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|
#!/usr/bin/env perl
# $Id$
# Copyright 2009-2021 Norbert Preining
# This file is licensed under the GNU General Public License version 2
# or any later version.
#
# translation infrastructure for TeX Live programs
# if $::lang is set then that one is used
# if $::lang is unset try to auto-deduce it from LC_MESSAGES/Registry
# if $::opt_lang is set use that instead
#
# this module implements parsing of .po files, but no specialities of .po
# files are supported. Only reading of msgstr and msgid and concatenating
# multiple lines. Furthermore, string replacements are done:
# \n -> <newline>
# \" -> "
# \\ -> \
#
use strict;
$^W = 1;
use utf8;
no utf8;
if (defined($::opt_lang)) {
$::lang = $::opt_lang;
if ($::lang eq "zh") {
# set language to simplified chinese
$::lang = "zh_CN";
}
} else {
if ($^O =~ /^MSWin/i) {
# trying to deduce automatically the country code
my ($lang, $area) = TeXLive::TLWinGoo::reg_country();
if ($lang) {
$::lang = $lang;
$::area = uc($area);
} else {
debug("didn't get any useful code from reg_country\n");
}
} else {
# we load POSIX and locale stuff
require POSIX;
import POSIX qw/locale_h/;
# now we try to deduce $::lang
my $loc = setlocale(&POSIX::LC_MESSAGES);
my ($lang,$area,$codeset);
if ($loc =~ m/^([^_.]*)(_([^.]*))?(\.([^@]*))?(@.*)?$/) {
$lang = defined($1)?$1:"";
# lower case the area code
$area = defined($3)?uc($3):"";
if ($lang eq "zh") {
if ($area =~ m/^(TW|HK)$/i) {
$lang = "zh";
$area = "TW";
} else {
# fallback to zh-cn for anything else, that is
# zh-cn, zh-sg, zh, and maybe something else
$lang = "zh";
$area = "CN";
}
}
}
$::lang = $lang if ($lang);
$::area = $area if ($area);
}
}
our %TRANS;
#
# __ takes a string argument and checks that it
sub __ ($@) {
my $key = shift;
my $ret;
# if no $::lang is set just return without anything
if (!defined($::lang)) {
$ret = $key;
} else {
$ret = $key;
$key =~ s/\\/\\\\/g;
$key =~ s/\n/\\n/g;
$key =~ s/"/\\"/g;
# if the translation is defined return it
if (defined($TRANS{$::lang}->{$key})) {
$ret = $TRANS{$::lang}->{$key};
if ($::debug_translation && ($key eq $ret)) {
print STDERR "probably untranslated in $::lang: >>>$key<<<\n";
}
} else {
# if we cannot find it, return $s itself
if ($::debug_translation && $::lang ne "en") {
print STDERR "no translation in $::lang: >>>$key<<<\n";
}
# $ret is already set initially
}
$ret =~ s/\\n/\n/g;
$ret =~ s/\\"/"/g;
$ret =~ s/\\\\/\\/g;
}
# translate back $ret:
return sprintf($ret, @_);
}
sub load_translations() {
if (defined($::lang) && ($::lang ne "en") && ($::lang ne "C")) {
my $code = $::lang;
my @files_to_check;
if (defined($::area)) {
$code .= "_$::area";
push @files_to_check,
$::lang . "_" . $::area, "$::lang-$::area",
$::lang . "_" . lc($::area), "$::lang-" . lc($::area),
# try also without area code, even if it is given!
$::lang;
} else {
push @files_to_check, $::lang;
}
my $found = 0;
for my $f (@files_to_check) {
if (-r "$::installerdir/tlpkg/translations/$f.po") {
$found = 1;
$::lang = $f;
last;
}
}
if (!$found) {
debug ("no translations available for $code (nor $::lang); falling back to English\n");
# tlwarn ("\n Sorry, no translations available for $code (nor $::lang); falling back to English.
# Make sure that you have the package \"texlive-msg-translations\" installed.
# (If you'd like to help translate the installer's messages, please see
# https://tug.org/texlive/doc.html#install-tl-xlate for information.)\n\n");
} else {
# merge the translated strings into the text string
open(LANG, "<$::installerdir/tlpkg/translations/$::lang.po");
my $msgid;
my $msgstr;
my $inmsgid;
my $inmsgstr;
while (<LANG>) {
chomp;
next if m/^\s*#/;
if (m/^\s*$/) {
if ($inmsgid) {
debug("msgid $msgid without msgstr in $::lang.po\n");
$inmsgid = 0;
$inmsgstr = 0;
$msgid = "";
$msgstr = "";
next;
}
if ($inmsgstr) {
if ($msgstr) {
if (!utf8::decode($msgstr)) {
warn("decoding string to utf8 didn't work: $msgstr\n");
}
# we decode msgid too to get \\ and not \
if (!utf8::decode($msgid)) {
warn("decoding string to utf8 didn't work: $msgid\n");
}
$TRANS{$::lang}{$msgid} = $msgstr;
} else {
ddebug("untranslated $::lang: ...$msgid...\n");
}
$inmsgid = 0;
$inmsgstr = 0;
$msgid = "";
$msgstr = "";
next;
}
next;
}
if (m/^msgid\s+"(.*)"\s*$/) {
if ($msgid) {
warn("stray msgid line: $_");
next;
}
$inmsgid = 1;
$msgid = $1;
next;
}
if (m/^"(.*)"\s*$/) {
if ($inmsgid) {
$msgid .= $1;
} elsif ($inmsgstr) {
$msgstr .= $1;
} else {
tlwarn("cannot parse $::lang.po line: $_\n");
}
next;
}
if (m/^msgstr\s+"(.*)"\s*$/) {
if (!$inmsgid) {
tlwarn("msgstr $1 without msgid\n");
next;
}
$msgstr = $1;
$inmsgstr = 1;
$inmsgid = 0;
}
}
close(LANG);
}
}
}
1;
__END__
### Local Variables:
### perl-indent-level: 2
### tab-width: 2
### indent-tabs-mode: nil
### End:
# vim:set tabstop=2 expandtab: #
|
