Add golang.org/x/net/http2 to the dependencies

vendor/golang.org/x/text/gen.go

@@ -0,0 +1,319 @@
+// Copyright 2015 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
+
+// gen runs go generate on Unicode- and CLDR-related package in the text
+// repositories, taking into account dependencies and versions.
+package main
+
+import (
+	"bytes"
+	"flag"
+	"fmt"
+	"go/build"
+	"go/format"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path"
+	"path/filepath"
+	"regexp"
+	"runtime"
+	"strings"
+	"sync"
+	"unicode"
+
+	"golang.org/x/text/collate"
+	"golang.org/x/text/internal/gen"
+	"golang.org/x/text/language"
+)
+
+var (
+	verbose     = flag.Bool("v", false, "verbose output")
+	force       = flag.Bool("force", false, "ignore failing dependencies")
+	doCore      = flag.Bool("core", false, "force an update to core")
+	excludeList = flag.String("exclude", "",
+		"comma-separated list of packages to exclude")
+
+	// The user can specify a selection of packages to build on the command line.
+	args []string
+)
+
+func exclude(pkg string) bool {
+	if len(args) > 0 {
+		return !contains(args, pkg)
+	}
+	return contains(strings.Split(*excludeList, ","), pkg)
+}
+
+// TODO:
+// - Better version handling.
+// - Generate tables for the core unicode package?
+// - Add generation for encodings. This requires some retooling here and there.
+// - Running repo-wide "long" tests.
+
+var vprintf = fmt.Printf
+
+func main() {
+	gen.Init()
+	args = flag.Args()
+	if !*verbose {
+		// Set vprintf to a no-op.
+		vprintf = func(string, ...interface{}) (int, error) { return 0, nil }
+	}
+
+	// TODO: create temporary cache directory to load files and create and set
+	// a "cache" option if the user did not specify the UNICODE_DIR environment
+	// variable. This will prevent duplicate downloads and also will enable long
+	// tests, which really need to be run after each generated package.
+
+	updateCore := *doCore
+	if gen.UnicodeVersion() != unicode.Version {
+		fmt.Printf("Requested Unicode version %s; core unicode version is %s.\n",
+			gen.UnicodeVersion(),
+			unicode.Version)
+		c := collate.New(language.Und, collate.Numeric)
+		if c.CompareString(gen.UnicodeVersion(), unicode.Version) < 0 && !*force {
+			os.Exit(2)
+		}
+		updateCore = true
+		goroot := os.Getenv("GOROOT")
+		appendToFile(
+			filepath.Join(goroot, "api", "except.txt"),
+			fmt.Sprintf("pkg unicode, const Version = %q\n", unicode.Version),
+		)
+		const lines = `pkg unicode, const Version = %q
+// TODO: add a new line of the following form for each new script and property.
+pkg unicode, var <new script or property> *RangeTable
+`
+		appendToFile(
+			filepath.Join(goroot, "api", "next.txt"),
+			fmt.Sprintf(lines, gen.UnicodeVersion()),
+		)
+	}
+
+	var unicode = &dependency{}
+	if updateCore {
+		fmt.Printf("Updating core to version %s...\n", gen.UnicodeVersion())
+		unicode = generate("unicode")
+
+		// Test some users of the unicode packages, especially the ones that
+		// keep a mirrored table. These may need to be corrected by hand.
+		generate("regexp", unicode)
+		generate("strconv", unicode) // mimics Unicode table
+		generate("strings", unicode)
+		generate("testing", unicode) // mimics Unicode table
+	}
+
+	var (
+		cldr       = generate("./unicode/cldr", unicode)
+		language   = generate("./language", cldr)
+		internal   = generate("./internal", unicode, language)
+		norm       = generate("./unicode/norm", unicode)
+		rangetable = generate("./unicode/rangetable", unicode)
+		cases      = generate("./cases", unicode, norm, language, rangetable)
+		width      = generate("./width", unicode)
+		bidi       = generate("./unicode/bidi", unicode, norm, rangetable)
+		mib        = generate("./encoding/internal/identifier", unicode)
+		number     = generate("./internal/number", unicode, cldr, language, internal)
+		_          = generate("./encoding/htmlindex", unicode, language, mib)
+		_          = generate("./encoding/ianaindex", unicode, language, mib)
+		_          = generate("./secure/precis", unicode, norm, rangetable, cases, width, bidi)
+		_          = generate("./internal/cldrtree", language)
+		_          = generate("./currency", unicode, cldr, language, internal, number)
+		_          = generate("./feature/plural", unicode, cldr, language, internal, number)
+		_          = generate("./internal/export/idna", unicode, bidi, norm)
+		_          = generate("./language/display", unicode, cldr, language, internal, number)
+		_          = generate("./collate", unicode, norm, cldr, language, rangetable)
+		_          = generate("./search", unicode, norm, cldr, language, rangetable)
+	)
+	all.Wait()
+
+	// Copy exported packages to the destination golang.org repo.
+	copyExported("golang.org/x/net/idna")
+
+	if updateCore {
+		copyVendored()
+	}
+
+	if hasErrors {
+		fmt.Println("FAIL")
+		os.Exit(1)
+	}
+	vprintf("SUCCESS\n")
+}
+
+func appendToFile(file, text string) {
+	fmt.Println("Augmenting", file)
+	w, err := os.OpenFile(file, os.O_APPEND|os.O_WRONLY, 0600)
+	if err != nil {
+		fmt.Println("Failed to open file:", err)
+		os.Exit(1)
+	}
+	defer w.Close()
+	if _, err := w.WriteString(text); err != nil {
+		fmt.Println("Failed to write to file:", err)
+		os.Exit(1)
+	}
+}
+
+var (
+	all       sync.WaitGroup
+	hasErrors bool
+)
+
+type dependency struct {
+	sync.WaitGroup
+	hasErrors bool
+}
+
+func generate(pkg string, deps ...*dependency) *dependency {
+	var wg dependency
+	if exclude(pkg) {
+		return &wg
+	}
+	wg.Add(1)
+	all.Add(1)
+	go func() {
+		defer wg.Done()
+		defer all.Done()
+		// Wait for dependencies to finish.
+		for _, d := range deps {
+			d.Wait()
+			if d.hasErrors && !*force {
+				fmt.Printf("--- ABORT: %s\n", pkg)
+				wg.hasErrors = true
+				return
+			}
+		}
+		vprintf("=== GENERATE %s\n", pkg)
+		args := []string{"generate"}
+		if *verbose {
+			args = append(args, "-v")
+		}
+		args = append(args, pkg)
+		cmd := exec.Command(filepath.Join(runtime.GOROOT(), "bin", "go"), args...)
+		w := &bytes.Buffer{}
+		cmd.Stderr = w
+		cmd.Stdout = w
+		if err := cmd.Run(); err != nil {
+			fmt.Printf("--- FAIL: %s:\n\t%v\n\tError: %v\n", pkg, indent(w), err)
+			hasErrors = true
+			wg.hasErrors = true
+			return
+		}
+
+		vprintf("=== TEST %s\n", pkg)
+		args[0] = "test"
+		cmd = exec.Command(filepath.Join(runtime.GOROOT(), "bin", "go"), args...)
+		wt := &bytes.Buffer{}
+		cmd.Stderr = wt
+		cmd.Stdout = wt
+		if err := cmd.Run(); err != nil {
+			fmt.Printf("--- FAIL: %s:\n\t%v\n\tError: %v\n", pkg, indent(wt), err)
+			hasErrors = true
+			wg.hasErrors = true
+			return
+		}
+		vprintf("--- SUCCESS: %s\n\t%v\n", pkg, indent(w))
+		fmt.Print(wt.String())
+	}()
+	return &wg
+}
+
+// copyExported copies a package in x/text/internal/export to the
+// destination repository.
+func copyExported(p string) {
+	copyPackage(
+		filepath.Join("internal", "export", path.Base(p)),
+		filepath.Join("..", filepath.FromSlash(p[len("golang.org/x"):])),
+		"golang.org/x/text/internal/export/"+path.Base(p),
+		p)
+}
+
+// copyVendored copies packages used by Go core into the vendored directory.
+func copyVendored() {
+	root := filepath.Join(build.Default.GOROOT, filepath.FromSlash("src/vendor/golang_org/x"))
+
+	err := filepath.Walk(root, func(dir string, info os.FileInfo, err error) error {
+		if err != nil || !info.IsDir() || root == dir {
+			return err
+		}
+		src := dir[len(root)+1:]
+		const slash = string(filepath.Separator)
+		if c := strings.Split(src, slash); c[0] == "text" {
+			// Copy a text repo package from its normal location.
+			src = strings.Join(c[1:], slash)
+		} else {
+			// Copy the vendored package if it exists in the export directory.
+			src = filepath.Join("internal", "export", filepath.Base(src))
+		}
+		copyPackage(src, dir, "golang.org", "golang_org")
+		return nil
+	})
+	if err != nil {
+		fmt.Printf("Seeding directory %s has failed %v:", root, err)
+		os.Exit(1)
+	}
+}
+
+// goGenRE is used to remove go:generate lines.
+var goGenRE = regexp.MustCompile("//go:generate[^\n]*\n")
+
+// copyPackage copies relevant files from a directory in x/text to the
+// destination package directory. The destination package is assumed to have
+// the same name. For each copied file go:generate lines are removed and
+// and package comments are rewritten to the new path.
+func copyPackage(dirSrc, dirDst, search, replace string) {
+	err := filepath.Walk(dirSrc, func(file string, info os.FileInfo, err error) error {
+		base := filepath.Base(file)
+		if err != nil || info.IsDir() ||
+			!strings.HasSuffix(base, ".go") ||
+			strings.HasSuffix(base, "_test.go") ||
+			// Don't process subdirectories.
+			filepath.Dir(file) != dirSrc {
+			return nil
+		}
+		b, err := ioutil.ReadFile(file)
+		if err != nil || bytes.Contains(b, []byte("\n// +build ignore")) {
+			return err
+		}
+		// Fix paths.
+		b = bytes.Replace(b, []byte(search), []byte(replace), -1)
+		// Remove go:generate lines.
+		b = goGenRE.ReplaceAllLiteral(b, nil)
+		comment := "// Code generated by running \"go generate\" in golang.org/x/text. DO NOT EDIT.\n\n"
+		if *doCore {
+			comment = "// Code generated by running \"go run gen.go -core\" in golang.org/x/text. DO NOT EDIT.\n\n"
+		}
+		if !bytes.HasPrefix(b, []byte(comment)) {
+			b = append([]byte(comment), b...)
+		}
+		if b, err = format.Source(b); err != nil {
+			fmt.Println("Failed to format file:", err)
+			os.Exit(1)
+		}
+		file = filepath.Join(dirDst, base)
+		vprintf("=== COPY %s\n", file)
+		return ioutil.WriteFile(file, b, 0666)
+	})
+	if err != nil {
+		fmt.Println("Copying exported files failed:", err)
+		os.Exit(1)
+	}
+}
+
+func contains(a []string, s string) bool {
+	for _, e := range a {
+		if s == e {
+			return true
+		}
+	}
+	return false
+}
+
+func indent(b *bytes.Buffer) string {
+	return strings.Replace(strings.TrimSpace(b.String()), "\n", "\n\t", -1)
+}