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langs/i18n: Revise the plural implementation
There were some issues introduced with the plural counting when we upgraded from v1 to v2 of go-i18n. This commit improves that situation given the following rules: * A single integer argument is used as plural count and passed to the i18n template as a int type with a `.Count` method. The latter is to preserve compability with v1. * Else the plural count is either fetched from the `Count`/`count` field/method/map or from the value itself. * Any data type is accepted, if it can be converted to an integer, that value is used. The above means that you can now do pass a single integer and both of the below will work: ``` {{ . }} minutes to read {{ .Count }} minutes to read ``` Fixes #8454 Closes #7822 See https://github.com/gohugoio/hugoDocs/issues/1410
This commit is contained in:
parent
243951ebe9
commit
537c905ec1
2 changed files with 164 additions and 8 deletions
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@ -17,6 +17,8 @@ import (
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"reflect"
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"strings"
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"github.com/spf13/cast"
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"github.com/gohugoio/hugo/common/hreflect"
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"github.com/gohugoio/hugo/common/loggers"
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"github.com/gohugoio/hugo/config"
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@ -69,17 +71,15 @@ func (t Translator) initFuncs(bndl *i18n.Bundle) {
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currentLangKey := strings.ToLower(strings.TrimPrefix(currentLangStr, artificialLangTagPrefix))
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localizer := i18n.NewLocalizer(bndl, currentLangStr)
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t.translateFuncs[currentLangKey] = func(translationID string, templateData interface{}) string {
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var pluralCount interface{}
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pluralCount := getPluralCount(templateData)
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if templateData != nil {
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tp := reflect.TypeOf(templateData)
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if hreflect.IsNumber(tp.Kind()) {
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pluralCount = templateData
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// This was how go-i18n worked in v1.
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templateData = map[string]interface{}{
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"Count": templateData,
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}
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if hreflect.IsInt(tp.Kind()) {
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// This was how go-i18n worked in v1,
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// and we keep it like this to avoid breaking
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// lots of sites in the wild.
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templateData = intCount(cast.ToInt(templateData))
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}
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}
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@ -109,3 +109,49 @@ func (t Translator) initFuncs(bndl *i18n.Bundle) {
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}
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}
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}
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// intCount wraps the Count method.
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type intCount int
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func (c intCount) Count() int {
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return int(c)
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}
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const countFieldName = "Count"
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func getPluralCount(o interface{}) int {
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if o == nil {
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return 0
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}
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switch v := o.(type) {
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case map[string]interface{}:
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for k, vv := range v {
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if strings.EqualFold(k, countFieldName) {
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return cast.ToInt(vv)
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}
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}
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default:
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vv := reflect.Indirect(reflect.ValueOf(v))
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if vv.Kind() == reflect.Interface && !vv.IsNil() {
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vv = vv.Elem()
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}
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tp := vv.Type()
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if tp.Kind() == reflect.Struct {
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f := vv.FieldByName(countFieldName)
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if f.IsValid() {
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return cast.ToInt(f.Interface())
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}
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m := vv.MethodByName(countFieldName)
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if m.IsValid() && m.Type().NumIn() == 0 && m.Type().NumOut() == 1 {
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c := m.Call(nil)
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return cast.ToInt(c[0].Interface())
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}
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}
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return cast.ToInt(o)
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}
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return 0
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}
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@ -141,6 +141,20 @@ other = "{{ .Count }} minutes to read"
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expected: "One minute to read",
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expectedFlag: "One minute to read",
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},
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{
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name: "readingTime-many-dot",
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data: map[string][]byte{
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"en.toml": []byte(`[readingTime]
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one = "One minute to read"
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other = "{{ . }} minutes to read"
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`),
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},
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args: 21,
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lang: "en",
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id: "readingTime",
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expected: "21 minutes to read",
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expectedFlag: "21 minutes to read",
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},
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{
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name: "readingTime-many",
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data: map[string][]byte{
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@ -155,6 +169,62 @@ other = "{{ .Count }} minutes to read"
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expected: "21 minutes to read",
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expectedFlag: "21 minutes to read",
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},
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// Issue #8454
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{
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name: "readingTime-map-one",
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data: map[string][]byte{
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"en.toml": []byte(`[readingTime]
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one = "One minute to read"
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other = "{{ .Count }} minutes to read"
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`),
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},
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args: map[string]interface{}{"Count": 1},
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lang: "en",
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id: "readingTime",
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expected: "One minute to read",
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expectedFlag: "One minute to read",
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},
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{
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name: "readingTime-string-one",
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data: map[string][]byte{
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"en.toml": []byte(`[readingTime]
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one = "One minute to read"
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other = "{{ . }} minutes to read"
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`),
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},
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args: "1",
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lang: "en",
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id: "readingTime",
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expected: "One minute to read",
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expectedFlag: "One minute to read",
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},
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{
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name: "readingTime-map-many",
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data: map[string][]byte{
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"en.toml": []byte(`[readingTime]
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one = "One minute to read"
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other = "{{ .Count }} minutes to read"
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`),
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},
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args: map[string]interface{}{"Count": 21},
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lang: "en",
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id: "readingTime",
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expected: "21 minutes to read",
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expectedFlag: "21 minutes to read",
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},
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{
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name: "argument-float",
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data: map[string][]byte{
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"en.toml": []byte(`[float]
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other = "Number is {{ . }}"
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`),
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},
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args: 22.5,
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lang: "en",
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id: "float",
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expected: "Number is 22.5",
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expectedFlag: "Number is 22.5",
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},
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// Same id and translation in current language
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// https://github.com/gohugoio/hugo/issues/2607
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{
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@ -246,6 +316,46 @@ func doTestI18nTranslate(t testing.TB, test i18nTest, cfg config.Provider) strin
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return f(test.id, test.args)
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}
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type countField struct {
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Count int
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}
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type noCountField struct {
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Counts int
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}
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type countMethod struct {
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}
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func (c countMethod) Count() int {
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return 32
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}
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func TestGetPluralCount(t *testing.T) {
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c := qt.New(t)
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c.Assert(getPluralCount(map[string]interface{}{"Count": 32}), qt.Equals, 32)
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c.Assert(getPluralCount(map[string]interface{}{"Count": 1}), qt.Equals, 1)
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c.Assert(getPluralCount(map[string]interface{}{"Count": "32"}), qt.Equals, 32)
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c.Assert(getPluralCount(map[string]interface{}{"count": 32}), qt.Equals, 32)
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c.Assert(getPluralCount(map[string]interface{}{"Count": "32"}), qt.Equals, 32)
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c.Assert(getPluralCount(map[string]interface{}{"Counts": 32}), qt.Equals, 0)
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c.Assert(getPluralCount("foo"), qt.Equals, 0)
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c.Assert(getPluralCount(countField{Count: 22}), qt.Equals, 22)
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c.Assert(getPluralCount(&countField{Count: 22}), qt.Equals, 22)
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c.Assert(getPluralCount(noCountField{Counts: 23}), qt.Equals, 0)
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c.Assert(getPluralCount(countMethod{}), qt.Equals, 32)
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c.Assert(getPluralCount(&countMethod{}), qt.Equals, 32)
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c.Assert(getPluralCount(1234), qt.Equals, 1234)
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c.Assert(getPluralCount(1234.4), qt.Equals, 1234)
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c.Assert(getPluralCount(1234.6), qt.Equals, 1234)
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c.Assert(getPluralCount(0.6), qt.Equals, 0)
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c.Assert(getPluralCount(1.0), qt.Equals, 1)
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c.Assert(getPluralCount("1234"), qt.Equals, 1234)
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c.Assert(getPluralCount(nil), qt.Equals, 0)
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}
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func prepareTranslationProvider(t testing.TB, test i18nTest, cfg config.Provider) *TranslationProvider {
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c := qt.New(t)
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fs := hugofs.NewMem(cfg)
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