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// Copyright 2019 The Bazel Authors. All rights reserved.
//
// 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.
package main
import (
"bufio"
"fmt"
"log"
"os"
"regexp"
"strings"
)
func main() {
log.SetFlags(0)
log.SetPrefix("sanitize_patch_dates: ")
if len(os.Args) == 1 {
log.Fatalf("usage: sanitize_patch_dates *.patch")
}
for _, arg := range os.Args[1:] {
if err := sanitize(arg); err != nil {
log.Fatal(err)
}
}
}
var dateRegexp = regexp.MustCompile("20..-..-.. .*")
func sanitize(filename string) (err error) {
r, err := os.Open(filename)
if err != nil {
return err
}
defer r.Close()
tempFilename := filename + "~"
w, err := os.Create(tempFilename)
if err != nil {
return err
}
defer func() {
if w == nil {
return
}
if cerr := w.Close(); err == nil && cerr != nil {
err = cerr
}
}()
s := bufio.NewScanner(r)
for s.Scan() {
line := s.Text()
if strings.HasPrefix(line, "+++") || strings.HasPrefix(line, "---") {
line = dateRegexp.ReplaceAllLiteralString(line, "2000-01-01 00:00:00.000000000 -0000")
}
if _, err := fmt.Fprintln(w, line); err != nil {
return err
}
}
if err := s.Err(); err != nil {
return err
}
if err := w.Close(); err != nil {
return err
}
w = nil
if err := os.Rename(tempFilename, filename); err != nil {
return err
}
return nil
}
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