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messages.go
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/
messages.go
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package z18n
import (
"fmt"
"io/fs"
"golang.org/x/text/language"
"zgo.at/errors"
"zgo.at/z18n/msgfile"
)
// ReadMessagesDir reads all message files from fsys matching the glob pattern.
func (b *Bundle) ReadMessagesDir(fsys fs.FS, glob string) error {
ls, err := fs.Glob(fsys, glob)
if err != nil {
return errors.Wrap(err, "Bundle.ReadMessagesDir")
}
for _, f := range ls {
err := b.ReadMessages(fsys, f)
if err != nil {
var tErr tplErr
if !errors.As(err, &tErr) {
return errors.Wrapf(err, "Bundle.ReadMessagesDir: %q", f)
}
}
}
return nil
}
type tplErr string
func (t tplErr) Error() string {
return fmt.Sprintf("z18n.ReadMessages: can't read messages from a template file (%q)", string(t))
}
// ReadMessages reads a single messages files.
func (b *Bundle) ReadMessages(fsys fs.FS, path string) error {
file, err := msgfile.ReadFile(fsys, path)
if err != nil {
return errors.Wrap(err, "Bundle.ReadMessages: decode")
}
// Template file is not intended for translations.
if file.Template {
return tplErr(path)
}
lang, err := language.Parse(file.Language)
if err != nil {
return errors.Wrapf(err, "Bundle.ReadMessages: parse language %q", file.Language)
}
for k, v := range file.Strings {
b.AddMessages(lang, map[string]Msg{
k: Msg{
ID: k,
Default: v.Default,
Zero: v.Zero,
One: v.One,
Two: v.Two,
Few: v.Few,
Many: v.Many,
},
})
}
return nil
}