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#!/usr/bin/perl
# zoneinfo2lua.pl - Make Lua module from /usr/share/zoneinfo
# Execute from within root of Luci feed, usually feeds/luci
# $Id$
use strict;
my %TZ;
my $tzdin = $ARGV[0] || "/usr/share/zoneinfo";
my $tzdout = $ARGV[1] || "./modules/luci-base/luasrc/sys/zoneinfo";
local $/ = "\012";
open( ZTAB, "< $tzdin/zone.tab" ) || die "open($tzdin/zone.tab): $!";
while( ! eof ZTAB ) {
chomp( my $line = readline ZTAB );
next if $line =~ /^#/ || $line =~ /^\s+$/;
my ( undef, undef, $zone, @comment ) = split /\s+/, $line;
printf STDERR "%-40s", $zone;
if( open ZONE, "< $tzdin/$zone" ) {
seek ZONE, -2, 2;
while( tell(ZONE) > 0 ) {
read ZONE, my $char, 1;
( $char eq "\012" ) ? last : seek ZONE, -2, 1;
}
chomp( my $tz = readline ZONE );
print STDERR ( $tz || "(no tzinfo found)" ), "\n";
close ZONE;
if( $tz ) {
$zone =~ s/_/ /g;
$TZ{$zone} = $tz;
}
}
else
{
print STDERR "open($tzdin/$zone): $!\n";
}
}
close ZTAB;
open(O, "> $tzdout/tzdata.lua") || die "open($tzdout/tzdata.lua): $!\n";
print STDERR "Writing time zones to $tzdout/tzdata.lua ... ";
print O <<HEAD;
-- Licensed to the public under the Apache License 2.0.
module "luci.sys.zoneinfo.tzdata"
TZ = {
HEAD
foreach my $zone ( sort keys %TZ ) {
printf O "\t{ '%s', '%s' },\n", $zone, $TZ{$zone}
}
print O "}\n";
close O;
print STDERR "done\n";
open (O, "> $tzdout/tzoffset.lua") || die "open($tzdout/tzoffset.lua): $!\n";
print STDERR "Writing time offsets to $tzdout/tzoffset.lua ... ";
print O <<HEAD;
-- Licensed to the public under the Apache License 2.0.
module "luci.sys.zoneinfo.tzoffset"
OFFSET = {
HEAD
my %seen;
foreach my $tz ( sort keys %TZ ) {
my $zone = $TZ{$tz};
if( $zone =~ /^
([A-Z]+)
(?:
( -? \d+ (?: : \d+ )? )
(?:
([A-Z]+)
( -? \d+ (?: : \d+ )? )?
)?
)?
\b /xo ) {
my ( $offset, $s, $h, $m ) = ( 0, 1, 0, 0 );
my ( $std, $soffset, $dst, $doffset ) = ( $1, $2, $3, $4 );
next if $seen{$std}; # and ( !$dst or $seen{$dst} );
if ( $soffset ) {
( $s, $h, $m ) = $soffset =~ /^(-)?(\d+)(?::(\d+))?$/;
$s = $s ? 1 : -1;
$h ||= 0;
$m ||= 0;
$offset = $s * $h * 60 * 60;
$offset += $s * $m * 60;
printf O "\t%-5s = %6d,\t-- %s\n",
lc($std), $offset, $std;
$seen{$std} = 1;
if( $dst ) {
if( $doffset ) {
( $s, $h, $m ) = $doffset =~ /^(-)?(\d+)(?::(\d+))?$/;
$s = $s ? 1 : -1;
$h ||= 0;
$m ||= 0;
$offset = $s * $h * 60 * 60;
$offset += $s * $m * 60;
} else {
$offset += 60 * 60;
}
printf O "\t%-5s = %6d,\t-- %s\n",
lc($dst), $offset, $dst;
$seen{$dst} = 1;
}
}
else {
printf O "\t%-5s = %6d,\t-- %s\n",
lc($std), $offset, $std;
$seen{$std} = 1;
}
}
}
print O "}\n";
close O;
print STDERR "done\n";
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