localLoc = Location{}
}

func ForceUSPacificForTesting() {
	ResetLocalOnceForTest()
	localOnce.Do(initTestingZone)
}

func ZoneinfoForTesting() *string {
	return zoneinfo
}

func ResetZoneinfoForTesting() {
	zoneinfo = nil
	zoneinfoOnce = sync.Once{}
}

var (
	DisablePlatformSources = disablePlatformSources
	GorootZoneSource       = gorootZoneSource
	ParseTimeZone          = parseTimeZone

The zoneinfo.zip archive contains time zone files compiled using
the code and data maintained as part of the IANA Time Zone Database.
The IANA asserts that the database is in the public domain.

For more information, see
https://www.iana.org/time-zones
ftp://ftp.iana.org/tz/code/tz-link.html
https://datatracker.ietf.org/doc/html/rfc6557

// Copyright 2023 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

// in wasip1 zoneinfo is managed by the runtime.
var platformZoneSources = []string{}

func initLocal() {
	localLoc.name = "Local"

	// set in the process's environment (if any).
	// This test runs in GOROOT/src/time, so GOROOT is "../..",
	// but it is theoretically possible
	sources := []string{"../../lib/time/zoneinfo.zip"}
	z, err := loadLocation("America/Los_Angeles", sources)
	if err != nil {
		panic("cannot load America/Los_Angeles for testing: " + err.Error() + "; you may want to use -tags=timetzdata")
	}
	z.name = "Local"

			t.Errorf("invalid Local location name for %q: got %q want %q", c.tz, time.Local, c.local)
		}
	}

	time.ResetLocalOnceForTest()
	// The file may not exist on Solaris 2 and IRIX 6.
	path := "/usr/share/zoneinfo/Asia/Shanghai"
	os.Setenv(env, path)
	if _, err := os.Stat(path); os.IsNotExist(err) {
		if time.Local.String() != "UTC" {
			t.Errorf(`invalid path should fallback to UTC: got %q want "UTC"`, time.Local)
		}
		return

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Parse "zoneinfo" time zone file.
// This is a fairly standard file format used on OS X, Linux, BSD, Sun, and others.
// See tzfile(5), https://en.wikipedia.org/wiki/Zoneinfo,
// and ftp://munnari.oz.au/pub/oldtz/

package time

import (
	"errors"
	"internal/bytealg"
	"runtime"
	"syscall"

			}
		}
		if found != 2 {
			t.Errorf("test must be updated for change to time.Location struct")
		}
	}
}

// equal is a small version of reflect.DeepEqual that we use to
// compare the values of zoneinfo unexported fields.
func equal(t *testing.T, f1, f2 reflect.Value) bool {
	switch f1.Type().Kind() {
	case reflect.Slice:
		if f1.Len() != f2.Len() {
			return false
		}
		for i := 0; i < f1.Len(); i++ {

}

// mktzdata src/time/tzdata/zzipdata.go:
//
//	package tzdata
//	const zipdata = "PK..."
func mktzdata(dir, file string) {
	zip := readfile(filepath.Join(dir, "../../../lib/time/zoneinfo.zip"))

	var buf strings.Builder
	writeHeader(&buf)
	fmt.Fprintf(&buf, "package tzdata\n")
	fmt.Fprintln(&buf)
	fmt.Fprintf(&buf, "const zipdata = %s\n", quote(zip))

		// Copy timezone file.
		//
		// Typical apps have the zoneinfo.zip in the root of their app bundle,
		// read by the time package as the working directory at initialization.
		// As we move the working directory to the GOROOT pkg directory, we
		// install the zoneinfo.zip file in the pkgpath.
		err := cp(
			filepath.Join(dstbase, pkgpath),
			filepath.Join(cwd, "lib", "time", "zoneinfo.zip"),
		)
		if err != nil {
			return "", err

package time

import (
	"errors"
	"internal/syscall/windows/registry"
	"syscall"
)

var platformZoneSources []string // none: Windows uses system calls instead

// 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