From 6312ad4bf7e48347539eb5b4c5075e447d8142f3 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Fri, 26 Jan 2018 12:18:59 +0100 Subject: Add verndor --- vendor/golang.org/x/text/language/coverage.go | 197 ++++++++++++++++++++++++++ 1 file changed, 197 insertions(+) create mode 100644 vendor/golang.org/x/text/language/coverage.go (limited to 'vendor/golang.org/x/text/language/coverage.go') diff --git a/vendor/golang.org/x/text/language/coverage.go b/vendor/golang.org/x/text/language/coverage.go new file mode 100644 index 0000000..101fd23 --- /dev/null +++ b/vendor/golang.org/x/text/language/coverage.go @@ -0,0 +1,197 @@ +// Copyright 2014 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. + +package language + +import ( + "fmt" + "sort" +) + +// The Coverage interface is used to define the level of coverage of an +// internationalization service. Note that not all types are supported by all +// services. As lists may be generated on the fly, it is recommended that users +// of a Coverage cache the results. +type Coverage interface { + // Tags returns the list of supported tags. + Tags() []Tag + + // BaseLanguages returns the list of supported base languages. + BaseLanguages() []Base + + // Scripts returns the list of supported scripts. + Scripts() []Script + + // Regions returns the list of supported regions. + Regions() []Region +} + +var ( + // Supported defines a Coverage that lists all supported subtags. Tags + // always returns nil. + Supported Coverage = allSubtags{} +) + +// TODO: +// - Support Variants, numbering systems. +// - CLDR coverage levels. +// - Set of common tags defined in this package. + +type allSubtags struct{} + +// Regions returns the list of supported regions. As all regions are in a +// consecutive range, it simply returns a slice of numbers in increasing order. +// The "undefined" region is not returned. +func (s allSubtags) Regions() []Region { + reg := make([]Region, numRegions) + for i := range reg { + reg[i] = Region{regionID(i + 1)} + } + return reg +} + +// Scripts returns the list of supported scripts. As all scripts are in a +// consecutive range, it simply returns a slice of numbers in increasing order. +// The "undefined" script is not returned. +func (s allSubtags) Scripts() []Script { + scr := make([]Script, numScripts) + for i := range scr { + scr[i] = Script{scriptID(i + 1)} + } + return scr +} + +// BaseLanguages returns the list of all supported base languages. It generates +// the list by traversing the internal structures. +func (s allSubtags) BaseLanguages() []Base { + base := make([]Base, 0, numLanguages) + for i := 0; i < langNoIndexOffset; i++ { + // We included "und" already for the value 0. + if i != nonCanonicalUnd { + base = append(base, Base{langID(i)}) + } + } + i := langNoIndexOffset + for _, v := range langNoIndex { + for k := 0; k < 8; k++ { + if v&1 == 1 { + base = append(base, Base{langID(i)}) + } + v >>= 1 + i++ + } + } + return base +} + +// Tags always returns nil. +func (s allSubtags) Tags() []Tag { + return nil +} + +// coverage is used used by NewCoverage which is used as a convenient way for +// creating Coverage implementations for partially defined data. Very often a +// package will only need to define a subset of slices. coverage provides a +// convenient way to do this. Moreover, packages using NewCoverage, instead of +// their own implementation, will not break if later new slice types are added. +type coverage struct { + tags func() []Tag + bases func() []Base + scripts func() []Script + regions func() []Region +} + +func (s *coverage) Tags() []Tag { + if s.tags == nil { + return nil + } + return s.tags() +} + +// bases implements sort.Interface and is used to sort base languages. +type bases []Base + +func (b bases) Len() int { + return len(b) +} + +func (b bases) Swap(i, j int) { + b[i], b[j] = b[j], b[i] +} + +func (b bases) Less(i, j int) bool { + return b[i].langID < b[j].langID +} + +// BaseLanguages returns the result from calling s.bases if it is specified or +// otherwise derives the set of supported base languages from tags. +func (s *coverage) BaseLanguages() []Base { + if s.bases == nil { + tags := s.Tags() + if len(tags) == 0 { + return nil + } + a := make([]Base, len(tags)) + for i, t := range tags { + a[i] = Base{langID(t.lang)} + } + sort.Sort(bases(a)) + k := 0 + for i := 1; i < len(a); i++ { + if a[k] != a[i] { + k++ + a[k] = a[i] + } + } + return a[:k+1] + } + return s.bases() +} + +func (s *coverage) Scripts() []Script { + if s.scripts == nil { + return nil + } + return s.scripts() +} + +func (s *coverage) Regions() []Region { + if s.regions == nil { + return nil + } + return s.regions() +} + +// NewCoverage returns a Coverage for the given lists. It is typically used by +// packages providing internationalization services to define their level of +// coverage. A list may be of type []T or func() []T, where T is either Tag, +// Base, Script or Region. The returned Coverage derives the value for Bases +// from Tags if no func or slice for []Base is specified. For other unspecified +// types the returned Coverage will return nil for the respective methods. +func NewCoverage(list ...interface{}) Coverage { + s := &coverage{} + for _, x := range list { + switch v := x.(type) { + case func() []Base: + s.bases = v + case func() []Script: + s.scripts = v + case func() []Region: + s.regions = v + case func() []Tag: + s.tags = v + case []Base: + s.bases = func() []Base { return v } + case []Script: + s.scripts = func() []Script { return v } + case []Region: + s.regions = func() []Region { return v } + case []Tag: + s.tags = func() []Tag { return v } + default: + panic(fmt.Sprintf("language: unsupported set type %T", v)) + } + } + return s +} -- cgit v1.2.3