Merge pull request #10 from go-ego/i-pr

add paragraph pinyin initial support

phrase/paragraph.go

@@ -38,6 +38,16 @@ func Pinyin(p string, segs ...gse.Segmenter) []string {
 	return strings.Split(Paragraph(p, segs...), " ")
 }
 
+// Initial return pinyin initial
+func Initial(p string, segs ...gse.Segmenter) (s string) {
+	a := Pinyin(p, segs...)
+	for _, v := range a {
+		s += string([]rune(v)[0])
+	}
+
+	return
+}
+
 // Paragraph convert a Chinese string paragraph to pinyin,
 // including letters, numbers, symbols
 func Paragraph(p string, segs ...gse.Segmenter) (s string) {

phrase/paragraph_test.go

@@ -45,4 +45,7 @@ func TestPinyin(t *testing.T) {
 	AddDict("都会区", "dū huì qū")
 	p := Pinyin("西雅图都会区, 西雅图太空针")
 	tt.Equal(t, "[xi ya tu du hui qu, xi ya tu tai kong zhen]", p)
+
+	i := Initial("都会区")
+	tt.Equal(t, "dhq", i)
 }