/usr/share/namazu/pl/extutf8.pl is in namazu2-index-tools 2.0.21-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# -*- Perl -*-
# $Id: extutf8.pl,v 1.1.4.5 2008-07-26 06:14:37 opengl2772 Exp $
# Copyright (C) 2008 Tadamasa Teranishi All rights reserved.
# Copyright (C) 2008 Namazu Project All rights reserved.
# This is free software with ABSOLUTELY NO WARRANTY.
#
# 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 versions 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., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA
#
# This file must be encoded in EUC-JP encoding
#
package extutf8;
use strict;
use English;
require 'util.pl';
eval 'require NKF;';
use vars qw($utf8_to_eucjp $codeconv_document);
$utf8_to_eucjp = undef;
$codeconv_document = undef;
my $_converter = '';
my $_utfconvpath = undef;
my $_nkfversion = 0.00;
sub setup()
{
return 'yes' if (defined $codeconv_document);
if (!util::islang("ja")) {
$utf8_to_eucjp = \&_utf8_to_usascii;
$codeconv_document = \&_codeconv_document_usascii;
$_converter = 'to_usascii';
return 'yes';
}
eval '$_nkfversion = $NKF::VERSION;';
$_nkfversion = 0.00 if (!defined $_nkfversion);
if ($_nkfversion >= 2.04) {
$utf8_to_eucjp = \&_nkf_utf8_to_eucjp;
$codeconv_document = \&_nkf_codeconv_document;
$_converter = 'module_nkf';
return 'yes';
}
if ($English::PERL_VERSION >= 5.008) {
eval 'use Encode qw/from_to Unicode JP/;';
$utf8_to_eucjp = \&_encode_utf8_to_eucjp;
$codeconv_document = \&_encode_codeconv_document;
$_converter = 'module_encode';
return 'yes';
}
$_utfconvpath = util::checkcmd('lv');
if (defined $_utfconvpath) {
$utf8_to_eucjp = \&_lv_utf8_to_eucjp;
$codeconv_document = \&_lv_codeconv_document;
$_converter = 'lv';
return 'yes';
}
if (defined util::checklib('unicode.pl')) {
eval require 'unicode.pl';
$utf8_to_eucjp = \&_unicode_utf8_to_eucjp;
$codeconv_document = \&_unicode_codeconv_document;
$_converter = 'unicode.pl';
return 'yes';
}
return 'no';
}
sub converter()
{
return $_converter;
}
#
#
#
sub _utf8_to_usascii($)
{
my ($contref) = @_;
codeconv::tousascii($contref);
return $$contref;
}
sub _codeconv_document_usascii($)
{
my ($contref) = @_;
_utf8_to_usascii($contref);
codeconv::normalize_document($contref);
return $$contref;
}
#
# Conversion by "Encode"
# Perl 5.8 or later
#
sub _encode_utf8_to_eucjp($)
{
my ($contref) = @_;
Encode::from_to($$contref, "utf-8", "euc-jp");
return $$contref;
}
sub _encode_codeconv_document($)
{
my ($contref) = @_;
Encode::from_to($$contref, "utf-8", "euc-jp");
codeconv::normalize_eucjp_document($contref);
return $$contref;
}
#
# Conversion by "NKF Perl module"
# version 2.04 or later
#
sub _nkf_utf8_to_eucjp($)
{
my ($contref) = @_;
$$contref = NKF::nkf("-Wex", $$contref);
return $$contref;
}
sub _nkf_codeconv_document($)
{
my ($contref) = @_;
$$contref = NKF::nkf("-WemXZ1", $$contref);
codeconv::normalize_document($contref);
return $$contref;
}
#
# [obsolute] Conversion by "lv"
# It is slow.
#
sub _lv_utf8_to_eucjp($)
{
my ($contref) = @_;
my $tmpfile = util::tmpnam('NMZ.tmp.utf8');
{
my $fh = util::efopen("> $tmpfile");
print $fh $$contref;
util::fclose($fh);
}
$$contref = "";
my @cmd = ($_utfconvpath, "-Iu8", "-Oej", $tmpfile);
my $status = util::syscmd(
command => \@cmd,
option => {
"stdout" => $contref,
"stderr" => "/dev/null",
},
);
unlink $tmpfile;
return $$contref;
}
sub _lv_codeconv_document($)
{
my ($contref) = @_;
_lv_utf8_to_eucjp($contref);
codeconv::normalize_eucjp_document($contref);
return $$contref;
}
#
# [obsolute] Conversion by "unicode.pl"
#
sub _unicode_utf8_to_eucjp($)
{
my ($contref) = @_;
my @unicodeList = unicode::UTF8toUTF16($$contref);
$$contref = unicode::u2e(@unicodeList);
$$contref =~ s/\00//g;
return $$contref;
}
sub _unicode_codeconv_document($)
{
my ($contref) = @_;
_unicode_utf8_to_eucjp($contref);
codeconv::normalize_eucjp_document($contref);
return $$contref;
}
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