language: add marshaling
Change-Id: Ief87043eddd0e1fc86e1f589f55732cfa844bdfd
Reviewed-on: https://go-review.googlesource.com/80255
Run-TryBot: Marcel van Lohuizen <mpvl@golang.org>
Reviewed-by: Nigel Tao <nigeltao@golang.org>
diff --git a/language/language.go b/language/language.go
index ed1011f..b65e213 100644
--- a/language/language.go
+++ b/language/language.go
@@ -299,6 +299,26 @@
return string(buf[:t.genCoreBytes(buf[:])])
}
+// MarshalText implements encoding.TextMarshaler.
+func (t Tag) MarshalText() (text []byte, err error) {
+ if t.str != "" {
+ text = append(text, t.str...)
+ } else if t.script == 0 && t.region == 0 {
+ text = append(text, t.lang.String()...)
+ } else {
+ buf := [maxCoreSize]byte{}
+ text = buf[:t.genCoreBytes(buf[:])]
+ }
+ return text, nil
+}
+
+// UnmarshalText implements encoding.TextUnmarshaler.
+func (t *Tag) UnmarshalText(text []byte) error {
+ tag, err := Raw.Parse(string(text))
+ *t = tag
+ return err
+}
+
// Base returns the base language of the language tag. If the base language is
// unspecified, an attempt will be made to infer it from the context.
// It uses a variant of CLDR's Add Likely Subtags algorithm. This is subject to change.
diff --git a/language/language_test.go b/language/language_test.go
index f7c2d88..684ac2e 100644
--- a/language/language_test.go
+++ b/language/language_test.go
@@ -106,6 +106,39 @@
}
}
+func TestMarshal(t *testing.T) {
+ testCases := []string{
+ // TODO: these values will change with each CLDR update. This issue
+ // will be solved if we decide to fix the indexes.
+ "und",
+ "ca-ES-valencia",
+ "ca-ES-valencia-u-va-posix",
+ "ca-ES-valencia-u-co-phonebk",
+ "ca-ES-valencia-u-co-phonebk-va-posix",
+ "x-klingon",
+ "en-US",
+ "en-US-u-va-posix",
+ "en",
+ "en-u-co-phonebk",
+ "en-001",
+ "sh",
+ }
+ for _, tc := range testCases {
+ var tag Tag
+ err := tag.UnmarshalText([]byte(tc))
+ if err != nil {
+ t.Errorf("UnmarshalText(%q): unexpected error: %v", tc, err)
+ }
+ b, err := tag.MarshalText()
+ if err != nil {
+ t.Errorf("MarshalText(%q): unexpected error: %v", tc, err)
+ }
+ if got := string(b); got != tc {
+ t.Errorf("%s: got %q; want %q", tc, got, tc)
+ }
+ }
+}
+
func TestBase(t *testing.T) {
tests := []struct {
loc, lang string
