Handle json and regular printing for all commands in their own respective files for readability

diff-json.go

@@ -0,0 +1,51 @@
+/*
+ * Minio Client (C) 2015 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import "encoding/json"
+
+// DiffJSONMessage json container for diff messages
+type DiffJSONMessage struct {
+	FirstURL  string `json:"first"`
+	SecondURL string `json:"second"`
+	Diff      string `json:"diff"`
+}
+
+func (s diffV1) String() string {
+	if !globalJSONFlag {
+		var message string
+		if s.diffType == "Only-in" {
+			message = "‘" + s.firstURL + "’ Only in ‘" + s.secondURL + "’\n"
+		}
+		if s.diffType == "Type" {
+			message = s.firstURL + " and " + s.secondURL + " differs in type.\n"
+		}
+		if s.diffType == "Size" {
+			message = s.firstURL + " and " + s.secondURL + " differs in size.\n"
+		}
+		return message
+	}
+	diffMessage := DiffJSONMessage{}
+	diffMessage.FirstURL = s.firstURL
+	diffMessage.SecondURL = s.secondURL
+	diffMessage.Diff = s.diffType
+	diffJSONBytes, err := json.Marshal(diffMessage)
+	if err != nil {
+		panic(err)
+	}
+	return string(diffJSONBytes) + "\n"
+}