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load("@io_bazel_rules_go//go:def.bzl", "go_library")
go_library(
name = "go_default_library",
srcs = ["rules.go"],
importmap = "go-common/vendor/github.com/go-playground/locales",
importpath = "github.com/go-playground/locales",
visibility = ["//visibility:public"],
deps = ["//vendor/github.com/go-playground/locales/currency:go_default_library"],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [
":package-srcs",
"//vendor/github.com/go-playground/locales/currency:all-srcs",
],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

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The MIT License (MIT)
Copyright (c) 2016 Go Playground
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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## locales
<img align="right" src="https://raw.githubusercontent.com/go-playground/locales/master/logo.png">![Project status](https://img.shields.io/badge/version-0.11.1-green.svg)
[![Build Status](https://semaphoreci.com/api/v1/joeybloggs/locales/branches/master/badge.svg)](https://semaphoreci.com/joeybloggs/locales)
[![Go Report Card](https://goreportcard.com/badge/github.com/go-playground/locales)](https://goreportcard.com/report/github.com/go-playground/locales)
[![GoDoc](https://godoc.org/github.com/go-playground/locales?status.svg)](https://godoc.org/github.com/go-playground/locales)
![License](https://img.shields.io/dub/l/vibe-d.svg)
[![Gitter](https://badges.gitter.im/go-playground/locales.svg)](https://gitter.im/go-playground/locales?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
Locales is a set of locales generated from the [Unicode CLDR Project](http://cldr.unicode.org/) which can be used independently or within
an i18n package; these were built for use with, but not exclusive to, [Universal Translator](https://github.com/go-playground/universal-translator).
Features
--------
- [x] Rules generated from the latest [CLDR](http://cldr.unicode.org/index/downloads) data, v31.0.1
- [x] Contains Cardinal, Ordinal and Range Plural Rules
- [x] Contains Month, Weekday and Timezone translations built in
- [x] Contains Date & Time formatting functions
- [x] Contains Number, Currency, Accounting and Percent formatting functions
- [x] Supports the "Gregorian" calendar only ( my time isn't unlimited, had to draw the line somewhere )
Full Tests
--------------------
I could sure use your help adding tests for every locale, it is a huge undertaking and I just don't have the free time to do it all at the moment;
any help would be **greatly appreciated!!!!** please see [issue](https://github.com/go-playground/locales/issues/1) for details.
Installation
-----------
Use go get
```shell
go get github.com/go-playground/locales
```
NOTES
--------
You'll notice most return types are []byte, this is because most of the time the results will be concatenated with a larger body
of text and can avoid some allocations if already appending to a byte array, otherwise just cast as string.
Usage
-------
```go
package main
import (
"fmt"
"time"
"github.com/go-playground/locales/currency"
"github.com/go-playground/locales/en_CA"
)
func main() {
loc, _ := time.LoadLocation("America/Toronto")
datetime := time.Date(2016, 02, 03, 9, 0, 1, 0, loc)
l := en_CA.New()
// Dates
fmt.Println(l.FmtDateFull(datetime))
fmt.Println(l.FmtDateLong(datetime))
fmt.Println(l.FmtDateMedium(datetime))
fmt.Println(l.FmtDateShort(datetime))
// Times
fmt.Println(l.FmtTimeFull(datetime))
fmt.Println(l.FmtTimeLong(datetime))
fmt.Println(l.FmtTimeMedium(datetime))
fmt.Println(l.FmtTimeShort(datetime))
// Months Wide
fmt.Println(l.MonthWide(time.January))
fmt.Println(l.MonthWide(time.February))
fmt.Println(l.MonthWide(time.March))
// ...
// Months Abbreviated
fmt.Println(l.MonthAbbreviated(time.January))
fmt.Println(l.MonthAbbreviated(time.February))
fmt.Println(l.MonthAbbreviated(time.March))
// ...
// Months Narrow
fmt.Println(l.MonthNarrow(time.January))
fmt.Println(l.MonthNarrow(time.February))
fmt.Println(l.MonthNarrow(time.March))
// ...
// Weekdays Wide
fmt.Println(l.WeekdayWide(time.Sunday))
fmt.Println(l.WeekdayWide(time.Monday))
fmt.Println(l.WeekdayWide(time.Tuesday))
// ...
// Weekdays Abbreviated
fmt.Println(l.WeekdayAbbreviated(time.Sunday))
fmt.Println(l.WeekdayAbbreviated(time.Monday))
fmt.Println(l.WeekdayAbbreviated(time.Tuesday))
// ...
// Weekdays Short
fmt.Println(l.WeekdayShort(time.Sunday))
fmt.Println(l.WeekdayShort(time.Monday))
fmt.Println(l.WeekdayShort(time.Tuesday))
// ...
// Weekdays Narrow
fmt.Println(l.WeekdayNarrow(time.Sunday))
fmt.Println(l.WeekdayNarrow(time.Monday))
fmt.Println(l.WeekdayNarrow(time.Tuesday))
// ...
var f64 float64
f64 = -10356.4523
// Number
fmt.Println(l.FmtNumber(f64, 2))
// Currency
fmt.Println(l.FmtCurrency(f64, 2, currency.CAD))
fmt.Println(l.FmtCurrency(f64, 2, currency.USD))
// Accounting
fmt.Println(l.FmtAccounting(f64, 2, currency.CAD))
fmt.Println(l.FmtAccounting(f64, 2, currency.USD))
f64 = 78.12
// Percent
fmt.Println(l.FmtPercent(f64, 0))
// Plural Rules for locale, so you know what rules you must cover
fmt.Println(l.PluralsCardinal())
fmt.Println(l.PluralsOrdinal())
// Cardinal Plural Rules
fmt.Println(l.CardinalPluralRule(1, 0))
fmt.Println(l.CardinalPluralRule(1.0, 0))
fmt.Println(l.CardinalPluralRule(1.0, 1))
fmt.Println(l.CardinalPluralRule(3, 0))
// Ordinal Plural Rules
fmt.Println(l.OrdinalPluralRule(21, 0)) // 21st
fmt.Println(l.OrdinalPluralRule(22, 0)) // 22nd
fmt.Println(l.OrdinalPluralRule(33, 0)) // 33rd
fmt.Println(l.OrdinalPluralRule(34, 0)) // 34th
// Range Plural Rules
fmt.Println(l.RangePluralRule(1, 0, 1, 0)) // 1-1
fmt.Println(l.RangePluralRule(1, 0, 2, 0)) // 1-2
fmt.Println(l.RangePluralRule(5, 0, 8, 0)) // 5-8
}
```
NOTES:
-------
These rules were generated from the [Unicode CLDR Project](http://cldr.unicode.org/), if you encounter any issues
I strongly encourage contributing to the CLDR project to get the locale information corrected and the next time
these locales are regenerated the fix will come with.
I do however realize that time constraints are often important and so there are two options:
1. Create your own locale, copy, paste and modify, and ensure it complies with the `Translator` interface.
2. Add an exception in the locale generation code directly and once regenerated, fix will be in place.
Please to not make fixes inside the locale files, they WILL get overwritten when the locales are regenerated.
License
------
Distributed under MIT License, please see license file in code for more details.

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load("@io_bazel_rules_go//go:def.bzl", "go_library")
go_library(
name = "go_default_library",
srcs = ["currency.go"],
importmap = "go-common/vendor/github.com/go-playground/locales/currency",
importpath = "github.com/go-playground/locales/currency",
visibility = ["//visibility:public"],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

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package currency
// Type is the currency type associated with the locales currency enum
type Type int
// locale currencies
const (
ADP Type = iota
AED
AFA
AFN
ALK
ALL
AMD
ANG
AOA
AOK
AON
AOR
ARA
ARL
ARM
ARP
ARS
ATS
AUD
AWG
AZM
AZN
BAD
BAM
BAN
BBD
BDT
BEC
BEF
BEL
BGL
BGM
BGN
BGO
BHD
BIF
BMD
BND
BOB
BOL
BOP
BOV
BRB
BRC
BRE
BRL
BRN
BRR
BRZ
BSD
BTN
BUK
BWP
BYB
BYN
BYR
BZD
CAD
CDF
CHE
CHF
CHW
CLE
CLF
CLP
CNX
CNY
COP
COU
CRC
CSD
CSK
CUC
CUP
CVE
CYP
CZK
DDM
DEM
DJF
DKK
DOP
DZD
ECS
ECV
EEK
EGP
ERN
ESA
ESB
ESP
ETB
EUR
FIM
FJD
FKP
FRF
GBP
GEK
GEL
GHC
GHS
GIP
GMD
GNF
GNS
GQE
GRD
GTQ
GWE
GWP
GYD
HKD
HNL
HRD
HRK
HTG
HUF
IDR
IEP
ILP
ILR
ILS
INR
IQD
IRR
ISJ
ISK
ITL
JMD
JOD
JPY
KES
KGS
KHR
KMF
KPW
KRH
KRO
KRW
KWD
KYD
KZT
LAK
LBP
LKR
LRD
LSL
LTL
LTT
LUC
LUF
LUL
LVL
LVR
LYD
MAD
MAF
MCF
MDC
MDL
MGA
MGF
MKD
MKN
MLF
MMK
MNT
MOP
MRO
MTL
MTP
MUR
MVP
MVR
MWK
MXN
MXP
MXV
MYR
MZE
MZM
MZN
NAD
NGN
NIC
NIO
NLG
NOK
NPR
NZD
OMR
PAB
PEI
PEN
PES
PGK
PHP
PKR
PLN
PLZ
PTE
PYG
QAR
RHD
ROL
RON
RSD
RUB
RUR
RWF
SAR
SBD
SCR
SDD
SDG
SDP
SEK
SGD
SHP
SIT
SKK
SLL
SOS
SRD
SRG
SSP
STD
SUR
SVC
SYP
SZL
THB
TJR
TJS
TMM
TMT
TND
TOP
TPE
TRL
TRY
TTD
TWD
TZS
UAH
UAK
UGS
UGX
USD
USN
USS
UYI
UYP
UYU
UZS
VEB
VEF
VND
VNN
VUV
WST
XAF
XAG
XAU
XBA
XBB
XBC
XBD
XCD
XDR
XEU
XFO
XFU
XOF
XPD
XPF
XPT
XRE
XSU
XTS
XUA
XXX
YDD
YER
YUD
YUM
YUN
YUR
ZAL
ZAR
ZMK
ZMW
ZRN
ZRZ
ZWD
ZWL
ZWR
)

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package locales
import (
"strconv"
"time"
"github.com/go-playground/locales/currency"
)
// // ErrBadNumberValue is returned when the number passed for
// // plural rule determination cannot be parsed
// type ErrBadNumberValue struct {
// NumberValue string
// InnerError error
// }
// // Error returns ErrBadNumberValue error string
// func (e *ErrBadNumberValue) Error() string {
// return fmt.Sprintf("Invalid Number Value '%s' %s", e.NumberValue, e.InnerError)
// }
// var _ error = new(ErrBadNumberValue)
// PluralRule denotes the type of plural rules
type PluralRule int
// PluralRule's
const (
PluralRuleUnknown PluralRule = iota
PluralRuleZero // zero
PluralRuleOne // one - singular
PluralRuleTwo // two - dual
PluralRuleFew // few - paucal
PluralRuleMany // many - also used for fractions if they have a separate class
PluralRuleOther // other - required—general plural form—also used if the language only has a single form
)
const (
pluralsString = "UnknownZeroOneTwoFewManyOther"
)
// Translator encapsulates an instance of a locale
// NOTE: some values are returned as a []byte just in case the caller
// wishes to add more and can help avoid allocations; otherwise just cast as string
type Translator interface {
// The following Functions are for overriding, debugging or developing
// with a Translator Locale
// Locale returns the string value of the translator
Locale() string
// returns an array of cardinal plural rules associated
// with this translator
PluralsCardinal() []PluralRule
// returns an array of ordinal plural rules associated
// with this translator
PluralsOrdinal() []PluralRule
// returns an array of range plural rules associated
// with this translator
PluralsRange() []PluralRule
// returns the cardinal PluralRule given 'num' and digits/precision of 'v' for locale
CardinalPluralRule(num float64, v uint64) PluralRule
// returns the ordinal PluralRule given 'num' and digits/precision of 'v' for locale
OrdinalPluralRule(num float64, v uint64) PluralRule
// returns the ordinal PluralRule given 'num1', 'num2' and digits/precision of 'v1' and 'v2' for locale
RangePluralRule(num1 float64, v1 uint64, num2 float64, v2 uint64) PluralRule
// returns the locales abbreviated month given the 'month' provided
MonthAbbreviated(month time.Month) string
// returns the locales abbreviated months
MonthsAbbreviated() []string
// returns the locales narrow month given the 'month' provided
MonthNarrow(month time.Month) string
// returns the locales narrow months
MonthsNarrow() []string
// returns the locales wide month given the 'month' provided
MonthWide(month time.Month) string
// returns the locales wide months
MonthsWide() []string
// returns the locales abbreviated weekday given the 'weekday' provided
WeekdayAbbreviated(weekday time.Weekday) string
// returns the locales abbreviated weekdays
WeekdaysAbbreviated() []string
// returns the locales narrow weekday given the 'weekday' provided
WeekdayNarrow(weekday time.Weekday) string
// WeekdaysNarrowreturns the locales narrow weekdays
WeekdaysNarrow() []string
// returns the locales short weekday given the 'weekday' provided
WeekdayShort(weekday time.Weekday) string
// returns the locales short weekdays
WeekdaysShort() []string
// returns the locales wide weekday given the 'weekday' provided
WeekdayWide(weekday time.Weekday) string
// returns the locales wide weekdays
WeekdaysWide() []string
// The following Functions are common Formatting functionsfor the Translator's Locale
// returns 'num' with digits/precision of 'v' for locale and handles both Whole and Real numbers based on 'v'
FmtNumber(num float64, v uint64) string
// returns 'num' with digits/precision of 'v' for locale and handles both Whole and Real numbers based on 'v'
// NOTE: 'num' passed into FmtPercent is assumed to be in percent already
FmtPercent(num float64, v uint64) string
// returns the currency representation of 'num' with digits/precision of 'v' for locale
FmtCurrency(num float64, v uint64, currency currency.Type) string
// returns the currency representation of 'num' with digits/precision of 'v' for locale
// in accounting notation.
FmtAccounting(num float64, v uint64, currency currency.Type) string
// returns the short date representation of 't' for locale
FmtDateShort(t time.Time) string
// returns the medium date representation of 't' for locale
FmtDateMedium(t time.Time) string
// returns the long date representation of 't' for locale
FmtDateLong(t time.Time) string
// returns the full date representation of 't' for locale
FmtDateFull(t time.Time) string
// returns the short time representation of 't' for locale
FmtTimeShort(t time.Time) string
// returns the medium time representation of 't' for locale
FmtTimeMedium(t time.Time) string
// returns the long time representation of 't' for locale
FmtTimeLong(t time.Time) string
// returns the full time representation of 't' for locale
FmtTimeFull(t time.Time) string
}
// String returns the string value of PluralRule
func (p PluralRule) String() string {
switch p {
case PluralRuleZero:
return pluralsString[7:11]
case PluralRuleOne:
return pluralsString[11:14]
case PluralRuleTwo:
return pluralsString[14:17]
case PluralRuleFew:
return pluralsString[17:20]
case PluralRuleMany:
return pluralsString[20:24]
case PluralRuleOther:
return pluralsString[24:]
default:
return pluralsString[:7]
}
}
//
// Precision Notes:
//
// must specify a precision >= 0, and here is why https://play.golang.org/p/LyL90U0Vyh
//
// v := float64(3.141)
// i := float64(int64(v))
//
// fmt.Println(v - i)
//
// or
//
// s := strconv.FormatFloat(v-i, 'f', -1, 64)
// fmt.Println(s)
//
// these will not print what you'd expect: 0.14100000000000001
// and so this library requires a precision to be specified, or
// inaccurate plural rules could be applied.
//
//
//
// n - absolute value of the source number (integer and decimals).
// i - integer digits of n.
// v - number of visible fraction digits in n, with trailing zeros.
// w - number of visible fraction digits in n, without trailing zeros.
// f - visible fractional digits in n, with trailing zeros.
// t - visible fractional digits in n, without trailing zeros.
//
//
// Func(num float64, v uint64) // v = digits/precision and prevents -1 as a special case as this can lead to very unexpected behaviour, see precision note's above.
//
// n := math.Abs(num)
// i := int64(n)
// v := v
//
//
// w := strconv.FormatFloat(num-float64(i), 'f', int(v), 64) // then parse backwards on string until no more zero's....
// f := strconv.FormatFloat(n, 'f', int(v), 64) // then turn everything after decimal into an int64
// t := strconv.FormatFloat(n, 'f', int(v), 64) // then parse backwards on string until no more zero's....
//
//
//
// General Inclusion Rules
// - v will always be available inherently
// - all require n
// - w requires i
//
// W returns the number of visible fraction digits in N, without trailing zeros.
func W(n float64, v uint64) (w int64) {
s := strconv.FormatFloat(n-float64(int64(n)), 'f', int(v), 64)
// with either be '0' or '0.xxxx', so if 1 then w will be zero
// otherwise need to parse
if len(s) != 1 {
s = s[2:]
end := len(s) + 1
for i := end; i >= 0; i-- {
if s[i] != '0' {
end = i + 1
break
}
}
w = int64(len(s[:end]))
}
return
}
// F returns the visible fractional digits in N, with trailing zeros.
func F(n float64, v uint64) (f int64) {
s := strconv.FormatFloat(n-float64(int64(n)), 'f', int(v), 64)
// with either be '0' or '0.xxxx', so if 1 then f will be zero
// otherwise need to parse
if len(s) != 1 {
// ignoring error, because it can't fail as we generated
// the string internally from a real number
f, _ = strconv.ParseInt(s[2:], 10, 64)
}
return
}
// T returns the visible fractional digits in N, without trailing zeros.
func T(n float64, v uint64) (t int64) {
s := strconv.FormatFloat(n-float64(int64(n)), 'f', int(v), 64)
// with either be '0' or '0.xxxx', so if 1 then t will be zero
// otherwise need to parse
if len(s) != 1 {
s = s[2:]
end := len(s) + 1
for i := end; i >= 0; i-- {
if s[i] != '0' {
end = i + 1
break
}
}
// ignoring error, because it can't fail as we generated
// the string internally from a real number
t, _ = strconv.ParseInt(s[:end], 10, 64)
}
return
}

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load("@io_bazel_rules_go//go:def.bzl", "go_library")
go_library(
name = "go_default_library",
srcs = [
"errors.go",
"import_export.go",
"translator.go",
"universal_translator.go",
],
importmap = "go-common/vendor/github.com/go-playground/universal-translator",
importpath = "github.com/go-playground/universal-translator",
visibility = ["//visibility:public"],
deps = ["//vendor/github.com/go-playground/locales:go_default_library"],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
visibility = ["//visibility:public"],
)

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The MIT License (MIT)
Copyright (c) 2016 Go Playground
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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## universal-translator
<img align="right" src="https://raw.githubusercontent.com/go-playground/universal-translator/master/logo.png">![Project status](https://img.shields.io/badge/version-0.16.0-green.svg)
[![Build Status](https://semaphoreci.com/api/v1/joeybloggs/universal-translator/branches/master/badge.svg)](https://semaphoreci.com/joeybloggs/universal-translator)
[![Coverage Status](https://coveralls.io/repos/github/go-playground/universal-translator/badge.svg)](https://coveralls.io/github/go-playground/universal-translator)
[![Go Report Card](https://goreportcard.com/badge/github.com/go-playground/universal-translator)](https://goreportcard.com/report/github.com/go-playground/universal-translator)
[![GoDoc](https://godoc.org/github.com/go-playground/universal-translator?status.svg)](https://godoc.org/github.com/go-playground/universal-translator)
![License](https://img.shields.io/dub/l/vibe-d.svg)
[![Gitter](https://badges.gitter.im/go-playground/universal-translator.svg)](https://gitter.im/go-playground/universal-translator?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
Universal Translator is an i18n Translator for Go/Golang using CLDR data + pluralization rules
Why another i18n library?
--------------------------
Because none of the plural rules seem to be correct out there, including the previous implementation of this package,
so I took it upon myself to create [locales](https://github.com/go-playground/locales) for everyone to use; this package
is a thin wrapper around [locales](https://github.com/go-playground/locales) in order to store and translate text for
use in your applications.
Features
--------
- [x] Rules generated from the [CLDR](http://cldr.unicode.org/index/downloads) data, v30.0.3
- [x] Contains Cardinal, Ordinal and Range Plural Rules
- [x] Contains Month, Weekday and Timezone translations built in
- [x] Contains Date & Time formatting functions
- [x] Contains Number, Currency, Accounting and Percent formatting functions
- [x] Supports the "Gregorian" calendar only ( my time isn't unlimited, had to draw the line somewhere )
- [x] Support loading translations from files
- [x] Exporting translations to file(s), mainly for getting them professionally translated
- [ ] Code Generation for translation files -> Go code.. i.e. after it has been professionally translated
- [ ] Tests for all languages, I need help with this, please see [here](https://github.com/go-playground/locales/issues/1)
Installation
-----------
Use go get
```shell
go get github.com/go-playground/universal-translator
```
Usage & Documentation
-------
Please see https://godoc.org/github.com/go-playground/universal-translator for usage docs
##### Examples:
- [Basic](https://github.com/go-playground/universal-translator/tree/master/examples/basic)
- [Full - no files](https://github.com/go-playground/universal-translator/tree/master/examples/full-no-files)
- [Full - with files](https://github.com/go-playground/universal-translator/tree/master/examples/full-with-files)
File formatting
--------------
All types, Plain substitution, Cardinal, Ordinal and Range translations can all be contained withing the same file(s);
they are only separated for easy viewing.
##### Examples:
- [Formats](https://github.com/go-playground/universal-translator/tree/master/examples/file-formats)
##### Basic Makeup
NOTE: not all fields are needed for all translation types, see [examples](https://github.com/go-playground/universal-translator/tree/master/examples/file-formats)
```json
{
"locale": "en",
"key": "days-left",
"trans": "You have {0} day left.",
"type": "Cardinal",
"rule": "One",
"override": false
}
```
|Field|Description|
|---|---|
|locale|The locale for which the translation is for.|
|key|The translation key that will be used to store and lookup each translation; normally it is a string or integer.|
|trans|The actual translation text.|
|type|The type of translation Cardinal, Ordinal, Range or "" for a plain substitution(not required to be defined if plain used)|
|rule|The plural rule for which the translation is for eg. One, Two, Few, Many or Other.(not required to be defined if plain used)|
|override|If you wish to override an existing translation that has already been registered, set this to 'true'. 99% of the time there is no need to define it.|
Help With Tests
---------------
To anyone interesting in helping or contributing, I sure could use some help creating tests for each language.
Please see issue [here](https://github.com/go-playground/locales/issues/1) for details.
License
------
Distributed under MIT License, please see license file in code for more details.

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package ut
import (
"errors"
"fmt"
"github.com/go-playground/locales"
)
var (
// ErrUnknowTranslation indicates the translation could not be found
ErrUnknowTranslation = errors.New("Unknown Translation")
)
var _ error = new(ErrConflictingTranslation)
var _ error = new(ErrRangeTranslation)
var _ error = new(ErrOrdinalTranslation)
var _ error = new(ErrCardinalTranslation)
var _ error = new(ErrMissingPluralTranslation)
var _ error = new(ErrExistingTranslator)
// ErrExistingTranslator is the error representing a conflicting translator
type ErrExistingTranslator struct {
locale string
}
// Error returns ErrExistingTranslator's internal error text
func (e *ErrExistingTranslator) Error() string {
return fmt.Sprintf("error: conflicting translator for locale '%s'", e.locale)
}
// ErrConflictingTranslation is the error representing a conflicting translation
type ErrConflictingTranslation struct {
locale string
key interface{}
rule locales.PluralRule
text string
}
// Error returns ErrConflictingTranslation's internal error text
func (e *ErrConflictingTranslation) Error() string {
if _, ok := e.key.(string); !ok {
return fmt.Sprintf("error: conflicting key '%#v' rule '%s' with text '%s' for locale '%s', value being ignored", e.key, e.rule, e.text, e.locale)
}
return fmt.Sprintf("error: conflicting key '%s' rule '%s' with text '%s' for locale '%s', value being ignored", e.key, e.rule, e.text, e.locale)
}
// ErrRangeTranslation is the error representing a range translation error
type ErrRangeTranslation struct {
text string
}
// Error returns ErrRangeTranslation's internal error text
func (e *ErrRangeTranslation) Error() string {
return e.text
}
// ErrOrdinalTranslation is the error representing an ordinal translation error
type ErrOrdinalTranslation struct {
text string
}
// Error returns ErrOrdinalTranslation's internal error text
func (e *ErrOrdinalTranslation) Error() string {
return e.text
}
// ErrCardinalTranslation is the error representing a cardinal translation error
type ErrCardinalTranslation struct {
text string
}
// Error returns ErrCardinalTranslation's internal error text
func (e *ErrCardinalTranslation) Error() string {
return e.text
}
// ErrMissingPluralTranslation is the error signifying a missing translation given
// the locales plural rules.
type ErrMissingPluralTranslation struct {
locale string
key interface{}
rule locales.PluralRule
translationType string
}
// Error returns ErrMissingPluralTranslation's internal error text
func (e *ErrMissingPluralTranslation) Error() string {
if _, ok := e.key.(string); !ok {
return fmt.Sprintf("error: missing '%s' plural rule '%s' for translation with key '%#v' and locale '%s'", e.translationType, e.rule, e.key, e.locale)
}
return fmt.Sprintf("error: missing '%s' plural rule '%s' for translation with key '%s' and locale '%s'", e.translationType, e.rule, e.key, e.locale)
}
// ErrMissingBracket is the error representing a missing bracket in a translation
// eg. This is a {0 <-- missing ending '}'
type ErrMissingBracket struct {
locale string
key interface{}
text string
}
// Error returns ErrMissingBracket error message
func (e *ErrMissingBracket) Error() string {
return fmt.Sprintf("error: missing bracket '{}', in translation. locale: '%s' key: '%v' text: '%s'", e.locale, e.key, e.text)
}
// ErrBadParamSyntax is the error representing a bad parameter definition in a translation
// eg. This is a {must-be-int}
type ErrBadParamSyntax struct {
locale string
param string
key interface{}
text string
}
// Error returns ErrBadParamSyntax error message
func (e *ErrBadParamSyntax) Error() string {
return fmt.Sprintf("error: bad parameter syntax, missing parameter '%s' in translation. locale: '%s' key: '%v' text: '%s'", e.param, e.locale, e.key, e.text)
}
// import/export errors
// ErrMissingLocale is the error representing an expected locale that could
// not be found aka locale not registered with the UniversalTranslator Instance
type ErrMissingLocale struct {
locale string
}
// Error returns ErrMissingLocale's internal error text
func (e *ErrMissingLocale) Error() string {
return fmt.Sprintf("error: locale '%s' not registered.", e.locale)
}
// ErrBadPluralDefinition is the error representing an incorrect plural definition
// usually found within translations defined within files during the import process.
type ErrBadPluralDefinition struct {
tl translation
}
// Error returns ErrBadPluralDefinition's internal error text
func (e *ErrBadPluralDefinition) Error() string {
return fmt.Sprintf("error: bad plural definition '%#v'", e.tl)
}

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package ut
import (
"encoding/json"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"io"
"github.com/go-playground/locales"
)
type translation struct {
Locale string `json:"locale"`
Key interface{} `json:"key"` // either string or integer
Translation string `json:"trans"`
PluralType string `json:"type,omitempty"`
PluralRule string `json:"rule,omitempty"`
OverrideExisting bool `json:"override,omitempty"`
}
const (
cardinalType = "Cardinal"
ordinalType = "Ordinal"
rangeType = "Range"
)
// ImportExportFormat is the format of the file import or export
type ImportExportFormat uint8
// supported Export Formats
const (
FormatJSON ImportExportFormat = iota
)
// Export writes the translations out to a file on disk.
//
// NOTE: this currently only works with string or int translations keys.
func (t *UniversalTranslator) Export(format ImportExportFormat, dirname string) error {
_, err := os.Stat(dirname)
fmt.Println(dirname, err, os.IsNotExist(err))
if err != nil {
if !os.IsNotExist(err) {
return err
}
if err = os.MkdirAll(dirname, 0744); err != nil {
return err
}
}
// build up translations
var trans []translation
var b []byte
var ext string
for _, locale := range t.translators {
for k, v := range locale.(*translator).translations {
trans = append(trans, translation{
Locale: locale.Locale(),
Key: k,
Translation: v.text,
})
}
for k, pluralTrans := range locale.(*translator).cardinalTanslations {
for i, plural := range pluralTrans {
// leave enough for all plural rules
// but not all are set for all languages.
if plural == nil {
continue
}
trans = append(trans, translation{
Locale: locale.Locale(),
Key: k.(string),
Translation: plural.text,
PluralType: cardinalType,
PluralRule: locales.PluralRule(i).String(),
})
}
}
for k, pluralTrans := range locale.(*translator).ordinalTanslations {
for i, plural := range pluralTrans {
// leave enough for all plural rules
// but not all are set for all languages.
if plural == nil {
continue
}
trans = append(trans, translation{
Locale: locale.Locale(),
Key: k.(string),
Translation: plural.text,
PluralType: ordinalType,
PluralRule: locales.PluralRule(i).String(),
})
}
}
for k, pluralTrans := range locale.(*translator).rangeTanslations {
for i, plural := range pluralTrans {
// leave enough for all plural rules
// but not all are set for all languages.
if plural == nil {
continue
}
trans = append(trans, translation{
Locale: locale.Locale(),
Key: k.(string),
Translation: plural.text,
PluralType: rangeType,
PluralRule: locales.PluralRule(i).String(),
})
}
}
switch format {
case FormatJSON:
b, err = json.MarshalIndent(trans, "", " ")
ext = ".json"
}
if err != nil {
return err
}
err = ioutil.WriteFile(filepath.Join(dirname, fmt.Sprintf("%s%s", locale.Locale(), ext)), b, 0644)
if err != nil {
return err
}
trans = trans[0:0]
}
return nil
}
// Import reads the translations out of a file or directory on disk.
//
// NOTE: this currently only works with string or int translations keys.
func (t *UniversalTranslator) Import(format ImportExportFormat, dirnameOrFilename string) error {
fi, err := os.Stat(dirnameOrFilename)
if err != nil {
return err
}
processFn := func(filename string) error {
f, err := os.Open(filename)
if err != nil {
return err
}
defer f.Close()
return t.ImportByReader(format, f)
}
if !fi.IsDir() {
return processFn(dirnameOrFilename)
}
// recursively go through directory
walker := func(path string, info os.FileInfo, err error) error {
if info.IsDir() {
return nil
}
switch format {
case FormatJSON:
// skip non JSON files
if filepath.Ext(info.Name()) != ".json" {
return nil
}
}
return processFn(path)
}
return filepath.Walk(dirnameOrFilename, walker)
}
// ImportByReader imports the the translations found within the contents read from the supplied reader.
//
// NOTE: generally used when assets have been embedded into the binary and are already in memory.
func (t *UniversalTranslator) ImportByReader(format ImportExportFormat, reader io.Reader) error {
b, err := ioutil.ReadAll(reader)
if err != nil {
return err
}
var trans []translation
switch format {
case FormatJSON:
err = json.Unmarshal(b, &trans)
}
if err != nil {
return err
}
for _, tl := range trans {
locale, found := t.FindTranslator(tl.Locale)
if !found {
return &ErrMissingLocale{locale: tl.Locale}
}
pr := stringToPR(tl.PluralRule)
if pr == locales.PluralRuleUnknown {
err = locale.Add(tl.Key, tl.Translation, tl.OverrideExisting)
if err != nil {
return err
}
continue
}
switch tl.PluralType {
case cardinalType:
err = locale.AddCardinal(tl.Key, tl.Translation, pr, tl.OverrideExisting)
case ordinalType:
err = locale.AddOrdinal(tl.Key, tl.Translation, pr, tl.OverrideExisting)
case rangeType:
err = locale.AddRange(tl.Key, tl.Translation, pr, tl.OverrideExisting)
default:
return &ErrBadPluralDefinition{tl: tl}
}
if err != nil {
return err
}
}
return nil
}
func stringToPR(s string) locales.PluralRule {
switch s {
case "One":
return locales.PluralRuleOne
case "Two":
return locales.PluralRuleTwo
case "Few":
return locales.PluralRuleFew
case "Many":
return locales.PluralRuleMany
case "Other":
return locales.PluralRuleOther
default:
return locales.PluralRuleUnknown
}
}

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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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@ -0,0 +1,113 @@
package ut
import (
"strings"
"github.com/go-playground/locales"
)
// UniversalTranslator holds all locale & translation data
type UniversalTranslator struct {
translators map[string]Translator
fallback Translator
}
// New returns a new UniversalTranslator instance set with
// the fallback locale and locales it should support
func New(fallback locales.Translator, supportedLocales ...locales.Translator) *UniversalTranslator {
t := &UniversalTranslator{
translators: make(map[string]Translator),
}
for _, v := range supportedLocales {
trans := newTranslator(v)
t.translators[strings.ToLower(trans.Locale())] = trans
if fallback.Locale() == v.Locale() {
t.fallback = trans
}
}
if t.fallback == nil && fallback != nil {
t.fallback = newTranslator(fallback)
}
return t
}
// FindTranslator trys to find a Translator based on an array of locales
// and returns the first one it can find, otherwise returns the
// fallback translator.
func (t *UniversalTranslator) FindTranslator(locales ...string) (trans Translator, found bool) {
for _, locale := range locales {
if trans, found = t.translators[strings.ToLower(locale)]; found {
return
}
}
return t.fallback, false
}
// GetTranslator returns the specified translator for the given locale,
// or fallback if not found
func (t *UniversalTranslator) GetTranslator(locale string) (trans Translator, found bool) {
if trans, found = t.translators[strings.ToLower(locale)]; found {
return
}
return t.fallback, false
}
// GetFallback returns the fallback locale
func (t *UniversalTranslator) GetFallback() Translator {
return t.fallback
}
// AddTranslator adds the supplied translator, if it already exists the override param
// will be checked and if false an error will be returned, otherwise the translator will be
// overridden; if the fallback matches the supplied translator it will be overridden as well
// NOTE: this is normally only used when translator is embedded within a library
func (t *UniversalTranslator) AddTranslator(translator locales.Translator, override bool) error {
lc := strings.ToLower(translator.Locale())
_, ok := t.translators[lc]
if ok && !override {
return &ErrExistingTranslator{locale: translator.Locale()}
}
trans := newTranslator(translator)
if t.fallback.Locale() == translator.Locale() {
// because it's optional to have a fallback, I don't impose that limitation
// don't know why you wouldn't but...
if !override {
return &ErrExistingTranslator{locale: translator.Locale()}
}
t.fallback = trans
}
t.translators[lc] = trans
return nil
}
// VerifyTranslations runs through all locales and identifies any issues
// eg. missing plural rules for a locale
func (t *UniversalTranslator) VerifyTranslations() (err error) {
for _, trans := range t.translators {
err = trans.VerifyTranslations()
if err != nil {
return
}
}
return
}