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#!/usr/bin/perl
# update-language --- Generate language.dat* from a set of files
# Copyright (C) 2015 Norbert Preining
#
# 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; version 2 dated June, 1991.
#
# 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; see the file COPYING. If not, write to the
# Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
# Boston, MA 02110-1301 USA.
$^W = 1;
use strict;
my $version = "0.1";
use File::Basename;
use Getopt::Long;
use Text::ParseWords;
my $mode = 'all';
# for each file in /var/lib/tex-common/hyphen-cnf/
# plus the config file /etc/texmf/web2c/local-hyphen.cnf
my $localconf = '/etc/texmf/web2c/local-hyphen.cnf';
my $default_output_dir = '/var/lib/texmf/tex/generic/config';
my %data;
my $progname = basename($0);
my $opt_conf_file = "";
my $opt_output = "";
my $opt_outdir = "";
my $opt_checks = 0;
my $opt_quiet = 0;
my $opt_help = 0;
my $opt_version = 0;
my %defaults = (
'latex' => {
'output' => 'language.dat',
'func' => \&make_latex_line,
'head' => '/usr/share/texlive/texmf-dist/tex/generic/config/language.us',
'post' => '',
},
'etex' => {
'output' => 'language.def',
'func' => \&make_etex_line,
'head' => '/usr/share/texlive/texmf-dist/tex/generic/config/language.us.def',
'post' => "\n\\uselanguage \{USenglish\} \%\%\% This MUST be the last line of the file.\n",
},
'luatex' => {
'output' => 'language.dat.lua',
'func' => \&make_luatex_line,
'head' => '/usr/share/texlive/texmf-dist/tex/generic/config/language.us.lua',
'post' => "\}\n",
}
);
&main();
# from here on only sub definitions!
sub main {
GetOptions(
"conf-file|c=s" => \$opt_conf_file,
"output-file|o=s" => \$opt_output,
"output-dir|d=s" => \$opt_outdir,
"checks" => \$opt_checks,
"quiet|q" => \$opt_quiet,
"help|h|?" => \$opt_help,
"version|v" => \$opt_version) or usage();
if ($progname eq "update-language") {
$mode = "all";
} elsif ($progname eq "update-language-dat") {
$mode = "latex";
} elsif ($progname eq "update-language-def") {
$mode = "etex";
} elsif ($progname eq "update-language-lua") {
$mode = "luatex";
} else {
die "Please call me as update-language(-dat,-def,-lua).";
}
if ($opt_help) {
usage();
exit 0;
}
if ($opt_version) {
version();
exit 0;
}
# if texlive-base is not properly installed, we do nothing
my $stat = `dpkg-query -W -f=\'\${Status}\' texlive-base:all 2>/dev/null`;
if ($stat ne "install ok installed") {
printf "$progname: texlive-base not installed and configured, doing nothing!\n";
exit 0;
}
update_conffiles($mode);
}
sub update_conffiles {
my $mode = shift;
my @todo;
if ($mode eq 'all') {
push @todo, keys(%defaults);
} else {
push @todo, $mode;
}
read_data();
for my $t (@todo) {
my $of = ($opt_output ? $opt_output :
( $opt_outdir ? "$opt_outdir/$defaults{$t}{'output'}" :
"$default_output_dir/$defaults{$t}{'output'}"));
open(FOO, ">$of") || die "Cannot open $of: $!";
if (-r $defaults{$t}{'head'}) {
open BAR, "<", $defaults{$t}{'head'} || die("Cannot open head file $defaults{$t}{'head'}: $!");
for (<BAR>) { print FOO $_; }
close BAR;
} else {
die("Missing head file $defaults{$t}{'head'}: $!");
}
for my $n (keys %data) {
print FOO &{$defaults{$t}{'func'}}($n);
}
print FOO $defaults{$t}{'post'};
close FOO;
}
}
# should have been in TLUtils, but the actual code is hidden
# in TLPOBJ.pm, bad!
sub make_latex_line {
my $n = shift;
my $ret = "$n " . $data{$n}{'file'} . "\n";
if ($data{$n}{'synonyms'}) {
for my $s (@{$data{$n}{'synonyms'}}) {
$ret .= "=$s\n";
}
}
return $ret;
}
sub make_etex_line {
my $n = shift;
my $file = $data{$n}{'file'};
my $lhm = $data{$n}{'lefthyphenmin'};
my $rhm = $data{$n}{'righthyphenmin'};
my $ret = "\\addlanguage\{$n\}\{$file\}\{\}\{$lhm\}\{$rhm\}\n";
return $ret;
}
sub make_luatex_line {
my $n = shift;
my $file = $data{$n}{'file'};
my $exc = $data{$n}{'file_exceptions'};
my $lhm = $data{$n}{'lefthyphenmin'};
my $rhm = $data{$n}{'righthyphenmin'};
my $patt = $data{$n}{'file_patterns'};
my $special = $data{$n}{'luaspecial'};
my $syns = '';
if ($data{$n}{'synonyms'}) {
my @syn = (@{$data{$n}{'synonyms'}});
map { $_ = "'$_'" } @syn;
$syns = join(', ', @syn);
}
my $ret = <<"EOF"
[\'$n\'] = {
loader = \'$file\',
lefthyphenmin = $lhm,
righthyphenmin = $rhm,
synonyms = { $syns },
EOF
;
$ret .= " patterns = \'$patt\',\n" if defined $patt;
$ret .= " hyphenation = \'$exc\',\n" if defined $exc;
$ret .= " special = \'$special\',\n" if defined $special;
$ret .= " },\n";
return $ret;
}
sub parse_hyphen_line {
my $line = shift;
my %ret;
my $default_lefthyphenmin = 2;
my $default_righthyphenmin = 3;
$ret{"lefthyphenmin"} = $default_lefthyphenmin;
$ret{"righthyphenmin"} = $default_righthyphenmin;
$ret{"synonyms"} = [];
my @parsed = Text::ParseWords::parse_line('\s+', 0, $line);
for my $p (@parsed) {
my ($a, $b) = split(/=/, $p);
if ($a eq "name") {
if (!$b) {
$ret{"error"} = "AddHyphen line needs name=something";
return %ret;
}
$ret{"name"} = $b;
next;
}
if ($a eq "lefthyphenmin") {
$ret{"lefthyphenmin"} = ( $b ? $b : $default_lefthyphenmin );
next;
}
if ($a eq "righthyphenmin") {
$ret{"righthyphenmin"} = ( $b ? $b : $default_righthyphenmin );
next;
}
if ($a eq "file") {
if (!$b) {
$ret{"error"} = "AddHyphen line needs file=something";
return %ret;
}
$ret{"file"} = $b;
next;
}
if ($a eq "file_patterns") {
$ret{"file_patterns"} = $b;
next;
}
if ($a eq "file_exceptions") {
$ret{"file_exceptions"} = $b;
next;
}
if ($a eq "luaspecial") {
$ret{"luaspecial"} = $b;
next;
}
if ($a eq "databases") {
@{$ret{"databases"}} = split /,/, $b;
next;
}
if ($a eq "synonyms") {
@{$ret{"synonyms"}} = split /,/, $b;
next;
}
if ($a eq "comment") {
$ret{"comment"} = $b;
next;
}
# should not be reached at all
$ret{"error"} = "Unknown language directive $a";
return %ret;
}
# this default value couldn't be set earlier
if (not defined($ret{"databases"})) {
if (defined $ret{"file_patterns"} or defined $ret{"file_exceptions"}
or defined $ret{"luaspecial"}) {
@{$ret{"databases"}} = qw(dat def lua);
} else {
@{$ret{"databases"}} = qw(dat def);
}
}
return %ret;
}
sub read_one_file {
my $f = shift;
my $do_warn = shift;
open FOO, "<$f" || die ("Cannot read file $f: $!");
while (<FOO>) {
chomp;
next if /^\s*%/;
next if /^\s*$/;
my %r = parse_hyphen_line($_);
if (defined($r{"error"})) {
die ("Cannot parse $_ in $f: $r{'error'}");
}
my $n = $r{'name'};
if (defined($data{$n})) {
if ($do_warn == 2) {
printf STDERR "TeX Live internal double defined hyphenations pattern found: $n\n";
} elsif ($do_warn == 1) {
printf STDERR "double defined hyphenations pattern found: $n\n";
}
}
for my $k (keys %r) {
next if ($k eq "name");
$data{$n}{$k} = $r{$k};
}
}
close FOO;
}
sub read_data {
if (-d '/var/lib/tex-common/hyphen-cnf/texlive/') {
for my $f (</var/lib/tex-common/hyphen-cnf/texlive/*.cnf>) {
read_one_file($f, 2);
}
}
if (-d '/var/lib/tex-common/hyphen-cnf/texmf/') {
for my $f (</var/lib/tex-common/hyphen-cnf/texmf/*.cnf>) {
read_one_file($f, 1);
}
}
if (-r $localconf) {
read_one_file($localconf, 0);
}
}
sub version {
print "$progname $version\n";
}
sub usage () {
print <<"EOF"
Usage: $progname(-dat,-def,-lua) [OPTIONS ...]
Generate hyphenation configuration files language.dat, .def, .dat.lua
When called as update-language, all three configurations files are
generated. Otherwise only the selected one.
Options:
-c, --conf-file=FILE file giving additional hyphen specifications
-o, --output-file=FILE file to write the output to
-d, --output-dir=DIR directory where files are written
--checks perform sanity checks on the generated config file
-q, --quiet don't write anything to the standard output during
normal operation
-h, -?, --help display this help message and exit
--version output version information and exit
Files:
The default output directory is
$default_output_dir
The default output files are
for update-language-dat $defaults{'latex'}{'output'}
for update-language-def $defaults{'etex'}{'output'}
for update-language-lua $defaults{'luatex'}{'output'}
If -o/--output-file is given, it overrides all defaults.
EOF
;
}
### Local Variables:
### perl-indent-level: 2
### tab-width: 2
### indent-tabs-mode: nil
### End:
# vim:set tabstop=2 expandtab: #
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