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misc/sortac: add tool to sort the AUTHORS and CONTRIBUTORS files
I keep losing this utility, used as part of other tools to auto-update the AUTHORS and CONTRIBUTORS files. Check it in to the repo so I don't lose it, and so others can use it as well. Updates #12042 Change-Id: Ib5886b85799087aaaddcec4c81169e2726322c05 Reviewed-on: https://go-review.googlesource.com/16824 Reviewed-by: Russ Cox <rsc@golang.org>
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misc/sortac/sortac.go
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79
misc/sortac/sortac.go
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// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Sortac sorts the AUTHORS and CONTRIBUTORS files.
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//
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// Usage:
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//
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// sortac [file...]
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//
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// Sortac sorts the named files in place.
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// If given no arguments, it sorts standard input to standard output.
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package main
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import (
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"bufio"
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"bytes"
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"flag"
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"os"
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"golang.org/x/text/collate"
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"golang.org/x/text/language"
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)
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func main() {
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log.SetFlags(0)
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log.SetPrefix("sortac: ")
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flag.Parse()
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args := flag.Args()
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if len(args) == 0 {
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os.Stdout.Write(sortAC(os.Stdin))
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} else {
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for _, arg := range args {
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f, err := os.Open(arg)
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if err != nil {
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log.Fatal(err)
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}
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sorted := sortAC(f)
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f.Close()
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if err := ioutil.WriteFile(arg, sorted, 0644); err != nil {
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log.Fatal(err)
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}
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}
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}
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}
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func sortAC(r io.Reader) []byte {
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bs := bufio.NewScanner(r)
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var header []string
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var lines []string
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for bs.Scan() {
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t := bs.Text()
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lines = append(lines, t)
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if t == "# Please keep the list sorted." {
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header = lines
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lines = nil
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continue
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}
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}
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if err := bs.Err(); err != nil {
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log.Fatal(err)
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}
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var out bytes.Buffer
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c := collate.New(language.Und, collate.Loose)
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c.SortStrings(lines)
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for _, l := range header {
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fmt.Fprintln(&out, l)
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}
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for _, l := range lines {
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fmt.Fprintln(&out, l)
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}
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return out.Bytes()
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}
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