initial add - go fmt on grpc
Change-Id: Ib0afadd2fe5571d1456a091f94f5644458f7d3f4
diff --git a/vendor/golang.org/x/text/internal/gen/code.go b/vendor/golang.org/x/text/internal/gen/code.go
new file mode 100644
index 0000000..75435c9
--- /dev/null
+++ b/vendor/golang.org/x/text/internal/gen/code.go
@@ -0,0 +1,375 @@
+// 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.
+
+package gen
+
+import (
+ "bytes"
+ "encoding/gob"
+ "fmt"
+ "hash"
+ "hash/fnv"
+ "io"
+ "log"
+ "os"
+ "reflect"
+ "strings"
+ "unicode"
+ "unicode/utf8"
+)
+
+// This file contains utilities for generating code.
+
+// TODO: other write methods like:
+// - slices, maps, types, etc.
+
+// CodeWriter is a utility for writing structured code. It computes the content
+// hash and size of written content. It ensures there are newlines between
+// written code blocks.
+type CodeWriter struct {
+ buf bytes.Buffer
+ Size int
+ Hash hash.Hash32 // content hash
+ gob *gob.Encoder
+ // For comments we skip the usual one-line separator if they are followed by
+ // a code block.
+ skipSep bool
+}
+
+func (w *CodeWriter) Write(p []byte) (n int, err error) {
+ return w.buf.Write(p)
+}
+
+// NewCodeWriter returns a new CodeWriter.
+func NewCodeWriter() *CodeWriter {
+ h := fnv.New32()
+ return &CodeWriter{Hash: h, gob: gob.NewEncoder(h)}
+}
+
+// WriteGoFile appends the buffer with the total size of all created structures
+// and writes it as a Go file to the given file with the given package name.
+func (w *CodeWriter) WriteGoFile(filename, pkg string) {
+ f, err := os.Create(filename)
+ if err != nil {
+ log.Fatalf("Could not create file %s: %v", filename, err)
+ }
+ defer f.Close()
+ if _, err = w.WriteGo(f, pkg, ""); err != nil {
+ log.Fatalf("Error writing file %s: %v", filename, err)
+ }
+}
+
+// WriteVersionedGoFile appends the buffer with the total size of all created
+// structures and writes it as a Go file to the given file with the given
+// package name and build tags for the current Unicode version,
+func (w *CodeWriter) WriteVersionedGoFile(filename, pkg string) {
+ tags := buildTags()
+ if tags != "" {
+ pattern := fileToPattern(filename)
+ updateBuildTags(pattern)
+ filename = fmt.Sprintf(pattern, UnicodeVersion())
+ }
+ f, err := os.Create(filename)
+ if err != nil {
+ log.Fatalf("Could not create file %s: %v", filename, err)
+ }
+ defer f.Close()
+ if _, err = w.WriteGo(f, pkg, tags); err != nil {
+ log.Fatalf("Error writing file %s: %v", filename, err)
+ }
+}
+
+// WriteGo appends the buffer with the total size of all created structures and
+// writes it as a Go file to the given writer with the given package name.
+func (w *CodeWriter) WriteGo(out io.Writer, pkg, tags string) (n int, err error) {
+ sz := w.Size
+ if sz > 0 {
+ w.WriteComment("Total table size %d bytes (%dKiB); checksum: %X\n", sz, sz/1024, w.Hash.Sum32())
+ }
+ defer w.buf.Reset()
+ return WriteGo(out, pkg, tags, w.buf.Bytes())
+}
+
+func (w *CodeWriter) printf(f string, x ...interface{}) {
+ fmt.Fprintf(w, f, x...)
+}
+
+func (w *CodeWriter) insertSep() {
+ if w.skipSep {
+ w.skipSep = false
+ return
+ }
+ // Use at least two newlines to ensure a blank space between the previous
+ // block. WriteGoFile will remove extraneous newlines.
+ w.printf("\n\n")
+}
+
+// WriteComment writes a comment block. All line starts are prefixed with "//".
+// Initial empty lines are gobbled. The indentation for the first line is
+// stripped from consecutive lines.
+func (w *CodeWriter) WriteComment(comment string, args ...interface{}) {
+ s := fmt.Sprintf(comment, args...)
+ s = strings.Trim(s, "\n")
+
+ // Use at least two newlines to ensure a blank space between the previous
+ // block. WriteGoFile will remove extraneous newlines.
+ w.printf("\n\n// ")
+ w.skipSep = true
+
+ // strip first indent level.
+ sep := "\n"
+ for ; len(s) > 0 && (s[0] == '\t' || s[0] == ' '); s = s[1:] {
+ sep += s[:1]
+ }
+
+ strings.NewReplacer(sep, "\n// ", "\n", "\n// ").WriteString(w, s)
+
+ w.printf("\n")
+}
+
+func (w *CodeWriter) writeSizeInfo(size int) {
+ w.printf("// Size: %d bytes\n", size)
+}
+
+// WriteConst writes a constant of the given name and value.
+func (w *CodeWriter) WriteConst(name string, x interface{}) {
+ w.insertSep()
+ v := reflect.ValueOf(x)
+
+ switch v.Type().Kind() {
+ case reflect.String:
+ w.printf("const %s %s = ", name, typeName(x))
+ w.WriteString(v.String())
+ w.printf("\n")
+ default:
+ w.printf("const %s = %#v\n", name, x)
+ }
+}
+
+// WriteVar writes a variable of the given name and value.
+func (w *CodeWriter) WriteVar(name string, x interface{}) {
+ w.insertSep()
+ v := reflect.ValueOf(x)
+ oldSize := w.Size
+ sz := int(v.Type().Size())
+ w.Size += sz
+
+ switch v.Type().Kind() {
+ case reflect.String:
+ w.printf("var %s %s = ", name, typeName(x))
+ w.WriteString(v.String())
+ case reflect.Struct:
+ w.gob.Encode(x)
+ fallthrough
+ case reflect.Slice, reflect.Array:
+ w.printf("var %s = ", name)
+ w.writeValue(v)
+ w.writeSizeInfo(w.Size - oldSize)
+ default:
+ w.printf("var %s %s = ", name, typeName(x))
+ w.gob.Encode(x)
+ w.writeValue(v)
+ w.writeSizeInfo(w.Size - oldSize)
+ }
+ w.printf("\n")
+}
+
+func (w *CodeWriter) writeValue(v reflect.Value) {
+ x := v.Interface()
+ switch v.Kind() {
+ case reflect.String:
+ w.WriteString(v.String())
+ case reflect.Array:
+ // Don't double count: callers of WriteArray count on the size being
+ // added, so we need to discount it here.
+ w.Size -= int(v.Type().Size())
+ w.writeSlice(x, true)
+ case reflect.Slice:
+ w.writeSlice(x, false)
+ case reflect.Struct:
+ w.printf("%s{\n", typeName(v.Interface()))
+ t := v.Type()
+ for i := 0; i < v.NumField(); i++ {
+ w.printf("%s: ", t.Field(i).Name)
+ w.writeValue(v.Field(i))
+ w.printf(",\n")
+ }
+ w.printf("}")
+ default:
+ w.printf("%#v", x)
+ }
+}
+
+// WriteString writes a string literal.
+func (w *CodeWriter) WriteString(s string) {
+ io.WriteString(w.Hash, s) // content hash
+ w.Size += len(s)
+
+ const maxInline = 40
+ if len(s) <= maxInline {
+ w.printf("%q", s)
+ return
+ }
+
+ // We will render the string as a multi-line string.
+ const maxWidth = 80 - 4 - len(`"`) - len(`" +`)
+
+ // When starting on its own line, go fmt indents line 2+ an extra level.
+ n, max := maxWidth, maxWidth-4
+
+ // As per https://golang.org/issue/18078, the compiler has trouble
+ // compiling the concatenation of many strings, s0 + s1 + s2 + ... + sN,
+ // for large N. We insert redundant, explicit parentheses to work around
+ // that, lowering the N at any given step: (s0 + s1 + ... + s63) + (s64 +
+ // ... + s127) + etc + (etc + ... + sN).
+ explicitParens, extraComment := len(s) > 128*1024, ""
+ if explicitParens {
+ w.printf(`(`)
+ extraComment = "; the redundant, explicit parens are for https://golang.org/issue/18078"
+ }
+
+ // Print "" +\n, if a string does not start on its own line.
+ b := w.buf.Bytes()
+ if p := len(bytes.TrimRight(b, " \t")); p > 0 && b[p-1] != '\n' {
+ w.printf("\"\" + // Size: %d bytes%s\n", len(s), extraComment)
+ n, max = maxWidth, maxWidth
+ }
+
+ w.printf(`"`)
+
+ for sz, p, nLines := 0, 0, 0; p < len(s); {
+ var r rune
+ r, sz = utf8.DecodeRuneInString(s[p:])
+ out := s[p : p+sz]
+ chars := 1
+ if !unicode.IsPrint(r) || r == utf8.RuneError || r == '"' {
+ switch sz {
+ case 1:
+ out = fmt.Sprintf("\\x%02x", s[p])
+ case 2, 3:
+ out = fmt.Sprintf("\\u%04x", r)
+ case 4:
+ out = fmt.Sprintf("\\U%08x", r)
+ }
+ chars = len(out)
+ } else if r == '\\' {
+ out = "\\" + string(r)
+ chars = 2
+ }
+ if n -= chars; n < 0 {
+ nLines++
+ if explicitParens && nLines&63 == 63 {
+ w.printf("\") + (\"")
+ }
+ w.printf("\" +\n\"")
+ n = max - len(out)
+ }
+ w.printf("%s", out)
+ p += sz
+ }
+ w.printf(`"`)
+ if explicitParens {
+ w.printf(`)`)
+ }
+}
+
+// WriteSlice writes a slice value.
+func (w *CodeWriter) WriteSlice(x interface{}) {
+ w.writeSlice(x, false)
+}
+
+// WriteArray writes an array value.
+func (w *CodeWriter) WriteArray(x interface{}) {
+ w.writeSlice(x, true)
+}
+
+func (w *CodeWriter) writeSlice(x interface{}, isArray bool) {
+ v := reflect.ValueOf(x)
+ w.gob.Encode(v.Len())
+ w.Size += v.Len() * int(v.Type().Elem().Size())
+ name := typeName(x)
+ if isArray {
+ name = fmt.Sprintf("[%d]%s", v.Len(), name[strings.Index(name, "]")+1:])
+ }
+ if isArray {
+ w.printf("%s{\n", name)
+ } else {
+ w.printf("%s{ // %d elements\n", name, v.Len())
+ }
+
+ switch kind := v.Type().Elem().Kind(); kind {
+ case reflect.String:
+ for _, s := range x.([]string) {
+ w.WriteString(s)
+ w.printf(",\n")
+ }
+ case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64,
+ reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+ // nLine and nBlock are the number of elements per line and block.
+ nLine, nBlock, format := 8, 64, "%d,"
+ switch kind {
+ case reflect.Uint8:
+ format = "%#02x,"
+ case reflect.Uint16:
+ format = "%#04x,"
+ case reflect.Uint32:
+ nLine, nBlock, format = 4, 32, "%#08x,"
+ case reflect.Uint, reflect.Uint64:
+ nLine, nBlock, format = 4, 32, "%#016x,"
+ case reflect.Int8:
+ nLine = 16
+ }
+ n := nLine
+ for i := 0; i < v.Len(); i++ {
+ if i%nBlock == 0 && v.Len() > nBlock {
+ w.printf("// Entry %X - %X\n", i, i+nBlock-1)
+ }
+ x := v.Index(i).Interface()
+ w.gob.Encode(x)
+ w.printf(format, x)
+ if n--; n == 0 {
+ n = nLine
+ w.printf("\n")
+ }
+ }
+ w.printf("\n")
+ case reflect.Struct:
+ zero := reflect.Zero(v.Type().Elem()).Interface()
+ for i := 0; i < v.Len(); i++ {
+ x := v.Index(i).Interface()
+ w.gob.EncodeValue(v)
+ if !reflect.DeepEqual(zero, x) {
+ line := fmt.Sprintf("%#v,\n", x)
+ line = line[strings.IndexByte(line, '{'):]
+ w.printf("%d: ", i)
+ w.printf(line)
+ }
+ }
+ case reflect.Array:
+ for i := 0; i < v.Len(); i++ {
+ w.printf("%d: %#v,\n", i, v.Index(i).Interface())
+ }
+ default:
+ panic("gen: slice elem type not supported")
+ }
+ w.printf("}")
+}
+
+// WriteType writes a definition of the type of the given value and returns the
+// type name.
+func (w *CodeWriter) WriteType(x interface{}) string {
+ t := reflect.TypeOf(x)
+ w.printf("type %s struct {\n", t.Name())
+ for i := 0; i < t.NumField(); i++ {
+ w.printf("\t%s %s\n", t.Field(i).Name, t.Field(i).Type)
+ }
+ w.printf("}\n")
+ return t.Name()
+}
+
+// typeName returns the name of the go type of x.
+func typeName(x interface{}) string {
+ t := reflect.ValueOf(x).Type()
+ return strings.Replace(fmt.Sprint(t), "main.", "", 1)
+}
diff --git a/vendor/golang.org/x/text/internal/gen/gen.go b/vendor/golang.org/x/text/internal/gen/gen.go
new file mode 100644
index 0000000..cc6510f
--- /dev/null
+++ b/vendor/golang.org/x/text/internal/gen/gen.go
@@ -0,0 +1,347 @@
+// 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.
+
+// Package gen contains common code for the various code generation tools in the
+// text repository. Its usage ensures consistency between tools.
+//
+// This package defines command line flags that are common to most generation
+// tools. The flags allow for specifying specific Unicode and CLDR versions
+// in the public Unicode data repository (https://www.unicode.org/Public).
+//
+// A local Unicode data mirror can be set through the flag -local or the
+// environment variable UNICODE_DIR. The former takes precedence. The local
+// directory should follow the same structure as the public repository.
+//
+// IANA data can also optionally be mirrored by putting it in the iana directory
+// rooted at the top of the local mirror. Beware, though, that IANA data is not
+// versioned. So it is up to the developer to use the right version.
+package gen // import "golang.org/x/text/internal/gen"
+
+import (
+ "bytes"
+ "flag"
+ "fmt"
+ "go/build"
+ "go/format"
+ "io"
+ "io/ioutil"
+ "log"
+ "net/http"
+ "os"
+ "path"
+ "path/filepath"
+ "regexp"
+ "strings"
+ "sync"
+ "unicode"
+
+ "golang.org/x/text/unicode/cldr"
+)
+
+var (
+ url = flag.String("url",
+ "https://www.unicode.org/Public",
+ "URL of Unicode database directory")
+ iana = flag.String("iana",
+ "http://www.iana.org",
+ "URL of the IANA repository")
+ unicodeVersion = flag.String("unicode",
+ getEnv("UNICODE_VERSION", unicode.Version),
+ "unicode version to use")
+ cldrVersion = flag.String("cldr",
+ getEnv("CLDR_VERSION", cldr.Version),
+ "cldr version to use")
+)
+
+func getEnv(name, def string) string {
+ if v := os.Getenv(name); v != "" {
+ return v
+ }
+ return def
+}
+
+// Init performs common initialization for a gen command. It parses the flags
+// and sets up the standard logging parameters.
+func Init() {
+ log.SetPrefix("")
+ log.SetFlags(log.Lshortfile)
+ flag.Parse()
+}
+
+const header = `// Code generated by running "go generate" in golang.org/x/text. DO NOT EDIT.
+
+`
+
+// UnicodeVersion reports the requested Unicode version.
+func UnicodeVersion() string {
+ return *unicodeVersion
+}
+
+// CLDRVersion reports the requested CLDR version.
+func CLDRVersion() string {
+ return *cldrVersion
+}
+
+var tags = []struct{ version, buildTags string }{
+ {"9.0.0", "!go1.10"},
+ {"10.0.0", "go1.10,!go1.13"},
+ {"11.0.0", "go1.13"},
+}
+
+// buildTags reports the build tags used for the current Unicode version.
+func buildTags() string {
+ v := UnicodeVersion()
+ for _, e := range tags {
+ if e.version == v {
+ return e.buildTags
+ }
+ }
+ log.Fatalf("Unknown build tags for Unicode version %q.", v)
+ return ""
+}
+
+// IsLocal reports whether data files are available locally.
+func IsLocal() bool {
+ dir, err := localReadmeFile()
+ if err != nil {
+ return false
+ }
+ if _, err = os.Stat(dir); err != nil {
+ return false
+ }
+ return true
+}
+
+// OpenUCDFile opens the requested UCD file. The file is specified relative to
+// the public Unicode root directory. It will call log.Fatal if there are any
+// errors.
+func OpenUCDFile(file string) io.ReadCloser {
+ return openUnicode(path.Join(*unicodeVersion, "ucd", file))
+}
+
+// OpenCLDRCoreZip opens the CLDR core zip file. It will call log.Fatal if there
+// are any errors.
+func OpenCLDRCoreZip() io.ReadCloser {
+ return OpenUnicodeFile("cldr", *cldrVersion, "core.zip")
+}
+
+// OpenUnicodeFile opens the requested file of the requested category from the
+// root of the Unicode data archive. The file is specified relative to the
+// public Unicode root directory. If version is "", it will use the default
+// Unicode version. It will call log.Fatal if there are any errors.
+func OpenUnicodeFile(category, version, file string) io.ReadCloser {
+ if version == "" {
+ version = UnicodeVersion()
+ }
+ return openUnicode(path.Join(category, version, file))
+}
+
+// OpenIANAFile opens the requested IANA file. The file is specified relative
+// to the IANA root, which is typically either http://www.iana.org or the
+// iana directory in the local mirror. It will call log.Fatal if there are any
+// errors.
+func OpenIANAFile(path string) io.ReadCloser {
+ return Open(*iana, "iana", path)
+}
+
+var (
+ dirMutex sync.Mutex
+ localDir string
+)
+
+const permissions = 0755
+
+func localReadmeFile() (string, error) {
+ p, err := build.Import("golang.org/x/text", "", build.FindOnly)
+ if err != nil {
+ return "", fmt.Errorf("Could not locate package: %v", err)
+ }
+ return filepath.Join(p.Dir, "DATA", "README"), nil
+}
+
+func getLocalDir() string {
+ dirMutex.Lock()
+ defer dirMutex.Unlock()
+
+ readme, err := localReadmeFile()
+ if err != nil {
+ log.Fatal(err)
+ }
+ dir := filepath.Dir(readme)
+ if _, err := os.Stat(readme); err != nil {
+ if err := os.MkdirAll(dir, permissions); err != nil {
+ log.Fatalf("Could not create directory: %v", err)
+ }
+ ioutil.WriteFile(readme, []byte(readmeTxt), permissions)
+ }
+ return dir
+}
+
+const readmeTxt = `Generated by golang.org/x/text/internal/gen. DO NOT EDIT.
+
+This directory contains downloaded files used to generate the various tables
+in the golang.org/x/text subrepo.
+
+Note that the language subtag repo (iana/assignments/language-subtag-registry)
+and all other times in the iana subdirectory are not versioned and will need
+to be periodically manually updated. The easiest way to do this is to remove
+the entire iana directory. This is mostly of concern when updating the language
+package.
+`
+
+// Open opens subdir/path if a local directory is specified and the file exists,
+// where subdir is a directory relative to the local root, or fetches it from
+// urlRoot/path otherwise. It will call log.Fatal if there are any errors.
+func Open(urlRoot, subdir, path string) io.ReadCloser {
+ file := filepath.Join(getLocalDir(), subdir, filepath.FromSlash(path))
+ return open(file, urlRoot, path)
+}
+
+func openUnicode(path string) io.ReadCloser {
+ file := filepath.Join(getLocalDir(), filepath.FromSlash(path))
+ return open(file, *url, path)
+}
+
+// TODO: automatically periodically update non-versioned files.
+
+func open(file, urlRoot, path string) io.ReadCloser {
+ if f, err := os.Open(file); err == nil {
+ return f
+ }
+ r := get(urlRoot, path)
+ defer r.Close()
+ b, err := ioutil.ReadAll(r)
+ if err != nil {
+ log.Fatalf("Could not download file: %v", err)
+ }
+ os.MkdirAll(filepath.Dir(file), permissions)
+ if err := ioutil.WriteFile(file, b, permissions); err != nil {
+ log.Fatalf("Could not create file: %v", err)
+ }
+ return ioutil.NopCloser(bytes.NewReader(b))
+}
+
+func get(root, path string) io.ReadCloser {
+ url := root + "/" + path
+ fmt.Printf("Fetching %s...", url)
+ defer fmt.Println(" done.")
+ resp, err := http.Get(url)
+ if err != nil {
+ log.Fatalf("HTTP GET: %v", err)
+ }
+ if resp.StatusCode != 200 {
+ log.Fatalf("Bad GET status for %q: %q", url, resp.Status)
+ }
+ return resp.Body
+}
+
+// TODO: use Write*Version in all applicable packages.
+
+// WriteUnicodeVersion writes a constant for the Unicode version from which the
+// tables are generated.
+func WriteUnicodeVersion(w io.Writer) {
+ fmt.Fprintf(w, "// UnicodeVersion is the Unicode version from which the tables in this package are derived.\n")
+ fmt.Fprintf(w, "const UnicodeVersion = %q\n\n", UnicodeVersion())
+}
+
+// WriteCLDRVersion writes a constant for the CLDR version from which the
+// tables are generated.
+func WriteCLDRVersion(w io.Writer) {
+ fmt.Fprintf(w, "// CLDRVersion is the CLDR version from which the tables in this package are derived.\n")
+ fmt.Fprintf(w, "const CLDRVersion = %q\n\n", CLDRVersion())
+}
+
+// WriteGoFile prepends a standard file comment and package statement to the
+// given bytes, applies gofmt, and writes them to a file with the given name.
+// It will call log.Fatal if there are any errors.
+func WriteGoFile(filename, pkg string, b []byte) {
+ w, err := os.Create(filename)
+ if err != nil {
+ log.Fatalf("Could not create file %s: %v", filename, err)
+ }
+ defer w.Close()
+ if _, err = WriteGo(w, pkg, "", b); err != nil {
+ log.Fatalf("Error writing file %s: %v", filename, err)
+ }
+}
+
+func fileToPattern(filename string) string {
+ suffix := ".go"
+ if strings.HasSuffix(filename, "_test.go") {
+ suffix = "_test.go"
+ }
+ prefix := filename[:len(filename)-len(suffix)]
+ return fmt.Sprint(prefix, "%s", suffix)
+}
+
+func updateBuildTags(pattern string) {
+ for _, t := range tags {
+ oldFile := fmt.Sprintf(pattern, t.version)
+ b, err := ioutil.ReadFile(oldFile)
+ if err != nil {
+ continue
+ }
+ build := fmt.Sprintf("// +build %s", t.buildTags)
+ b = regexp.MustCompile(`// \+build .*`).ReplaceAll(b, []byte(build))
+ err = ioutil.WriteFile(oldFile, b, 0644)
+ if err != nil {
+ log.Fatal(err)
+ }
+ }
+}
+
+// WriteVersionedGoFile prepends a standard file comment, adds build tags to
+// version the file for the current Unicode version, and package statement to
+// the given bytes, applies gofmt, and writes them to a file with the given
+// name. It will call log.Fatal if there are any errors.
+func WriteVersionedGoFile(filename, pkg string, b []byte) {
+ pattern := fileToPattern(filename)
+ updateBuildTags(pattern)
+ filename = fmt.Sprintf(pattern, UnicodeVersion())
+
+ w, err := os.Create(filename)
+ if err != nil {
+ log.Fatalf("Could not create file %s: %v", filename, err)
+ }
+ defer w.Close()
+ if _, err = WriteGo(w, pkg, buildTags(), b); err != nil {
+ log.Fatalf("Error writing file %s: %v", filename, err)
+ }
+}
+
+// WriteGo prepends a standard file comment and package statement to the given
+// bytes, applies gofmt, and writes them to w.
+func WriteGo(w io.Writer, pkg, tags string, b []byte) (n int, err error) {
+ src := []byte(header)
+ if tags != "" {
+ src = append(src, fmt.Sprintf("// +build %s\n\n", tags)...)
+ }
+ src = append(src, fmt.Sprintf("package %s\n\n", pkg)...)
+ src = append(src, b...)
+ formatted, err := format.Source(src)
+ if err != nil {
+ // Print the generated code even in case of an error so that the
+ // returned error can be meaningfully interpreted.
+ n, _ = w.Write(src)
+ return n, err
+ }
+ return w.Write(formatted)
+}
+
+// Repackage rewrites a Go file from belonging to package main to belonging to
+// the given package.
+func Repackage(inFile, outFile, pkg string) {
+ src, err := ioutil.ReadFile(inFile)
+ if err != nil {
+ log.Fatalf("reading %s: %v", inFile, err)
+ }
+ const toDelete = "package main\n\n"
+ i := bytes.Index(src, []byte(toDelete))
+ if i < 0 {
+ log.Fatalf("Could not find %q in %s.", toDelete, inFile)
+ }
+ w := &bytes.Buffer{}
+ w.Write(src[i+len(toDelete):])
+ WriteGoFile(outFile, pkg, w.Bytes())
+}