storj/cmd/uplinkng/utils.go

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// Copyright (C) 2021 Storj Labs, Inc.
// See LICENSE for copying information.
package main
import (
"os"
"path/filepath"
"runtime"
"strings"
)
// appDir returns best base directory for the currently running operating system. It
// has a legacy bool to have it return the same values that storj.io/common/fpath.ApplicationDir
// would have returned.
func appDir(legacy bool, subdir ...string) string {
for i := range subdir {
if runtime.GOOS == "windows" || runtime.GOOS == "darwin" {
subdir[i] = strings.Title(subdir[i])
} else {
subdir[i] = strings.ToLower(subdir[i])
}
}
var appdir string
home := os.Getenv("HOME")
switch runtime.GOOS {
case "windows":
// Windows standards: https://msdn.microsoft.com/en-us/library/windows/apps/hh465094.aspx?f=255&MSPPError=-2147217396
for _, env := range []string{"AppData", "AppDataLocal", "UserProfile", "Home"} {
val := os.Getenv(env)
if val != "" {
appdir = val
break
}
}
case "darwin":
// Mac standards: https://developer.apple.com/library/archive/documentation/FileManagement/Conceptual/FileSystemProgrammingGuide/MacOSXDirectories/MacOSXDirectories.html
appdir = filepath.Join(home, "Library", "Application Support")
case "linux":
fallthrough
default:
// Linux standards: https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html
if legacy {
appdir = os.Getenv("XDG_DATA_HOME")
if appdir == "" && home != "" {
appdir = filepath.Join(home, ".local", "share")
}
} else {
appdir = os.Getenv("XDG_CONFIG_HOME")
if appdir == "" && home != "" {
appdir = filepath.Join(home, ".config")
}
}
}
return filepath.Join(append([]string{appdir}, subdir...)...)
}