Use mod vendor for vendored directory (backwards compatible)

1 files changed, 0 insertions, 596 deletions

diff --git a/vendor/golang.org/x/text/language/language.go b/vendor/golang.org/x/text/language/language.go
deleted file mode 100644
index f8923546..00000000
--- a/vendor/golang.org/x/text/language/language.go
+++ /dev/null
@@ -1,596 +0,0 @@
-// Copyright 2013 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.
-
-//go:generate go run gen.go -output tables.go
-
-package language
-
-// TODO: Remove above NOTE after:
-// - verifying that tables are dropped correctly (most notably matcher tables).
-
-import (
-	"strings"
-
-	"golang.org/x/text/internal/language"
-	"golang.org/x/text/internal/language/compact"
-)
-
-// Tag represents a BCP 47 language tag. It is used to specify an instance of a
-// specific language or locale. All language tag values are guaranteed to be
-// well-formed.
-type Tag compact.Tag
-
-func makeTag(t language.Tag) (tag Tag) {
-	return Tag(compact.Make(t))
-}
-
-func (t *Tag) tag() language.Tag {
-	return (*compact.Tag)(t).Tag()
-}
-
-func (t *Tag) isCompact() bool {
-	return (*compact.Tag)(t).IsCompact()
-}
-
-// TODO: improve performance.
-func (t *Tag) lang() language.Language { return t.tag().LangID }
-func (t *Tag) region() language.Region { return t.tag().RegionID }
-func (t *Tag) script() language.Script { return t.tag().ScriptID }
-
-// Make is a convenience wrapper for Parse that omits the error.
-// In case of an error, a sensible default is returned.
-func Make(s string) Tag {
-	return Default.Make(s)
-}
-
-// Make is a convenience wrapper for c.Parse that omits the error.
-// In case of an error, a sensible default is returned.
-func (c CanonType) Make(s string) Tag {
-	t, _ := c.Parse(s)
-	return t
-}
-
-// Raw returns the raw base language, script and region, without making an
-// attempt to infer their values.
-func (t Tag) Raw() (b Base, s Script, r Region) {
-	tt := t.tag()
-	return Base{tt.LangID}, Script{tt.ScriptID}, Region{tt.RegionID}
-}
-
-// IsRoot returns true if t is equal to language "und".
-func (t Tag) IsRoot() bool {
-	return compact.Tag(t).IsRoot()
-}
-
-// CanonType can be used to enable or disable various types of canonicalization.
-type CanonType int
-
-const (
-	// Replace deprecated base languages with their preferred replacements.
-	DeprecatedBase CanonType = 1 << iota
-	// Replace deprecated scripts with their preferred replacements.
-	DeprecatedScript
-	// Replace deprecated regions with their preferred replacements.
-	DeprecatedRegion
-	// Remove redundant scripts.
-	SuppressScript
-	// Normalize legacy encodings. This includes legacy languages defined in
-	// CLDR as well as bibliographic codes defined in ISO-639.
-	Legacy
-	// Map the dominant language of a macro language group to the macro language
-	// subtag. For example cmn -> zh.
-	Macro
-	// The CLDR flag should be used if full compatibility with CLDR is required.
-	// There are a few cases where language.Tag may differ from CLDR. To follow all
-	// of CLDR's suggestions, use All|CLDR.
-	CLDR
-
-	// Raw can be used to Compose or Parse without Canonicalization.
-	Raw CanonType = 0
-
-	// Replace all deprecated tags with their preferred replacements.
-	Deprecated = DeprecatedBase | DeprecatedScript | DeprecatedRegion
-
-	// All canonicalizations recommended by BCP 47.
-	BCP47 = Deprecated | SuppressScript
-
-	// All canonicalizations.
-	All = BCP47 | Legacy | Macro
-
-	// Default is the canonicalization used by Parse, Make and Compose. To
-	// preserve as much information as possible, canonicalizations that remove
-	// potentially valuable information are not included. The Matcher is
-	// designed to recognize similar tags that would be the same if
-	// they were canonicalized using All.
-	Default = Deprecated | Legacy
-
-	canonLang = DeprecatedBase | Legacy | Macro
-
-	// TODO: LikelyScript, LikelyRegion: suppress similar to ICU.
-)
-
-// canonicalize returns the canonicalized equivalent of the tag and
-// whether there was any change.
-func canonicalize(c CanonType, t language.Tag) (language.Tag, bool) {
-	if c == Raw {
-		return t, false
-	}
-	changed := false
-	if c&SuppressScript != 0 {
-		if t.LangID.SuppressScript() == t.ScriptID {
-			t.ScriptID = 0
-			changed = true
-		}
-	}
-	if c&canonLang != 0 {
-		for {
-			if l, aliasType := t.LangID.Canonicalize(); l != t.LangID {
-				switch aliasType {
-				case language.Legacy:
-					if c&Legacy != 0 {
-						if t.LangID == _sh && t.ScriptID == 0 {
-							t.ScriptID = _Latn
-						}
-						t.LangID = l
-						changed = true
-					}
-				case language.Macro:
-					if c&Macro != 0 {
-						// We deviate here from CLDR. The mapping "nb" -> "no"
-						// qualifies as a typical Macro language mapping.  However,
-						// for legacy reasons, CLDR maps "no", the macro language
-						// code for Norwegian, to the dominant variant "nb". This
-						// change is currently under consideration for CLDR as well.
-						// See http://unicode.org/cldr/trac/ticket/2698 and also
-						// http://unicode.org/cldr/trac/ticket/1790 for some of the
-						// practical implications. TODO: this check could be removed
-						// if CLDR adopts this change.
-						if c&CLDR == 0 || t.LangID != _nb {
-							changed = true
-							t.LangID = l
-						}
-					}
-				case language.Deprecated:
-					if c&DeprecatedBase != 0 {
-						if t.LangID == _mo && t.RegionID == 0 {
-							t.RegionID = _MD
-						}
-						t.LangID = l
-						changed = true
-						// Other canonicalization types may still apply.
-						continue
-					}
-				}
-			} else if c&Legacy != 0 && t.LangID == _no && c&CLDR != 0 {
-				t.LangID = _nb
-				changed = true
-			}
-			break
-		}
-	}
-	if c&DeprecatedScript != 0 {
-		if t.ScriptID == _Qaai {
-			changed = true
-			t.ScriptID = _Zinh
-		}
-	}
-	if c&DeprecatedRegion != 0 {
-		if r := t.RegionID.Canonicalize(); r != t.RegionID {
-			changed = true
-			t.RegionID = r
-		}
-	}
-	return t, changed
-}
-
-// Canonicalize returns the canonicalized equivalent of the tag.
-func (c CanonType) Canonicalize(t Tag) (Tag, error) {
-	// First try fast path.
-	if t.isCompact() {
-		if _, changed := canonicalize(c, compact.Tag(t).Tag()); !changed {
-			return t, nil
-		}
-	}
-	// It is unlikely that one will canonicalize a tag after matching. So do
-	// a slow but simple approach here.
-	if tag, changed := canonicalize(c, t.tag()); changed {
-		tag.RemakeString()
-		return makeTag(tag), nil
-	}
-	return t, nil
-
-}
-
-// Confidence indicates the level of certainty for a given return value.
-// For example, Serbian may be written in Cyrillic or Latin script.
-// The confidence level indicates whether a value was explicitly specified,
-// whether it is typically the only possible value, or whether there is
-// an ambiguity.
-type Confidence int
-
-const (
-	No    Confidence = iota // full confidence that there was no match
-	Low                     // most likely value picked out of a set of alternatives
-	High                    // value is generally assumed to be the correct match
-	Exact                   // exact match or explicitly specified value
-)
-
-var confName = []string{"No", "Low", "High", "Exact"}
-
-func (c Confidence) String() string {
-	return confName[c]
-}
-
-// String returns the canonical string representation of the language tag.
-func (t Tag) String() string {
-	return t.tag().String()
-}
-
-// MarshalText implements encoding.TextMarshaler.
-func (t Tag) MarshalText() (text []byte, err error) {
-	return t.tag().MarshalText()
-}
-
-// UnmarshalText implements encoding.TextUnmarshaler.
-func (t *Tag) UnmarshalText(text []byte) error {
-	var tag language.Tag
-	err := tag.UnmarshalText(text)
-	*t = makeTag(tag)
-	return err
-}
-
-// Base returns the base language of the language tag. If the base language is
-// unspecified, an attempt will be made to infer it from the context.
-// It uses a variant of CLDR's Add Likely Subtags algorithm. This is subject to change.
-func (t Tag) Base() (Base, Confidence) {
-	if b := t.lang(); b != 0 {
-		return Base{b}, Exact
-	}
-	tt := t.tag()
-	c := High
-	if tt.ScriptID == 0 && !tt.RegionID.IsCountry() {
-		c = Low
-	}
-	if tag, err := tt.Maximize(); err == nil && tag.LangID != 0 {
-		return Base{tag.LangID}, c
-	}
-	return Base{0}, No
-}
-
-// Script infers the script for the language tag. If it was not explicitly given, it will infer
-// a most likely candidate.
-// If more than one script is commonly used for a language, the most likely one
-// is returned with a low confidence indication. For example, it returns (Cyrl, Low)
-// for Serbian.
-// If a script cannot be inferred (Zzzz, No) is returned. We do not use Zyyy (undetermined)
-// as one would suspect from the IANA registry for BCP 47. In a Unicode context Zyyy marks
-// common characters (like 1, 2, 3, '.', etc.) and is therefore more like multiple scripts.
-// See http://www.unicode.org/reports/tr24/#Values for more details. Zzzz is also used for
-// unknown value in CLDR.  (Zzzz, Exact) is returned if Zzzz was explicitly specified.
-// Note that an inferred script is never guaranteed to be the correct one. Latin is
-// almost exclusively used for Afrikaans, but Arabic has been used for some texts
-// in the past.  Also, the script that is commonly used may change over time.
-// It uses a variant of CLDR's Add Likely Subtags algorithm. This is subject to change.
-func (t Tag) Script() (Script, Confidence) {
-	if scr := t.script(); scr != 0 {
-		return Script{scr}, Exact
-	}
-	tt := t.tag()
-	sc, c := language.Script(_Zzzz), No
-	if scr := tt.LangID.SuppressScript(); scr != 0 {
-		// Note: it is not always the case that a language with a suppress
-		// script value is only written in one script (e.g. kk, ms, pa).
-		if tt.RegionID == 0 {
-			return Script{scr}, High
-		}
-		sc, c = scr, High
-	}
-	if tag, err := tt.Maximize(); err == nil {
-		if tag.ScriptID != sc {
-			sc, c = tag.ScriptID, Low
-		}
-	} else {
-		tt, _ = canonicalize(Deprecated|Macro, tt)
-		if tag, err := tt.Maximize(); err == nil && tag.ScriptID != sc {
-			sc, c = tag.ScriptID, Low
-		}
-	}
-	return Script{sc}, c
-}
-
-// Region returns the region for the language tag. If it was not explicitly given, it will
-// infer a most likely candidate from the context.
-// It uses a variant of CLDR's Add Likely Subtags algorithm. This is subject to change.
-func (t Tag) Region() (Region, Confidence) {
-	if r := t.region(); r != 0 {
-		return Region{r}, Exact
-	}
-	tt := t.tag()
-	if tt, err := tt.Maximize(); err == nil {
-		return Region{tt.RegionID}, Low // TODO: differentiate between high and low.
-	}
-	tt, _ = canonicalize(Deprecated|Macro, tt)
-	if tag, err := tt.Maximize(); err == nil {
-		return Region{tag.RegionID}, Low
-	}
-	return Region{_ZZ}, No // TODO: return world instead of undetermined?
-}
-
-// Variants returns the variants specified explicitly for this language tag.
-// or nil if no variant was specified.
-func (t Tag) Variants() []Variant {
-	if !compact.Tag(t).MayHaveVariants() {
-		return nil
-	}
-	v := []Variant{}
-	x, str := "", t.tag().Variants()
-	for str != "" {
-		x, str = nextToken(str)
-		v = append(v, Variant{x})
-	}
-	return v
-}
-
-// Parent returns the CLDR parent of t. In CLDR, missing fields in data for a
-// specific language are substituted with fields from the parent language.
-// The parent for a language may change for newer versions of CLDR.
-func (t Tag) Parent() Tag {
-	return Tag(compact.Tag(t).Parent())
-}
-
-// returns token t and the rest of the string.
-func nextToken(s string) (t, tail string) {
-	p := strings.Index(s[1:], "-")
-	if p == -1 {
-		return s[1:], ""
-	}
-	p++
-	return s[1:p], s[p:]
-}
-
-// Extension is a single BCP 47 extension.
-type Extension struct {
-	s string
-}
-
-// String returns the string representation of the extension, including the
-// type tag.
-func (e Extension) String() string {
-	return e.s
-}
-
-// ParseExtension parses s as an extension and returns it on success.
-func ParseExtension(s string) (e Extension, err error) {
-	ext, err := language.ParseExtension(s)
-	return Extension{ext}, err
-}
-
-// Type returns the one-byte extension type of e. It returns 0 for the zero
-// exception.
-func (e Extension) Type() byte {
-	if e.s == "" {
-		return 0
-	}
-	return e.s[0]
-}
-
-// Tokens returns the list of tokens of e.
-func (e Extension) Tokens() []string {
-	return strings.Split(e.s, "-")
-}
-
-// Extension returns the extension of type x for tag t. It will return
-// false for ok if t does not have the requested extension. The returned
-// extension will be invalid in this case.
-func (t Tag) Extension(x byte) (ext Extension, ok bool) {
-	if !compact.Tag(t).MayHaveExtensions() {
-		return Extension{}, false
-	}
-	e, ok := t.tag().Extension(x)
-	return Extension{e}, ok
-}
-
-// Extensions returns all extensions of t.
-func (t Tag) Extensions() []Extension {
-	if !compact.Tag(t).MayHaveExtensions() {
-		return nil
-	}
-	e := []Extension{}
-	for _, ext := range t.tag().Extensions() {
-		e = append(e, Extension{ext})
-	}
-	return e
-}
-
-// TypeForKey returns the type associated with the given key, where key and type
-// are of the allowed values defined for the Unicode locale extension ('u') in
-// http://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers.
-// TypeForKey will traverse the inheritance chain to get the correct value.
-func (t Tag) TypeForKey(key string) string {
-	if !compact.Tag(t).MayHaveExtensions() {
-		if key != "rg" && key != "va" {
-			return ""
-		}
-	}
-	return t.tag().TypeForKey(key)
-}
-
-// SetTypeForKey returns a new Tag with the key set to type, where key and type
-// are of the allowed values defined for the Unicode locale extension ('u') in
-// http://www.unicode.org/reports/tr35/#Unicode_Language_and_Locale_Identifiers.
-// An empty value removes an existing pair with the same key.
-func (t Tag) SetTypeForKey(key, value string) (Tag, error) {
-	tt, err := t.tag().SetTypeForKey(key, value)
-	return makeTag(tt), err
-}
-
-// NumCompactTags is the number of compact tags. The maximum tag is
-// NumCompactTags-1.
-const NumCompactTags = compact.NumCompactTags
-
-// CompactIndex returns an index, where 0 <= index < NumCompactTags, for tags
-// for which data exists in the text repository.The index will change over time
-// and should not be stored in persistent storage. If t does not match a compact
-// index, exact will be false and the compact index will be returned for the
-// first match after repeatedly taking the Parent of t.
-func CompactIndex(t Tag) (index int, exact bool) {
-	id, exact := compact.LanguageID(compact.Tag(t))
-	return int(id), exact
-}
-
-var root = language.Tag{}
-
-// Base is an ISO 639 language code, used for encoding the base language
-// of a language tag.
-type Base struct {
-	langID language.Language
-}
-
-// ParseBase parses a 2- or 3-letter ISO 639 code.
-// It returns a ValueError if s is a well-formed but unknown language identifier
-// or another error if another error occurred.
-func ParseBase(s string) (Base, error) {
-	l, err := language.ParseBase(s)
-	return Base{l}, err
-}
-
-// String returns the BCP 47 representation of the base language.
-func (b Base) String() string {
-	return b.langID.String()
-}
-
-// ISO3 returns the ISO 639-3 language code.
-func (b Base) ISO3() string {
-	return b.langID.ISO3()
-}
-
-// IsPrivateUse reports whether this language code is reserved for private use.
-func (b Base) IsPrivateUse() bool {
-	return b.langID.IsPrivateUse()
-}
-
-// Script is a 4-letter ISO 15924 code for representing scripts.
-// It is idiomatically represented in title case.
-type Script struct {
-	scriptID language.Script
-}
-
-// ParseScript parses a 4-letter ISO 15924 code.
-// It returns a ValueError if s is a well-formed but unknown script identifier
-// or another error if another error occurred.
-func ParseScript(s string) (Script, error) {
-	sc, err := language.ParseScript(s)
-	return Script{sc}, err
-}
-
-// String returns the script code in title case.
-// It returns "Zzzz" for an unspecified script.
-func (s Script) String() string {
-	return s.scriptID.String()
-}
-
-// IsPrivateUse reports whether this script code is reserved for private use.
-func (s Script) IsPrivateUse() bool {
-	return s.scriptID.IsPrivateUse()
-}
-
-// Region is an ISO 3166-1 or UN M.49 code for representing countries and regions.
-type Region struct {
-	regionID language.Region
-}
-
-// EncodeM49 returns the Region for the given UN M.49 code.
-// It returns an error if r is not a valid code.
-func EncodeM49(r int) (Region, error) {
-	rid, err := language.EncodeM49(r)
-	return Region{rid}, err
-}
-
-// ParseRegion parses a 2- or 3-letter ISO 3166-1 or a UN M.49 code.
-// It returns a ValueError if s is a well-formed but unknown region identifier
-// or another error if another error occurred.
-func ParseRegion(s string) (Region, error) {
-	r, err := language.ParseRegion(s)
-	return Region{r}, err
-}
-
-// String returns the BCP 47 representation for the region.
-// It returns "ZZ" for an unspecified region.
-func (r Region) String() string {
-	return r.regionID.String()
-}
-
-// ISO3 returns the 3-letter ISO code of r.
-// Note that not all regions have a 3-letter ISO code.
-// In such cases this method returns "ZZZ".
-func (r Region) ISO3() string {
-	return r.regionID.String()
-}
-
-// M49 returns the UN M.49 encoding of r, or 0 if this encoding
-// is not defined for r.
-func (r Region) M49() int {
-	return r.regionID.M49()
-}
-
-// IsPrivateUse reports whether r has the ISO 3166 User-assigned status. This
-// may include private-use tags that are assigned by CLDR and used in this
-// implementation. So IsPrivateUse and IsCountry can be simultaneously true.
-func (r Region) IsPrivateUse() bool {
-	return r.regionID.IsPrivateUse()
-}
-
-// IsCountry returns whether this region is a country or autonomous area. This
-// includes non-standard definitions from CLDR.
-func (r Region) IsCountry() bool {
-	return r.regionID.IsCountry()
-}
-
-// IsGroup returns whether this region defines a collection of regions. This
-// includes non-standard definitions from CLDR.
-func (r Region) IsGroup() bool {
-	return r.regionID.IsGroup()
-}
-
-// Contains returns whether Region c is contained by Region r. It returns true
-// if c == r.
-func (r Region) Contains(c Region) bool {
-	return r.regionID.Contains(c.regionID)
-}
-
-// TLD returns the country code top-level domain (ccTLD). UK is returned for GB.
-// In all other cases it returns either the region itself or an error.
-//
-// This method may return an error for a region for which there exists a
-// canonical form with a ccTLD. To get that ccTLD canonicalize r first. The
-// region will already be canonicalized it was obtained from a Tag that was
-// obtained using any of the default methods.
-func (r Region) TLD() (Region, error) {
-	tld, err := r.regionID.TLD()
-	return Region{tld}, err
-}
-
-// Canonicalize returns the region or a possible replacement if the region is
-// deprecated. It will not return a replacement for deprecated regions that
-// are split into multiple regions.
-func (r Region) Canonicalize() Region {
-	return Region{r.regionID.Canonicalize()}
-}
-
-// Variant represents a registered variant of a language as defined by BCP 47.
-type Variant struct {
-	variant string
-}
-
-// ParseVariant parses and returns a Variant. An error is returned if s is not
-// a valid variant.
-func ParseVariant(s string) (Variant, error) {
-	v, err := language.ParseVariant(s)
-	return Variant{v.String()}, err
-}
-
-// String returns the string representation of the variant.
-func (v Variant) String() string {
-	return v.variant
-}