316 lines
7.3 KiB
Perl
316 lines
7.3 KiB
Perl
package IkiWiki;
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use warnings;
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use strict;
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use File::Spec;
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sub linkify ($$) { #{{{
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my $content=shift;
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my $page=shift;
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$content =~ s{(\\?)$config{wiki_link_regexp}}{
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$1 ? "[[$2]]" : htmllink($page, $2)
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}eg;
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return $content;
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} #}}}
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sub htmlize ($$) { #{{{
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my $type=shift;
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my $content=shift;
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if (! $INC{"/usr/bin/markdown"}) {
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no warnings 'once';
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$blosxom::version="is a proper perl module too much to ask?";
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use warnings 'all';
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do "/usr/bin/markdown";
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}
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if ($type eq '.mdwn') {
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return Markdown::Markdown($content);
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}
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else {
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error("htmlization of $type not supported");
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}
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} #}}}
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sub backlinks ($) { #{{{
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my $page=shift;
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my @links;
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foreach my $p (keys %links) {
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next if bestlink($page, $p) eq $page;
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if (grep { length $_ && bestlink($p, $_) eq $page } @{$links{$p}}) {
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my $href=File::Spec->abs2rel(htmlpage($p), dirname($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 => $p_trimmed };
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}
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}
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return sort { $a->{page} cmp $b->{page} } @links;
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} #}}}
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sub parentlinks ($) { #{{{
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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 $skip=1;
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foreach my $dir (reverse split("/", $page)) {
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if (! $skip) {
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$path.="../";
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unshift @ret, { url => "$path$dir.html", page => $dir };
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}
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else {
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$skip=0;
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}
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}
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unshift @ret, { url => length $path ? $path : ".", page => $config{wikiname} };
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return @ret;
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} #}}}
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sub finalize ($$$) { #{{{
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my $content=shift;
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my $page=shift;
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my $mtime=shift;
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my $title=pagetitle(basename($page));
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my $template=HTML::Template->new(blind_cache => 1,
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filename => "$config{templatedir}/page.tmpl");
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if (length $config{cgiurl}) {
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$template->param(editurl => "$config{cgiurl}?do=edit&page=$page");
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$template->param(prefsurl => "$config{cgiurl}?do=prefs");
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if ($config{rcs}) {
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$template->param(recentchangesurl => "$config{cgiurl}?do=recentchanges");
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}
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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 => $u);
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}
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$template->param(
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title => $title,
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wikiname => $config{wikiname},
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parentlinks => [parentlinks($page)],
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content => $content,
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backlinks => [backlinks($page)],
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discussionlink => htmllink($page, "Discussion", 1, 1),
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mtime => scalar(gmtime($mtime)),
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);
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return $template->output;
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} #}}}
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sub check_overwrite ($$) { #{{{
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# Important security check. Make sure to call this before saving
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# any files to the source directory.
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my $dest=shift;
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my $src=shift;
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if (! exists $renderedfiles{$src} && -e $dest && ! $config{rebuild}) {
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error("$dest already exists and was rendered from ".
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join(" ",(grep { $renderedfiles{$_} eq $dest } keys
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%renderedfiles)).
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", before, so not rendering from $src");
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}
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} #}}}
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sub mtime ($) { #{{{
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my $page=shift;
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return (stat($page))[9];
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} #}}}
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sub findlinks ($$) { #{{{
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my $content=shift;
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my $page=shift;
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my @links;
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while ($content =~ /(?<!\\)$config{wiki_link_regexp}/g) {
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push @links, lc($1);
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}
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# Discussion links are a special case since they're not in the text
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# of the page, but on its template.
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return @links, "$page/discussion";
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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 $content=readfile("$config{srcdir}/$file");
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if ($type ne 'unknown') {
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my $page=pagename($file);
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$links{$page}=[findlinks($content, $page)];
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$content=linkify($content, $page);
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$content=htmlize($type, $content);
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$content=finalize($content, $page,
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mtime("$config{srcdir}/$file"));
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check_overwrite("$config{destdir}/".htmlpage($page), $page);
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writefile("$config{destdir}/".htmlpage($page), $content);
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$oldpagemtime{$page}=time;
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$renderedfiles{$page}=htmlpage($page);
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}
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else {
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$links{$file}=[];
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check_overwrite("$config{destdir}/$file", $file);
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writefile("$config{destdir}/$file", $content);
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$oldpagemtime{$file}=time;
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$renderedfiles{$file}=$file;
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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($dir);
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}
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} #}}}
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sub refresh () { #{{{
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# find existing pages
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my %exists;
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my @files;
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eval q{use File::Find};
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find({
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no_chdir => 1,
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wanted => sub {
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if (/$config{wiki_file_prune_regexp}/) {
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no warnings 'once';
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$File::Find::prune=1;
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use warnings "all";
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}
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elsif (! -d $_ && ! -l $_) {
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my ($f)=/$config{wiki_file_regexp}/; # untaint
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if (! defined $f) {
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warn("skipping bad filename $_\n");
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}
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else {
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$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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my %rendered;
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# check for added or removed pages
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my @add;
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foreach my $file (@files) {
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my $page=pagename($file);
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if (! $oldpagemtime{$page}) {
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debug("new page $page");
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push @add, $file;
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$links{$page}=[];
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$pagesources{$page}=$file;
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}
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}
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my @del;
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foreach my $page (keys %oldpagemtime) {
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if (! $exists{$page}) {
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debug("removing old page $page");
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push @del, $pagesources{$page};
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prune($config{destdir}."/".$renderedfiles{$page});
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delete $renderedfiles{$page};
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$oldpagemtime{$page}=0;
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delete $pagesources{$page};
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}
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}
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# render any updated files
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foreach my $file (@files) {
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my $page=pagename($file);
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if (! exists $oldpagemtime{$page} ||
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mtime("$config{srcdir}/$file") > $oldpagemtime{$page}) {
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debug("rendering changed file $file");
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render($file);
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$rendered{$file}=1;
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}
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}
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# if any files were added or removed, check to see if each page
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# needs an update due to linking to them
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# TODO: inefficient; pages may get rendered above and again here;
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# problem is the bestlink may have changed and we won't know until
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# now
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if (@add || @del) {
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FILE: foreach my $file (@files) {
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my $page=pagename($file);
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foreach my $f (@add, @del) {
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my $p=pagename($f);
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foreach my $link (@{$links{$page}}) {
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if (bestlink($page, $link) eq $p) {
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debug("rendering $file, which links to $p");
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render($file);
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$rendered{$file}=1;
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next FILE;
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}
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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, update the
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# pages it links to
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# TODO: inefficient; pages may get rendered above and again here;
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# problem is the backlinks could be wrong in the first pass render
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# above
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if (%rendered) {
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my %linkchanged;
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foreach my $file (keys %rendered, @del) {
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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 { $_ 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 { $_ 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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debug("rendering $linkfile, to update its backlinks");
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render($linkfile);
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}
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}
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}
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} #}}}
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1
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