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98 lines
2.3 KiB
98 lines
2.3 KiB
package carbon
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import (
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"encoding/json"
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"fmt"
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"os"
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"strconv"
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"strings"
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"github.com/gobuffalo/packr"
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)
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var (
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// defaultDir default directory
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defaultDir = "lang"
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// defaultLocale default locale
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defaultLocale = "en"
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// invalidLocaleError returns an invalid locale error.
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invalidLocaleError = func(locale string) error {
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return fmt.Errorf("invalid locale file %q, please make sure the json file exists and is valid", locale)
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}
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)
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// Language define a Language struct.
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// 定义 Language 结构体
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type Language struct {
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dir string
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locale string
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resources map[string]string
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Error error
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}
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// NewLanguage return a new Language instance.
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// 初始化 Language 结构体
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func NewLanguage() *Language {
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return &Language{
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dir: defaultDir,
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locale: defaultLocale,
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resources: make(map[string]string),
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}
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}
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// SetLocale sets language locale.
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// 设置区域
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func (lang *Language) SetLocale(locale string) {
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if len(lang.resources) != 0 {
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return
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}
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lang.locale = locale
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box := packr.NewBox(lang.dir)
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localeName := locale + ".json"
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bytes, err := box.Find(localeName)
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localePath := lang.dir + string(os.PathSeparator) + localeName
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if err != nil {
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lang.Error = invalidLocaleError(localePath)
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return
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}
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if json.Unmarshal(bytes, &lang.resources) != nil {
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lang.Error = invalidLocaleError(localePath)
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}
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}
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// SetResources sets language resources.
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// 设置资源
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func (lang *Language) SetResources(resources map[string]string) {
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if len(lang.resources) == 0 {
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lang.resources = resources
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return
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}
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for k, v := range resources {
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if _, ok := lang.resources[k]; ok {
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lang.resources[k] = v
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}
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}
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}
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// translate returns a translated string.
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// 翻译转换
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func (lang *Language) translate(unit string, value int64) string {
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if len(lang.resources) == 0 {
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lang.SetLocale(defaultLocale)
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}
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slice := strings.Split(lang.resources[unit], "|")
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number := getAbsValue(value)
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if len(slice) == 1 {
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return strings.Replace(slice[0], "%d", strconv.FormatInt(value, 10), 1)
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}
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if int64(len(slice)) <= number {
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return strings.Replace(slice[len(slice)-1], "%d", strconv.FormatInt(value, 10), 1)
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}
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if !strings.Contains(slice[number-1], "%d") && value < 0 {
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return "-" + slice[number-1]
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}
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return strings.Replace(slice[number-1], "%d", strconv.FormatInt(value, 10), 1)
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}
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