libgo/go/runtime/env_posix.go

   1 // Copyright 2012 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 // +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris windows
   6
   7 package runtime
   8
   9 func gogetenv(key string) string {
  10         env := environ()
  11         if env == nil {
  12                 throw("getenv before env init")
  13         }
  14         for _, s := range environ() {
  15                 if len(s) > len(key) && s[len(key)] == '=' && s[:len(key)] == key {
  16                         return s[len(key)+1:]
  17                 }
  18         }
  19         return ""
  20 }