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# A GNU Texinfo rendering plugin.
# Copyright © 2007 Thomas Schwinge <tschwinge@gnu.org>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
# http://ikiwiki.info/plugins/contrib/texinfo/
package IkiWiki::Plugin::texinfo;
use warnings;
use strict;
use IkiWiki 2.00;
# From `Ikiwiki/Plugins/teximg.pm'.
sub create_tmp_dir ($)
{
# Create a temp directory, it will be removed when ikiwiki exits.
my $base = shift;
my $template = $base . ".XXXXXXXXXX";
use File::Temp qw (tempdir);
my $tmpdir = tempdir ($template, TMPDIR => 1, CLEANUP => 1);
return $tmpdir;
}
sub import
{
hook (type => "filter", id => "texi", call => \&filter);
hook (type => "htmlize", id => "texi", call => \&htmlize);
hook (type => "pagetemplate", id => "texi", call => \&pagetemplate);
}
my %copyright;
my %license;
sub filter (@)
{
my %params = @_;
my $page = $params{page};
# TODO. For ``$page eq 'shortcuts''' this fails. Is this expected?
goto out unless defined $pagesources{$page};
# Only care for `.texi' files.
goto out unless pagetype ($pagesources{$page}) eq 'texi';
# No need to parse twice.
goto out if exists $copyright{$page};
# TODO. Check the `meta' plugin about when to do this at all.
$copyright{$page} = undef;
$license{$page} = undef;
# We assume that the copyright and licensing information is to be taken
# from the main `.texi' file.
@_ = split /\n/, $params{content};
# Do some parsing to cut out the interesting bits, if there are any.
while (defined ($_ = shift @_))
{
# Did we find a start tag?
last if /^\@copying$/;
}
# Already at the end of the page?
goto out unless defined $_;
while (defined ($_ = shift @_))
{
# Already at the end of the copying section? (Shouldn't happen.)
goto out if /^\@end\ copying/;
# Found the ``^Copyright'' line?
last if /^Copyright/;
}
# Already at the end of the page? (Shouldn't happen.)
goto out unless defined $_;
# Copyright text will follow.
$copyright{$page} = $_;
while (defined ($_ = shift @_))
{
# Found the separator of copyright and licensind information?
last if /^$/;
# Already at the end of the copying section?
goto finish if /^\@end\ copying/;
$copyright{$page} .= ' ' . $_;
}
# Already at the end of the page? (Shouldn't happen.)
goto finish unless defined $_;
# Licensing text will follow.
while (defined ($_ = shift @_))
{
# Already at the end of the copying section?
last if /^\@end\ copying/;
$license{$page} .= ' ' . $_;
}
finish:
# ``Render'' by hand some stuff that is commonly found in this section.
if (defined $copyright{$page})
{
$copyright{$page} =~ s/\@copyright\{\}/©/g;
}
if (defined $license{$page})
{
$license{$page} =~ s/\@quotation//g;
$license{$page} =~ s/\@end\ quotation//g;
$license{$page} =~ s/\@ignore/<!--/g;
$license{$page} =~ s/\@end\ ignore/-->/g;
}
out:
return $params{content};
}
sub htmlize (@)
{
my %params = @_;
my $page = $params{page};
my $home;
if (defined $pagesources{$page})
{
$home = $config{srcdir} . '/' . dirname ($pagesources{$page});
}
else
{
# This happens in the CGI web frontent, when freshly creating a
# `texi'-type page and selecting to ``Preview'' the page before doing a
# ``Save Page''.
# TODO.
$home = $config{srcdir};
}
my $pid;
my $sigpipe = 0;
$SIG{PIPE} = sub
{
$sigpipe = 1;
};
my $tmp = eval
{
create_tmp_dir ("texinfo")
};
if (! $@ &&
# `makeinfo' can't work directly on stdin.
writefile ("texinfo.texi", $tmp, $params{content}) == 0)
{
return "couldn't write temporary file";
}
use File::Basename;
use IPC::Open2;
$pid = open2 (*IN, *OUT,
'makeinfo',
'--html',
'--no-split', '--output=-',
# We might be run from a directory different from the one the
# `.texi' file is stored in.
# TODO. Should we `cd' to this directory instead?
'-P', $home,
# TODO. Adding the following allows for putting files like `gpl.texinfo' into
# the top-level wiki directory.
'-I', $config{srcdir},
$tmp . "/texinfo.texi");
# open2 doesn't respect "use open ':utf8'"
binmode (IN, ':utf8');
# binmode (OUT, ':utf8');
# print OUT $params{content};
close OUT;
local $/ = undef;
my $ret = <IN>;
close IN;
waitpid $pid, 0;
$SIG{PIPE} = "DEFAULT";
return "failed to render" if $sigpipe;
# Cut out the interesting bits.
$ret =~ s/.*<body>//s;
$ret =~ s/<\/body>.*//s;
return $ret;
}
sub pagetemplate (@)
{
my %params = @_;
my $page = $params{page};
my $destpage = $params{destpage};
my $template = $params{template};
# TODO. Check the `meta' plugin about when to do this at all.
if ($template->query (name => "copyright") &&
! defined $template->param ('copyright'))
{
if (defined $copyright{$page} && length $copyright{$page})
{
$template->param (copyright =>
IkiWiki::linkify ($page, $destpage, $copyright{$page}));
}
}
if ($template->query (name => "license") &&
! defined $template->param ('license'))
{
if (defined $license{$page} && length $license{$page})
{
$template->param (license =>
IkiWiki::linkify ($page, $destpage, $license{$page}));
}
}
}
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