506 lines
13 KiB
Go
506 lines
13 KiB
Go
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// Copyright 2013 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
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import (
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"bytes"
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"flag"
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"fmt"
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"os"
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"path"
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"path/filepath"
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"strings"
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"testing"
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"golang.org/x/text/internal/testtext"
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"golang.org/x/text/internal/ucd"
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)
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var verbose = flag.Bool("verbose", false, "set to true to print the internal tables of matchers")
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func TestCompliance(t *testing.T) {
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filepath.Walk("testdata", func(file string, info os.FileInfo, err error) error {
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if info.IsDir() {
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return nil
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}
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r, err := os.Open(file)
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if err != nil {
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t.Fatal(err)
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}
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ucd.Parse(r, func(p *ucd.Parser) {
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name := strings.Replace(path.Join(p.String(0), p.String(1)), " ", "", -1)
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if skip[name] {
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return
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}
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t.Run(info.Name()+"/"+name, func(t *testing.T) {
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supported := makeTagList(p.String(0))
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desired := makeTagList(p.String(1))
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gotCombined, index, conf := NewMatcher(supported).Match(desired...)
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gotMatch := supported[index]
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wantMatch := mk(p.String(2))
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if gotMatch != wantMatch {
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t.Fatalf("match: got %q; want %q (%v)", gotMatch, wantMatch, conf)
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}
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wantCombined, err := Raw.Parse(p.String(3))
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if err == nil && gotCombined != wantCombined {
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t.Errorf("combined: got %q; want %q (%v)", gotCombined, wantCombined, conf)
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}
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})
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})
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return nil
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})
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}
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var skip = map[string]bool{
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// TODO: bugs
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// Honor the wildcard match. This may only be useful to select non-exact
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// stuff.
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"mul,af/nl": true, // match: got "af"; want "mul"
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// TODO: include other extensions.
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// combined: got "en-GB-u-ca-buddhist-nu-arab"; want "en-GB-fonipa-t-m0-iso-i0-pinyin-u-ca-buddhist-nu-arab"
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"und,en-GB-u-sd-gbsct/en-fonipa-u-nu-Arab-ca-buddhist-t-m0-iso-i0-pinyin": true,
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// Inconsistencies with Mark Davis' implementation where it is not clear
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// which is better.
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// Inconsistencies in combined. I think the Go approach is more appropriate.
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// We could use -u-rg- and -u-va- as alternative.
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"und,fr/fr-BE-fonipa": true, // combined: got "fr"; want "fr-BE-fonipa"
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"und,fr-CA/fr-BE-fonipa": true, // combined: got "fr-CA"; want "fr-BE-fonipa"
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"und,fr-fonupa/fr-BE-fonipa": true, // combined: got "fr-fonupa"; want "fr-BE-fonipa"
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"und,no/nn-BE-fonipa": true, // combined: got "no"; want "no-BE-fonipa"
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"50,und,fr-CA-fonupa/fr-BE-fonipa": true, // combined: got "fr-CA-fonupa"; want "fr-BE-fonipa"
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// The initial number is a threshold. As we don't use scoring, we will not
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// implement this.
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"50,und,fr-Cyrl-CA-fonupa/fr-BE-fonipa": true,
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// match: got "und"; want "fr-Cyrl-CA-fonupa"
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// combined: got "und"; want "fr-Cyrl-BE-fonipa"
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// Other interesting cases to test:
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// - Should same language or same script have the preference if there is
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// usually no understanding of the other script?
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// - More specific region in desired may replace enclosing supported.
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}
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func makeTagList(s string) (tags []Tag) {
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for _, s := range strings.Split(s, ",") {
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tags = append(tags, mk(strings.TrimSpace(s)))
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}
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return tags
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}
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func TestMatchStrings(t *testing.T) {
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testCases := []struct {
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supported string
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desired string // strings separted by |
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tag string
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index int
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}{{
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supported: "en",
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desired: "",
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tag: "en",
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index: 0,
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}, {
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supported: "en",
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desired: "nl",
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tag: "en",
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index: 0,
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}, {
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supported: "en,nl",
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desired: "nl",
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tag: "nl",
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index: 1,
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}, {
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supported: "en,nl",
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desired: "nl|en",
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tag: "nl",
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index: 1,
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}, {
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supported: "en-GB,nl",
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desired: "en ; q=0.1,nl",
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tag: "nl",
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index: 1,
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}, {
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supported: "en-GB,nl",
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desired: "en;q=0.005 | dk; q=0.1,nl ",
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tag: "en-GB",
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index: 0,
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}, {
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// do not match faulty tags with und
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supported: "en,und",
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desired: "|en",
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tag: "en",
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index: 0,
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}}
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for _, tc := range testCases {
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t.Run(path.Join(tc.supported, tc.desired), func(t *testing.T) {
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m := NewMatcher(makeTagList(tc.supported))
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tag, index := MatchStrings(m, strings.Split(tc.desired, "|")...)
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if tag.String() != tc.tag || index != tc.index {
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t.Errorf("got %v, %d; want %v, %d", tag, index, tc.tag, tc.index)
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}
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})
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}
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}
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func TestAddLikelySubtags(t *testing.T) {
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tests := []struct{ in, out string }{
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{"aa", "aa-Latn-ET"},
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{"aa-Latn", "aa-Latn-ET"},
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{"aa-Arab", "aa-Arab-ET"},
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{"aa-Arab-ER", "aa-Arab-ER"},
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{"kk", "kk-Cyrl-KZ"},
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{"kk-CN", "kk-Arab-CN"},
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{"cmn", "cmn"},
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{"zh-AU", "zh-Hant-AU"},
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{"zh-VN", "zh-Hant-VN"},
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{"zh-SG", "zh-Hans-SG"},
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{"zh-Hant", "zh-Hant-TW"},
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{"zh-Hani", "zh-Hani-CN"},
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{"und-Hani", "zh-Hani-CN"},
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{"und", "en-Latn-US"},
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{"und-GB", "en-Latn-GB"},
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{"und-CW", "pap-Latn-CW"},
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{"und-YT", "fr-Latn-YT"},
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{"und-Arab", "ar-Arab-EG"},
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{"und-AM", "hy-Armn-AM"},
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{"und-TW", "zh-Hant-TW"},
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{"und-002", "en-Latn-NG"},
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{"und-Latn-002", "en-Latn-NG"},
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{"en-Latn-002", "en-Latn-NG"},
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{"en-002", "en-Latn-NG"},
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{"en-001", "en-Latn-US"},
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{"und-003", "en-Latn-US"},
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{"und-GB", "en-Latn-GB"},
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{"Latn-001", "en-Latn-US"},
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{"en-001", "en-Latn-US"},
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{"es-419", "es-Latn-419"},
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{"he-145", "he-Hebr-IL"},
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{"ky-145", "ky-Latn-TR"},
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{"kk", "kk-Cyrl-KZ"},
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// Don't specialize duplicate and ambiguous matches.
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{"kk-034", "kk-Arab-034"}, // Matches IR and AF. Both are Arab.
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{"ku-145", "ku-Latn-TR"}, // Matches IQ, TR, and LB, but kk -> TR.
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{"und-Arab-CC", "ms-Arab-CC"},
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{"und-Arab-GB", "ks-Arab-GB"},
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{"und-Hans-CC", "zh-Hans-CC"},
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{"und-CC", "en-Latn-CC"},
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{"sr", "sr-Cyrl-RS"},
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{"sr-151", "sr-Latn-151"}, // Matches RO and RU.
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// We would like addLikelySubtags to generate the same results if the input
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// only changes by adding tags that would otherwise have been added
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// by the expansion.
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// In other words:
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// und-AA -> xx-Scrp-AA implies und-Scrp-AA -> xx-Scrp-AA
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// und-AA -> xx-Scrp-AA implies xx-AA -> xx-Scrp-AA
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// und-Scrp -> xx-Scrp-AA implies und-Scrp-AA -> xx-Scrp-AA
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// und-Scrp -> xx-Scrp-AA implies xx-Scrp -> xx-Scrp-AA
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// xx -> xx-Scrp-AA implies xx-Scrp -> xx-Scrp-AA
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// xx -> xx-Scrp-AA implies xx-AA -> xx-Scrp-AA
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//
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// The algorithm specified in
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// http://unicode.org/reports/tr35/tr35-9.html#Supplemental_Data,
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// Section C.10, does not handle the first case. For example,
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// the CLDR data contains an entry und-BJ -> fr-Latn-BJ, but not
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// there is no rule for und-Latn-BJ. According to spec, und-Latn-BJ
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// would expand to en-Latn-BJ, violating the aforementioned principle.
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// We deviate from the spec by letting und-Scrp-AA expand to xx-Scrp-AA
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// if a rule of the form und-AA -> xx-Scrp-AA is defined.
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// Note that as of version 23, CLDR has some explicitly specified
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// entries that do not conform to these rules. The implementation
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// will not correct these explicit inconsistencies. A later versions of CLDR
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// is supposed to fix this.
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{"und-Latn-BJ", "fr-Latn-BJ"},
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{"und-Bugi-ID", "bug-Bugi-ID"},
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// regions, scripts and languages without definitions
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{"und-Arab-AA", "ar-Arab-AA"},
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{"und-Afak-RE", "fr-Afak-RE"},
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{"und-Arab-GB", "ks-Arab-GB"},
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{"abp-Arab-GB", "abp-Arab-GB"},
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// script has preference over region
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{"und-Arab-NL", "ar-Arab-NL"},
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{"zza", "zza-Latn-TR"},
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// preserve variants and extensions
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{"de-1901", "de-Latn-DE-1901"},
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{"de-x-abc", "de-Latn-DE-x-abc"},
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{"de-1901-x-abc", "de-Latn-DE-1901-x-abc"},
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{"x-abc", "x-abc"}, // TODO: is this the desired behavior?
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}
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for i, tt := range tests {
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in, _ := Parse(tt.in)
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out, _ := Parse(tt.out)
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in, _ = in.addLikelySubtags()
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if in.String() != out.String() {
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t.Errorf("%d: add(%s) was %s; want %s", i, tt.in, in, tt.out)
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}
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}
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}
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func TestMinimize(t *testing.T) {
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tests := []struct{ in, out string }{
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{"aa", "aa"},
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{"aa-Latn", "aa"},
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{"aa-Latn-ET", "aa"},
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{"aa-ET", "aa"},
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{"aa-Arab", "aa-Arab"},
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{"aa-Arab-ER", "aa-Arab-ER"},
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{"aa-Arab-ET", "aa-Arab"},
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{"und", "und"},
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{"und-Latn", "und"},
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{"und-Latn-US", "und"},
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{"en-Latn-US", "en"},
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{"cmn", "cmn"},
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{"cmn-Hans", "cmn-Hans"},
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{"cmn-Hant", "cmn-Hant"},
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{"zh-AU", "zh-AU"},
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{"zh-VN", "zh-VN"},
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{"zh-SG", "zh-SG"},
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{"zh-Hant", "zh-Hant"},
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{"zh-Hant-TW", "zh-TW"},
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{"zh-Hans", "zh"},
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{"zh-Hani", "zh-Hani"},
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{"und-Hans", "und-Hans"},
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{"und-Hani", "und-Hani"},
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{"und-CW", "und-CW"},
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{"und-YT", "und-YT"},
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{"und-Arab", "und-Arab"},
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{"und-AM", "und-AM"},
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{"und-Arab-CC", "und-Arab-CC"},
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{"und-CC", "und-CC"},
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{"und-Latn-BJ", "und-BJ"},
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{"und-Bugi-ID", "und-Bugi"},
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{"bug-Bugi-ID", "bug-Bugi"},
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// regions, scripts and languages without definitions
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{"und-Arab-AA", "und-Arab-AA"},
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// preserve variants and extensions
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{"de-Latn-1901", "de-1901"},
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{"de-Latn-x-abc", "de-x-abc"},
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{"de-DE-1901-x-abc", "de-1901-x-abc"},
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{"x-abc", "x-abc"}, // TODO: is this the desired behavior?
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}
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for i, tt := range tests {
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in, _ := Parse(tt.in)
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out, _ := Parse(tt.out)
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min, _ := in.minimize()
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if min.String() != out.String() {
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t.Errorf("%d: min(%s) was %s; want %s", i, tt.in, min, tt.out)
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}
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max, _ := min.addLikelySubtags()
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if x, _ := in.addLikelySubtags(); x.String() != max.String() {
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t.Errorf("%d: max(min(%s)) = %s; want %s", i, tt.in, max, x)
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}
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}
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}
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func TestRegionGroups(t *testing.T) {
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testCases := []struct {
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a, b string
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distance uint8
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}{
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{"zh-TW", "zh-HK", 5},
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{"zh-MO", "zh-HK", 4},
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{"es-ES", "es-AR", 5},
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{"es-ES", "es", 4},
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{"es-419", "es-MX", 4},
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{"es-AR", "es-MX", 4},
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{"es-ES", "es-MX", 5},
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{"es-PT", "es-MX", 5},
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}
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for _, tc := range testCases {
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a := MustParse(tc.a)
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aScript, _ := a.Script()
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b := MustParse(tc.b)
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bScript, _ := b.Script()
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if aScript != bScript {
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t.Errorf("scripts differ: %q vs %q", aScript, bScript)
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continue
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}
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d, _ := regionGroupDist(a.region, b.region, aScript.scriptID, a.lang)
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if d != tc.distance {
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t.Errorf("got %q; want %q", d, tc.distance)
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}
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}
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}
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func TestIsParadigmLocale(t *testing.T) {
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|
|
testCases := map[string]bool{
|
||
|
|
"en-US": true,
|
||
|
|
"en-GB": true,
|
||
|
|
"en-VI": false,
|
||
|
|
"es-GB": false,
|
||
|
|
"es-ES": true,
|
||
|
|
"es-419": true,
|
||
|
|
}
|
||
|
|
for str, want := range testCases {
|
||
|
|
tag := Make(str)
|
||
|
|
got := isParadigmLocale(tag.lang, tag.region)
|
||
|
|
if got != want {
|
||
|
|
t.Errorf("isPL(%q) = %v; want %v", str, got, want)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Implementation of String methods for various types for debugging purposes.
|
||
|
|
|
||
|
|
func (m *matcher) String() string {
|
||
|
|
w := &bytes.Buffer{}
|
||
|
|
fmt.Fprintln(w, "Default:", m.default_)
|
||
|
|
for tag, h := range m.index {
|
||
|
|
fmt.Fprintf(w, " %s: %v\n", tag, h)
|
||
|
|
}
|
||
|
|
return w.String()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (h *matchHeader) String() string {
|
||
|
|
w := &bytes.Buffer{}
|
||
|
|
fmt.Fprint(w, "haveTag: ")
|
||
|
|
for _, h := range h.haveTags {
|
||
|
|
fmt.Fprintf(w, "%v, ", h)
|
||
|
|
}
|
||
|
|
return w.String()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (t haveTag) String() string {
|
||
|
|
return fmt.Sprintf("%v:%d:%v:%v-%v|%v", t.tag, t.index, t.conf, t.maxRegion, t.maxScript, t.altScript)
|
||
|
|
}
|
||
|
|
|
||
|
|
func TestBestMatchAlloc(t *testing.T) {
|
||
|
|
m := NewMatcher(makeTagList("en sr nl"))
|
||
|
|
// Go allocates when creating a list of tags from a single tag!
|
||
|
|
list := []Tag{English}
|
||
|
|
avg := testtext.AllocsPerRun(1, func() {
|
||
|
|
m.Match(list...)
|
||
|
|
})
|
||
|
|
if avg > 0 {
|
||
|
|
t.Errorf("got %f; want 0", avg)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
var benchHave = []Tag{
|
||
|
|
mk("en"),
|
||
|
|
mk("en-GB"),
|
||
|
|
mk("za"),
|
||
|
|
mk("zh-Hant"),
|
||
|
|
mk("zh-Hans-CN"),
|
||
|
|
mk("zh"),
|
||
|
|
mk("zh-HK"),
|
||
|
|
mk("ar-MK"),
|
||
|
|
mk("en-CA"),
|
||
|
|
mk("fr-CA"),
|
||
|
|
mk("fr-US"),
|
||
|
|
mk("fr-CH"),
|
||
|
|
mk("fr"),
|
||
|
|
mk("lt"),
|
||
|
|
mk("lv"),
|
||
|
|
mk("iw"),
|
||
|
|
mk("iw-NL"),
|
||
|
|
mk("he"),
|
||
|
|
mk("he-IT"),
|
||
|
|
mk("tlh"),
|
||
|
|
mk("ja"),
|
||
|
|
mk("ja-Jpan"),
|
||
|
|
mk("ja-Jpan-JP"),
|
||
|
|
mk("de"),
|
||
|
|
mk("de-CH"),
|
||
|
|
mk("de-AT"),
|
||
|
|
mk("de-DE"),
|
||
|
|
mk("sr"),
|
||
|
|
mk("sr-Latn"),
|
||
|
|
mk("sr-Cyrl"),
|
||
|
|
mk("sr-ME"),
|
||
|
|
}
|
||
|
|
|
||
|
|
var benchWant = [][]Tag{
|
||
|
|
[]Tag{
|
||
|
|
mk("en"),
|
||
|
|
},
|
||
|
|
[]Tag{
|
||
|
|
mk("en-AU"),
|
||
|
|
mk("de-HK"),
|
||
|
|
mk("nl"),
|
||
|
|
mk("fy"),
|
||
|
|
mk("lv"),
|
||
|
|
},
|
||
|
|
[]Tag{
|
||
|
|
mk("en-AU"),
|
||
|
|
mk("de-HK"),
|
||
|
|
mk("nl"),
|
||
|
|
mk("fy"),
|
||
|
|
},
|
||
|
|
[]Tag{
|
||
|
|
mk("ja-Hant"),
|
||
|
|
mk("da-HK"),
|
||
|
|
mk("nl"),
|
||
|
|
mk("zh-TW"),
|
||
|
|
},
|
||
|
|
[]Tag{
|
||
|
|
mk("ja-Hant"),
|
||
|
|
mk("da-HK"),
|
||
|
|
mk("nl"),
|
||
|
|
mk("hr"),
|
||
|
|
},
|
||
|
|
}
|
||
|
|
|
||
|
|
func BenchmarkMatch(b *testing.B) {
|
||
|
|
m := newMatcher(benchHave, nil)
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
for _, want := range benchWant {
|
||
|
|
m.getBest(want...)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func BenchmarkMatchExact(b *testing.B) {
|
||
|
|
want := mk("en")
|
||
|
|
m := newMatcher(benchHave, nil)
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
m.getBest(want)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func BenchmarkMatchAltLanguagePresent(b *testing.B) {
|
||
|
|
want := mk("hr")
|
||
|
|
m := newMatcher(benchHave, nil)
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
m.getBest(want)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func BenchmarkMatchAltLanguageNotPresent(b *testing.B) {
|
||
|
|
want := mk("nn")
|
||
|
|
m := newMatcher(benchHave, nil)
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
m.getBest(want)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func BenchmarkMatchAltScriptPresent(b *testing.B) {
|
||
|
|
want := mk("zh-Hant-CN")
|
||
|
|
m := newMatcher(benchHave, nil)
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
m.getBest(want)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func BenchmarkMatchAltScriptNotPresent(b *testing.B) {
|
||
|
|
want := mk("fr-Cyrl")
|
||
|
|
m := newMatcher(benchHave, nil)
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
m.getBest(want)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func BenchmarkMatchLimitedExact(b *testing.B) {
|
||
|
|
want := []Tag{mk("he-NL"), mk("iw-NL")}
|
||
|
|
m := newMatcher(benchHave, nil)
|
||
|
|
for i := 0; i < b.N; i++ {
|
||
|
|
m.getBest(want...)
|
||
|
|
}
|
||
|
|
}
|