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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 2011-09-16 15:47:21 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2011-09-16 15:47:21 +0000 |
| commit | adb0401dac41c81571722312d4586b2693f95aa6 (patch) | |
| tree | ea2b52e3c258d6b6d9356977c683c7f72a4a5fd5 /libgo/go/time/zoneinfo_plan9.go | |
| parent | 5548ca3540bccbc908a45942896d635ea5f1c23f (diff) | |
| download | gcc-adb0401dac41c81571722312d4586b2693f95aa6.zip gcc-adb0401dac41c81571722312d4586b2693f95aa6.tar.gz gcc-adb0401dac41c81571722312d4586b2693f95aa6.tar.bz2 | |
Update Go library to r60.
From-SVN: r178910
Diffstat (limited to 'libgo/go/time/zoneinfo_plan9.go')
| -rw-r--r-- | libgo/go/time/zoneinfo_plan9.go | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/libgo/go/time/zoneinfo_plan9.go b/libgo/go/time/zoneinfo_plan9.go new file mode 100644 index 0000000..3c3e7c4 --- /dev/null +++ b/libgo/go/time/zoneinfo_plan9.go @@ -0,0 +1,59 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Parse Plan 9 timezone(2) files. + +package time + +import ( + "os" + "strconv" + "strings" +) + +func parseZones(s string) (zt []zonetime) { + f := strings.Fields(s) + if len(f) < 4 { + return + } + + // standard timezone offset + o, err := strconv.Atoi(f[1]) + if err != nil { + return + } + std := &zone{name: f[0], utcoff: o, isdst: false} + + // alternate timezone offset + o, err = strconv.Atoi(f[3]) + if err != nil { + return + } + dst := &zone{name: f[2], utcoff: o, isdst: true} + + // transition time pairs + f = f[4:] + for i := 0; i < len(f); i++ { + z := std + if i%2 == 0 { + z = dst + } + t, err := strconv.Atoi(f[i]) + if err != nil { + return nil + } + t -= std.utcoff + zt = append(zt, zonetime{time: int32(t), zone: z}) + } + return +} + +func setupZone() { + t, err := os.Getenverror("timezone") + if err != nil { + // do nothing: use UTC + return + } + zones = parseZones(t) +} |