po: mark po_translatable_pages as a safe configuration setting

[git.ikiwiki.info.git] / IkiWiki / Plugin / po.pm

diff --git a/IkiWiki/Plugin/po.pm b/IkiWiki/Plugin/po.pm
index 997f17fb39cee9060df1f926aa51f856f2f4c03f..3b92583a196410e11e53ee5c15cc80358a96d74e 100644 (file)
--- a/IkiWiki/Plugin/po.pm
+++ b/IkiWiki/Plugin/po.pm
@@ -1,5 +1,7 @@
 #!/usr/bin/perl
 # .po as a wiki page type
 #!/usr/bin/perl
 # .po as a wiki page type

+# Licensed under GPL v2 or greater
+# Copyright (C) 2008 intrigeri <intrigeri@boum.org>

 # inspired by the GPL'd po4a-translate,
 # which is Copyright 2002, 2003, 2004 by Martin Quinson (mquinson#debian.org)
 package IkiWiki::Plugin::po;
 # inspired by the GPL'd po4a-translate,
 # which is Copyright 2002, 2003, 2004 by Martin Quinson (mquinson#debian.org)
 package IkiWiki::Plugin::po;


@@ -9,30 +11,48 @@ use strict;
 use IkiWiki 2.00;
 use Encode;
 use Locale::Po4a::Chooser;
 use IkiWiki 2.00;
 use Encode;
 use Locale::Po4a::Chooser;

+use Locale::Po4a::Po;
+use File::Basename;
+use File::Copy;
+use File::Spec;

 use File::Temp;
 use Memoize;
 
 my %translations;
 use File::Temp;
 use Memoize;
 
 my %translations;

-memoize("istranslatable");
+our %filtered;
+

 memoize("_istranslation");
 memoize("_istranslation");

+memoize("percenttranslated");
+# FIXME: memoizing istranslatable() makes some test cases fail once every
+# two tries; this may be related to the artificial way the testsuite is
+# run, or not.
+# memoize("istranslatable");
+
+# backup references to subs that will be overriden
+my %origsubs;

 
 

-sub import {
+sub import { #{{{

        hook(type => "getsetup", id => "po", call => \&getsetup);
        hook(type => "checkconfig", id => "po", call => \&checkconfig);
        hook(type => "needsbuild", id => "po", call => \&needsbuild);
        hook(type => "getsetup", id => "po", call => \&getsetup);
        hook(type => "checkconfig", id => "po", call => \&checkconfig);
        hook(type => "needsbuild", id => "po", call => \&needsbuild);

-       hook(type => "targetpage", id => "po", call => \&targetpage);
-       hook(type => "tweakurlpath", id => "po", call => \&tweakurlpath);
-       hook(type => "tweakbestlink", id => "po", call => \&tweakbestlink);

        hook(type => "filter", id => "po", call => \&filter);
        hook(type => "htmlize", id => "po", call => \&htmlize);
        hook(type => "filter", id => "po", call => \&filter);
        hook(type => "htmlize", id => "po", call => \&htmlize);

-       hook(type => "pagetemplate", id => "po", call => \&pagetemplate);
-}
+       hook(type => "pagetemplate", id => "po", call => \&pagetemplate, last => 1);
+       hook(type => "editcontent", id => "po", call => \&editcontent);
+
+       $origsubs{'bestlink'}=\&IkiWiki::bestlink;
+       inject(name => "IkiWiki::bestlink", call => \&mybestlink);
+       $origsubs{'beautify_urlpath'}=\&IkiWiki::beautify_urlpath;
+       inject(name => "IkiWiki::beautify_urlpath", call => \&mybeautify_urlpath);
+       $origsubs{'targetpage'}=\&IkiWiki::targetpage;
+       inject(name => "IkiWiki::targetpage", call => \&mytargetpage);
+} #}}}

 
 sub getsetup () { #{{{
        return
                plugin => {
                        safe => 0,
 
 sub getsetup () { #{{{
        return
                plugin => {
                        safe => 0,

-                       rebuild => 1, # format plugin
+                       rebuild => 1, # format plugin & changes html filenames

                },
                po_master_language => {
                        type => "string",
                },
                po_master_language => {
                        type => "string",


@@ -67,24 +87,33 @@ sub getsetup () { #{{{
                        type => "string",
                        example => "current",
                        description => "internal linking behavior (default/current/negotiated)",
                        type => "string",
                        example => "current",
                        description => "internal linking behavior (default/current/negotiated)",

-                       safe => 1,
+                       safe => 0,

                        rebuild => 1,
                },
 } #}}}
 
                        rebuild => 1,
                },
 } #}}}
 

+sub islanguagecode ($) { #{{{
+    my $code=shift;
+    return ($code =~ /^[a-z]{2}$/);
+} #}}}
+

 sub checkconfig () { #{{{
        foreach my $field (qw{po_master_language po_slave_languages}) {
                if (! exists $config{$field} || ! defined $config{$field}) {
                        error(sprintf(gettext("Must specify %s"), $field));
                }
        }
 sub checkconfig () { #{{{
        foreach my $field (qw{po_master_language po_slave_languages}) {
                if (! exists $config{$field} || ! defined $config{$field}) {
                        error(sprintf(gettext("Must specify %s"), $field));
                }
        }

+       map {
+               islanguagecode($_)
+                   or error(sprintf(gettext("%s is not a valid language code"), $_));
+       } ($config{po_master_language}{code}, keys %{$config{po_slave_languages}});

        if (! exists $config{po_link_to} ||
            ! defined $config{po_link_to}) {
        if (! exists $config{po_link_to} ||
            ! defined $config{po_link_to}) {

-           $config{po_link_to}="default";
+               $config{po_link_to}="default";

        }
        if (! exists $config{po_translatable_pages} ||
            ! defined $config{po_translatable_pages}) {
        }
        if (! exists $config{po_translatable_pages} ||
            ! defined $config{po_translatable_pages}) {

-           $config{po_translatable_pages}="";
+               $config{po_translatable_pages}="";

        }
        if ($config{po_link_to} eq "negotiated" && ! $config{usedirs}) {
                error(gettext("po_link_to=negotiated requires usedirs to be set"));
        }
        if ($config{po_link_to} eq "negotiated" && ! $config{usedirs}) {
                error(gettext("po_link_to=negotiated requires usedirs to be set"));


@@ -92,6 +121,63 @@ sub checkconfig () { #{{{
        push @{$config{wiki_file_prune_regexps}}, qr/\.pot$/;
 } #}}}
 
        push @{$config{wiki_file_prune_regexps}}, qr/\.pot$/;
 } #}}}
 

+sub potfile ($) { #{{{
+       my $masterfile=shift;
+
+       (my $name, my $dir, my $suffix) = fileparse($masterfile, qr/\.[^.]*/);
+       $dir='' if $dir eq './';
+       return File::Spec->catpath('', $dir, $name . ".pot");
+} #}}}
+
+sub pofile ($$) { #{{{
+       my $masterfile=shift;
+       my $lang=shift;
+
+       (my $name, my $dir, my $suffix) = fileparse($masterfile, qr/\.[^.]*/);
+       $dir='' if $dir eq './';
+       return File::Spec->catpath('', $dir, $name . "." . $lang . ".po");
+} #}}}
+
+sub refreshpot ($) { #{{{
+       my $masterfile=shift;
+
+       my $potfile=potfile($masterfile);
+       my %options = ("markdown" => (pagetype($masterfile) eq 'mdwn') ? 1 : 0);
+       my $doc=Locale::Po4a::Chooser::new('text',%options);
+       $doc->read($masterfile);
+       $doc->{TT}{utf_mode} = 1;
+       $doc->{TT}{file_in_charset} = 'utf-8';
+       $doc->{TT}{file_out_charset} = 'utf-8';
+       # let's cheat a bit to force porefs option to be passed to Locale::Po4a::Po;
+       # this is undocument use of internal Locale::Po4a::TransTractor's data,
+       # compulsory since this module prevents us from using the porefs option.
+       my %po_options = ('porefs' => 'none');
+       $doc->{TT}{po_out}=Locale::Po4a::Po->new(\%po_options);
+       $doc->{TT}{po_out}->set_charset('utf-8');
+       # do the actual work
+       $doc->parse;
+       $doc->writepo($potfile);
+} #}}}
+
+sub refreshpofiles ($@) { #{{{
+       my $masterfile=shift;
+       my @pofiles=@_;
+
+       my $potfile=potfile($masterfile);
+       error("[po/refreshpofiles] POT file ($potfile) does not exist") unless (-e $potfile);
+
+       foreach my $pofile (@pofiles) {
+               if (-e $pofile) {
+                       system("msgmerge", "-U", "--backup=none", $pofile, $potfile) == 0
+                               or error("[po/refreshpofiles:$pofile] failed to update");
+               }
+               else {
+                       File::Copy::syscopy($potfile,$pofile)
+                               or error("[po/refreshpofiles:$pofile] failed to copy the POT file");
+               }
+       }
+} #}}}
+

 sub needsbuild () { #{{{
        my $needsbuild=shift;
 
 sub needsbuild () { #{{{
        my $needsbuild=shift;
 


@@ -100,16 +186,67 @@ sub needsbuild () { #{{{
                istranslation($page);
        }
 
                istranslation($page);
        }
 

+       # refresh/create POT and PO files as needed
+       my $updated_po_files=0;
+       foreach my $page (keys %pagesources) {
+               if (istranslatable($page)) {
+                       my $pageneedsbuild = grep { $_ eq $pagesources{$page} } @$needsbuild;
+                       my $updated_pot_file=0;
+                       my $file=srcfile($pagesources{$page});
+                       if ($pageneedsbuild || ! -e potfile($file)) {
+                               refreshpot($file);
+                               $updated_pot_file=1;
+                       }
+                       my @pofiles;
+                       foreach my $lang (keys %{$config{po_slave_languages}}) {
+                               my $pofile=pofile($file, $lang);
+                               my $pofile_rel=pofile($pagesources{$page}, $lang);
+                               if ($pageneedsbuild || $updated_pot_file || ! -e $pofile) {
+                                       push @pofiles, $pofile;
+                                       push @$needsbuild, $pofile_rel
+                                         unless grep { $_ eq $pofile_rel } @$needsbuild;
+                               }
+                       }
+                       if (@pofiles) {
+                               refreshpofiles($file, @pofiles) ;
+                               map { IkiWiki::rcs_add($_); } @pofiles if ($config{rcs});
+                               $updated_po_files = 1;
+                       }
+               }
+       }
+
+       # check staged changes in
+       if ($updated_po_files) {
+               if ($config{rcs}) {
+                       IkiWiki::disable_commit_hook();
+                       IkiWiki::rcs_commit_staged(gettext("updated PO files"),
+                               "refreshpofiles", "127.0.0.1");
+                       IkiWiki::enable_commit_hook();
+                       IkiWiki::rcs_update();
+               }
+               # refresh module's private variables
+               undef %filtered;
+               undef %translations;
+               foreach my $page (keys %pagesources) {
+                       istranslation($page);
+               }
+       }
+
+       # make existing translations depend on the corresponding master page
+       foreach my $master (keys %translations) {
+               foreach my $slave (values %{$translations{$master}}) {
+                       add_depends($slave, $master);
+               }
+       }

 } #}}}
 
 } #}}}
 

-sub targetpage (@) { #{{{
-       my %params = @_;
-        my $page=$params{page};
-        my $ext=$params{ext};
+sub mytargetpage ($$) { #{{{
+       my $page=shift;
+       my $ext=shift;

 
        if (istranslation($page)) {
                my ($masterpage, $lang) = ($page =~ /(.*)[.]([a-z]{2})$/);
 
        if (istranslation($page)) {
                my ($masterpage, $lang) = ($page =~ /(.*)[.]([a-z]{2})$/);

-               if (! $config{usedirs} || $page eq 'index') {
+               if (! $config{usedirs} || $masterpage eq 'index') {

                        return $masterpage . "." . $lang . "." . $ext;
                }
                else {
                        return $masterpage . "." . $lang . "." . $ext;
                }
                else {


@@ -124,73 +261,115 @@ sub targetpage (@) { #{{{
                        return $page . "/index." . $config{po_master_language}{code} . "." . $ext;
                }
        }
                        return $page . "/index." . $config{po_master_language}{code} . "." . $ext;
                }
        }

-       return;
+       return $origsubs{'targetpage'}->($page, $ext);

 } #}}}
 
 } #}}}
 

-sub tweakurlpath ($) { #{{{
-       my %params = @_;
-       my $url=$params{url};
+sub mybeautify_urlpath ($) { #{{{
+       my $url=shift;
+
+       my $res=$origsubs{'beautify_urlpath'}->($url);

        if ($config{po_link_to} eq "negotiated") {
        if ($config{po_link_to} eq "negotiated") {

-               $url =~ s!/index.$config{po_master_language}{code}.$config{htmlext}$!/!;
+               $res =~ s!/\Qindex.$config{po_master_language}{code}.$config{htmlext}\E$!/!;

        }
        }

-       return $url;
+       return $res;

 } #}}}
 
 } #}}}
 

-sub tweakbestlink ($$) { #{{{
-       my %params = @_;
-       my $page=$params{page};
-       my $link=$params{link};
-       if ($config{po_link_to} eq "current"
-           && istranslatable($link)
-           && istranslation($page)) {
-               my ($masterpage, $curlang) = ($page =~ /(.*)[.]([a-z]{2})$/);
-               return $link . "." . $curlang;
+sub urlto_with_orig_beautiful_urlpath($$) { #{{{
+       my $to=shift;
+       my $from=shift;
+
+       inject(name => "IkiWiki::beautify_urlpath", call => $origsubs{'beautify_urlpath'});
+       my $res=urlto($to, $from);
+       inject(name => "IkiWiki::beautify_urlpath", call => \&mybeautify_urlpath);
+
+       return $res;
+} #}}}
+
+sub mybestlink ($$) { #{{{
+       my $page=shift;
+       my $link=shift;
+
+       my $res=$origsubs{'bestlink'}->($page, $link);
+       if (length $res) {
+               if ($config{po_link_to} eq "current"
+                   && istranslatable($res)
+                   && istranslation($page)) {
+                       my ($masterpage, $curlang) = ($page =~ /(.*)[.]([a-z]{2})$/);
+                       return $res . "." . $curlang;
+               }
+               else {
+                       return $res;
+               }

        }
        }

-       return $link;
+       return "";

 } #}}}
 
 } #}}}
 

-our %filtered;
-# We use filter to convert PO to the master page's type,
-# since other plugins should not work on PO files
+# We use filter to convert PO to the master page's format,
+# since the rest of ikiwiki should not work on PO files.

 sub filter (@) { #{{{
        my %params = @_;
 sub filter (@) { #{{{
        my %params = @_;

+

        my $page = $params{page};
        my $destpage = $params{destpage};
        my $content = decode_utf8(encode_utf8($params{content}));
 
        my $page = $params{page};
        my $destpage = $params{destpage};
        my $content = decode_utf8(encode_utf8($params{content}));
 

-       # decide if this is a PO file that should be converted into a translated document,
-       # and perform various sanity checks
-       if (! istranslation($page) || $filtered{$page}{$destpage}) {
-               return $content;
-       }
+       return $content if ( ! istranslation($page)
+                            || ( exists $filtered{$page}{$destpage}
+                                 && $filtered{$page}{$destpage} eq 1 ));
+
+       # CRLF line terminators make poor Locale::Po4a feel bad
+       $content=~s/\r\n/\n/g;
+
+       # Implementation notes
+       #
+       # 1. Locale::Po4a reads/writes from/to files, and I'm too lazy
+       #    to learn how to disguise a variable as a file.
+       # 2. There are incompatibilities between some File::Temp versions
+       #    (including 0.18, bundled with Lenny's perl-modules package)
+       #    and others (e.g. 0.20, previously present in the archive as
+       #    a standalone package): under certain circumstances, some
+       #    return a relative filename, whereas others return an absolute one;
+       #    we here use this module in a way that is at least compatible
+       #    with 0.18 and 0.20. Beware, hit'n'run refactorers!
+       my $infile = new File::Temp(TEMPLATE => "ikiwiki-po-filter-in.XXXXXXXXXX",
+                                   DIR => File::Spec->tmpdir,
+                                   UNLINK => 1)->filename;
+       my $outfile = new File::Temp(TEMPLATE => "ikiwiki-po-filter-out.XXXXXXXXXX",
+                                    DIR => File::Spec->tmpdir,
+                                    UNLINK => 1)->filename;
+
+       writefile(basename($infile), File::Spec->tmpdir, $content);

 
        my ($masterpage, $lang) = ($page =~ /(.*)[.]([a-z]{2})$/);
 
        my ($masterpage, $lang) = ($page =~ /(.*)[.]([a-z]{2})$/);

-       my $file=srcfile(exists $params{file} ? $params{file} : $IkiWiki::pagesources{$page});

        my $masterfile = srcfile($pagesources{$masterpage});
        my (@pos,@masters);
        my $masterfile = srcfile($pagesources{$masterpage});
        my (@pos,@masters);

-       push @pos,$file;
+       push @pos,$infile;

        push @masters,$masterfile;
        my %options = (
        push @masters,$masterfile;
        my %options = (

-                       "markdown" => (pagetype($masterfile) eq 'mdwn') ? 1 : 0,
-                       );
+               "markdown" => (pagetype($masterfile) eq 'mdwn') ? 1 : 0,
+       );

        my $doc=Locale::Po4a::Chooser::new('text',%options);
        $doc->process(
                'po_in_name'    => \@pos,
                'file_in_name'  => \@masters,
                'file_in_charset'  => 'utf-8',
                'file_out_charset' => 'utf-8',
        my $doc=Locale::Po4a::Chooser::new('text',%options);
        $doc->process(
                'po_in_name'    => \@pos,
                'file_in_name'  => \@masters,
                'file_in_charset'  => 'utf-8',
                'file_out_charset' => 'utf-8',

-       ) or error("[po/filter:$file]: failed to translate");
-       my ($percent,$hit,$queries) = $doc->stats();
-       my $tmpfh = File::Temp->new(TEMPLATE => "/tmp/ikiwiki-po-filter-out.XXXXXXXXXX");
-       my $tmpout = $tmpfh->filename;
-       $doc->write($tmpout) or error("[po/filter:$file] could not write $tmpout");
-       $content = readfile($tmpout) or error("[po/filter:$file] could not read $tmpout");
+       ) or error("[po/filter:$infile]: failed to translate");
+       $doc->write($outfile) or error("[po/filter:$infile] could not write $outfile");
+       $content = readfile($outfile) or error("[po/filter:$infile] could not read $outfile");
+
+       # Unlinking should happen automatically, thanks to File::Temp,
+       # but it does not work here, probably because of the way writefile()
+       # and Locale::Po4a::write() work.
+       unlink $infile, $outfile;
+

        $filtered{$page}{$destpage}=1;
        return $content;
 } #}}}
 
 sub htmlize (@) { #{{{
        my %params=@_;
        $filtered{$page}{$destpage}=1;
        return $content;
 } #}}}
 
 sub htmlize (@) { #{{{
        my %params=@_;

+

        my $page = $params{page};
        my $content = $params{content};
        my ($masterpage, $lang) = ($page =~ /(.*)[.]([a-z]{2})$/);
        my $page = $params{page};
        my $content = $params{content};
        my ($masterpage, $lang) = ($page =~ /(.*)[.]([a-z]{2})$/);


@@ -200,23 +379,49 @@ sub htmlize (@) { #{{{
        return IkiWiki::htmlize($page, $page, pagetype($masterfile), $content);
 } #}}}
 
        return IkiWiki::htmlize($page, $page, pagetype($masterfile), $content);
 } #}}}
 

+sub percenttranslated ($) { #{{{
+       my $page=shift;
+
+       return gettext("N/A") unless (istranslation($page));
+       my ($masterpage, $lang) = ($page =~ /(.*)[.]([a-z]{2})$/);
+       my $file=srcfile($pagesources{$page});
+       my $masterfile = srcfile($pagesources{$masterpage});
+       my (@pos,@masters);
+       push @pos,$file;
+       push @masters,$masterfile;
+       my %options = (
+               "markdown" => (pagetype($masterfile) eq 'mdwn') ? 1 : 0,
+       );
+       my $doc=Locale::Po4a::Chooser::new('text',%options);
+       $doc->process(
+               'po_in_name'    => \@pos,
+               'file_in_name'  => \@masters,
+               'file_in_charset'  => 'utf-8',
+               'file_out_charset' => 'utf-8',
+       ) or error("[po/percenttranslated:$file]: failed to translate");
+       my ($percent,$hit,$queries) = $doc->stats();
+       return $percent;
+} #}}}
+

 sub otherlanguages ($) { #{{{
        my $page=shift;
 sub otherlanguages ($) { #{{{
        my $page=shift;

+

        my @ret;
        if (istranslatable($page)) {
                foreach my $lang (sort keys %{$translations{$page}}) {
        my @ret;
        if (istranslatable($page)) {
                foreach my $lang (sort keys %{$translations{$page}}) {

+                       my $translation = $translations{$page}{$lang};

                        push @ret, {
                        push @ret, {

-                               url => urlto($translations{$page}{$lang}, $page),
+                               url => urlto($translation, $page),

                                code => $lang,
                                language => $config{po_slave_languages}{$lang},
                                code => $lang,
                                language => $config{po_slave_languages}{$lang},

-                               master => 0,
+                               percent => percenttranslated($translation),

                        };
                }
        }
        elsif (istranslation($page)) {
                my ($masterpage, $curlang) = ($page =~ /(.*)[.]([a-z]{2})$/);
                push @ret, {
                        };
                }
        }
        elsif (istranslation($page)) {
                my ($masterpage, $curlang) = ($page =~ /(.*)[.]([a-z]{2})$/);
                push @ret, {

-                       url => urlto($masterpage, $page),
+                       url => urlto_with_orig_beautiful_urlpath($masterpage, $page),

                        code => $config{po_master_language}{code},
                        language => $config{po_master_language}{name},
                        master => 1,
                        code => $config{po_master_language}{code},
                        language => $config{po_master_language}{name},
                        master => 1,


@@ -226,7 +431,7 @@ sub otherlanguages ($) { #{{{
                                url => urlto($translations{$masterpage}{$lang}, $page),
                                code => $lang,
                                language => $config{po_slave_languages}{$lang},
                                url => urlto($translations{$masterpage}{$lang}, $page),
                                code => $lang,
                                language => $config{po_slave_languages}{$lang},

-                               master => 0,
+                               percent => percenttranslated($translations{$masterpage}{$lang}),

                        } unless ($lang eq $curlang);
                }
        }
                        } unless ($lang eq $curlang);
                }
        }


@@ -235,16 +440,73 @@ sub otherlanguages ($) { #{{{
 
 sub pagetemplate (@) { #{{{
        my %params=@_;
 
 sub pagetemplate (@) { #{{{
        my %params=@_;

-        my $page=$params{page};
-        my $template=$params{template};
+       my $page=$params{page};
+       my $destpage=$params{destpage};
+       my $template=$params{template};

 
 

+       my ($masterpage, $lang) = ($page =~ /(.*)[.]([a-z]{2})$/) if istranslation($page);
+
+       if (istranslation($page) && $template->query(name => "percenttranslated")) {
+               $template->param(percenttranslated => percenttranslated($page));
+       }
+       if ($template->query(name => "istranslation")) {
+               $template->param(istranslation => istranslation($page));
+       }
+       if ($template->query(name => "istranslatable")) {
+               $template->param(istranslatable => istranslatable($page));
+       }

        if ($template->query(name => "otherlanguages")) {
                $template->param(otherlanguages => [otherlanguages($page)]);
        if ($template->query(name => "otherlanguages")) {
                $template->param(otherlanguages => [otherlanguages($page)]);

+               if (istranslatable($page)) {
+                       foreach my $translation (values %{$translations{$page}}) {
+                               add_depends($page, $translation);
+                       }
+               }
+               elsif (istranslation($page)) {
+                       add_depends($page, $masterpage);
+                       foreach my $translation (values %{$translations{$masterpage}}) {
+                               add_depends($page, $translation);
+                       }
+               }
+       }
+       # Rely on IkiWiki::Render's genpage() to decide wether
+       # a discussion link should appear on $page; this is not
+       # totally accurate, though: some broken links may be generated
+       # when cgiurl is disabled.
+       # This compromise avoids some code duplication, and will probably
+       # prevent future breakage when ikiwiki internals change.
+       # Known limitations are preferred to future random bugs.
+       if ($template->param('discussionlink') && istranslation($page)) {
+               $template->param('discussionlink' => htmllink(
+                                                       $page,
+                                                       $destpage,
+                                                       $masterpage . '/' . gettext("Discussion"),
+                                                       noimageinline => 1,
+                                                       forcesubpage => 0,
+                                                       linktext => gettext("Discussion"),
+                                                       ));
+       }
+       # remove broken parentlink to ./index.html on home page's translations
+       if ($template->param('parentlinks')
+           && istranslation($page)
+           && $masterpage eq "index") {
+               $template->param('parentlinks' => []);

        }
 } # }}}
 
        }
 } # }}}
 

+sub editcontent () { #{{{
+       my %params=@_;
+       # as we're previewing or saving a page, the content may have
+       # changed, so tell the next filter() invocation it must not be lazy
+       if (exists $filtered{$params{page}}{$params{page}}) {
+               delete $filtered{$params{page}}{$params{page}};
+       }
+       return $params{content};
+} #}}}
+

 sub istranslatable ($) { #{{{
        my $page=shift;
 sub istranslatable ($) { #{{{
        my $page=shift;

+

        my $file=$pagesources{$page};
 
        if (! defined $file
        my $file=$pagesources{$page};
 
        if (! defined $file


@@ -257,6 +519,7 @@ sub istranslatable ($) { #{{{
 
 sub _istranslation ($) { #{{{
        my $page=shift;
 
 sub _istranslation ($) { #{{{
        my $page=shift;

+

        my $file=$pagesources{$page};
        if (! defined $file) {
                return IkiWiki::FailReason->new("no file specified");
        my $file=$pagesources{$page};
        if (! defined $file) {
                return IkiWiki::FailReason->new("no file specified");


@@ -282,6 +545,7 @@ sub _istranslation ($) { #{{{
 
 sub istranslation ($) { #{{{
        my $page=shift;
 
 sub istranslation ($) { #{{{
        my $page=shift;

+

        if (_istranslation($page)) {
                my ($masterpage, $lang) = ($page =~ /(.*)[.]([a-z]{2})$/);
                $translations{$masterpage}{$lang}=$page unless exists $translations{$masterpage}{$lang};
        if (_istranslation($page)) {
                my ($masterpage, $lang) = ($page =~ /(.*)[.]([a-z]{2})$/);
                $translations{$masterpage}{$lang}=$page unless exists $translations{$masterpage}{$lang};


@@ -297,6 +561,7 @@ use IkiWiki 2.00;
 
 sub match_istranslation ($;@) { #{{{
        my $page=shift;
 
 sub match_istranslation ($;@) { #{{{
        my $page=shift;

+

        if (IkiWiki::Plugin::po::istranslation($page)) {
                return IkiWiki::SuccessReason->new("is a translation page");
        }
        if (IkiWiki::Plugin::po::istranslation($page)) {
                return IkiWiki::SuccessReason->new("is a translation page");
        }


@@ -307,6 +572,7 @@ sub match_istranslation ($;@) { #{{{
 
 sub match_istranslatable ($;@) { #{{{
        my $page=shift;
 
 sub match_istranslatable ($;@) { #{{{
        my $page=shift;

+

        if (IkiWiki::Plugin::po::istranslatable($page)) {
                return IkiWiki::SuccessReason->new("is set as translatable in po_translatable_pages");
        }
        if (IkiWiki::Plugin::po::istranslatable($page)) {
                return IkiWiki::SuccessReason->new("is set as translatable in po_translatable_pages");
        }


@@ -315,4 +581,58 @@ sub match_istranslatable ($;@) { #{{{
        }
 } #}}}
 
        }
 } #}}}
 

+sub match_lang ($$;@) { #{{{
+       my $page=shift;
+       my $wanted=shift;
+
+       my $regexp=IkiWiki::glob2re($wanted);
+       my $lang;
+       my $masterpage;
+
+       if (IkiWiki::Plugin::po::istranslation($page)) {
+               ($masterpage, $lang) = ($page =~ /(.*)[.]([a-z]{2})$/);
+       }
+       else {
+               $lang = $config{po_master_language}{code};
+       }
+
+       if ($lang!~/^$regexp$/i) {
+               return IkiWiki::FailReason->new("file language is $lang, not $wanted");
+       }
+       else {
+               return IkiWiki::SuccessReason->new("file language is $wanted");
+       }
+} #}}}
+
+sub match_currentlang ($$;@) { #{{{
+       my $page=shift;
+
+       shift;
+       my %params=@_;
+       my ($currentmasterpage, $currentlang, $masterpage, $lang);
+
+       return IkiWiki::FailReason->new("no location provided") unless exists $params{location};
+
+       if (IkiWiki::Plugin::po::istranslation($params{location})) {
+               ($currentmasterpage, $currentlang) = ($params{location} =~ /(.*)[.]([a-z]{2})$/);
+       }
+       else {
+               $currentlang = $config{po_master_language}{code};
+       }
+
+       if (IkiWiki::Plugin::po::istranslation($page)) {
+               ($masterpage, $lang) = ($page =~ /(.*)[.]([a-z]{2})$/);
+       }
+       else {
+               $lang = $config{po_master_language}{code};
+       }
+
+       if ($lang eq $currentlang) {
+               return IkiWiki::SuccessReason->new("file language is the same as current one, i.e. $currentlang");
+       }
+       else {
+               return IkiWiki::FailReason->new("file language is $lang, whereas current language is $currentlang");
+       }
+} #}}}
+

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