//go:build ignore

// Mkzip writes a zoneinfo.zip with the content of the current directory
// and its subdirectories, with no compression, suitable for package time.
//
// Usage:
//
//	go run ../../mkzip.go ../../zoneinfo.zip
//
// We use this program instead of 'zip -0 -r ../../zoneinfo.zip *' to get
// a reproducible generator that does not depend on which version of the
// external zip tool is used or the ordering of file names in a directory

			}
			data, err := repo.ReadFile(f[1], f[2], 10<<20)
			if err != nil {
				fmt.Fprintf(os.Stderr, "?%s\n", err)
				continue
			}
			os.Stdout.Write(data)

		case "zip":
			if len(f) != 4 {
				fmt.Fprintf(os.Stderr, "?usage: zip rev subdir output\n")
				continue
			}
			subdir := f[2]
			if subdir == "-" {
				subdir = ""
			}
			rc, err := repo.ReadZip(f[1], subdir, 10<<20)
			if err != nil {

// license that can be found in the LICENSE file.

package zip_test

import (
	"archive/zip"
	"bytes"
	"compress/flate"
	"fmt"
	"io"
	"log"
	"os"
)

func ExampleWriter() {
	// Create a buffer to write our archive to.
	buf := new(bytes.Buffer)

	// Create a new zip archive.
	w := zip.NewWriter(buf)

	// Add some files to the archive.
	var files = []struct {
		Name, Body string
	}{

		return nil
	}
	if modload.MainModules.Contains(mod.Path) {
		return nil
	}
	var errs []error
	zip, zipErr := modfetch.CachePath(ctx, mod, "zip")
	if zipErr == nil {
		_, zipErr = os.Stat(zip)
	}
	dir, dirErr := modfetch.DownloadDir(ctx, mod)
	data, err := os.ReadFile(zip + "hash")
	if err != nil {
		if zipErr != nil && errors.Is(zipErr, fs.ErrNotExist) &&

	"errors"
	"fmt"
	"internal/txtar"
	"io"
	"log"
	"net/http"
	"os"
	"os/exec"
	"path/filepath"
	"runtime"
	"strconv"
	"strings"
	"time"

	"golang.org/x/mod/module"
	"golang.org/x/mod/zip"
)

// newScriptEngine returns a script engine augmented with commands for
// reproducing version-control repositories by replaying commits.
func newScriptEngine() *script.Engine {
	conds := script.DefaultConds()

// Package zip_sum_test tests that the module zip files produced by modfetch
// have consistent content sums. Ideally the zip files themselves are also
// stable over time, though this is not strictly necessary.
//
// This test loads a table from testdata/zip_sums.csv. The table has columns
// for module path, version, content sum, and zip file hash. The table

	// Scrape the exported files out of the filesystem and encode them in the zipfile.

	// “All files in the zip file are expected to be
	// nested in a single top-level directory, whose name is not specified.”
	// We'll (arbitrarily) choose the base of the remote path.
	basePath := path.Join(path.Base(remote), subdir)

	zw := zip.NewWriter(dst)
	for _, e := range list.Entries {
		if e.Kind != "file" {
			continue
		}

func (r *toolchainRepo) GoMod(ctx context.Context, version string) (data []byte, err error) {
	return []byte("module " + r.path + "\n"), nil
}

func (r *toolchainRepo) Zip(ctx context.Context, dst io.Writer, version string) error {
	return fmt.Errorf("invalid use of toolchainRepo: Zip")
}

func (r *toolchainRepo) CheckReuse(ctx context.Context, old *codehost.Origin) error {
	return fmt.Errorf("invalid use of toolchainRepo: CheckReuse")
}

// Copyright 2010 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 zip

import (
	"compress/flate"
	"errors"
	"io"
	"sync"
)

// A Compressor returns a new compressing writer, writing to w.
// The WriteCloser's Close method must be used to flush pending data to w.
// The Compressor itself must be safe to invoke from multiple goroutines

//
//	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))

	writefile(buf.String(), file, writeSkipSame)
}