diff options
Diffstat (limited to 'vendor/golang.org/x/text/internal/language/compact/gen_index.go')
-rw-r--r-- | vendor/golang.org/x/text/internal/language/compact/gen_index.go | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/vendor/golang.org/x/text/internal/language/compact/gen_index.go b/vendor/golang.org/x/text/internal/language/compact/gen_index.go new file mode 100644 index 000000000..136cefaf0 --- /dev/null +++ b/vendor/golang.org/x/text/internal/language/compact/gen_index.go @@ -0,0 +1,113 @@ +// Copyright 2015 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 + +package main + +// This file generates derivative tables based on the language package itself. + +import ( + "fmt" + "log" + "sort" + "strings" + + "golang.org/x/text/internal/language" +) + +// Compact indices: +// Note -va-X variants only apply to localization variants. +// BCP variants only ever apply to language. +// The only ambiguity between tags is with regions. + +func (b *builder) writeCompactIndex() { + // Collect all language tags for which we have any data in CLDR. + m := map[language.Tag]bool{} + for _, lang := range b.data.Locales() { + // We include all locales unconditionally to be consistent with en_US. + // We want en_US, even though it has no data associated with it. + + // TODO: put any of the languages for which no data exists at the end + // of the index. This allows all components based on ICU to use that + // as the cutoff point. + // if x := data.RawLDML(lang); false || + // x.LocaleDisplayNames != nil || + // x.Characters != nil || + // x.Delimiters != nil || + // x.Measurement != nil || + // x.Dates != nil || + // x.Numbers != nil || + // x.Units != nil || + // x.ListPatterns != nil || + // x.Collations != nil || + // x.Segmentations != nil || + // x.Rbnf != nil || + // x.Annotations != nil || + // x.Metadata != nil { + + // TODO: support POSIX natively, albeit non-standard. + tag := language.Make(strings.Replace(lang, "_POSIX", "-u-va-posix", 1)) + m[tag] = true + // } + } + + // TODO: plural rules are also defined for the deprecated tags: + // iw mo sh tl + // Consider removing these as compact tags. + + // Include locales for plural rules, which uses a different structure. + for _, plurals := range b.supp.Plurals { + for _, rules := range plurals.PluralRules { + for _, lang := range strings.Split(rules.Locales, " ") { + m[language.Make(lang)] = true + } + } + } + + var coreTags []language.CompactCoreInfo + var special []string + + for t := range m { + if x := t.Extensions(); len(x) != 0 && fmt.Sprint(x) != "[u-va-posix]" { + log.Fatalf("Unexpected extension %v in %v", x, t) + } + if len(t.Variants()) == 0 && len(t.Extensions()) == 0 { + cci, ok := language.GetCompactCore(t) + if !ok { + log.Fatalf("Locale for non-basic language %q", t) + } + coreTags = append(coreTags, cci) + } else { + special = append(special, t.String()) + } + } + + w := b.w + + sort.Slice(coreTags, func(i, j int) bool { return coreTags[i] < coreTags[j] }) + sort.Strings(special) + + w.WriteComment(` + NumCompactTags is the number of common tags. The maximum tag is + NumCompactTags-1.`) + w.WriteConst("NumCompactTags", len(m)) + + fmt.Fprintln(w, "const (") + for i, t := range coreTags { + fmt.Fprintf(w, "%s ID = %d\n", ident(t.Tag().String()), i) + } + for i, t := range special { + fmt.Fprintf(w, "%s ID = %d\n", ident(t), i+len(coreTags)) + } + fmt.Fprintln(w, ")") + + w.WriteVar("coreTags", coreTags) + + w.WriteConst("specialTagsStr", strings.Join(special, " ")) +} + +func ident(s string) string { + return strings.Replace(s, "-", "", -1) + "Index" +} |