icuSources/tools/tzcode/tz2icu.h

   1 /*
   2 **********************************************************************
   3 * Copyright (c) 2003-2004, International Business Machines
   4 * Corporation and others.  All Rights Reserved.
   5 **********************************************************************
   6 * Author: Alan Liu
   7 * Created: July 10 2003
   8 * Since: ICU 2.8
   9 **********************************************************************
  10 */
  11
  12 #ifndef _TZ2ICU_H_
  13 #define _TZ2ICU_H_
  14
  15 /* We have modified the zoneinfo binary format (we write raw offset
  16  * and DST offset separately instead of their sum) so we notate the
  17  * file with a distinct signature.  This prevents someone from trying
  18  * to use our output files as normal zoneinfo files, and also prevents
  19  * someone from trying to use normal zoneinfo files for ICU.  We also
  20  * use the first byte of the reserved section as a version integer, to
  21  * be incremented each time the data format changes.
  22  */
  23
  24 #define TZ_ICU_MAGIC "TZic" /* cf. TZ_MAGIC = "TZif" */
  25
  26 typedef unsigned char ICUZoneinfoVersion;
  27
  28 #define TZ_ICU_VERSION ((ICUZoneinfoVersion) 1)
  29
  30 /* File into which we will write supplemental ICU data.  This allows
  31  * zic to communicate final zone data to tz2icu. */
  32 #define ICU_ZONE_FILE "icu_zone.txt"
  33
  34 /* File containing legacy aliases.  Read by tz2icu. */
  35 #define ICU_TZ_ALIAS  "tz.alias"
  36
  37 /* Output resource name.  This determines both the file name and the
  38  * resource name within the file.  That is, the output will be to the
  39  * file ICU_TZ_RESOURCE ".txt" and the resource within it will be
  40  * ICU_TZ_RESOURCE. */
  41 #define ICU_TZ_RESOURCE "zoneinfo"
  42
  43 #endif