1 // Copyright 2014 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 package btree 16 17 import ( 18 "fmt" 19 "io" 20 "strings" 21 ) 22 23 func (t *BTree) print(w io.Writer) { 24 t.root.print(w, 0) 25 } 26 27 func (n *node) print(w io.Writer, level int) { 28 indent := strings.Repeat(" ", level) 29 if n == nil { 30 fmt.Fprintf(w, "%s<nil>\n", indent) 31 return 32 } 33 fmt.Fprintf(w, "%s%v\n", indent, n.items) 34 for _, c := range n.children { 35 c.print(w, level+1) 36 } 37 } 38