Support decoding slices
diff --git a/mapstructure.go b/mapstructure.go
index 536e8c2..1233c73 100644
--- a/mapstructure.go
+++ b/mapstructure.go
@@ -51,6 +51,8 @@
return decodeStruct(name, data, val)
case reflect.Map:
return decodeMap(name, data, val)
+ case reflect.Slice:
+ return decodeSlice(name, data, val)
}
// If we reached this point then we weren't able to decode it
@@ -96,6 +98,12 @@
return nil
}
+func decodeSlice(name string, data interface{}, val reflect.Value) error {
+ dataVal := reflect.Indirect(reflect.ValueOf(data))
+ val.Set(dataVal)
+ return nil
+}
+
func decodeStruct(name string, data interface{}, val reflect.Value) error {
dataVal := reflect.Indirect(reflect.ValueOf(data))
dataValKind := dataVal.Kind()
diff --git a/mapstructure_test.go b/mapstructure_test.go
index d87d151..7070dd4 100644
--- a/mapstructure_test.go
+++ b/mapstructure_test.go
@@ -19,6 +19,11 @@
Vbar Basic
}
+type Slice struct {
+ Vfoo string
+ Vbar []string
+}
+
func TestBasicTypes(t *testing.T) {
t.Parallel()
@@ -172,6 +177,28 @@
}
}
+func TestSlice(t *testing.T) {
+ t.Parallel()
+
+ inputStringSlice := map[string]interface{}{
+ "vfoo": "foo",
+ "vbar": []string{"foo", "bar", "baz"},
+ }
+
+ inputStringSlicePointer := map[string]interface{}{
+ "vfoo": "foo",
+ "vbar": &[]string{"foo", "bar", "baz"},
+ }
+
+ outputStringSlice := &Slice{
+ "foo",
+ []string{"foo", "bar", "baz"},
+ }
+
+ testSliceInput(t, inputStringSlice, outputStringSlice)
+ testSliceInput(t, inputStringSlicePointer, outputStringSlice)
+}
+
func TestInvalidType(t *testing.T) {
t.Parallel()
@@ -219,3 +246,33 @@
t.Errorf("got unexpected error: %s", err)
}
}
+
+func testSliceInput(t *testing.T, input map[string]interface{}, expected *Slice) {
+ var result Slice
+ err := Decode(input, &result)
+ if err != nil {
+ t.Errorf("got error: %s", err)
+ t.FailNow()
+ }
+
+ if result.Vfoo != expected.Vfoo {
+ t.Errorf("Vfoo expected '%s', got '%s'", expected.Vfoo, result.Vfoo)
+ }
+
+ if result.Vbar == nil {
+ t.Errorf("Vbar a slice, got '%#v'", result.Vbar)
+ t.FailNow()
+ }
+
+ if len(result.Vbar) != len(expected.Vbar) {
+ t.Errorf("Vbar length should be %d, got %d", len(expected.Vbar), len(result.Vbar))
+ }
+
+ for i, v := range result.Vbar {
+ if v != expected.Vbar[i] {
+ t.Errorf(
+ "Vbar[%d] should be '%#v', got '%#v'",
+ i, expected.Vbar[i], v)
+ }
+ }
+}
