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49 lines
1.4 KiB
Go
49 lines
1.4 KiB
Go
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// Copyright 2016 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 language_test
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import (
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"fmt"
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"net/http"
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"strings"
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"golang.org/x/text/language"
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)
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// matcher is a language.Matcher configured for all supported languages.
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var matcher = language.NewMatcher([]language.Tag{
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language.BritishEnglish,
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language.Norwegian,
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language.German,
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})
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// handler is a http.HandlerFunc.
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func handler(w http.ResponseWriter, r *http.Request) {
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t, q, err := language.ParseAcceptLanguage(r.Header.Get("Accept-Language"))
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// We ignore the error: the default language will be selected for t == nil.
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tag, _, _ := matcher.Match(t...)
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fmt.Printf("%5v (t: %6v; q: %3v; err: %v)\n", tag, t, q, err)
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}
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func ExampleParseAcceptLanguage() {
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for _, al := range []string{
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"nn;q=0.3, en-us;q=0.8, en,",
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"gsw, en;q=0.7, en-US;q=0.8",
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"gsw, nl, da",
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"invalid",
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} {
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// Create dummy request with Accept-Language set and pass it to handler.
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r, _ := http.NewRequest("GET", "example.com", strings.NewReader("Hello"))
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r.Header.Set("Accept-Language", al)
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handler(nil, r)
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}
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// Output:
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// en-GB (t: [ en en-US nn]; q: [ 1 0.8 0.3]; err: <nil>)
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// en-GB (t: [ gsw en-US en]; q: [ 1 0.8 0.7]; err: <nil>)
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// de (t: [ gsw nl da]; q: [ 1 1 1]; err: <nil>)
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// en-GB (t: []; q: []; err: language: tag is not well-formed)
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}
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