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author | Tianon Gravi <admwiggin@gmail.com> | 2015-01-15 11:54:00 -0700 |
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committer | Tianon Gravi <admwiggin@gmail.com> | 2015-01-15 11:54:00 -0700 |
commit | f154da9e12608589e8d5f0508f908a0c3e88a1bb (patch) | |
tree | f8255d51e10c6f1e0ed69702200b966c9556a431 /src/pkg/os/exec/lp_unix.go | |
parent | 8d8329ed5dfb9622c82a9fbec6fd99a580f9c9f6 (diff) | |
download | golang-upstream/1.4.tar.gz |
Imported Upstream version 1.4upstream/1.4
Diffstat (limited to 'src/pkg/os/exec/lp_unix.go')
-rw-r--r-- | src/pkg/os/exec/lp_unix.go | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/src/pkg/os/exec/lp_unix.go b/src/pkg/os/exec/lp_unix.go deleted file mode 100644 index 3f895d5b3..000000000 --- a/src/pkg/os/exec/lp_unix.go +++ /dev/null @@ -1,60 +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. - -// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris - -package exec - -import ( - "errors" - "os" - "strings" -) - -// ErrNotFound is the error resulting if a path search failed to find an executable file. -var ErrNotFound = errors.New("executable file not found in $PATH") - -func findExecutable(file string) error { - d, err := os.Stat(file) - if err != nil { - return err - } - if m := d.Mode(); !m.IsDir() && m&0111 != 0 { - return nil - } - return os.ErrPermission -} - -// LookPath searches for an executable binary named file -// in the directories named by the PATH environment variable. -// If file contains a slash, it is tried directly and the PATH is not consulted. -// The result may be an absolute path or a path relative to the current directory. -func LookPath(file string) (string, error) { - // NOTE(rsc): I wish we could use the Plan 9 behavior here - // (only bypass the path if file begins with / or ./ or ../) - // but that would not match all the Unix shells. - - if strings.Contains(file, "/") { - err := findExecutable(file) - if err == nil { - return file, nil - } - return "", &Error{file, err} - } - pathenv := os.Getenv("PATH") - if pathenv == "" { - return "", &Error{file, ErrNotFound} - } - for _, dir := range strings.Split(pathenv, ":") { - if dir == "" { - // Unix shell semantics: path element "" means "." - dir = "." - } - path := dir + "/" + file - if err := findExecutable(path); err == nil { - return path, nil - } - } - return "", &Error{file, ErrNotFound} -} |