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 15 package pathtools 16 17 import ( 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. 25 func 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 33 func 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 41 func 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
