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po(isvalidpo): more meaningful error message
[git.ikiwiki.info.git] / IkiWiki / Plugin / rename.pm
diff --git a/IkiWiki/Plugin/rename.pm b/IkiWiki/Plugin/rename.pm
index d3fc7681d5b8ba51e574f5b40470e6fb404c7714..82639a073349f8f2ef1d5943df11b653a2f88a9a 100644 (file)
--- a/IkiWiki/Plugin/rename.pm
+++ b/IkiWiki/Plugin/rename.pm
@@ -3,28 +3,114 @@ package IkiWiki::Plugin::rename;
 
 use warnings;
 use strict;
 
 use warnings;
 use strict;
-use IkiWiki 2.00;
+use IkiWiki 3.00;
 
 
-sub import { #{{{
+sub import {
+       hook(type => "getsetup", id => "rename", call => \&getsetup);
        hook(type => "formbuilder_setup", id => "rename", call => \&formbuilder_setup);
        hook(type => "formbuilder", id => "rename", call => \&formbuilder);
        hook(type => "sessioncgi", id => "rename", call => \&sessioncgi);
 
        hook(type => "formbuilder_setup", id => "rename", call => \&formbuilder_setup);
        hook(type => "formbuilder", id => "rename", call => \&formbuilder);
        hook(type => "sessioncgi", id => "rename", call => \&sessioncgi);
 
-} # }}}
+}
 
 
-sub formbuilder_setup (@) { #{{{
-       my %params=@_;
-       my $form=$params{form};
-       my $q=$params{cgi};
+sub getsetup () {
+       return 
+               plugin => {
+                       safe => 1,
+                       rebuild => 0,
+               },
+}
 
 
-       if (defined $form->field("do") && $form->field("do") eq "edit") {
-               # Rename button for the page, and also for attachments.
-               push @{$params{buttons}}, "Rename";
-               $form->tmpl_param("field-rename" => '<input name="_submit" type="submit" value="Rename Attachment" />');
+sub check_canrename ($$$$$$) {
+       my $src=shift;
+       my $srcfile=shift;
+       my $dest=shift;
+       my $destfile=shift;
+       my $q=shift;
+       my $session=shift;
+
+       my $attachment=! defined pagetype($pagesources{$src});
+
+       # Must be a known source file.
+       if (! exists $pagesources{$src}) {
+               error(sprintf(gettext("%s does not exist"),
+                       htmllink("", "", $src, noimageinline => 1)));
+       }
+       
+       # Must exist on disk, and be a regular file.
+       if (! -e "$config{srcdir}/$srcfile") {
+               error(sprintf(gettext("%s is not in the srcdir, so it cannot be renamed"), $srcfile));
+       }
+       elsif (-l "$config{srcdir}/$srcfile" && ! -f _) {
+               error(sprintf(gettext("%s is not a file"), $srcfile));
+       }
+
+       # Must be editable.
+       IkiWiki::check_canedit($src, $q, $session);
+       if ($attachment) {
+               if (IkiWiki::Plugin::attachment->can("check_canattach")) {
+                       IkiWiki::Plugin::attachment::check_canattach($session, $src, $srcfile);
+               }
+               else {
+                       error("renaming of attachments is not allowed");
+               }
+       }
+       
+       # Dest checks can be omitted by passing undef.
+       if (defined $dest) {
+               if ($srcfile eq $destfile) {
+                       error(gettext("no change to the file name was specified"));
+               }
+
+               # Must be a legal filename, and not absolute.
+               if (IkiWiki::file_pruned($destfile, $config{srcdir}) || 
+                   $destfile=~/^\//) {
+                       error(sprintf(gettext("illegal name")));
+               }
+
+               # Must not be a known source file.
+               if ($src ne $dest && exists $pagesources{$dest}) {
+                       error(sprintf(gettext("%s already exists"),
+                               htmllink("", "", $dest, noimageinline => 1)));
+               }
+       
+               # Must not exist on disk already.
+               if (-l "$config{srcdir}/$destfile" || -e _) {
+                       error(sprintf(gettext("%s already exists on disk"), $destfile));
+               }
+       
+               # Must be editable.
+               IkiWiki::check_canedit($dest, $q, $session);
+               if ($attachment) {
+                       # Note that $srcfile is used here, not $destfile,
+                       # because it wants the current file, to check it.
+                       IkiWiki::Plugin::attachment::check_canattach($session, $dest, $srcfile);
+               }
        }
        }
-} #}}}
 
 
-sub rename_form ($$$) { #{{{ 
+       my $canrename;
+       IkiWiki::run_hooks(canrename => sub {
+               return if defined $canrename;
+               my $ret=shift->($q, $session, src => $src, srcfile => $srcfile,
+                               dest => $dest, destfile => $destfile);
+               if (defined $ret) {
+                       if ($ret eq "") {
+                               $canrename=1;
+                       }
+                       elsif (ref $ret eq 'CODE') {
+                               $ret->();
+                               $canrename=0;
+                       }
+                       elsif (defined $ret) {
+                               error($ret);
+                               $canrename=0;
+                       }
+               }
+       });
+       return $canrename;
+}
+
+sub rename_form ($$$) {
        my $q=shift;
        my $session=shift;
        my $page=shift;
        my $q=shift;
        my $session=shift;
        my $page=shift;
@@ -33,7 +119,7 @@ sub rename_form ($$$) { #{{{
        error($@) if $@;
        my $f = CGI::FormBuilder->new(
                name => "rename",
        error($@) if $@;
        my $f = CGI::FormBuilder->new(
                name => "rename",
-               title => sprintf(gettext("rename %s"), IkiWiki::pagetitle($page)),
+               title => sprintf(gettext("rename %s"), pagetitle($page)),
                header => 0,
                charset => "utf-8",
                method => 'POST',
                header => 0,
                charset => "utf-8",
                method => 'POST',
@@ -46,11 +132,41 @@ sub rename_form ($$$) { #{{{
        
        $f->field(name => "do", type => "hidden", value => "rename", force => 1);
        $f->field(name => "page", type => "hidden", value => $page, force => 1);
        
        $f->field(name => "do", type => "hidden", value => "rename", force => 1);
        $f->field(name => "page", type => "hidden", value => $page, force => 1);
-       $f->field(name => "new_name", value => IkiWiki::pagetitle($page), size => 60);
+       $f->field(name => "new_name", value => pagetitle($page, 1), size => 60);
+       if (!$q->param("attachment")) {
+               # insert the standard extensions
+               my @page_types;
+               if (exists $IkiWiki::hooks{htmlize}) {
+                       @page_types=grep { !/^_/ }
+                               keys %{$IkiWiki::hooks{htmlize}};
+               }
+       
+               # make sure the current extension is in the list
+               my ($ext) = $pagesources{$page}=~/\.([^.]+)$/;
+               if (! $IkiWiki::hooks{htmlize}{$ext}) {
+                       unshift(@page_types, $ext);
+               }
+       
+               $f->field(name => "type", type => 'select',
+                       options => \@page_types,
+                       value => $ext, force => 1);
+               
+               foreach my $p (keys %pagesources) {
+                       if ($pagesources{$p}=~m/^\Q$page\E\//) {
+                               $f->field(name => "subpages",
+                                       label => "",
+                                       type => "checkbox",
+                                       options => [ [ 1 => gettext("Also rename SubPages and attachments") ] ],
+                                       value => 1,
+                                       force => 1);
+                               last;
+                       }
+               }
+       }
        $f->field(name => "attachment", type => "hidden");
 
        return $f, ["Rename", "Cancel"];
        $f->field(name => "attachment", type => "hidden");
 
        return $f, ["Rename", "Cancel"];
-} #}}}
+}
 
 sub rename_start ($$$$) {
        my $q=shift;
 
 sub rename_start ($$$$) {
        my $q=shift;
@@ -58,6 +174,9 @@ sub rename_start ($$$$) {
        my $attachment=shift;
        my $page=shift;
 
        my $attachment=shift;
        my $page=shift;
 
+       check_canrename($page, $pagesources{$page}, undef, undef,
+               $q, $session);
+
        # Save current form state to allow returning to it later
        # without losing any edits.
        # (But don't save what button was submitted, to avoid
        # Save current form state to allow returning to it later
        # without losing any edits.
        # (But don't save what button was submitted, to avoid
@@ -67,42 +186,57 @@ sub rename_start ($$$$) {
        $session->param(postrename => scalar $q->Vars);
        IkiWiki::cgi_savesession($session);
        
        $session->param(postrename => scalar $q->Vars);
        IkiWiki::cgi_savesession($session);
        
-       my ($f, $buttons)=rename_form($q, $session, $page);
        if (defined $attachment) {
        if (defined $attachment) {
-               $f->field(name => "attachment", value => $attachment, force => 1);
+               $q->param(-name => "attachment", -value => $attachment);
        }
        }
-       
+       my ($f, $buttons)=rename_form($q, $session, $page);
        IkiWiki::showform($f, $buttons, $session, $q);
        exit 0;
 }
 
        IkiWiki::showform($f, $buttons, $session, $q);
        exit 0;
 }
 
-sub postrename ($;$) {
+sub postrename ($;$$$) {
        my $session=shift;
        my $session=shift;
-       my $newname=shift;
+       my $src=shift;
+       my $dest=shift;
+       my $attachment=shift;
 
 
-       # Load saved form state and return to edit form.
+       # Load saved form state and return to edit page.
        my $postrename=CGI->new($session->param("postrename"));
        my $postrename=CGI->new($session->param("postrename"));
-       if (defined $newname) {
-               # They renamed the page they were editing.
-               # Tweak the edit form to be editing the new
-               # page name, and redirect back to it.
-               # (Deep evil here.)
-               error("don't know how to redir back!"); ## FIXME
-       }
        $session->clear("postrename");
        IkiWiki::cgi_savesession($session);
        $session->clear("postrename");
        IkiWiki::cgi_savesession($session);
-       IkiWiki::cgi($postrename, $session);
+
+       if (defined $dest) {
+               if (! $attachment) {
+                       # They renamed the page they were editing. This requires
+                       # fixups to the edit form state.
+                       # Tweak the edit form to be editing the new page.
+                       $postrename->param("page", $dest);
+               }
+
+               # Update edit form content to fix any links present
+               # on it.
+               $postrename->param("editcontent",
+                       renamelink_hook($dest, $src, $dest,
+                                $postrename->param("editcontent")));
+
+               # Get a new edit token; old was likely invalidated.
+               $postrename->param("rcsinfo",
+                       IkiWiki::rcs_prepedit($pagesources{$dest}));
+       }
+
+       IkiWiki::cgi_editpage($postrename, $session);
 }
 
 }
 
-sub formbuilder (@) { #{{{
+sub formbuilder (@) {
        my %params=@_;
        my $form=$params{form};
 
        my %params=@_;
        my $form=$params{form};
 
-       if (defined $form->field("do") && $form->field("do") eq "edit") {
+       if (defined $form->field("do") && ($form->field("do") eq "edit" ||
+           $form->field("do") eq "create")) {
                my $q=$params{cgi};
                my $session=$params{session};
 
                my $q=$params{cgi};
                my $session=$params{session};
 
-               if ($form->submitted eq "Rename") {
+               if ($form->submitted eq "Rename" && $form->field("do") eq "edit") {
                        rename_start($q, $session, 0, $form->field("page"));
                }
                elsif ($form->submitted eq "Rename Attachment") {
                        rename_start($q, $session, 0, $form->field("page"));
                }
                elsif ($form->submitted eq "Rename Attachment") {
@@ -116,9 +250,28 @@ sub formbuilder (@) { #{{{
                        rename_start($q, $session, 1, $selected[0]);
                }
        }
                        rename_start($q, $session, 1, $selected[0]);
                }
        }
-} #}}}
+}
+
+my $renamesummary;
+
+sub formbuilder_setup (@) {
+       my %params=@_;
+       my $form=$params{form};
+       my $q=$params{cgi};
+
+       if (defined $form->field("do") && ($form->field("do") eq "edit" ||
+           $form->field("do") eq "create")) {
+               # Rename button for the page, and also for attachments.
+               push @{$params{buttons}}, "Rename" if $form->field("do") eq "edit";
+               $form->tmpl_param("field-rename" => '<input name="_submit" type="submit" value="Rename Attachment" />');
+
+               if (defined $renamesummary) {
+                       $form->tmpl_param(message => $renamesummary);
+               }
+       }
+}
 
 
-sub sessioncgi ($$) { #{{{
+sub sessioncgi ($$) {
         my $q=shift;
 
        if ($q->param("do") eq 'rename') {
         my $q=shift;
 
        if ($q->param("do") eq 'rename') {
@@ -130,58 +283,157 @@ sub sessioncgi ($$) { #{{{
                        postrename($session);
                }
                elsif ($form->submitted eq 'Rename' && $form->validate) {
                        postrename($session);
                }
                elsif ($form->submitted eq 'Rename' && $form->validate) {
-                       my $page=$q->param("page");
-
-                       # This untaint is safe because of the checks below.
-                       my $file=IkiWiki::possibly_foolish_untaint($pagesources{$page});
+                       # Queue of rename actions to perfom.
+                       my @torename;
 
 
-                       # Must be a known source file.
-                       if (! defined $file) {
-                               error(sprintf(gettext("%s does not exist"),
-                               htmllink("", "", $page, noimageinline => 1)));
-                       }
+                       # These untaints are safe because of the checks
+                       # performed in check_canrename later.
+                       my $src=$q->param("page");
+                       my $srcfile=IkiWiki::possibly_foolish_untaint($pagesources{$src});
+                       my $dest=IkiWiki::possibly_foolish_untaint(titlepage($q->param("new_name")));
+                       my $destfile=$dest;
+                       if (! $q->param("attachment")) {
+                               my $type=$q->param('type');
+                               if (defined $type && length $type && $IkiWiki::hooks{htmlize}{$type}) {
+                                       $type=IkiWiki::possibly_foolish_untaint($type);
+                               }
+                               else {
+                                       my ($ext)=$srcfile=~/\.([^.]+)$/;
+                                       $type=$ext;
+                               }
                                
                                
-                       # Must be editiable.
-                       IkiWiki::check_canedit($page, $q, $session);
-
-                       # Must exist on disk, and be a regular file.
-                       if (! -e "$config{srcdir}/$file") {
-                               error(sprintf(gettext("%s is not in the srcdir, so it cannot be deleted"), $file));
-                       }
-                       elsif (-l "$config{srcdir}/$file" && ! -f _) {
-                               error(sprintf(gettext("%s is not a file"), $file));
+                               $destfile=newpagefile($dest, $type);
                        }
                        }
+                       push @torename, {
+                               src => $src,
+                               srcfile => $srcfile,
+                               dest => $dest,
+                               destfile => $destfile,
+                               required => 1,
+                       };
 
 
-                       # TODO: check attachment limits
+                       IkiWiki::run_hooks(rename => sub { shift->(\@torename, $q, $session); });
 
 
-                       my $dest=IkiWiki::titlepage($q->param("new_name"));
-                       # XXX TODO check $dest!
+                       # See if any subpages need to be renamed.
+                       if ($q->param("subpages") && $src ne $dest) {
+                               foreach my $p (keys %pagesources) {
+                                       next unless $pagesources{$p}=~m/^\Q$src\E\//;
+                                       # If indexpages is enabled, the
+                                       # srcfile should not be confused
+                                       # with a subpage.
+                                       next if $pagesources{$p} eq $srcfile;
 
 
-                       # Do rename, and update the wiki.
+                                       my $d=$pagesources{$p};
+                                       $d=~s/^\Q$src\E\//$dest\//;
+                                       push @torename, {
+                                               src => $p,
+                                               srcfile => $pagesources{$p},
+                                               dest => pagename($d),
+                                               destfile => $d,
+                                               required => 0,
+                                       };
+                               }
+                       }
+                       
                        require IkiWiki::Render;
                        require IkiWiki::Render;
+                       IkiWiki::disable_commit_hook() if $config{rcs};
+                       my %origpagesources=%pagesources;
+
+                       # First file renaming.
+                       foreach my $rename (@torename) {
+                               if ($rename->{required}) {
+                                       do_rename($rename, $q, $session);
+                               }
+                               else {
+                                       eval {do_rename($rename, $q, $session)};
+                                       if ($@) {
+                                               $rename->{error}=$@;
+                                               next;
+                                       }
+                               }
+
+                               # Temporarily tweak pagesources to point to
+                               # the renamed file, in case fixlinks needs
+                               # to edit it.
+                               $pagesources{$rename->{src}}=$rename->{destfile};
+                       }
+                       IkiWiki::rcs_commit_staged(
+                               sprintf(gettext("rename %s to %s"), $srcfile, $destfile),
+                               $session->param("name"), $ENV{REMOTE_ADDR}) if $config{rcs};
+
+                       # Then link fixups.
+                       foreach my $rename (@torename) {
+                               next if $rename->{src} eq $rename->{dest};
+                               next if $rename->{error};
+                               foreach my $p (fixlinks($rename, $session)) {
+                                       # map old page names to new
+                                       foreach my $r (@torename) {
+                                               next if $rename->{error};
+                                               if ($r->{src} eq $p) {
+                                                       $p=$r->{dest};
+                                                       last;
+                                               }
+                                       }
+                                       push @{$rename->{fixedlinks}}, $p;
+                               }
+                       }
+
+                       # Then refresh.
+                       %pagesources=%origpagesources;
                        if ($config{rcs}) {
                        if ($config{rcs}) {
-                               IkiWiki::disable_commit_hook();
-                               my $token=IkiWiki::rcs_prepedit($file);
-                               IkiWiki::rcs_rename($file, $dest);
-                               IkiWiki::rcs_commit($file, gettext("rename $file to $dest"),
-                                       $token, $session->param("name"), $ENV{REMOTE_ADDR});
                                IkiWiki::enable_commit_hook();
                                IkiWiki::rcs_update();
                        }
                                IkiWiki::enable_commit_hook();
                                IkiWiki::rcs_update();
                        }
-                       else {
-                               if (! rename("$config{srcdir}/$file", "$config{srcdir}/$dest")) {
-                                       error("rename: $!");
-                               }
-                       }
                        IkiWiki::refresh();
                        IkiWiki::saveindex();
 
                        IkiWiki::refresh();
                        IkiWiki::saveindex();
 
-                       if ($q->param("attachment")) {
-                               postrename($session);
+                       # Find pages with remaining, broken links.
+                       foreach my $rename (@torename) {
+                               next if $rename->{src} eq $rename->{dest};
+                               
+                               foreach my $page (keys %links) {
+                                       my $broken=0;
+                                       foreach my $link (@{$links{$page}}) {
+                                               my $bestlink=bestlink($page, $link);
+                                               if ($bestlink eq $rename->{src}) {
+                                                       push @{$rename->{brokenlinks}}, $page;
+                                                       last;
+                                               }
+                                       }
+                               }
                        }
                        }
-                       else {
-                               postrename($session, $dest);
+
+                       # Generate a summary, that will be shown at the top
+                       # of the edit template.
+                       $renamesummary="";
+                       foreach my $rename (@torename) {
+                               my $template=template("renamesummary.tmpl");
+                               $template->param(src => $rename->{srcfile});
+                               $template->param(dest => $rename->{destfile});
+                               $template->param(error => $rename->{error});
+                               if ($rename->{src} ne $rename->{dest}) {
+                                       $template->param(brokenlinks_checked => 1);
+                                       $template->param(brokenlinks => [
+                                               map {
+                                                       {
+                                                               page => htmllink($rename->{dest}, $rename->{dest}, $_,
+                                                                               noimageinline => 1)
+                                                       }
+                                               } @{$rename->{brokenlinks}}
+                                       ]);
+                                       $template->param(fixedlinks => [
+                                               map {
+                                                       {
+                                                               page => htmllink($rename->{dest}, $rename->{dest}, $_,
+                                                                               noimageinline => 1)
+                                                       }
+                                               } @{$rename->{fixedlinks}}
+                                       ]);
+                               }
+                               $renamesummary.=$template->output;
                        }
                        }
+
+                       postrename($session, $src, $dest, $q->param("attachment"));
                }
                else {
                        IkiWiki::showform($form, $buttons, $session, $q);
                }
                else {
                        IkiWiki::showform($form, $buttons, $session, $q);
@@ -191,4 +443,84 @@ sub sessioncgi ($$) { #{{{
        }
 }
 
        }
 }
 
+sub renamelink_hook ($$$$) {
+       my ($page, $src, $dest, $content)=@_;
+
+       IkiWiki::run_hooks(renamelink => sub {
+               $content=shift->(
+                       page => $page,
+                       oldpage => $src,
+                       newpage => $dest,
+                       content => $content,
+               );
+       });
+
+       return $content;
+}
+                       
+sub do_rename ($$$) {
+       my $rename=shift;
+       my $q=shift;
+       my $session=shift;
+
+       # First, check if this rename is allowed.
+       check_canrename($rename->{src},
+               $rename->{srcfile},
+               $rename->{dest},
+               $rename->{destfile},
+               $q, $session);
+
+       # Ensure that the dest directory exists and is ok.
+       IkiWiki::prep_writefile($rename->{destfile}, $config{srcdir});
+
+       if ($config{rcs}) {
+               IkiWiki::rcs_rename($rename->{srcfile}, $rename->{destfile});
+       }
+       else {
+               if (! rename($config{srcdir}."/".$rename->{srcfile},
+                            $config{srcdir}."/".$rename->{destfile})) {
+                       error("rename: $!");
+               }
+       }
+
+}
+
+sub fixlinks ($$$) {
+       my $rename=shift;
+       my $session=shift;
+
+       my @fixedlinks;
+
+       foreach my $page (keys %links) {
+               my $needfix=0;
+               foreach my $link (@{$links{$page}}) {
+                       my $bestlink=bestlink($page, $link);
+                       if ($bestlink eq $rename->{src}) {
+                               $needfix=1;
+                               last;
+                       }
+               }
+               if ($needfix) {
+                       my $file=$pagesources{$page};
+                       my $oldcontent=readfile($config{srcdir}."/".$file);
+                       my $content=renamelink_hook($page, $rename->{src}, $rename->{dest}, $oldcontent);
+                       if ($oldcontent ne $content) {
+                               my $token=IkiWiki::rcs_prepedit($file);
+                               eval { writefile($file, $config{srcdir}, $content) };
+                               next if $@;
+                               my $conflict=IkiWiki::rcs_commit(
+                                       $file,
+                                       sprintf(gettext("update for rename of %s to %s"), $rename->{srcfile}, $rename->{destfile}),
+                                       $token,
+                                       $session->param("name"), 
+                                       $ENV{REMOTE_ADDR}
+                               );
+                               push @fixedlinks, $page if ! defined $conflict;
+                       }
+               }
+       }
+
+       return @fixedlinks;
+}
+
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Unnamed repository; edit this file 'description' to name the repository.