1 // Copyright 2009 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
5 // +build aix darwin,386 darwin,amd64 dragonfly freebsd hurd linux,!android netbsd openbsd solaris
7 // Parse "zoneinfo" time zone file.
8 // This is a fairly standard file format used on OS X, Linux, BSD, Sun, and others.
9 // See tzfile(5), https://en.wikipedia.org/wiki/Zoneinfo,
10 // and ftp://munnari.oz.au/pub/oldtz/
19 // Many systems use /usr/share/zoneinfo, Solaris 2 has
20 // /usr/share/lib/zoneinfo, IRIX 6 has /usr/lib/locale/TZ.
21 var zoneSources
= []string{
22 "/usr/share/zoneinfo/",
23 "/usr/share/lib/zoneinfo/",
24 "/usr/lib/locale/TZ/",
25 runtime
.GOROOT() + "/lib/time/zoneinfo.zip",
29 // consult $TZ to find the time zone to use.
30 // no $TZ means use the system default /etc/localtime.
31 // $TZ="" means use UTC.
32 // $TZ="foo" means use /usr/share/zoneinfo/foo.
34 tz
, ok
:= syscall
.Getenv("TZ")
37 z
, err
:= loadLocation("localtime", []string{"/etc/"})
40 localLoc
.name
= "Local"
43 case tz
!= "" && tz
!= "UTC":
44 if z
, err
:= loadLocation(tz
, zoneSources
); err
== nil {