eosc/env/home.go at v0.5.2 · eolinker/eosc

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package env

import (

"bytes"

"os"

"os/exec"

"os/user"

"runtime"

"strings"

)

// Home 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 Home() string {

u, err := user.Current()

if nil == err {

return u.HomeDir

}

// cross compile support

if "windows" == runtime.GOOS {

panic("not support windows")

}

// Unix-like system, so just assume Unix

return homeUnix()

}

func homeUnix() string {

// First prefer the HOME environmental variable

if home := os.Getenv("HOME"); home != "" {

return home

}

// If that fails, try the shell

var stdout bytes.Buffer

cmd := exec.Command("sh", "-c", "eval echo ~$USER")

cmd.Stdout = &stdout

if err := cmd.Run(); err != nil {

return ""

}

result := strings.TrimSpace(stdout.String())

if result == "" {

return "/"

}

return result

}

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