1// Copyright 2014 Google Inc. All rights reserved. 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 15package pathtools 16 17import ( 18 "path/filepath" 19 "strings" 20) 21 22// PrefixPaths returns a list of paths consisting of prefix joined with each 23// element of paths. The resulting paths are "clean" in the filepath.Clean 24// sense. 25func PrefixPaths(paths []string, prefix string) []string { 26 result := make([]string, len(paths)) 27 for i, path := range paths { 28 result[i] = filepath.Join(prefix, path) 29 } 30 return result 31} 32 33func ReplaceExtensions(paths []string, extension string) []string { 34 result := make([]string, len(paths)) 35 for i, path := range paths { 36 result[i] = ReplaceExtension(path, extension) 37 } 38 return result 39} 40 41func ReplaceExtension(path string, extension string) string { 42 dot := strings.LastIndex(path, ".") 43 if dot == -1 { 44 return path 45 } 46 return path[:dot+1] + extension 47} 48