k3s/vendor/github.com/chai2010/gettext-go/gettext/tr.go

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2019-01-12 04:58:27 +00:00
// Copyright 2013 ChaiShushan <chaishushan{AT}gmail.com>. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package gettext
import (
"github.com/chai2010/gettext-go/gettext/mo"
"github.com/chai2010/gettext-go/gettext/plural"
"github.com/chai2010/gettext-go/gettext/po"
)
var nilTranslator = &translator{
MessageMap: make(map[string]mo.Message),
PluralFormula: plural.Formula("??"),
}
type translator struct {
MessageMap map[string]mo.Message
PluralFormula func(n int) int
}
func newMoTranslator(name string, data []byte) (*translator, error) {
var (
f *mo.File
err error
)
if len(data) != 0 {
f, err = mo.LoadData(data)
} else {
f, err = mo.Load(name)
}
if err != nil {
return nil, err
}
var tr = &translator{
MessageMap: make(map[string]mo.Message),
}
for _, v := range f.Messages {
tr.MessageMap[tr.makeMapKey(v.MsgContext, v.MsgId)] = v
}
if lang := f.MimeHeader.Language; lang != "" {
tr.PluralFormula = plural.Formula(lang)
} else {
tr.PluralFormula = plural.Formula("??")
}
return tr, nil
}
func newPoTranslator(name string, data []byte) (*translator, error) {
var (
f *po.File
err error
)
if len(data) != 0 {
f, err = po.LoadData(data)
} else {
f, err = po.Load(name)
}
if err != nil {
return nil, err
}
var tr = &translator{
MessageMap: make(map[string]mo.Message),
}
for _, v := range f.Messages {
tr.MessageMap[tr.makeMapKey(v.MsgContext, v.MsgId)] = mo.Message{
MsgContext: v.MsgContext,
MsgId: v.MsgId,
MsgIdPlural: v.MsgIdPlural,
MsgStr: v.MsgStr,
MsgStrPlural: v.MsgStrPlural,
}
}
if lang := f.MimeHeader.Language; lang != "" {
tr.PluralFormula = plural.Formula(lang)
} else {
tr.PluralFormula = plural.Formula("??")
}
return tr, nil
}
func (p *translator) PGettext(msgctxt, msgid string) string {
return p.PNGettext(msgctxt, msgid, "", 0)
}
func (p *translator) PNGettext(msgctxt, msgid, msgidPlural string, n int) string {
n = p.PluralFormula(n)
if ss := p.findMsgStrPlural(msgctxt, msgid, msgidPlural); len(ss) != 0 {
if n >= len(ss) {
n = len(ss) - 1
}
if ss[n] != "" {
return ss[n]
}
}
if msgidPlural != "" && n > 0 {
return msgidPlural
}
return msgid
}
func (p *translator) findMsgStrPlural(msgctxt, msgid, msgidPlural string) []string {
key := p.makeMapKey(msgctxt, msgid)
if v, ok := p.MessageMap[key]; ok {
if len(v.MsgIdPlural) != 0 {
if len(v.MsgStrPlural) != 0 {
return v.MsgStrPlural
} else {
return nil
}
} else {
if len(v.MsgStr) != 0 {
return []string{v.MsgStr}
} else {
return nil
}
}
}
return nil
}
func (p *translator) makeMapKey(msgctxt, msgid string) string {
if msgctxt != "" {
return msgctxt + mo.EotSeparator + msgid
}
return msgid
}