]> sipb.mit.edu Git - ikiwiki.git/blobdiff - IkiWiki/Render.pm
don't force a rebuild
[ikiwiki.git] / IkiWiki / Render.pm
index 5336d4f545e3bc7cff7cc606fc91432e2e3721bd..e98888d76ecd17709e054b3a7068e0c439341a8a 100644 (file)
@@ -7,9 +7,7 @@ use strict;
 use IkiWiki;
 use Encode;
 
-my (%backlinks, %rendered, @new, @del, @internal, @internal_change, @files,
-       %page_exists, %oldlink_targets, %backlinkchanged,
-       %linkchangers);
+my (%backlinks, %rendered);
 our %brokenlinks;
 my $links_calculated=0;
 
@@ -63,6 +61,10 @@ sub backlinks ($) {
 sub genpage ($$) {
        my $page=shift;
        my $content=shift;
+       
+       run_hooks(postscan => sub {
+               shift->(page => $page, content => $content);
+       });
 
        my $templatefile;
        run_hooks(templatefile => sub {
@@ -76,11 +78,14 @@ sub genpage ($$) {
        my $actions=0;
 
        if (length $config{cgiurl}) {
-               $template->param(editurl => cgiurl(do => "edit", page => $page))
-                       if IkiWiki->can("cgi_editpage");
-               $template->param(prefsurl => cgiurl(do => "prefs"))
-                       if exists $hooks{auth};
-               $actions++;
+               if (IkiWiki->can("cgi_editpage")) {
+                       $template->param(editurl => cgiurl(do => "edit", page => $page));
+                       $actions++;
+               }
+               if (exists $hooks{auth}) {
+                       $template->param(prefsurl => cgiurl(do => "prefs"));
+                       $actions++;
+               }
        }
                
        if (defined $config{historyurl} && length $config{historyurl}) {
@@ -90,7 +95,7 @@ sub genpage ($$) {
                $actions++;
        }
        if ($config{discussion}) {
-               if ($page !~ /.*\/\Q$config{discussionpage}\E$/ &&
+               if ($page !~ /.*\/\Q$config{discussionpage}\E$/i &&
                   (length $config{cgiurl} ||
                    exists $links{$page."/".$config{discussionpage}})) {
                        $template->param(discussionlink => htmllink($page, $page, $config{discussionpage}, noimageinline => 1, forcesubpage => 1));
@@ -132,10 +137,6 @@ sub genpage ($$) {
        
        $content=$template->output;
        
-       run_hooks(postscan => sub {
-               shift->(page => $page, content => $content);
-       });
-
        run_hooks(format => sub {
                $content=shift->(
                        page => $page,
@@ -166,6 +167,7 @@ sub scan ($) {
                else {
                        $links{$page}=[];
                }
+               delete $typedlinks{$page};
 
                run_hooks(scan => sub {
                        shift->(
@@ -280,30 +282,33 @@ sub srcdir_check () {
 }
 
 sub find_src_files () {
-       my @ret;
+       my @files;
+       my %pages;
        eval q{use File::Find};
        error($@) if $@;
        find({
                no_chdir => 1,
                wanted => sub {
-                       $_=decode_utf8($_);
-                       if (file_pruned($_, $config{srcdir})) {
+                       my $file=decode_utf8($_);
+                       $file=~s/^\Q$config{srcdir}\E\/?//;
+                       return if -l $_ || -d _ || ! length $file;
+                       my $page = pagename($file);
+                       if (! exists $pagesources{$page} &&
+                           file_pruned($file)) {
                                $File::Find::prune=1;
+                               return;
                        }
-                       elsif (! -l $_ && ! -d _) {
-                               my ($f)=/$config{wiki_file_regexp}/; # untaint
-                               if (! defined $f) {
-                                       warn(sprintf(gettext("skipping bad filename %s"), $_)."\n");
-                               }
-                               else {
-                                       $f=~s/^\Q$config{srcdir}\E\/?//;
-                                       push @ret, $f;
-                                       my $page = pagename($f);
-                                       if ($page_exists{$page}) {
-                                               debug(sprintf(gettext("%s has multiple possible source pages"), $page));
-                                       }
-                                       $page_exists{$page}=1;
+
+                       my ($f) = $file =~ /$config{wiki_file_regexp}/; # untaint
+                       if (! defined $f) {
+                               warn(sprintf(gettext("skipping bad filename %s"), $file)."\n");
+                       }
+                       else {
+                               push @files, $f;
+                               if ($pages{$page}) {
+                                       debug(sprintf(gettext("%s has multiple possible source pages"), $page));
                                }
+                               $pages{$page}=1;
                        }
                },
        }, $config{srcdir});
@@ -311,38 +316,43 @@ sub find_src_files () {
                find({
                        no_chdir => 1,
                        wanted => sub {
-                               $_=decode_utf8($_);
-                               if (file_pruned($_, $dir)) {
+                               my $file=decode_utf8($_);
+                               $file=~s/^\Q$dir\E\/?//;
+                               return if -l $_ || -d _ || ! length $file;
+                               my $page=pagename($file);
+                               if (! exists $pagesources{$page} &&
+                                   file_pruned($file)) {
                                        $File::Find::prune=1;
+                                       return;
                                }
-                               elsif (! -l $_ && ! -d _) {
-                                       my ($f)=/$config{wiki_file_regexp}/; # untaint
-                                       if (! defined $f) {
-                                               warn(sprintf(gettext("skipping bad filename %s"), $_)."\n");
-                                       }
-                                       else {
-                                               $f=~s/^\Q$dir\E\/?//;
-                                               # avoid underlaydir
-                                               # override attacks; see
-                                               # security.mdwn
-                                               if (! -l "$config{srcdir}/$f" && 
-                                                   ! -e _) {
-                                                       my $page=pagename($f);
-                                                       if (! $page_exists{$page}) {
-                                                               push @ret, $f;
-                                                               $page_exists{$page}=1;
-                                                       }
+
+                               my ($f) = $file =~ /$config{wiki_file_regexp}/; # untaint
+                               if (! defined $f) {
+                                       warn(sprintf(gettext("skipping bad filename %s"), $file)."\n");
+                               }
+                               else {
+                                       # avoid underlaydir override
+                                       # attacks; see security.mdwn
+                                       if (! -l "$config{srcdir}/$f" && 
+                                           ! -e _) {
+                                               if (! $pages{$page}) {
+                                                       push @files, $f;
+                                                       $pages{$page}=1;
                                                }
                                        }
                                }
                        },
                }, $dir);
        };
-       return \@ret;
+       return \@files, \%pages;
 }
 
-sub process_new_files () {
-       foreach my $file (@files) {
+sub find_new_files ($) {
+       my $files=shift;
+       my @new;
+       my @internal_new;
+
+       foreach my $file (@$files) {
                my $page=pagename($file);
                if (exists $pagesources{$page} && $pagesources{$page} ne $file) {
                        # the page has changed its type
@@ -351,7 +361,7 @@ sub process_new_files () {
                $pagesources{$page}=$file;
                if (! $pagemtime{$page}) {
                        if (isinternal($page)) {
-                               push @internal, $file;
+                               push @internal_new, $file;
                        }
                        else {
                                push @new, $file;
@@ -371,37 +381,60 @@ sub process_new_files () {
                        }
                }
        }
+
+       return \@new, \@internal_new;
 }
 
-sub process_del_files () {
+sub find_del_files ($) {
+       my $pages=shift;
+       my @del;
+       my @internal_del;
+
        foreach my $page (keys %pagemtime) {
-               if (! $page_exists{$page}) {
+               if (! $pages->{$page}) {
                        if (isinternal($page)) {
-                               push @internal, $pagesources{$page};
+                               push @internal_del, $pagesources{$page};
                        }
                        else {
-                               debug(sprintf(gettext("removing old page %s"), $page));
                                push @del, $pagesources{$page};
                        }
                        $links{$page}=[];
+                       delete $typedlinks{$page};
                        $renderedfiles{$page}=[];
                        $pagemtime{$page}=0;
-                       foreach my $old (@{$oldrenderedfiles{$page}}) {
-                               prune($config{destdir}."/".$old);
-                       }
-                       delete $pagesources{$page};
-                       foreach my $source (keys %destsources) {
-                               if ($destsources{$source} eq $page) {
-                                       delete $destsources{$source};
-                               }
+               }
+       }
+
+       return \@del, \@internal_del;
+}
+
+sub remove_del (@) {
+       foreach my $file (@_) {
+               my $page=pagename($file);
+               if (! isinternal($page)) {
+                       debug(sprintf(gettext("removing old page %s"), $page));
+               }
+       
+               foreach my $old (@{$oldrenderedfiles{$page}}) {
+                       prune($config{destdir}."/".$old);
+               }
+
+               foreach my $source (keys %destsources) {
+                       if ($destsources{$source} eq $page) {
+                               delete $destsources{$source};
                        }
                }
+       
+               delete $pagecase{lc $page};
+               delete $pagesources{$page};
        }
 }
 
-sub find_needsbuild () {
-       my @needsbuild;
-       foreach my $file (@files) {
+sub find_changed ($) {
+       my $files=shift;
+       my @changed;
+       my @internal_changed;
+       foreach my $file (@$files) {
                my $page=pagename($file);
                my ($srcfile, @stat)=srcfile_stat($file);
                if (! exists $pagemtime{$page} ||
@@ -412,24 +445,28 @@ sub find_needsbuild () {
                        if (isinternal($page)) {
                                # Preprocess internal page in scan-only mode.
                                preprocess($page, $page, readfile($srcfile), 1);
-                               push @internal_change, $file;
+                               push @internal_changed, $file;
                        }
                        else {
-                               push @needsbuild, $file;
+                               push @changed, $file;
                        }
                }
        }
-       return @needsbuild;
+       return \@changed, \@internal_changed;
 }
 
-sub calculate_old_links ($) {
-       my $file=shift;
-       my $page=pagename($file);
-       if (exists $oldlinks{$page}) {
-               foreach my $l (@{$oldlinks{$page}}) {
-                       $oldlink_targets{$page}{$l}=bestlink($page, $l);
+sub calculate_old_links ($$) {
+       my ($changed, $del)=@_;
+       my %oldlink_targets;
+       foreach my $file (@$changed, @$del) {
+               my $page=pagename($file);
+               if (exists $oldlinks{$page}) {
+                       foreach my $l (@{$oldlinks{$page}}) {
+                               $oldlink_targets{$page}{$l}=bestlink($page, $l);
+                       }
                }
        }
+       return \%oldlink_targets;
 }
 
 sub derender_internal ($) {
@@ -464,37 +501,79 @@ sub remove_unrendered () {
        }
 }
 
-sub calculate_changed_links ($) {
-       my $file=shift;
-       my $page=pagename($file);
-       if (exists $links{$page}) {
-               foreach my $l (@{$links{$page}}) {
-                       my $target=bestlink($page, $l);
-                       if (! exists $oldlink_targets{$page}{$l} ||
-                           $target ne $oldlink_targets{$page}{$l}) {
-                               $backlinkchanged{$l}=1;
-                               $linkchangers{lc($page)}=1;
-                       }
-                       delete $oldlink_targets{$page}{$l};
+sub link_types_changed ($$) {
+       # each is of the form { type => { link => 1 } }
+       my $new = shift;
+       my $old = shift;
+
+       return 0 if !defined $new && !defined $old;
+       return 1 if !defined $new || !defined $old;
+
+       while (my ($type, $links) = each %$new) {
+               foreach my $link (keys %$links) {
+                       return 1 unless exists $old->{$type}{$link};
                }
        }
-       if (exists $oldlink_targets{$page} &&
-           %{$oldlink_targets{$page}}) {
-               foreach my $target (keys %{$oldlink_targets{$page}}) {
-                       $backlinkchanged{$target}=1;
+
+       while (my ($type, $links) = each %$old) {
+               foreach my $link (keys %$links) {
+                       return 1 unless exists $new->{$type}{$link};
                }
-               $linkchangers{lc($page)}=1;
        }
+
+       return 0;
 }
 
-sub render_dependent () {
-       my @changed=(keys %rendered, @del);
-       my @exists_changed=(@new, @del);
+sub calculate_changed_links ($$$) {
+       my ($changed, $del, $oldlink_targets)=@_;
+
+       my (%backlinkchanged, %linkchangers);
+
+       foreach my $file (@$changed, @$del) {
+               my $page=pagename($file);
+
+               if (exists $links{$page}) {
+                       foreach my $l (@{$links{$page}}) {
+                               my $target=bestlink($page, $l);
+                               if (! exists $oldlink_targets->{$page}{$l} ||
+                                   $target ne $oldlink_targets->{$page}{$l}) {
+                                       $backlinkchanged{$target}=1;
+                                       $linkchangers{lc($page)}=1;
+                               }
+                               delete $oldlink_targets->{$page}{$l};
+                       }
+               }
+               if (exists $oldlink_targets->{$page} &&
+                   %{$oldlink_targets->{$page}}) {
+                       foreach my $target (values %{$oldlink_targets->{$page}}) {
+                               $backlinkchanged{$target}=1;
+                       }
+                       $linkchangers{lc($page)}=1;
+               }
+
+               # we currently assume that changing the type of a link doesn't
+               # change backlinks
+               if (!exists $linkchangers{lc($page)}) {
+                       if (link_types_changed($typedlinks{$page}, $oldtypedlinks{$page})) {
+                               $linkchangers{lc($page)}=1;
+                       }
+               }
+       }
+
+       return \%backlinkchanged, \%linkchangers;
+}
+
+sub render_dependent ($$$$$$$) {
+       my ($files, $new, $internal_new, $del, $internal_del,
+               $internal_changed, $linkchangers)=@_;
+
+       my @changed=(keys %rendered, @$del);
+       my @exists_changed=(@$new, @$del);
        
        my %lc_changed = map { lc(pagename($_)) => 1 } @changed;
        my %lc_exists_changed = map { lc(pagename($_)) => 1 } @exists_changed;
         
-       foreach my $f (@files) {
+       foreach my $f (@$files) {
                next if $rendered{$f};
                my $p=pagename($f);
                my $reason = undef;
@@ -508,7 +587,7 @@ sub render_dependent () {
                                     $lc_exists_changed{$d})
                                    ||
                                    ($depends_simple{$p}{$d} & $IkiWiki::DEPEND_LINKS &&
-                                    $linkchangers{$d})
+                                    $linkchangers->{$d})
                                ) {
                                        $reason = $d;
                                        last;
@@ -517,37 +596,53 @@ sub render_dependent () {
                }
        
                if (exists $depends{$p} && ! defined $reason) {
-                       D: foreach my $d (keys %{$depends{$p}}) {
-                               my $sub=pagespec_translate($d);
-                               next if $@ || ! defined $sub;
+                       foreach my $dep (keys %{$depends{$p}}) {
+                               my $sub=pagespec_translate($dep);
+                               next unless defined $sub;
 
                                # only consider internal files
                                # if the page explicitly depends
                                # on such files
-                               my $internal_dep=$d =~ /internal\(/;
-
-                               my @candidates;
-                               if ($depends{$p}{$d} & $IkiWiki::DEPEND_PRESENCE) {
-                                       @candidates=@exists_changed;
-                                       push @candidates, @internal
-                                               if $internal_dep;
-                               }
-                               if (($depends{$p}{$d} & ($IkiWiki::DEPEND_CONTENT | $IkiWiki::DEPEND_LINKS))) {
-                                       @candidates=@changed;
-                                       push @candidates, @internal, @internal_change
-                                               if $internal_dep;
-                               }
-
-                               foreach my $file (@candidates) {
-                                       next if $file eq $f;
-                                       my $page=pagename($file);
-                                       if ($sub->($page, location => $p)) {
-                                               if ($depends{$p}{$d} & $IkiWiki::DEPEND_LINKS) {
-                                                       next unless $linkchangers{lc($page)};
+                               my $internal_dep=$dep =~ /internal\(/;
+
+                               my $in=sub {
+                                       my $list=shift;
+                                       my $type=shift;
+                                       foreach my $file (@$list) {
+                                               next if $file eq $f;
+                                               my $page=pagename($file);
+                                               if ($sub->($page, location => $p)) {
+                                                       if ($type == $IkiWiki::DEPEND_LINKS) {
+                                                               next unless $linkchangers->{lc($page)};
+                                                       }
+                                                       return $page;
                                                }
-                                               $reason = $page;
-                                               last D;
                                        }
+                                       return undef;
+                               };
+
+                               if ($depends{$p}{$dep} & $IkiWiki::DEPEND_CONTENT) {
+                                       last if $reason =
+                                               $in->(\@changed, $IkiWiki::DEPEND_CONTENT);
+                                       last if $internal_dep && ($reason =
+                                               $in->($internal_new, $IkiWiki::DEPEND_CONTENT) ||
+                                               $in->($internal_del, $IkiWiki::DEPEND_CONTENT) ||
+                                               $in->($internal_changed, $IkiWiki::DEPEND_CONTENT));
+                               }
+                               if ($depends{$p}{$dep} & $IkiWiki::DEPEND_PRESENCE) {
+                                       last if $reason = 
+                                               $in->(\@exists_changed, $IkiWiki::DEPEND_PRESENCE);
+                                       last if $internal_dep && ($reason =
+                                               $in->($internal_new, $IkiWiki::DEPEND_PRESENCE) ||
+                                               $in->($internal_del, $IkiWiki::DEPEND_PRESENCE));
+                               }
+                               if ($depends{$p}{$dep} & $IkiWiki::DEPEND_LINKS) {
+                                       last if $reason =
+                                               $in->(\@changed, $IkiWiki::DEPEND_LINKS);
+                                       last if $internal_dep && ($reason =
+                                               $in->($internal_new, $IkiWiki::DEPEND_LINKS) ||
+                                               $in->($internal_del, $IkiWiki::DEPEND_LINKS) ||
+                                               $in->($internal_changed, $IkiWiki::DEPEND_LINKS));
                                }
                        }
                }
@@ -561,8 +656,9 @@ sub render_dependent () {
        return 0;
 }
 
-sub render_backlinks () {
-       foreach my $link (keys %backlinkchanged) {
+sub render_backlinks ($) {
+       my $backlinkchanged=shift;
+       foreach my $link (keys %$backlinkchanged) {
                my $linkfile=$pagesources{$link};
                if (defined $linkfile) {
                        render($linkfile, sprintf(gettext("building %s, to update its backlinks"), $linkfile));
@@ -573,53 +669,64 @@ sub render_backlinks () {
 sub refresh () {
        srcdir_check();
        run_hooks(refresh => sub { shift->() });
-       @files=@{find_src_files()};
-       process_new_files();
-       process_del_files();
-
-       my @needsbuild=find_needsbuild();
-       run_hooks(needsbuild => sub { shift->(\@needsbuild) });
-
-       foreach my $file (@needsbuild, @del) {
-               calculate_old_links($file);
-       }
-
-       foreach my $file (@needsbuild) {
+       my ($files, $pages)=find_src_files();
+       my ($new, $internal_new)=find_new_files($files);
+       my ($del, $internal_del)=find_del_files($pages);
+       my ($changed, $internal_changed)=find_changed($files);
+       run_hooks(needsbuild => sub { shift->($changed) });
+       my $oldlink_targets=calculate_old_links($changed, $del);
+
+       foreach my $file (@$changed) {
                scan($file);
        }
 
        calculate_links();
+       
+       remove_del(@$del, @$internal_del);
 
-       foreach my $file (@needsbuild) {
+       foreach my $file (@$changed) {
                render($file, sprintf(gettext("building %s"), $file));
        }
-       foreach my $file (@internal, @internal_change) {
+       foreach my $file (@$internal_new, @$internal_del, @$internal_changed) {
                derender_internal($file);
        }
 
-       foreach my $file (@needsbuild, @del) {
-               calculate_changed_links($file);
-       }
+       my ($backlinkchanged, $linkchangers)=calculate_changed_links($changed,
+               $del, $oldlink_targets);
 
-       foreach my $file (@new, @del) {
+       foreach my $file (@$new, @$del) {
                render_linkers($file);
        }
        
-       if (@needsbuild || @del || @internal || @internal_change) {
-               1 while render_dependent();
+       if (@$changed || @$internal_changed ||
+           @$del || @$internal_del || @$internal_new) {
+               1 while render_dependent($files, $new, $internal_new,
+                       $del, $internal_del, $internal_changed,
+                       $linkchangers);
        }
 
-       render_backlinks();
+       render_backlinks($backlinkchanged);
        remove_unrendered();
 
-       if (@del) {
-               run_hooks(delete => sub { shift->(@del) });
+       if (@$del) {
+               run_hooks(delete => sub { shift->(@$del) });
        }
        if (%rendered) {
                run_hooks(change => sub { shift->(keys %rendered) });
        }
 }
 
+sub clean_rendered {
+       lockwiki();
+       loadindex();
+       remove_unrendered();
+       foreach my $page (keys %oldrenderedfiles) {
+               foreach my $file (@{$oldrenderedfiles{$page}}) {
+                       prune($config{destdir}."/".$file);
+               }
+       }
+}
+
 sub commandline_render () {
        lockwiki();
        loadindex();