| // Copyright 2015 The Vanadium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package modules |
| |
| import ( |
| "fmt" |
| "hash/adler32" |
| "io" |
| "io/ioutil" |
| "os" |
| |
| "v.io/x/ref/internal/logger" |
| ) |
| |
| func newLogfile(prefix, name string) (*os.File, error) { |
| nameHash := adler32.Checksum([]byte(name)) |
| f, err := ioutil.TempFile("", fmt.Sprintf("__modules__%s-%x-", prefix, nameHash)) |
| if err != nil { |
| return nil, err |
| } |
| return f, nil |
| } |
| |
| func outputFromFile(f *os.File, out io.Writer) { |
| f.Close() |
| fName := f.Name() |
| defer os.Remove(fName) |
| if out == nil { |
| return |
| } |
| var err error |
| if f, err = os.Open(fName); err != nil { |
| logger.Global().VI(1).Infof("failed to open %q: %s\n", fName, err) |
| return |
| } |
| io.Copy(out, f) |
| f.Close() |
| } |
