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 deptools 16 17 import ( 18 "fmt" 19 "os" 20 "strings" 21 ) 22 23 var ( 24 pathEscaper = strings.NewReplacer( 25 `\`, `\\`, 26 ` `, `\ `, 27 `#`, `\#`, 28 `*`, `\*`, 29 `[`, `\[`, 30 `|`, `\|`) 31 ) 32 33 // WriteDepFile creates a new gcc-style depfile and populates it with content 34 // indicating that target depends on deps. 35 func WriteDepFile(filename, target string, deps []string) error { 36 f, err := os.Create(filename) 37 if err != nil { 38 return err 39 } 40 defer f.Close() 41 42 var escapedDeps []string 43 44 for _, dep := range deps { 45 escapedDeps = append(escapedDeps, pathEscaper.Replace(dep)) 46 } 47 48 _, err = fmt.Fprintf(f, "%s: \\\n %s\n", target, 49 strings.Join(escapedDeps, " \\\n ")) 50 if err != nil { 51 return err 52 } 53 54 return nil 55 } 56
