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141 lines
3.1 KiB
Plaintext
141 lines
3.1 KiB
Plaintext
rsc.io/sampler@v1.99.99
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-- .mod --
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module "rsc.io/sampler"
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require "golang.org/x/text" v0.0.0-20170915032832-14c0d48ead0c
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-- .info --
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{"Version":"v1.99.99","Time":"2018-02-13T22:20:19Z"}
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-- go.mod --
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module "rsc.io/sampler"
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require "golang.org/x/text" v0.0.0-20170915032832-14c0d48ead0c
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-- hello.go --
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// Copyright 2018 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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// Translations by Google Translate.
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package sampler
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var hello = newText(`
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English: en: 99 bottles of beer on the wall, 99 bottles of beer, ...
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`)
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-- hello_test.go --
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// Copyright 2018 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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package sampler
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import (
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"testing"
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"golang.org/x/text/language"
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)
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var helloTests = []struct {
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prefs []language.Tag
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text string
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}{
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{
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[]language.Tag{language.Make("en-US"), language.Make("fr")},
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"Hello, world.",
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},
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{
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[]language.Tag{language.Make("fr"), language.Make("en-US")},
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"Bonjour le monde.",
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},
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}
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func TestHello(t *testing.T) {
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for _, tt := range helloTests {
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text := Hello(tt.prefs...)
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if text != tt.text {
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t.Errorf("Hello(%v) = %q, want %q", tt.prefs, text, tt.text)
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}
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}
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}
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-- sampler.go --
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// Copyright 2018 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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// Package sampler shows simple texts.
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package sampler // import "rsc.io/sampler"
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import (
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"os"
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"strings"
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"golang.org/x/text/language"
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)
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// DefaultUserPrefs returns the default user language preferences.
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// It consults the $LC_ALL, $LC_MESSAGES, and $LANG environment
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// variables, in that order.
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func DefaultUserPrefs() []language.Tag {
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var prefs []language.Tag
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for _, k := range []string{"LC_ALL", "LC_MESSAGES", "LANG"} {
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if env := os.Getenv(k); env != "" {
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prefs = append(prefs, language.Make(env))
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}
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}
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return prefs
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}
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// Hello returns a localized greeting.
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// If no prefs are given, Hello uses DefaultUserPrefs.
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func Hello(prefs ...language.Tag) string {
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if len(prefs) == 0 {
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prefs = DefaultUserPrefs()
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}
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return hello.find(prefs)
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}
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func Glass() string {
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return "I can eat glass and it doesn't hurt me."
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}
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// A text is a localized text.
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type text struct {
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byTag map[string]string
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matcher language.Matcher
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}
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// newText creates a new localized text, given a list of translations.
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func newText(s string) *text {
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t := &text{
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byTag: make(map[string]string),
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}
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var tags []language.Tag
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for _, line := range strings.Split(s, "\n") {
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line = strings.TrimSpace(line)
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if line == "" {
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continue
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}
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f := strings.Split(line, ": ")
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if len(f) != 3 {
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continue
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}
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tag := language.Make(f[1])
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tags = append(tags, tag)
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t.byTag[tag.String()] = f[2]
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}
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t.matcher = language.NewMatcher(tags)
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return t
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}
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// find finds the text to use for the given language tag preferences.
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func (t *text) find(prefs []language.Tag) string {
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tag, _, _ := t.matcher.Match(prefs...)
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s := t.byTag[tag.String()]
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if strings.HasPrefix(s, "RTL ") {
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s = "\u200F" + strings.TrimPrefix(s, "RTL ") + "\u200E"
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}
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return s
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}
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