreach @{$oldrenderedfiles{$page}};
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delete $pagesources{$page};
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foreach (keys %destsources) {
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if ($destsources{$_} eq $page) {
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delete $destsources{$_};
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}
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}
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}
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}
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# find changed and new files
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my @needsbuild;
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foreach my $file (@files) {
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my $page=pagename($file);
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my ($srcfile, @stat)=srcfile_stat($file);
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if (! exists $pagemtime{$page} ||
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$stat[9] > $pagemtime{$page} ||
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$forcerebuild{$page}) {
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$pagemtime{$page}=$stat[9];
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if (isinternal($page)) {
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push @internal, $file;
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# Preprocess internal page in scan-only mode.
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preprocess($page, $page, readfile($srcfile), 1);
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}
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else {
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push @needsbuild, $file;
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}
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}
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}
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run_hooks(needsbuild => sub { shift->(\@needsbuild) });
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# scan and render files
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foreach my $file (@needsbuild) {
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debug(sprintf(gettext("scanning %s"), $file));
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scan($file);
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}
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calculate_backlinks();
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foreach my $file (@needsbuild) {
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debug(sprintf(gettext("rendering %s"), $file));
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render($file);
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$rendered{$file}=1;
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}
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foreach my $file (@internal) {
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# internal pages are not rendered
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my $page=pagename($file);
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delete $depends{$page};
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foreach my $old (@{$renderedfiles{$page}}) {
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delete $destsources{$old};
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}
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$renderedfiles{$page}=[];
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}
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# rebuild pages that link to added or removed pages
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if (@add || @del) {
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foreach my $f (@add, @del) {
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my $p=pagename($f);
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foreach my $page (keys %{$backlinks{$p}}) {
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my $file=$pagesources{$page};
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next if $rendered{$file};
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debug(sprintf(gettext("rendering %s, which links to %s"), $file, $p));
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render($file);
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$rendered{$file}=1;
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}
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}
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}
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if (%rendered || @del || @internal) {
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my @changed=(keys %rendered, @del);
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# rebuild dependant pages
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foreach my $f (@files) {
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next if $rendered{$f};
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my $p=pagename($f);
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if (exists $depends{$p}) {
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# only consider internal files
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# if the page explicitly depends on such files
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foreach my $file (@changed, $depends{$p}=~/internal\(/ ? @internal : ()) {
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next if $f eq $file;
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my $page=pagename($file);
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if (pagespec_match($page, $depends{$p}, location => $p)) {
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debug(sprintf(gettext("rendering %s, which depends on %s"), $f, $page));
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render($f);
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$rendered{$f}=1;
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last;
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}
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}
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}
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}
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# handle backlinks; if a page has added/removed links,
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# update the pages it links to
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my %linkchanged;
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foreach my $file (@changed) {
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my $page=pagename($file);
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if (exists $links{$page}) {
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foreach my $link (map { bestlink($page, $_) } @{$links{$page}}) {
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if (length $link &&
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(! exists $oldlinks{$page} ||
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! grep { bestlink($page, $_) eq $link } @{$oldlinks{$page}})) {
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$linkchanged{$link}=1;
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}
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}
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}
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if (exists $oldlinks{$page}) {
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foreach my $link (map { bestlink($page, $_) } @{$oldlinks{$page}}) {
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if (length $link &&
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(! exists $links{$page} ||
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! grep { bestlink($page, $_) eq $link } @{$links{$page}})) {
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$linkchanged{$link}=1;
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}
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}
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}
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}
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foreach my $link (keys %linkchanged) {
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my $linkfile=$pagesources{$link};
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if (defined $linkfile) {
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next if $rendered{$linkfile};
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debug(sprintf(gettext("rendering %s, to update its backlinks"), $linkfile));
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render($linkfile);
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$rendered{$linkfile}=1;
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}
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}
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}
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# remove no longer rendered files
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foreach my $src (keys %rendered) {
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my $page=pagename($src);
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foreach my $file (@{$oldrenderedfiles{$page}}) {
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if (! grep { $_ eq $file } @{$renderedfiles{$page}}) {
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debug(sprintf(gettext("removing %s, no longer rendered by %s"), $file, $page));
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prune($config{destdir}."/".$file);
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}
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}
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}
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if (@del) {
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run_hooks(delete => sub { shift->(@del) });
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}
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if (%rendered) {
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run_hooks(change => sub { shift->(keys %rendered) });
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}
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} #}}}
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sub commandline_render () { #{{{
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lockwiki();
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loadindex();
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unlockwiki();
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my $srcfile=possibly_foolish_untaint($config{render});
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my $file=$srcfile;
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$file=~s/\Q$config{srcdir}\E\/?//;
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my $type=pagetype($file);
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die sprintf(gettext("ikiwiki: cannot render %s"), $srcfile)."\n" unless defined $type;
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my $content=readfile($srcfile);
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my $page=pagename($file);
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$pagesources{$page}=$file;
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$content=filter($page, $page, $content);
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$content=preprocess($page, $page, $content);
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$content=linkify($page, $page, $content);
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$content=htmlize($page, $type, $content);
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$pagemtime{$page}=(stat($srcfile))[9];
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print genpage($page, $content);
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exit 0;
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} #}}}
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1
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