/usr/share/go-1.6/src/time/genzabbrs.go is in golang-1.6-src 1.6.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 | // Copyright 2013 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.
// +build ignore
//
// usage:
//
// go run genzabbrs.go -output zoneinfo_abbrs_windows.go
//
package main
import (
"bytes"
"encoding/xml"
"flag"
"go/format"
"io/ioutil"
"log"
"net/http"
"sort"
"text/template"
"time"
)
var filename = flag.String("output", "zoneinfo_abbrs_windows.go", "output file name")
// getAbbrs finds timezone abbreviations (standard and daylight saving time)
// for location l.
func getAbbrs(l *time.Location) (st, dt string) {
t := time.Date(time.Now().Year(), 0, 0, 0, 0, 0, 0, l)
abbr1, off1 := t.Zone()
for i := 0; i < 12; i++ {
t = t.AddDate(0, 1, 0)
abbr2, off2 := t.Zone()
if abbr1 != abbr2 {
if off2-off1 < 0 { // southern hemisphere
abbr1, abbr2 = abbr2, abbr1
}
return abbr1, abbr2
}
}
return abbr1, abbr1
}
type zone struct {
WinName string
UnixName string
StTime string
DSTime string
}
type zones []*zone
func (zs zones) Len() int { return len(zs) }
func (zs zones) Swap(i, j int) { zs[i], zs[j] = zs[j], zs[i] }
func (zs zones) Less(i, j int) bool { return zs[i].UnixName < zs[j].UnixName }
const wzURL = "http://unicode.org/cldr/data/common/supplemental/windowsZones.xml"
type MapZone struct {
Other string `xml:"other,attr"`
Territory string `xml:"territory,attr"`
Type string `xml:"type,attr"`
}
type SupplementalData struct {
Zones []MapZone `xml:"windowsZones>mapTimezones>mapZone"`
}
func readWindowsZones() (zones, error) {
r, err := http.Get(wzURL)
if err != nil {
return nil, err
}
defer r.Body.Close()
data, err := ioutil.ReadAll(r.Body)
if err != nil {
return nil, err
}
var sd SupplementalData
err = xml.Unmarshal(data, &sd)
if err != nil {
return nil, err
}
zs := make(zones, 0)
for _, z := range sd.Zones {
if z.Territory != "001" {
// to avoid dups. I don't know why.
continue
}
l, err := time.LoadLocation(z.Type)
if err != nil {
return nil, err
}
st, dt := getAbbrs(l)
zs = append(zs, &zone{
WinName: z.Other,
UnixName: z.Type,
StTime: st,
DSTime: dt,
})
}
return zs, nil
}
func main() {
flag.Parse()
zs, err := readWindowsZones()
if err != nil {
log.Fatal(err)
}
sort.Sort(zs)
var v = struct {
URL string
Zs zones
}{
wzURL,
zs,
}
var buf bytes.Buffer
err = template.Must(template.New("prog").Parse(prog)).Execute(&buf, v)
if err != nil {
log.Fatal(err)
}
data, err := format.Source(buf.Bytes())
if err != nil {
log.Fatal(err)
}
err = ioutil.WriteFile(*filename, data, 0644)
if err != nil {
log.Fatal(err)
}
}
const prog = `
// Copyright 2013 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.
// generated by genzabbrs.go from
// {{.URL}}
package time
type abbr struct {
std string
dst string
}
var abbrs = map[string]abbr{
{{range .Zs}} "{{.WinName}}": {"{{.StTime}}", "{{.DSTime}}"}, // {{.UnixName}}
{{end}}}
`
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