Thanos did someting

[bytom/vapor.git] / vendor / github.com / mitchellh / go-homedir / homedir.go

diff --git a/vendor/github.com/mitchellh/go-homedir/homedir.go b/vendor/github.com/mitchellh/go-homedir/homedir.go
deleted file mode 100644 (file)
index 2537853..0000000
--- a/vendor/github.com/mitchellh/go-homedir/homedir.go
+++ /dev/null
@@ -1,167 +0,0 @@
-package homedir
-
-import (
-       "bytes"
-       "errors"
-       "os"
-       "os/exec"
-       "path/filepath"
-       "runtime"
-       "strconv"
-       "strings"
-       "sync"
-)
-
-// DisableCache will disable caching of the home directory. Caching is enabled
-// by default.
-var DisableCache bool
-
-var homedirCache string
-var cacheLock sync.RWMutex
-
-// Dir returns the home directory for the executing user.
-//
-// This uses an OS-specific method for discovering the home directory.
-// An error is returned if a home directory cannot be detected.
-func Dir() (string, error) {
-       if !DisableCache {
-               cacheLock.RLock()
-               cached := homedirCache
-               cacheLock.RUnlock()
-               if cached != "" {
-                       return cached, nil
-               }
-       }
-
-       cacheLock.Lock()
-       defer cacheLock.Unlock()
-
-       var result string
-       var err error
-       if runtime.GOOS == "windows" {
-               result, err = dirWindows()
-       } else {
-               // Unix-like system, so just assume Unix
-               result, err = dirUnix()
-       }
-
-       if err != nil {
-               return "", err
-       }
-       homedirCache = result
-       return result, nil
-}
-
-// Expand expands the path to include the home directory if the path
-// is prefixed with `~`. If it isn't prefixed with `~`, the path is
-// returned as-is.
-func Expand(path string) (string, error) {
-       if len(path) == 0 {
-               return path, nil
-       }
-
-       if path[0] != '~' {
-               return path, nil
-       }
-
-       if len(path) > 1 && path[1] != '/' && path[1] != '\\' {
-               return "", errors.New("cannot expand user-specific home dir")
-       }
-
-       dir, err := Dir()
-       if err != nil {
-               return "", err
-       }
-
-       return filepath.Join(dir, path[1:]), nil
-}
-
-// Reset clears the cache, forcing the next call to Dir to re-detect
-// the home directory. This generally never has to be called, but can be
-// useful in tests if you're modifying the home directory via the HOME
-// env var or something.
-func Reset() {
-       cacheLock.Lock()
-       defer cacheLock.Unlock()
-       homedirCache = ""
-}
-
-func dirUnix() (string, error) {
-       homeEnv := "HOME"
-       if runtime.GOOS == "plan9" {
-               // On plan9, env vars are lowercase.
-               homeEnv = "home"
-       }
-
-       // First prefer the HOME environmental variable
-       if home := os.Getenv(homeEnv); home != "" {
-               return home, nil
-       }
-
-       var stdout bytes.Buffer
-
-       // If that fails, try OS specific commands
-       if runtime.GOOS == "darwin" {
-               cmd := exec.Command("sh", "-c", `dscl -q . -read /Users/"$(whoami)" NFSHomeDirectory | sed 's/^[^ ]*: //'`)
-               cmd.Stdout = &stdout
-               if err := cmd.Run(); err == nil {
-                       result := strings.TrimSpace(stdout.String())
-                       if result != "" {
-                               return result, nil
-                       }
-               }
-       } else {
-               cmd := exec.Command("getent", "passwd", strconv.Itoa(os.Getuid()))
-               cmd.Stdout = &stdout
-               if err := cmd.Run(); err != nil {
-                       // If the error is ErrNotFound, we ignore it. Otherwise, return it.
-                       if err != exec.ErrNotFound {
-                               return "", err
-                       }
-               } else {
-                       if passwd := strings.TrimSpace(stdout.String()); passwd != "" {
-                               // username:password:uid:gid:gecos:home:shell
-                               passwdParts := strings.SplitN(passwd, ":", 7)
-                               if len(passwdParts) > 5 {
-                                       return passwdParts[5], nil
-                               }
-                       }
-               }
-       }
-
-       // If all else fails, try the shell
-       stdout.Reset()
-       cmd := exec.Command("sh", "-c", "cd && pwd")
-       cmd.Stdout = &stdout
-       if err := cmd.Run(); err != nil {
-               return "", err
-       }
-
-       result := strings.TrimSpace(stdout.String())
-       if result == "" {
-               return "", errors.New("blank output when reading home directory")
-       }
-
-       return result, nil
-}
-
-func dirWindows() (string, error) {
-       // First prefer the HOME environmental variable
-       if home := os.Getenv("HOME"); home != "" {
-               return home, nil
-       }
-
-       // Prefer standard environment variable USERPROFILE
-       if home := os.Getenv("USERPROFILE"); home != "" {
-               return home, nil
-       }
-
-       drive := os.Getenv("HOMEDRIVE")
-       path := os.Getenv("HOMEPATH")
-       home := drive + path
-       if drive == "" || path == "" {
-               return "", errors.New("HOMEDRIVE, HOMEPATH, or USERPROFILE are blank")
-       }
-
-       return home, nil
-}