Import of https://github.com/ciena/voltctl at commit 40d61fbf3f910ed4017cf67c9c79e8e1f82a33a5
Change-Id: I8464c59e60d76cb8612891db3303878975b5416c
diff --git a/vendor/golang.org/x/sys/windows/env_windows.go b/vendor/golang.org/x/sys/windows/env_windows.go
new file mode 100644
index 0000000..f482a9f
--- /dev/null
+++ b/vendor/golang.org/x/sys/windows/env_windows.go
@@ -0,0 +1,61 @@
+// Copyright 2010 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.
+
+// Windows environment variables.
+
+package windows
+
+import (
+ "syscall"
+ "unicode/utf16"
+ "unsafe"
+)
+
+func Getenv(key string) (value string, found bool) {
+ return syscall.Getenv(key)
+}
+
+func Setenv(key, value string) error {
+ return syscall.Setenv(key, value)
+}
+
+func Clearenv() {
+ syscall.Clearenv()
+}
+
+func Environ() []string {
+ return syscall.Environ()
+}
+
+// Returns a default environment associated with the token, rather than the current
+// process. If inheritExisting is true, then this environment also inherits the
+// environment of the current process.
+func (token Token) Environ(inheritExisting bool) (env []string, err error) {
+ var block *uint16
+ err = CreateEnvironmentBlock(&block, token, inheritExisting)
+ if err != nil {
+ return nil, err
+ }
+ defer DestroyEnvironmentBlock(block)
+ blockp := uintptr(unsafe.Pointer(block))
+ for {
+ entry := (*[(1 << 30) - 1]uint16)(unsafe.Pointer(blockp))[:]
+ for i, v := range entry {
+ if v == 0 {
+ entry = entry[:i]
+ break
+ }
+ }
+ if len(entry) == 0 {
+ break
+ }
+ env = append(env, string(utf16.Decode(entry)))
+ blockp += 2 * (uintptr(len(entry)) + 1)
+ }
+ return env, nil
+}
+
+func Unsetenv(key string) error {
+ return syscall.Unsetenv(key)
+}