| // Copyright 2017 The Go 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 base |
| |
| import ( |
| "fmt" |
| "path/filepath" |
| ) |
| |
| // AppendPWD returns the result of appending PWD=dir to the environment base. |
| // |
| // The resulting environment makes os.Getwd more efficient for a subprocess |
| // running in dir. |
| func AppendPWD(base []string, dir string) []string { |
| // POSIX requires PWD to be absolute. |
| // Internally we only use absolute paths, so dir should already be absolute. |
| if !filepath.IsAbs(dir) { |
| panic(fmt.Sprintf("AppendPWD with relative path %q", dir)) |
| } |
| return append(base, "PWD="+dir) |
| } |
