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

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// Copyright 2013 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

// Language tag table generator.
// Data read from the web.

package main

import (
	"flag"
	"fmt"
	"io"
	"log"
	"sort"
	"strconv"
	"strings"

	"golang.org/x/text/internal/gen"
	"golang.org/x/text/internal/language"
	"golang.org/x/text/unicode/cldr"
)

var (
	test = flag.Bool("test",
		false,
		"test existing tables; can be used to compare web data with package data.")
	outputFile = flag.String("output",
		"tables.go",
		"output file for generated tables")
)

func main() {
	gen.Init()

	w := gen.NewCodeWriter()
	defer w.WriteGoFile("tables.go", "language")

	b := newBuilder(w)
	gen.WriteCLDRVersion(w)

	b.writeConstants()
	b.writeMatchData()
}

type builder struct {
	w    *gen.CodeWriter
	hw   io.Writer // MultiWriter for w and w.Hash
	data *cldr.CLDR
	supp *cldr.SupplementalData
}

func (b *builder) langIndex(s string) uint16 {
	return uint16(language.MustParseBase(s))
}

func (b *builder) regionIndex(s string) int {
	return int(language.MustParseRegion(s))
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