Merge pull request #74 from mbenson/loadReader

Load from io.Reader

load.go

@@ -52,6 +52,15 @@ func (l *Loader) LoadBytes(buf []byte) (*Properties, error) {
 	return l.loadBytes(buf, l.Encoding)
 }
 
+// LoadReader reads an io.Reader into a Properties struct.
+func (l *Loader) LoadReader(r io.Reader) (*Properties, error) {
+	if buf, err := io.ReadAll(r); err != nil {
+		return nil, err
+	} else {
+		return l.loadBytes(buf, l.Encoding)
+	}
+}
+
 // LoadAll reads the content of multiple URLs or files in the given order into
 // a Properties struct. If IgnoreMissing is true then a 404 status code or
 // missing file will not be reported as error. Encoding sets the encoding for
@@ -185,6 +194,12 @@ func LoadFile(filename string, enc Encoding) (*Properties, error) {
 	return l.LoadAll([]string{filename})
 }
 
+// LoadReader reads an io.Reader into a Properties struct.
+func LoadReader(r io.Reader, enc Encoding) (*Properties, error) {
+	l := &Loader{Encoding: enc}
+	return l.LoadReader(r)
+}
+
 // LoadFiles reads multiple files in the given order into
 // a Properties struct. If 'ignoreMissing' is true then
 // non-existent files will not be reported as error.
@@ -224,6 +239,12 @@ func MustLoadString(s string) *Properties {
 	return must(LoadString(s))
 }
 
+// MustLoadSReader reads an io.Reader into a Properties struct and
+// panics on error.
+func MustLoadReader(r io.Reader, enc Encoding) *Properties {
+	return must(LoadReader(r, enc))
+}
+
 // MustLoadFile reads a file into a Properties struct and
 // panics on error.
 func MustLoadFile(filename string, enc Encoding) *Properties {

load_test.go

@@ -166,6 +166,21 @@ func TestLoadAll(t *testing.T) {
 	assertKeyValues(t, "", p, "key", "value4", "key2", "value2")
 }
 
+func TestLoadReader(t *testing.T) {
+	tf := make(tempFiles, 0)
+	defer tf.removeAll()
+
+	filename := tf.makeFile("key=value")
+	r, err := os.Open(filename)
+	if err != nil {
+		t.Fatal(err)
+	}
+	p := MustLoadReader(r, ISO_8859_1)
+
+	assert.Equal(t, p.Len(), 1)
+	assertKeyValues(t, "", p, "key", "value")
+}
+
 type tempFiles []string
 
 func (tf *tempFiles) removeAll() {