fix:fix proto add underscore problem (#2101)

* fix:fix proto add underscore problem

cmd/kratos/internal/proto/add/add.go

@@ -7,6 +7,8 @@ import (
 
 	"github.com/spf13/cobra"
 	"golang.org/x/mod/modfile"
+	"golang.org/x/text/cases"
+	"golang.org/x/text/language"
 )
 
 // CmdAdd represents the add command.
@@ -63,7 +65,11 @@ func javaPackage(name string) string {
 }
 
 func serviceName(name string) string {
-	return export(strings.Split(name, ".")[0])
+	return toUpperCamelCase(strings.Split(name, ".")[0])
 }
 
-func export(s string) string { return strings.ToUpper(s[:1]) + s[1:] }
+func toUpperCamelCase(s string) string {
+	s = strings.ReplaceAll(s, "_", " ")
+	s = cases.Title(language.Und, cases.NoLower).String(s)
+	return strings.ReplaceAll(s, " ", "")
+}

cmd/kratos/internal/proto/add/add_test.go

@@ -0,0 +1,38 @@
+package add
+
+import "testing"
+
+func TestUnderscoreToUpperCamelCase(t *testing.T) {
+	tests := []struct {
+		name string
+		want string
+	}{
+		{
+			name: "hello_world",
+			want: "HelloWorld",
+		},
+		{
+			name: "v2_kratos_dev",
+			want: "V2KratosDev",
+		},
+		{
+			name: "www_Google_com",
+			want: "WwwGoogleCom",
+		},
+		{
+			name: "wwwBaidu_com",
+			want: "WwwBaiduCom",
+		},
+		{
+			name: "HelloWorld",
+			want: "HelloWorld",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := toUpperCamelCase(tt.name); got != tt.want {
+				t.Errorf("toUpperCamelCase() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}