3 files changed, 172 insertions, 0 deletions

diff --git a/vendor/github.com/mitchellh/go-homedir/LICENSE b/vendor/github.com/mitchellh/go-homedir/LICENSE
new file mode 100644
index 0000000..f9c841a
--- /dev/null
+++ b/vendor/github.com/mitchellh/go-homedir/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 Mitchell Hashimoto
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/vendor/github.com/mitchellh/go-homedir/README.md b/vendor/github.com/mitchellh/go-homedir/README.md
new file mode 100644
index 0000000..d70706d
--- /dev/null
+++ b/vendor/github.com/mitchellh/go-homedir/README.md
@@ -0,0 +1,14 @@
+# go-homedir
+
+This is a Go library for detecting the user's home directory without
+the use of cgo, so the library can be used in cross-compilation environments.
+
+Usage is incredibly simple, just call `homedir.Dir()` to get the home directory
+for a user, and `homedir.Expand()` to expand the `~` in a path to the home
+directory.
+
+**Why not just use `os/user`?** The built-in `os/user` package requires
+cgo on Darwin systems. This means that any Go code that uses that package
+cannot cross compile. But 99% of the time the use for `os/user` is just to
+retrieve the home directory, which we can do for the current user without
+cgo. This library does that, enabling cross-compilation.
diff --git a/vendor/github.com/mitchellh/go-homedir/homedir.go b/vendor/github.com/mitchellh/go-homedir/homedir.go
new file mode 100644
index 0000000..47e1f9e
--- /dev/null
+++ b/vendor/github.com/mitchellh/go-homedir/homedir.go
@@ -0,0 +1,137 @@
+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
+}
+
+func dirUnix() (string, error) {
+        // First prefer the HOME environmental variable
+        if home := os.Getenv("HOME"); home != "" {
+                return home, nil
+        }
+
+        // If that fails, try getent
+        var stdout bytes.Buffer
+        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
+        }
+
+        drive := os.Getenv("HOMEDRIVE")
+        path := os.Getenv("HOMEPATH")
+        home := drive + path
+        if drive == "" || path == "" {
+                home = os.Getenv("USERPROFILE")
+        }
+        if home == "" {
+                return "", errors.New("HOMEDRIVE, HOMEPATH, and USERPROFILE are blank")
+        }
+
+        return home, nil
+}