func supportedRegions() []language.Region {
reg := make([]language.Region, 0, regionIndex.len())
regionIndex.keys(func(s string) {
reg = append(reg, language.MustParseRegion(s))
})
return reg
}
func ExampleTag_values() {
us := language.MustParseRegion("US")
en := language.MustParseBase("en")
lang, _, region := language.AmericanEnglish.Raw()
fmt.Println(lang == en, region == us)
lang, _, region = language.BritishEnglish.Raw()
fmt.Println(lang == en, region == us)
// Tags can be compared for exact equivalence using '=='.
en_us, _ := language.Compose(en, us)
fmt.Println(en_us == language.AmericanEnglish)
// Output:
// true true
// true false
// true
}
func TestRegion(t *testing.T) {
tests := []struct {
dict string
reg string
name string
}{
{"nl", "NL", "Nederland"},
{"en", "US", "United States"},
{"en", "ZZ", "Unknown Region"},
{"en", "UM", "U.S. Outlying Islands"},
{"en-GB", "UM", "U.S. Minor Outlying Islands"},
{"en-GB", "NL", "Netherlands"},
// Canonical equivalents
{"en", "UK", "United Kingdom"},
// No region
{"en", "pt", "Unknown Region"},
{"en", "und", "Unknown Region"},
// Don't introduce regions with canonicalization.
{"en", "mo", "Unknown Region"},
}
for i, tt := range tests {
d := Regions(language.MustParse(tt.dict))
var x interface{}
if unicode.IsUpper(rune(tt.reg[0])) {
// Region
x = language.MustParseRegion(tt.reg)
tag, _ := language.Raw.Compose(x)
if n := d.Name(tag); n != tt.name {
t.Errorf("%d:%s:%s: was %q; want %q", i, tt.dict, tt.reg, n, tt.name)
}
} else {
// Tag
x = language.Raw.MustParse(tt.reg)
}
if n := d.Name(x); n != tt.name {
t.Errorf("%d:%s:%s: was %q; want %q", i, tt.dict, tt.reg, n, tt.name)
}
}
}
// generate builds and writes all tables.
func (b *builder) generate() {
fmt.Printf(head, *url, *pkg, cldr.Version)
b.filter()
b.setData("lang", func(g *group, loc language.Tag, ldn *cldr.LocaleDisplayNames) {
if ldn.Languages != nil {
for _, v := range ldn.Languages.Language {
tag := tagForm.MustParse(v.Type)
if tags.contains(tag) {
g.set(loc, tag.String(), v.Data())
}
}
}
})
b.setData("script", func(g *group, loc language.Tag, ldn *cldr.LocaleDisplayNames) {
if ldn.Scripts != nil {
for _, v := range ldn.Scripts.Script {
g.set(loc, language.MustParseScript(v.Type).String(), v.Data())
}
}
})
b.setData("region", func(g *group, loc language.Tag, ldn *cldr.LocaleDisplayNames) {
if ldn.Territories != nil {
for _, v := range ldn.Territories.Territory {
g.set(loc, language.MustParseRegion(v.Type).String(), v.Data())
}
}
})
b.makeSupported()
n := b.writeParents()
n += b.writeGroup("lang")
n += b.writeGroup("script")
n += b.writeGroup("region")
b.writeSupported()
n += b.writeDictionaries()
b.supported = []language.Tag{self}
// Compute the names of locales in their own language. Some of these names
// may be specified in their parent locales. We iterate the maximum depth
// of the parent three times to match successive parents of tags until a
// possible match is found.
for i := 0; i < 4; i++ {
b.setData("self", func(g *group, tag language.Tag, ldn *cldr.LocaleDisplayNames) {
parent := tag
if b, s, r := tag.Raw(); i > 0 && (s != language.Script{} && r == language.Region{}) {
parent, _ = language.Raw.Compose(b)
}
if ldn.Languages != nil {
for _, v := range ldn.Languages.Language {
key := tagForm.MustParse(v.Type)
saved := key
if key == parent {
g.set(self, tag.String(), v.Data())
}
for k := 0; k < i; k++ {
key = key.Parent()
}
if key == tag {
g.set(self, saved.String(), v.Data()) // set does not overwrite a value.
}
}
}
})
}
n += b.writeGroup("self")
fmt.Printf("// TOTAL %d Bytes (%d KB)", n, n/1000)
}
var (
langTagSet = tagSet{
single: langIndex,
long: langTagsLong,
}
// selfTagSet is used for indexing the language strings in their own
// language.
selfTagSet = tagSet{
single: selfIndex,
long: selfTagsLong,
}
zzzz = language.MustParseScript("Zzzz")
zz = language.MustParseRegion("ZZ")
)
// index returns the index of the tag for the given base, script and region or
// its parent if the tag is not available. If the match is for a parent entry,
// the excess script and region are returned.
func (ts *tagSet) index(base language.Base, scr language.Script, reg language.Region) (int, language.Script, language.Region) {
lang := base.String()
index := -1
if (scr != language.Script{} || reg != language.Region{}) {
if scr == zzzz {
scr = language.Script{}
}
if reg == zz {
reg = language.Region{}
}