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2018-04-14

2018-04-14 12:23:58 by Henrik Grubbström (Grubba) <grubba@grubba.org>

Updated to tzdata2018d.

1: + # Convert tzdata source into vanguard or rearguard form.    -  + # Contributed by Paul Eggert. This file is in the public domain. +  + # This is not a general-purpose converter; it is designed for current tzdata. + # + # When converting to vanguard form, the output can use negative SAVE + # values. + # + # When converting to rearguard form, the output uses only nonnegative + # SAVE values. The idea is for the output data to simulate the behavior + # of the input data as best it can within the constraints of the + # rearguard format. +  + BEGIN { +  dst_type["vanguard.zi"] = 1 +  dst_type["main.zi"] = 1 +  dst_type["rearguard.zi"] = 1 +  +  # The command line should set OUTFILE to the name of the output file. +  if (!dst_type[outfile]) exit 1 +  vanguard = outfile == "vanguard.zi" + } +  + /^Zone/ { zone = $2 } +  + outfile != "main.zi" { +  in_comment = /^#/ +  +  # If this line should differ due to Ireland using negative SAVE values, +  # uncomment the desired version and comment out the undesired one. +  Rule_Eire = /^#?Rule[\t ]+Eire[\t ]/ +  Zone_Dublin_post_1968 \ +  = (zone == "Europe/Dublin" && /^#?[\t ]+[01]:00[\t ]/ \ +  && (!$(in_comment + 4) || 1968 < $(in_comment + 4))) +  if (Rule_Eire || Zone_Dublin_post_1968) { +  if ((Rule_Eire \ +  || (Zone_Dublin_post_1968 && $(in_comment + 3) == "IST/GMT")) \ +  == vanguard) { +  sub(/^#/, "") +  } else if (/^[^#]/) { +  sub(/^/, "#") +  } +  } + } +  + # If a Link line is followed by a Zone line for the same data, comment + # out the Link line. This can happen if backzone overrides a Link + # with a Zone. + /^Link/ { +  linkline[$3] = NR + } + /^Zone/ { +  sub(/^Link/, "#Link", line[linkline[$2]]) + } +  + { line[NR] = $0 } +  + END { +  for (i = 1; i <= NR; i++) +  print line[i] + }   Newline at end of file added.