ICU-461.12.tar.gz

[apple/icu.git] / icuSources / tools / tzcode / readme.txt

diff --git a/icuSources/tools/tzcode/readme.txt b/icuSources/tools/tzcode/readme.txt
index d13b1468a122a43eec8394b0045b757e8f3a6096..7ad2cce0c9f49566148e85a43fdf1665fc365dc8 100644 (file)
--- a/icuSources/tools/tzcode/readme.txt
+++ b/icuSources/tools/tzcode/readme.txt
@@ -1,5 +1,5 @@
 **********************************************************************
-* Copyright (c) 2003-2004, International Business Machines
+* Copyright (c) 2003-2007, International Business Machines
 * Corporation and others.  All Rights Reserved.
 **********************************************************************
 * Author: Alan Liu
@@ -7,6 +7,10 @@
 * Since: ICU 2.8
 **********************************************************************
 
+Note:  this directory currently contains tzcode as of tzcode2006h.tar.gz
+   with localtime.c  patches from tzcode2006i.tar.gz
+
+
 ----------------------------------------------------------------------
 OVERVIEW
 
@@ -19,7 +23,7 @@ behavior, as well as the full set of Olson compatibility IDs.
 
 References:
 
-ICU4C:  http://oss.software.ibm.com/icu/
+ICU4C:  http://www.icu-project.org/
 Olson:  ftp://elsie.nci.nih.gov/pub/
 
 ----------------------------------------------------------------------
@@ -56,91 +60,42 @@ several parts.  E.g.:
   tzcode2003a.tar.gz      98 KB        3/24/2003     2:32:00 PM
   tzdata2003a.tar.gz      132 KB       3/24/2003     2:32:00 PM
 
-ICU only uses the tzcodeYYYYV.tar.gz and tzdataYYYYV.tar.gz files,
+ICU only uses the tzdataYYYYV.tar.gz files,
 where YYYY is the year and V is the version letter ('a'...'z').
 
+This directory has partial contents of tzcode checked into ICU
+
 ----------------------------------------------------------------------
 HOWTO
 
-1. Obtain the current versions of tzcodeYYYYV.tar.gz (aka `tzcode')
-   and tzdataYYYYV.tar.gz (aka `tzdata') from the FTP site given
-   above.  Either manually download or use wget:
+0. Note, these instructions will only work on POSIX type systems.
 
-   $ cd {path_to}/icu/source/tools/tzcode
-   $ wget "ftp://elsie.nci.nih.gov/pub/tz*.tar.gz"
+1. Obtain the current versions of tzdataYYYYV.tar.gz (aka `tzdata') from
+   the FTP site given above.  Either manually download or use wget:
 
-2. Unpack tzcode and tzdata directly into the directory tzcode:
+   $ cd {path_to}/icu/source/tools/tzcode
+   $ wget "ftp://elsie.nci.nih.gov/pub/tzdata*.tar.gz"
 
-   $ tar xzvf tzcode*.tar.gz
-   $ tar xzvf tzdata*.tar.gz
+2. Copy only one tzdata*.tar.gz file into the icu/source/tools/tzcode/
+   directory (this directory).
 
    *** Make sure you only have ONE FILE named tzdata*.tar.gz in the
        directory.
-   *** Do NOT delete the tzdata*.tar.gz file.
-
-   The Makefile looks in the current directory to determine the
-   version of Olson data it is building by looking for tzdata*.tar.gz.
 
-3. Apply the ICU patch to zic.c:
+3. Build ICU normally. You will see a notice "updating zoneinfo.txt..."
 
-   $ patch < patch-icu-tzcode
+### Following instructions for ICU maintainers only ###
 
-   If patch complains at this point, there is a mismatch that must be
-   manually addressed.  See the CVS log of `patch-icu-tzcode' for
-   version details.
+4. Obtain the current version of tzcodeYYYY.tar.gz from the FTP site to
+   this directory.
 
-4. Build:
+5. Run make target "check-dump".  This target extract makes the original
+   tzcode and compile the original tzdata with icu supplemental data
+   (icuzones).  Then it makes zdump / icuzdump and dump all time
+   transitions for all ICU timezone to files under zdumpout / icuzdumpout
+   directory.  When they produce different results, the target returns
+   the error.
 
-   $ make icu_data
+6. Don't forget to check in the new zoneinfo.txt (from its location at
+   {path_to}/icu/source/data/misc/zoneinfo.txt) into SVN.
 
-5. Copy the data files to the correct location in the ICU4C/ICU4J
-   source trees:
-
-   $ cp zoneinfo.txt ../../../data/misc/
-   $ cp ZoneMetaData.java {path_to}/icu4j/src/com/ibm/icu/impl
-
-6. Rebuild ICU:
-
-   $ cd ../../../
-   $ {*make}
-
-7. Don't forget to check in the new zoneinfo.txt (from its location at
-   {path_to}/icu/source/data/misc/zoneinfo.txt) into CVS.
-
-----------------------------------------------------------------------
-HOWTO regenerate patch-icu-tzcode
-
-If you need to edit any of the tzcode* files, you will need to
-regenerate the patch file as follows.
-
-1. Follow the above instructions to extract and patch the tzcode*
-   files in {path_to}/icu/source/tools/tzcode.  Modify any of the
-   tzcode files.
-
-2. Extract a clean set of the tzcode* files into a new directory,
-   ../tzcode.orig/:
-
-   $ mkdir ../tzcode.orig
-   $ cd ../tzcode.orig
-   $ tar xzf ../tzcode/tzcode*.tar.gz
-   $ cd ../tzcode
-
-3. Compute diffs, ignoring files that are in only one directory:
-
-   $ diff -ur ../tzcode.orig . | grep -vE -e "^Only in " > patch-icu-tzcode
-
-4. Test the patch-icu-tzcode file by regenerating and diffing the
-   files again in another directory.  The expected output from the
-   final diff command is *nothing*.
-
-   $ mkdir ../tzcode.new
-   $ cd ../tzcode.new
-   $ tar xzf ../tzcode/tzcode*.tar.gz
-   $ patch < ../tzcode/patch-icu-tzcode
-   $ cd ../tzcode
-   $ diff -ur ../tzcode.new . | grep -vE -e "^Only in "
-
-5. Check in the new patch-icu-tzcode file.
-
-----------------------------------------------------------------------
-eof