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reading tzdatabase for timezone definitions

Posted on 2014-04-10
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Last Modified: 2015-05-28
Hi Experts,
I need to programmatically read timezone info.  For example, if given America/New_York, I want to get all the following information.

"America/New_York","EST","Eastern Standard Time","EDT","Eastern Daylight Time","-05:00:00","+01:00:00","2;0;3","+02:00:00","1;0;11","+02:00:00"
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Question by:ambuli
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jkr earned 500 total points
ID: 39992200
You will find all necessary source code at the official page for the tz db: http://www.iana.org/time-zones - or a little more precise at http://www.iana.org/time-zones/repository/releases/tzcode2014b.tar.gz

See also http://en.wikipedia.org/wiki/Tz_database#Data_structure

The reference source code includes such a compiler called zic (zone information compiler), as well as code to read those files and use them in standard APIs such as localtime() and mktime().
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by:ambuli
ID: 39992368
Thank you JKR.  Is there any library APIs.   I am looking at the code for zdump but that seems very complicated....
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LVL 86

Assisted Solution

by:jkr
jkr earned 500 total points
ID: 39992988
I am afraid that 'zdump.c' really seems to be what you are looking for - however it's quite poorly documented :-/
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