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Diffstat (limited to 'src/pkg/time/zoneinfo_windows.go')
-rw-r--r--src/pkg/time/zoneinfo_windows.go270
1 files changed, 0 insertions, 270 deletions
diff --git a/src/pkg/time/zoneinfo_windows.go b/src/pkg/time/zoneinfo_windows.go
deleted file mode 100644
index 6046743e6..000000000
--- a/src/pkg/time/zoneinfo_windows.go
+++ /dev/null
@@ -1,270 +0,0 @@
-// Copyright 2009 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.
-
-package time
-
-import (
- "errors"
- "runtime"
- "syscall"
- "unsafe"
-)
-
-// TODO(rsc): Fall back to copy of zoneinfo files.
-
-// BUG(brainman,rsc): On Windows, the operating system does not provide complete
-// time zone information.
-// The implementation assumes that this year's rules for daylight savings
-// time apply to all previous and future years as well.
-
-// getKeyValue retrieves the string value kname associated with the open registry key kh.
-func getKeyValue(kh syscall.Handle, kname string) (string, error) {
- var buf [50]uint16 // buf needs to be large enough to fit zone descriptions
- var typ uint32
- n := uint32(len(buf) * 2) // RegQueryValueEx's signature expects array of bytes, not uint16
- p, _ := syscall.UTF16PtrFromString(kname)
- if err := syscall.RegQueryValueEx(kh, p, nil, &typ, (*byte)(unsafe.Pointer(&buf[0])), &n); err != nil {
- return "", err
- }
- if typ != syscall.REG_SZ { // null terminated strings only
- return "", errors.New("Key is not string")
- }
- return syscall.UTF16ToString(buf[:]), nil
-}
-
-// matchZoneKey checks if stdname and dstname match the corresponding "Std"
-// and "Dlt" key values in the kname key stored under the open registry key zones.
-func matchZoneKey(zones syscall.Handle, kname string, stdname, dstname string) (matched bool, err2 error) {
- var h syscall.Handle
- p, _ := syscall.UTF16PtrFromString(kname)
- if err := syscall.RegOpenKeyEx(zones, p, 0, syscall.KEY_READ, &h); err != nil {
- return false, err
- }
- defer syscall.RegCloseKey(h)
-
- s, err := getKeyValue(h, "Std")
- if err != nil {
- return false, err
- }
- if s != stdname {
- return false, nil
- }
- s, err = getKeyValue(h, "Dlt")
- if err != nil {
- return false, err
- }
- if s != dstname && dstname != stdname {
- return false, nil
- }
- return true, nil
-}
-
-// toEnglishName searches the registry for an English name of a time zone
-// whose zone names are stdname and dstname and returns the English name.
-func toEnglishName(stdname, dstname string) (string, error) {
- var zones syscall.Handle
- p, _ := syscall.UTF16PtrFromString(`SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones`)
- if err := syscall.RegOpenKeyEx(syscall.HKEY_LOCAL_MACHINE, p, 0, syscall.KEY_READ, &zones); err != nil {
- return "", err
- }
- defer syscall.RegCloseKey(zones)
-
- var count uint32
- if err := syscall.RegQueryInfoKey(zones, nil, nil, nil, &count, nil, nil, nil, nil, nil, nil, nil); err != nil {
- return "", err
- }
-
- var buf [50]uint16 // buf needs to be large enough to fit zone descriptions
- for i := uint32(0); i < count; i++ {
- n := uint32(len(buf))
- if syscall.RegEnumKeyEx(zones, i, &buf[0], &n, nil, nil, nil, nil) != nil {
- continue
- }
- kname := syscall.UTF16ToString(buf[:])
- matched, err := matchZoneKey(zones, kname, stdname, dstname)
- if err == nil && matched {
- return kname, nil
- }
- }
- return "", errors.New(`English name for time zone "` + stdname + `" not found in registry`)
-}
-
-// extractCAPS extracts capital letters from description desc.
-func extractCAPS(desc string) string {
- var short []rune
- for _, c := range desc {
- if 'A' <= c && c <= 'Z' {
- short = append(short, rune(c))
- }
- }
- return string(short)
-}
-
-// abbrev returns the abbreviations to use for the given zone z.
-func abbrev(z *syscall.Timezoneinformation) (std, dst string) {
- stdName := syscall.UTF16ToString(z.StandardName[:])
- a, ok := abbrs[stdName]
- if !ok {
- dstName := syscall.UTF16ToString(z.DaylightName[:])
- // Perhaps stdName is not English. Try to convert it.
- englishName, err := toEnglishName(stdName, dstName)
- if err == nil {
- a, ok = abbrs[englishName]
- if ok {
- return a.std, a.dst
- }
- }
- // fallback to using capital letters
- return extractCAPS(stdName), extractCAPS(dstName)
- }
- return a.std, a.dst
-}
-
-// pseudoUnix returns the pseudo-Unix time (seconds since Jan 1 1970 *LOCAL TIME*)
-// denoted by the system date+time d in the given year.
-// It is up to the caller to convert this local time into a UTC-based time.
-func pseudoUnix(year int, d *syscall.Systemtime) int64 {
- // Windows specifies daylight savings information in "day in month" format:
- // d.Month is month number (1-12)
- // d.DayOfWeek is appropriate weekday (Sunday=0 to Saturday=6)
- // d.Day is week within the month (1 to 5, where 5 is last week of the month)
- // d.Hour, d.Minute and d.Second are absolute time
- day := 1
- t := Date(year, Month(d.Month), day, int(d.Hour), int(d.Minute), int(d.Second), 0, UTC)
- i := int(d.DayOfWeek) - int(t.Weekday())
- if i < 0 {
- i += 7
- }
- day += i
- if week := int(d.Day) - 1; week < 4 {
- day += week * 7
- } else {
- // "Last" instance of the day.
- day += 4 * 7
- if day > daysIn(Month(d.Month), year) {
- day -= 7
- }
- }
- return t.sec + int64(day-1)*secondsPerDay + internalToUnix
-}
-
-func initLocalFromTZI(i *syscall.Timezoneinformation) {
- l := &localLoc
-
- nzone := 1
- if i.StandardDate.Month > 0 {
- nzone++
- }
- l.zone = make([]zone, nzone)
-
- stdname, dstname := abbrev(i)
-
- std := &l.zone[0]
- std.name = stdname
- if nzone == 1 {
- // No daylight savings.
- std.offset = -int(i.Bias) * 60
- l.cacheStart = alpha
- l.cacheEnd = omega
- l.cacheZone = std
- l.tx = make([]zoneTrans, 1)
- l.tx[0].when = l.cacheStart
- l.tx[0].index = 0
- return
- }
-
- // StandardBias must be ignored if StandardDate is not set,
- // so this computation is delayed until after the nzone==1
- // return above.
- std.offset = -int(i.Bias+i.StandardBias) * 60
-
- dst := &l.zone[1]
- dst.name = dstname
- dst.offset = -int(i.Bias+i.DaylightBias) * 60
- dst.isDST = true
-
- // Arrange so that d0 is first transition date, d1 second,
- // i0 is index of zone after first transition, i1 second.
- d0 := &i.StandardDate
- d1 := &i.DaylightDate
- i0 := 0
- i1 := 1
- if d0.Month > d1.Month {
- d0, d1 = d1, d0
- i0, i1 = i1, i0
- }
-
- // 2 tx per year, 100 years on each side of this year
- l.tx = make([]zoneTrans, 400)
-
- t := Now().UTC()
- year := t.Year()
- txi := 0
- for y := year - 100; y < year+100; y++ {
- tx := &l.tx[txi]
- tx.when = pseudoUnix(y, d0) - int64(l.zone[i1].offset)
- tx.index = uint8(i0)
- txi++
-
- tx = &l.tx[txi]
- tx.when = pseudoUnix(y, d1) - int64(l.zone[i0].offset)
- tx.index = uint8(i1)
- txi++
- }
-}
-
-var usPacific = syscall.Timezoneinformation{
- Bias: 8 * 60,
- StandardName: [32]uint16{
- 'P', 'a', 'c', 'i', 'f', 'i', 'c', ' ', 'S', 't', 'a', 'n', 'd', 'a', 'r', 'd', ' ', 'T', 'i', 'm', 'e',
- },
- StandardDate: syscall.Systemtime{Month: 11, Day: 1, Hour: 2},
- DaylightName: [32]uint16{
- 'P', 'a', 'c', 'i', 'f', 'i', 'c', ' ', 'D', 'a', 'y', 'l', 'i', 'g', 'h', 't', ' ', 'T', 'i', 'm', 'e',
- },
- DaylightDate: syscall.Systemtime{Month: 3, Day: 2, Hour: 2},
- DaylightBias: -60,
-}
-
-var aus = syscall.Timezoneinformation{
- Bias: -10 * 60,
- StandardName: [32]uint16{
- 'A', 'U', 'S', ' ', 'E', 'a', 's', 't', 'e', 'r', 'n', ' ', 'S', 't', 'a', 'n', 'd', 'a', 'r', 'd', ' ', 'T', 'i', 'm', 'e',
- },
- StandardDate: syscall.Systemtime{Month: 4, Day: 1, Hour: 3},
- DaylightName: [32]uint16{
- 'A', 'U', 'S', ' ', 'E', 'a', 's', 't', 'e', 'r', 'n', ' ', 'D', 'a', 'y', 'l', 'i', 'g', 'h', 't', ' ', 'T', 'i', 'm', 'e',
- },
- DaylightDate: syscall.Systemtime{Month: 10, Day: 1, Hour: 2},
- DaylightBias: -60,
-}
-
-func initTestingZone() {
- initLocalFromTZI(&usPacific)
-}
-
-func initAusTestingZone() {
- initLocalFromTZI(&aus)
-}
-
-func initLocal() {
- var i syscall.Timezoneinformation
- if _, err := syscall.GetTimeZoneInformation(&i); err != nil {
- localLoc.name = "UTC"
- return
- }
- initLocalFromTZI(&i)
-}
-
-func loadLocation(name string) (*Location, error) {
- if z, err := loadZoneFile(runtime.GOROOT()+`\lib\time\zoneinfo.zip`, name); err == nil {
- z.name = name
- return z, nil
- }
- return nil, errors.New("unknown time zone " + name)
-}
-
-func forceZipFileForTesting(zipOnly bool) {
- // We only use the zip file anyway.
-}