build/zoneinfo2lua.pl

   1 #!/usr/bin/perl
   2 # zoneinfo2lua.pl - Make Lua module from /usr/share/zoneinfo
   3 # Execute from within root of Luci feed, usually feeds/luci
   4 # $Id$
   5
   6 use strict;
   7
   8 my %TZ;
   9
  10 my $tzdin  = $ARGV[0] || "/usr/share/zoneinfo";
  11 my $tzdout = $ARGV[1] || "./modules/luci-base/luasrc/sys/zoneinfo";
  12
  13 local $/ = "\012";
  14 open( ZTAB, "< $tzdin/zone.tab" ) || die "open($tzdin/zone.tab): $!";
  15
  16 while( ! eof ZTAB ) {
  17         chomp( my $line = readline ZTAB );
  18         next if $line =~ /^#/ || $line =~ /^\s+$/;
  19
  20         my ( undef, undef, $zone, @comment ) = split /\s+/, $line;
  21
  22         printf STDERR "%-40s", $zone;
  23
  24         if( open ZONE, "< $tzdin/$zone" ) {
  25                 seek ZONE, -2, 2;
  26
  27                 while( tell(ZONE) > 0 ) {
  28                         read ZONE, my $char, 1;
  29                         ( $char eq "\012" ) ? last : seek ZONE, -2, 1;
  30                 }
  31
  32                 chomp( my $tz = readline ZONE );
  33                 print STDERR ( $tz || "(no tzinfo found)" ), "\n";
  34                 close ZONE;
  35
  36                 if( $tz ) {
  37                         $zone =~ s/_/ /g;
  38                         $TZ{$zone} = $tz;
  39                 }
  40         }
  41         else
  42         {
  43                 print STDERR "open($tzdin/$zone): $!\n";
  44         }
  45 }
  46
  47 close ZTAB;
  48
  49
  50 open(O, "> $tzdout/tzdata.lua") || die "open($tzdout/tzdata.lua): $!\n";
  51
  52 print STDERR "Writing time zones to $tzdout/tzdata.lua ... ";
  53 print O <<HEAD;
  54 -- Licensed to the public under the Apache License 2.0.
  55
  56 module "luci.sys.zoneinfo.tzdata"
  57
  58 TZ = {
  59 HEAD
  60
  61 foreach my $zone ( sort keys %TZ ) {
  62         printf O "\t{ '%s', '%s' },\n", $zone, $TZ{$zone}
  63 }
  64
  65 print O "}\n";
  66 close O;
  67
  68 print STDERR "done\n";
  69
  70
  71 open (O, "> $tzdout/tzoffset.lua") || die "open($tzdout/tzoffset.lua): $!\n";
  72
  73 print STDERR "Writing time offsets to $tzdout/tzoffset.lua ... ";
  74 print O <<HEAD;
  75 -- Licensed to the public under the Apache License 2.0.
  76
  77 module "luci.sys.zoneinfo.tzoffset"
  78
  79 OFFSET = {
  80 HEAD
  81
  82 my %seen;
  83 foreach my $tz ( sort keys %TZ ) {
  84         my $zone = $TZ{$tz};
  85
  86         if( $zone =~ /^
  87                 ([A-Z]+)
  88                 (?:
  89                         ( -? \d+ (?: : \d+ )? )
  90                         (?:
  91                                 ([A-Z]+)
  92                                 ( -? \d+ (?: : \d+ )? )?
  93                         )?
  94                 )?
  95         \b /xo ) {
  96                 my ( $offset, $s, $h, $m ) = ( 0, 1, 0, 0 );
  97                 my ( $std, $soffset, $dst, $doffset ) = ( $1, $2, $3, $4 );
  98
  99                 next if $seen{$std}; # and ( !$dst or $seen{$dst} );
 100
 101                 if ( $soffset ) {
 102                         ( $s, $h, $m ) = $soffset =~ /^(-)?(\d+)(?::(\d+))?$/;
 103
 104                         $s = $s ? 1 : -1;
 105                         $h ||= 0;
 106                         $m ||= 0;
 107
 108                         $offset  = $s * $h * 60 * 60;
 109                         $offset += $s * $m * 60;
 110
 111                         printf O "\t%-5s = %6d,\t-- %s\n",
 112                                 lc($std), $offset, $std;
 113
 114                         $seen{$std} = 1;
 115
 116                         if( $dst ) {
 117                                 if( $doffset ) {
 118                                         ( $s, $h, $m ) = $doffset =~ /^(-)?(\d+)(?::(\d+))?$/;
 119
 120                                         $s = $s ? 1 : -1;
 121                                         $h ||= 0;
 122                                         $m ||= 0;
 123
 124                                         $offset  = $s * $h * 60 * 60;
 125                                         $offset += $s * $m * 60;
 126                                 } else  {
 127                                         $offset += 60 * 60;
 128                                 }
 129
 130                                 printf O "\t%-5s = %6d,\t-- %s\n",
 131                                         lc($dst), $offset, $dst;
 132
 133                                 $seen{$dst} = 1;
 134                         }
 135                 }
 136                 else {
 137                         printf O "\t%-5s = %6d,\t-- %s\n",
 138                                 lc($std), $offset, $std;
 139
 140                         $seen{$std} = 1;
 141                 }
 142
 143         }
 144 }
 145
 146 print O "}\n";
 147 close O;
 148
 149 print STDERR "done\n";