XL: Cleanup and add more comments. (#1807)

xl-v1-list-objects.go

@@ -1,17 +1,34 @@
+/*
+ * Minio Cloud Storage, (C) 2016 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 "strings"
 
-func (xl xlObjects) listObjectsXL(bucket, prefix, marker, delimiter string, maxKeys int) (ListObjectsInfo, error) {
+// listObjects - wrapper function implemented over file tree walk.
+func (xl xlObjects) listObjects(bucket, prefix, marker, delimiter string, maxKeys int) (ListObjectsInfo, error) {
 	// Default is recursive, if delimiter is set then list non recursive.
 	recursive := true
 	if delimiter == slashSeparator {
 		recursive = false
 	}
 
-	walker := xl.lookupTreeWalkXL(listParams{bucket, recursive, marker, prefix})
+	walker := xl.lookupTreeWalk(listParams{bucket, recursive, marker, prefix})
 	if walker == nil {
-		walker = xl.startTreeWalkXL(bucket, prefix, marker, recursive, xl.isObject)
+		walker = xl.startTreeWalk(bucket, prefix, marker, recursive, xl.isObject)
 	}
 	var objInfos []ObjectInfo
 	var eof bool
@@ -57,7 +74,7 @@ func (xl xlObjects) listObjectsXL(bucket, prefix, marker, delimiter string, maxK
 	}
 	params := listParams{bucket, recursive, nextMarker, prefix}
 	if !eof {
-		xl.saveTreeWalkXL(params, walker)
+		xl.saveTreeWalk(params, walker)
 	}
 
 	result := ListObjectsInfo{IsTruncated: !eof}
@@ -128,7 +145,7 @@ func (xl xlObjects) ListObjects(bucket, prefix, marker, delimiter string, maxKey
 	}
 
 	// Initiate a list operation, if successful filter and return quickly.
-	listObjInfo, err := xl.listObjectsXL(bucket, prefix, marker, delimiter, maxKeys)
+	listObjInfo, err := xl.listObjects(bucket, prefix, marker, delimiter, maxKeys)
 	if err == nil {
 		// We got the entries successfully return.
 		return listObjInfo, nil