+++ /dev/null
-package ut
-
-import (
- "fmt"
- "strconv"
- "strings"
-
- "github.com/go-playground/locales"
-)
-
-const (
- paramZero = "{0}"
- paramOne = "{1}"
- unknownTranslation = ""
-)
-
-// Translator is universal translators
-// translator instance which is a thin wrapper
-// around locales.Translator instance providing
-// some extra functionality
-type Translator interface {
- locales.Translator
-
- // adds a normal translation for a particular language/locale
- // {#} is the only replacement type accepted and are ad infinitum
- // eg. one: '{0} day left' other: '{0} days left'
- Add(key interface{}, text string, override bool) error
-
- // adds a cardinal plural translation for a particular language/locale
- // {0} is the only replacement type accepted and only one variable is accepted as
- // multiple cannot be used for a plural rule determination, unless it is a range;
- // see AddRange below.
- // eg. in locale 'en' one: '{0} day left' other: '{0} days left'
- AddCardinal(key interface{}, text string, rule locales.PluralRule, override bool) error
-
- // adds an ordinal plural translation for a particular language/locale
- // {0} is the only replacement type accepted and only one variable is accepted as
- // multiple cannot be used for a plural rule determination, unless it is a range;
- // see AddRange below.
- // eg. in locale 'en' one: '{0}st day of spring' other: '{0}nd day of spring'
- // - 1st, 2nd, 3rd...
- AddOrdinal(key interface{}, text string, rule locales.PluralRule, override bool) error
-
- // adds a range plural translation for a particular language/locale
- // {0} and {1} are the only replacement types accepted and only these are accepted.
- // eg. in locale 'nl' one: '{0}-{1} day left' other: '{0}-{1} days left'
- AddRange(key interface{}, text string, rule locales.PluralRule, override bool) error
-
- // creates the translation for the locale given the 'key' and params passed in
- T(key interface{}, params ...string) (string, error)
-
- // creates the cardinal translation for the locale given the 'key', 'num' and 'digit' arguments
- // and param passed in
- C(key interface{}, num float64, digits uint64, param string) (string, error)
-
- // creates the ordinal translation for the locale given the 'key', 'num' and 'digit' arguments
- // and param passed in
- O(key interface{}, num float64, digits uint64, param string) (string, error)
-
- // creates the range translation for the locale given the 'key', 'num1', 'digit1', 'num2' and
- // 'digit2' arguments and 'param1' and 'param2' passed in
- R(key interface{}, num1 float64, digits1 uint64, num2 float64, digits2 uint64, param1, param2 string) (string, error)
-
- // VerifyTranslations checks to ensures that no plural rules have been
- // missed within the translations.
- VerifyTranslations() error
-}
-
-var _ Translator = new(translator)
-var _ locales.Translator = new(translator)
-
-type translator struct {
- locales.Translator
- translations map[interface{}]*transText
- cardinalTanslations map[interface{}][]*transText // array index is mapped to locales.PluralRule index + the locales.PluralRuleUnknown
- ordinalTanslations map[interface{}][]*transText
- rangeTanslations map[interface{}][]*transText
-}
-
-type transText struct {
- text string
- indexes []int
-}
-
-func newTranslator(trans locales.Translator) Translator {
- return &translator{
- Translator: trans,
- translations: make(map[interface{}]*transText), // translation text broken up by byte index
- cardinalTanslations: make(map[interface{}][]*transText),
- ordinalTanslations: make(map[interface{}][]*transText),
- rangeTanslations: make(map[interface{}][]*transText),
- }
-}
-
-// Add adds a normal translation for a particular language/locale
-// {#} is the only replacement type accepted and are ad infinitum
-// eg. one: '{0} day left' other: '{0} days left'
-func (t *translator) Add(key interface{}, text string, override bool) error {
-
- if _, ok := t.translations[key]; ok && !override {
- return &ErrConflictingTranslation{locale: t.Locale(), key: key, text: text}
- }
-
- lb := strings.Count(text, "{")
- rb := strings.Count(text, "}")
-
- if lb != rb {
- return &ErrMissingBracket{locale: t.Locale(), key: key, text: text}
- }
-
- trans := &transText{
- text: text,
- }
-
- var idx int
-
- for i := 0; i < lb; i++ {
- s := "{" + strconv.Itoa(i) + "}"
- idx = strings.Index(text, s)
- if idx == -1 {
- return &ErrBadParamSyntax{locale: t.Locale(), param: s, key: key, text: text}
- }
-
- trans.indexes = append(trans.indexes, idx)
- trans.indexes = append(trans.indexes, idx+len(s))
- }
-
- t.translations[key] = trans
-
- return nil
-}
-
-// AddCardinal adds a cardinal plural translation for a particular language/locale
-// {0} is the only replacement type accepted and only one variable is accepted as
-// multiple cannot be used for a plural rule determination, unless it is a range;
-// see AddRange below.
-// eg. in locale 'en' one: '{0} day left' other: '{0} days left'
-func (t *translator) AddCardinal(key interface{}, text string, rule locales.PluralRule, override bool) error {
-
- var verified bool
-
- // verify plural rule exists for locale
- for _, pr := range t.PluralsCardinal() {
- if pr == rule {
- verified = true
- break
- }
- }
-
- if !verified {
- return &ErrCardinalTranslation{text: fmt.Sprintf("error: cardinal plural rule '%s' does not exist for locale '%s' key: '%v' text: '%s'", rule, t.Locale(), key, text)}
- }
-
- tarr, ok := t.cardinalTanslations[key]
- if ok {
- // verify not adding a conflicting record
- if len(tarr) > 0 && tarr[rule] != nil && !override {
- return &ErrConflictingTranslation{locale: t.Locale(), key: key, rule: rule, text: text}
- }
-
- } else {
- tarr = make([]*transText, 7, 7)
- t.cardinalTanslations[key] = tarr
- }
-
- trans := &transText{
- text: text,
- indexes: make([]int, 2, 2),
- }
-
- tarr[rule] = trans
-
- idx := strings.Index(text, paramZero)
- if idx == -1 {
- tarr[rule] = nil
- return &ErrCardinalTranslation{text: fmt.Sprintf("error: parameter '%s' not found, may want to use 'Add' instead of 'AddCardinal'. locale: '%s' key: '%v' text: '%s'", paramZero, t.Locale(), key, text)}
- }
-
- trans.indexes[0] = idx
- trans.indexes[1] = idx + len(paramZero)
-
- return nil
-}
-
-// AddOrdinal adds an ordinal plural translation for a particular language/locale
-// {0} is the only replacement type accepted and only one variable is accepted as
-// multiple cannot be used for a plural rule determination, unless it is a range;
-// see AddRange below.
-// eg. in locale 'en' one: '{0}st day of spring' other: '{0}nd day of spring' - 1st, 2nd, 3rd...
-func (t *translator) AddOrdinal(key interface{}, text string, rule locales.PluralRule, override bool) error {
-
- var verified bool
-
- // verify plural rule exists for locale
- for _, pr := range t.PluralsOrdinal() {
- if pr == rule {
- verified = true
- break
- }
- }
-
- if !verified {
- return &ErrOrdinalTranslation{text: fmt.Sprintf("error: ordinal plural rule '%s' does not exist for locale '%s' key: '%v' text: '%s'", rule, t.Locale(), key, text)}
- }
-
- tarr, ok := t.ordinalTanslations[key]
- if ok {
- // verify not adding a conflicting record
- if len(tarr) > 0 && tarr[rule] != nil && !override {
- return &ErrConflictingTranslation{locale: t.Locale(), key: key, rule: rule, text: text}
- }
-
- } else {
- tarr = make([]*transText, 7, 7)
- t.ordinalTanslations[key] = tarr
- }
-
- trans := &transText{
- text: text,
- indexes: make([]int, 2, 2),
- }
-
- tarr[rule] = trans
-
- idx := strings.Index(text, paramZero)
- if idx == -1 {
- tarr[rule] = nil
- return &ErrOrdinalTranslation{text: fmt.Sprintf("error: parameter '%s' not found, may want to use 'Add' instead of 'AddOrdinal'. locale: '%s' key: '%v' text: '%s'", paramZero, t.Locale(), key, text)}
- }
-
- trans.indexes[0] = idx
- trans.indexes[1] = idx + len(paramZero)
-
- return nil
-}
-
-// AddRange adds a range plural translation for a particular language/locale
-// {0} and {1} are the only replacement types accepted and only these are accepted.
-// eg. in locale 'nl' one: '{0}-{1} day left' other: '{0}-{1} days left'
-func (t *translator) AddRange(key interface{}, text string, rule locales.PluralRule, override bool) error {
-
- var verified bool
-
- // verify plural rule exists for locale
- for _, pr := range t.PluralsRange() {
- if pr == rule {
- verified = true
- break
- }
- }
-
- if !verified {
- return &ErrRangeTranslation{text: fmt.Sprintf("error: range plural rule '%s' does not exist for locale '%s' key: '%v' text: '%s'", rule, t.Locale(), key, text)}
- }
-
- tarr, ok := t.rangeTanslations[key]
- if ok {
- // verify not adding a conflicting record
- if len(tarr) > 0 && tarr[rule] != nil && !override {
- return &ErrConflictingTranslation{locale: t.Locale(), key: key, rule: rule, text: text}
- }
-
- } else {
- tarr = make([]*transText, 7, 7)
- t.rangeTanslations[key] = tarr
- }
-
- trans := &transText{
- text: text,
- indexes: make([]int, 4, 4),
- }
-
- tarr[rule] = trans
-
- idx := strings.Index(text, paramZero)
- if idx == -1 {
- tarr[rule] = nil
- return &ErrRangeTranslation{text: fmt.Sprintf("error: parameter '%s' not found, are you sure you're adding a Range Translation? locale: '%s' key: '%v' text: '%s'", paramZero, t.Locale(), key, text)}
- }
-
- trans.indexes[0] = idx
- trans.indexes[1] = idx + len(paramZero)
-
- idx = strings.Index(text, paramOne)
- if idx == -1 {
- tarr[rule] = nil
- return &ErrRangeTranslation{text: fmt.Sprintf("error: parameter '%s' not found, a Range Translation requires two parameters. locale: '%s' key: '%v' text: '%s'", paramOne, t.Locale(), key, text)}
- }
-
- trans.indexes[2] = idx
- trans.indexes[3] = idx + len(paramOne)
-
- return nil
-}
-
-// T creates the translation for the locale given the 'key' and params passed in
-func (t *translator) T(key interface{}, params ...string) (string, error) {
-
- trans, ok := t.translations[key]
- if !ok {
- return unknownTranslation, ErrUnknowTranslation
- }
-
- b := make([]byte, 0, 64)
-
- var start, end, count int
-
- for i := 0; i < len(trans.indexes); i++ {
- end = trans.indexes[i]
- b = append(b, trans.text[start:end]...)
- b = append(b, params[count]...)
- i++
- start = trans.indexes[i]
- count++
- }
-
- b = append(b, trans.text[start:]...)
-
- return string(b), nil
-}
-
-// C creates the cardinal translation for the locale given the 'key', 'num' and 'digit' arguments and param passed in
-func (t *translator) C(key interface{}, num float64, digits uint64, param string) (string, error) {
-
- tarr, ok := t.cardinalTanslations[key]
- if !ok {
- return unknownTranslation, ErrUnknowTranslation
- }
-
- rule := t.CardinalPluralRule(num, digits)
-
- trans := tarr[rule]
-
- b := make([]byte, 0, 64)
- b = append(b, trans.text[:trans.indexes[0]]...)
- b = append(b, param...)
- b = append(b, trans.text[trans.indexes[1]:]...)
-
- return string(b), nil
-}
-
-// O creates the ordinal translation for the locale given the 'key', 'num' and 'digit' arguments and param passed in
-func (t *translator) O(key interface{}, num float64, digits uint64, param string) (string, error) {
-
- tarr, ok := t.ordinalTanslations[key]
- if !ok {
- return unknownTranslation, ErrUnknowTranslation
- }
-
- rule := t.OrdinalPluralRule(num, digits)
-
- trans := tarr[rule]
-
- b := make([]byte, 0, 64)
- b = append(b, trans.text[:trans.indexes[0]]...)
- b = append(b, param...)
- b = append(b, trans.text[trans.indexes[1]:]...)
-
- return string(b), nil
-}
-
-// R creates the range translation for the locale given the 'key', 'num1', 'digit1', 'num2' and 'digit2' arguments
-// and 'param1' and 'param2' passed in
-func (t *translator) R(key interface{}, num1 float64, digits1 uint64, num2 float64, digits2 uint64, param1, param2 string) (string, error) {
-
- tarr, ok := t.rangeTanslations[key]
- if !ok {
- return unknownTranslation, ErrUnknowTranslation
- }
-
- rule := t.RangePluralRule(num1, digits1, num2, digits2)
-
- trans := tarr[rule]
-
- b := make([]byte, 0, 64)
- b = append(b, trans.text[:trans.indexes[0]]...)
- b = append(b, param1...)
- b = append(b, trans.text[trans.indexes[1]:trans.indexes[2]]...)
- b = append(b, param2...)
- b = append(b, trans.text[trans.indexes[3]:]...)
-
- return string(b), nil
-}
-
-// VerifyTranslations checks to ensures that no plural rules have been
-// missed within the translations.
-func (t *translator) VerifyTranslations() error {
-
- for k, v := range t.cardinalTanslations {
-
- for _, rule := range t.PluralsCardinal() {
-
- if v[rule] == nil {
- return &ErrMissingPluralTranslation{locale: t.Locale(), translationType: "plural", rule: rule, key: k}
- }
- }
- }
-
- for k, v := range t.ordinalTanslations {
-
- for _, rule := range t.PluralsOrdinal() {
-
- if v[rule] == nil {
- return &ErrMissingPluralTranslation{locale: t.Locale(), translationType: "ordinal", rule: rule, key: k}
- }
- }
- }
-
- for k, v := range t.rangeTanslations {
-
- for _, rule := range t.PluralsRange() {
-
- if v[rule] == nil {
- return &ErrMissingPluralTranslation{locale: t.Locale(), translationType: "range", rule: rule, key: k}
- }
- }
- }
-
- return nil
-}
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