| // Copyright (C) 2015 The Android Open Source Project |
| // |
| // 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. |
| |
| // copyright is a tool to maintain copyright headers. |
| package main |
| |
| import ( |
| "flag" |
| "fmt" |
| "io/ioutil" |
| "os" |
| "path/filepath" |
| |
| "android.googlesource.com/platform/tools/gpu/tools/copyright" |
| ) |
| |
| var ( |
| usage_header = `copyright finds and fixes bad copyright headers |
| |
| usage: copyright [options] |
| options:` |
| noactions = flag.Bool("n", false, |
| "don't perform any actions, just print information") |
| noold = flag.Bool("o", false, |
| "don't update the copyright if it's just old") |
| usage_footer = ` |
| The search is rooted at the current working directory. |
| It will attempt to fix incorrect copyright headers unless you specify the |
| -n flag, and will only replace copyright headers patterns that it knows about. |
| For unknown comments it will just prepend the correct copyright header. |
| It will not touch file extensions that it does not know the header type for. |
| ` |
| ) |
| |
| func update(path string, reason string, header string, body []byte) error { |
| fmt.Printf("Copyright on %s was %s\n", path, reason) |
| if *noactions { |
| return nil |
| } |
| file, err := os.Create(path) |
| if err != nil { |
| return err |
| } |
| defer file.Close() |
| _, err = file.WriteString(header) |
| if err != nil { |
| return err |
| } |
| _, err = file.Write(body) |
| if err != nil { |
| return err |
| } |
| return nil |
| } |
| |
| func run() error { |
| flag.Usage = func() { |
| fmt.Println(usage_header) |
| flag.PrintDefaults() |
| fmt.Print(usage_footer) |
| } |
| flag.Parse() |
| paths := flag.Args() |
| if len(paths) == 0 { |
| paths = []string{"."} |
| } |
| for _, path := range paths { |
| err := filepath.Walk(path, func(path string, info os.FileInfo, err error) error { |
| if err != nil { |
| return err |
| } |
| if info.IsDir() { |
| return nil |
| } |
| extension := filepath.Ext(path) |
| l := copyright.FindExtension(extension) |
| if l == nil { |
| return nil |
| } |
| file, err := ioutil.ReadFile(path) |
| if err != nil { |
| return err |
| } |
| if i := l.MatchCurrent(file); i > 0 { |
| return nil |
| } |
| if i := copyright.MatchExternal(file); i > 0 { |
| return nil |
| } |
| if i := copyright.MatchGenerated(file); i > 0 { |
| return nil |
| } |
| if i := l.MatchOld(file); i > 0 { |
| if !*noold { |
| return update(path, "out of date", l.Emit, file[i:]) |
| } |
| return nil |
| } |
| if i := copyright.MatchNormal(file); i > 0 { |
| return update(path, "invalid", l.Emit, file[i:]) |
| } |
| return update(path, "missing", l.Emit, file) |
| }) |
| if err != nil { |
| return err |
| } |
| } |
| return nil |
| } |
| |
| func main() { |
| if err := run(); err != nil { |
| fmt.Fprintf(os.Stderr, "copyright failed: %v\n", err) |
| os.Exit(1) |
| } |
| } |