67 lines
1.5 KiB
Go
67 lines
1.5 KiB
Go
package i18n
|
|
|
|
import (
|
|
"embed"
|
|
"encoding/json"
|
|
"fmt"
|
|
"io/fs"
|
|
"path/filepath"
|
|
"sort"
|
|
"strings"
|
|
)
|
|
|
|
//go:embed locales/*.json
|
|
var embeddedLocales embed.FS
|
|
|
|
// Loader loads locale messages from a backing store.
|
|
type Loader interface {
|
|
Load(locale string) (map[string]string, error)
|
|
AvailableLocales() ([]string, error)
|
|
}
|
|
|
|
type embedLoader struct {
|
|
fs fs.FS
|
|
}
|
|
|
|
// NewEmbedLoader returns the default loader backed by embedded locale files.
|
|
func NewEmbedLoader() Loader {
|
|
return embedLoader{fs: embeddedLocales}
|
|
}
|
|
|
|
func (l embedLoader) Load(locale string) (map[string]string, error) {
|
|
locale = NormalizeLocale(locale)
|
|
path := filepath.ToSlash(filepath.Join("locales", locale+".json"))
|
|
data, err := fs.ReadFile(l.fs, path)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("load locale %s: %w", locale, err)
|
|
}
|
|
|
|
var messages map[string]string
|
|
if err := json.Unmarshal(data, &messages); err != nil {
|
|
return nil, fmt.Errorf("parse locale %s: %w", locale, err)
|
|
}
|
|
return messages, nil
|
|
}
|
|
|
|
func (l embedLoader) AvailableLocales() ([]string, error) {
|
|
entries, err := fs.ReadDir(l.fs, "locales")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
locales := make([]string, 0, len(entries))
|
|
for _, entry := range entries {
|
|
if entry.IsDir() || !strings.HasSuffix(entry.Name(), ".json") {
|
|
continue
|
|
}
|
|
locales = append(locales, strings.TrimSuffix(entry.Name(), ".json"))
|
|
}
|
|
sort.Strings(locales)
|
|
return locales, nil
|
|
}
|
|
|
|
// AvailableLocales returns locales available from the embedded loader.
|
|
func AvailableLocales() ([]string, error) {
|
|
return NewEmbedLoader().AvailableLocales()
|
|
}
|