ikiwiki/IkiWiki/Plugin/rename.pm

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#!/usr/bin/perl
package IkiWiki::Plugin::rename;
use warnings;
use strict;
use IkiWiki 3.00;
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sub import {
hook(type => "getsetup", id => "rename", call => \&getsetup);
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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 => "rename", id => "rename", call => \&rename_subpages);
}
sub getsetup () {
return
plugin => {
safe => 1,
rebuild => 0,
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section => "web",
},
}
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sub check_canrename ($$$$$$) {
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my $src=shift;
my $srcfile=shift;
my $dest=shift;
my $destfile=shift;
my $q=shift;
my $session=shift;
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my $attachment=! defined pagetype($pagesources{$src});
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# 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, "$config{srcdir}/$srcfile");
}
else {
error("renaming of attachments is not allowed");
}
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}
# Dest checks can be omitted by passing undef.
if (defined $dest) {
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if ($srcfile eq $destfile) {
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error(gettext("no change to the file name was specified"));
}
# Must be a legal filename.
if (IkiWiki::file_pruned($destfile)) {
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error(sprintf(gettext("illegal name")));
}
# Must not be a known source file.
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if ($src ne $dest && exists $pagesources{$dest}) {
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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, "$config{srcdir}/$srcfile");
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}
}
my $canrename;
IkiWiki::run_hooks(canrename => sub {
return if defined $canrename;
my $ret=shift->(cgi => $q, session => $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 defined $canrename ? $canrename : 1;
}
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sub rename_form ($$$) {
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my $q=shift;
my $session=shift;
my $page=shift;
eval q{use CGI::FormBuilder};
error($@) if $@;
my $f = CGI::FormBuilder->new(
name => "rename",
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title => sprintf(gettext("rename %s"), pagetitle($page)),
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header => 0,
charset => "utf-8",
method => 'POST',
javascript => 0,
params => $q,
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action => IkiWiki::cgiurl(),
stylesheet => 1,
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fields => [qw{do page new_name attachment}],
);
$f->field(name => "do", type => "hidden", value => "rename", force => 1);
$f->field(name => "sid", type => "hidden", value => $session->id,
force => 1);
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$f->field(name => "page", type => "hidden", value => $page, force => 1);
$f->field(name => "new_name", value => pagetitle($page, 1), size => 60);
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if (!$q->param("attachment")) {
# insert the standard extensions
my @page_types;
if (exists $IkiWiki::hooks{htmlize}) {
foreach my $key (grep { !/^_/ } keys %{$IkiWiki::hooks{htmlize}}) {
push @page_types, [$key, $IkiWiki::hooks{htmlize}{$key}{longname} || $key];
}
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}
@page_types=sort @page_types;
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# make sure the current extension is in the list
my ($ext) = $pagesources{$page}=~/\.([^.]+)$/;
if (! $IkiWiki::hooks{htmlize}{$ext}) {
unshift(@page_types, [$ext, $ext]);
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}
$f->field(name => "type", type => 'select',
options => \@page_types,
value => $ext, force => 1);
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foreach my $p (keys %pagesources) {
if ($pagesources{$p}=~m/^\Q$page\E\//) {
$f->field(name => "subpages",
label => "",
type => "checkbox",
options => [ [ 1 => gettext("Also rename SubPages and attachments") ] ],
value => 1,
force => 1);
last;
}
}
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}
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$f->field(name => "attachment", type => "hidden");
return $f, ["Rename", "Cancel"];
}
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sub rename_start ($$$$) {
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my $q=shift;
my $session=shift;
my $attachment=shift;
my $page=shift;
# Special case for renaming held attachments; normal checks
# don't apply.
my $held=$attachment &&
IkiWiki::Plugin::attachment->can("is_held_attachment") &&
IkiWiki::Plugin::attachment::is_held_attachment($page);
if (! $held) {
check_canrename($page, $pagesources{$page}, undef, undef,
$q, $session);
}
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# Save current form state to allow returning to it later
# without losing any edits.
# (But don't save what button was submitted, to avoid
# looping back to here.)
# Note: "_submit" is CGI::FormBuilder internals.
$q->param(-name => "_submit", -value => "");
$session->param(postrename => scalar $q->Vars);
IkiWiki::cgi_savesession($session);
if (defined $attachment) {
$q->param(-name => "attachment", -value => $attachment);
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}
my ($f, $buttons)=rename_form($q, $session, $page);
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IkiWiki::showform($f, $buttons, $session, $q);
exit 0;
}
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sub postrename ($$$;$$) {
my $cgi=shift;
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my $session=shift;
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my $src=shift;
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my $dest=shift;
my $attachment=shift;
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# Load saved form state and return to edit page, using stored old
# cgi state. Or, if the rename was not started on the edit page,
# return to the renamed page.
my $postrename=$session->param("postrename");
if (! defined $postrename) {
IkiWiki::redirect($cgi, urlto(defined $dest ? $dest : $src));
exit;
}
my $oldcgi=CGI->new($postrename);
$session->clear("postrename");
IkiWiki::cgi_savesession($session);
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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.
$oldcgi->param("page", $dest);
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}
# Update edit form content to fix any links present
# on it.
$oldcgi->param("editcontent",
renamepage_hook($dest, $src, $dest,
$oldcgi->param("editcontent")));
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# Get a new edit token; old was likely invalidated.
$oldcgi->param("rcsinfo",
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IkiWiki::rcs_prepedit($pagesources{$dest}));
}
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IkiWiki::cgi_editpage($oldcgi, $session);
}
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sub formbuilder (@) {
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my %params=@_;
my $form=$params{form};
if (defined $form->field("do") && ($form->field("do") eq "edit" ||
$form->field("do") eq "create")) {
IkiWiki::decode_form_utf8($form);
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my $q=$params{cgi};
my $session=$params{session};
if ($form->submitted eq "Rename" && $form->field("do") eq "edit") {
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rename_start($q, $session, 0, $form->field("page"));
}
elsif ($form->submitted eq "Rename Attachment") {
my @selected=map { Encode::decode_utf8($_) } $q->param("attachment_select");
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if (@selected > 1) {
error(gettext("Only one attachment can be renamed at a time."));
}
elsif (! @selected) {
error(gettext("Please select the attachment to rename."))
}
rename_start($q, $session, 1, $selected[0]);
}
}
}
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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 ($$) {
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my $q=shift;
if ($q->param("do") eq 'rename') {
my $session=shift;
my ($form, $buttons)=rename_form($q, $session, Encode::decode_utf8($q->param("page")));
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IkiWiki::decode_form_utf8($form);
my $src=$form->field("page");
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if ($form->submitted eq 'Cancel') {
postrename($q, $session, $src);
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}
elsif ($form->submitted eq 'Rename' && $form->validate) {
IkiWiki::checksessionexpiry($q, $session, $q->param('sid'));
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# These untaints are safe because of the checks
# performed in check_canrename later.
my $srcfile=IkiWiki::possibly_foolish_untaint($pagesources{$src})
if exists $pagesources{$src};
my $dest=IkiWiki::possibly_foolish_untaint(titlepage($form->field("new_name")));
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my $destfile=$dest;
if (! $q->param("attachment")) {
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my $type=$q->param('type');
if (defined $type && length $type && $IkiWiki::hooks{htmlize}{$type}) {
$type=IkiWiki::possibly_foolish_untaint($type);
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}
else {
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my ($ext)=$srcfile=~/\.([^.]+)$/;
$type=$ext;
}
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$destfile=newpagefile($dest, $type);
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}
# Special case for renaming held attachments.
my $held=$q->param("attachment") &&
IkiWiki::Plugin::attachment->can("is_held_attachment") &&
IkiWiki::Plugin::attachment::is_held_attachment($src);
if ($held) {
rename($held, IkiWiki::Plugin::attachment::attachment_holding_location($dest));
postrename($q, $session, $src, $dest, $q->param("attachment"))
unless defined $srcfile;
}
# Queue of rename actions to perfom.
my @torename;
push @torename, {
src => $src,
srcfile => $srcfile,
dest => $dest,
destfile => $destfile,
required => 1,
};
@torename=rename_hook(
torename => \@torename,
done => {},
cgi => $q,
session => $session,
);
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require IkiWiki::Render;
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IkiWiki::disable_commit_hook() if $config{rcs};
my %origpagesources=%pagesources;
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# 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;
}
}
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# Temporarily tweak pagesources to point to
# the renamed file, in case fixlinks needs
# to edit it.
$pagesources{$rename->{src}}=$rename->{destfile};
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}
IkiWiki::rcs_commit_staged(
message => sprintf(gettext("rename %s to %s"), $srcfile, $destfile),
session => $session,
) 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}}, $p;
}
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}
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# Then refresh.
%pagesources=%origpagesources;
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if ($config{rcs}) {
IkiWiki::enable_commit_hook();
IkiWiki::rcs_update();
}
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IkiWiki::refresh();
IkiWiki::saveindex();
# 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;
}
}
}
}
# 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}) {
$template->param(brokenlinks_checked => 1);
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$template->param(brokenlinks => linklist($rename->{dest}, $rename->{brokenlinks}));
$template->param(fixedlinks => linklist($rename->{dest}, $rename->{fixedlinks}));
}
$renamesummary.=$template->output;
}
postrename($q, $session, $src, $dest, $q->param("attachment"));
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}
else {
IkiWiki::showform($form, $buttons, $session, $q);
}
exit 0;
}
}
# Add subpages to the list of pages to be renamed, if needed.
sub rename_subpages (@) {
my %params = @_;
my %torename = %{$params{torename}};
my $q = $params{cgi};
my $src = $torename{src};
my $srcfile = $torename{src};
my $dest = $torename{dest};
my $destfile = $torename{dest};
return () unless ($q->param("subpages") && $src ne $dest);
my @ret;
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;
my $d=$pagesources{$p};
$d=~s/^\Q$src\E\//$dest\//;
push @ret, {
src => $p,
srcfile => $pagesources{$p},
dest => pagename($d),
destfile => $d,
required => 0,
};
}
return @ret;
}
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sub linklist {
# generates a list of links in a form suitable for FormBuilder
my $dest=shift;
my $list=shift;
# converts a list of pages into a list of links
# in a form suitable for FormBuilder.
[map {
{
page => htmllink($dest, $dest, $_,
noimageinline => 1,
linktext => pagetitle($_),
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)
}
} @{$list}]
}
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sub renamepage_hook ($$$$) {
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my ($page, $src, $dest, $content)=@_;
IkiWiki::run_hooks(renamepage => sub {
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$content=shift->(
page => $page,
oldpage => $src,
newpage => $dest,
content => $content,
);
});
return $content;
}
sub rename_hook {
my %params = @_;
my @torename=@{$params{torename}};
my %done=%{$params{done}};
my $q=$params{cgi};
my $session=$params{session};
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return () unless @torename;
my @nextset;
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foreach my $torename (@torename) {
unless (exists $done{$torename->{src}} && $done{$torename->{src}}) {
IkiWiki::run_hooks(rename => sub {
push @nextset, shift->(
torename => $torename,
cgi => $q,
session => $session,
);
});
$done{$torename->{src}}=1;
}
}
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push @torename, rename_hook(
torename => \@nextset,
done => \%done,
cgi => $q,
session => $session,
);
# dedup
my %seen;
return grep { ! $seen{$_->{src}}++ } @torename;
}
sub do_rename ($$$) {
my $rename=shift;
my $q=shift;
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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}, $config{srcdir});
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if ($config{rcs}) {
IkiWiki::rcs_rename($rename->{srcfile}, $rename->{destfile});
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}
else {
if (! rename($config{srcdir}."/".$rename->{srcfile},
$config{srcdir}."/".$rename->{destfile})) {
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error("rename: $!");
}
}
}
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sub fixlinks ($$$) {
my $rename=shift;
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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 $rename->{src}) {
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$needfix=1;
last;
}
}
if ($needfix) {
my $file=$pagesources{$page};
next unless -e $config{srcdir}."/".$file;
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my $oldcontent=readfile($config{srcdir}."/".$file);
my $content=renamepage_hook($page, $rename->{src}, $rename->{dest}, $oldcontent);
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if ($oldcontent ne $content) {
my $token=IkiWiki::rcs_prepedit($file);
eval { writefile($file, $config{srcdir}, $content) };
next if $@;
my $conflict=IkiWiki::rcs_commit(
file => $file,
message => sprintf(gettext("update for rename of %s to %s"), $rename->{srcfile}, $rename->{destfile}),
token => $token,
session => $session,
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);
push @fixedlinks, $page if ! defined $conflict;
}
}
}
return @fixedlinks;
}
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