1 files changed, 0 insertions, 103 deletions
diff --git a/src/pkg/os/env.go b/src/pkg/os/env.go
deleted file mode 100644
index db7fc72b8..000000000
--- a/src/pkg/os/env.go
+++ /dev/null
@@ -1,103 +0,0 @@
-// 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.
-
-// General environment variables.
-
-package os
-
-import "syscall"
-
-// Expand replaces ${var} or $var in the string based on the mapping function.
-// For example, os.ExpandEnv(s) is equivalent to os.Expand(s, os.Getenv).
-func Expand(s string, mapping func(string) string) string {
-	buf := make([]byte, 0, 2*len(s))
-	// ${} is all ASCII, so bytes are fine for this operation.
-	i := 0
-	for j := 0; j < len(s); j++ {
-		if s[j] == '$' && j+1 < len(s) {
-			buf = append(buf, s[i:j]...)
-			name, w := getShellName(s[j+1:])
-			buf = append(buf, mapping(name)...)
-			j += w
-			i = j + 1
-		}
-	}
-	return string(buf) + s[i:]
-}
-
-// ExpandEnv replaces ${var} or $var in the string according to the values
-// of the current environment variables.  References to undefined
-// variables are replaced by the empty string.
-func ExpandEnv(s string) string {
-	return Expand(s, Getenv)
-}
-
-// isSpellSpecialVar reports whether the character identifies a special
-// shell variable such as $*.
-func isShellSpecialVar(c uint8) bool {
-	switch c {
-	case '*', '#', '$', '@', '!', '?', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
-		return true
-	}
-	return false
-}
-
-// isAlphaNum reports whether the byte is an ASCII letter, number, or underscore
-func isAlphaNum(c uint8) bool {
-	return c == '_' || '0' <= c && c <= '9' || 'a' <= c && c <= 'z' || 'A' <= c && c <= 'Z'
-}
-
-// getName returns the name that begins the string and the number of bytes
-// consumed to extract it.  If the name is enclosed in {}, it's part of a ${}
-// expansion and two more bytes are needed than the length of the name.
-func getShellName(s string) (string, int) {
-	switch {
-	case s[0] == '{':
-		if len(s) > 2 && isShellSpecialVar(s[1]) && s[2] == '}' {
-			return s[1:2], 3
-		}
-		// Scan to closing brace
-		for i := 1; i < len(s); i++ {
-			if s[i] == '}' {
-				return s[1:i], i + 1
-			}
-		}
-		return "", 1 // Bad syntax; just eat the brace.
-	case isShellSpecialVar(s[0]):
-		return s[0:1], 1
-	}
-	// Scan alphanumerics.
-	var i int
-	for i = 0; i < len(s) && isAlphaNum(s[i]); i++ {
-	}
-	return s[:i], i
-}
-
-// Getenv retrieves the value of the environment variable named by the key.
-// It returns the value, which will be empty if the variable is not present.
-func Getenv(key string) string {
-	v, _ := syscall.Getenv(key)
-	return v
-}
-
-// Setenv sets the value of the environment variable named by the key.
-// It returns an error, if any.
-func Setenv(key, value string) error {
-	err := syscall.Setenv(key, value)
-	if err != nil {
-		return NewSyscallError("setenv", err)
-	}
-	return nil
-}
-
-// Clearenv deletes all environment variables.
-func Clearenv() {
-	syscall.Clearenv()
-}
-
-// Environ returns a copy of strings representing the environment,
-// in the form "key=value".
-func Environ() []string {
-	return syscall.Environ()
-}