mirror of
https://github.com/schollz/cowyo.git
synced 2023-08-10 21:13:00 +03:00
50 lines
1.8 KiB
Go
50 lines
1.8 KiB
Go
// Package ospath provides utilities to get OS-specific directories.
|
|
package ospath
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"os/user"
|
|
"path/filepath"
|
|
"runtime"
|
|
)
|
|
|
|
// CacheDir tries to acquire an OS-specific app cache directory for the given importPath.
|
|
// Cache directory contains the app's cached data that can be regenerated as needed.
|
|
// Apps should never rely on the existence of cache files.
|
|
//
|
|
// It's guaranteed to be a unique directory for the importPath.
|
|
// Before returning the directory's path, CacheDir creates the directory if it
|
|
// doesn't already exist, so it can be used right away.
|
|
func CacheDir(importPath string) (string, error) {
|
|
var home string
|
|
if u, err := user.Current(); err != nil {
|
|
home = os.Getenv("HOME")
|
|
if home == "" {
|
|
return "", err
|
|
}
|
|
} else {
|
|
home = u.HomeDir
|
|
}
|
|
// TODO: Support Windows in analogous ways. Also support mobile devices (iOS, Android).
|
|
// Think about web? While HTML5 Local Storage could be used, it's not going to be compatible
|
|
// with filepaths; so maybe consider returning a webdav.FileSystem or so instead? Needs consideration.
|
|
switch {
|
|
case runtime.GOOS == "darwin" && runtime.GOARCH == "amd64":
|
|
dir := filepath.Join(home, "Library", "Caches", filepath.FromSlash(importPath))
|
|
if err := os.MkdirAll(dir, 0700); err != nil {
|
|
return "", err
|
|
}
|
|
return dir, nil
|
|
case runtime.GOOS == "linux" && (runtime.GOARCH == "386" || runtime.GOARCH == "amd64"):
|
|
// $HOME/.cache path is based on https://github.com/rsc/gt/blob/ee152ddc9ec2a99d345cf81b6ba0f40a83c9dd6f/main.go#L22.
|
|
dir := filepath.Join(home, ".cache", filepath.FromSlash(importPath))
|
|
if err := os.MkdirAll(dir, 0700); err != nil {
|
|
return "", err
|
|
}
|
|
return dir, nil
|
|
default:
|
|
return "", fmt.Errorf("ospath.CacheDir not implemented for %s/%s", runtime.GOOS, runtime.GOARCH)
|
|
}
|
|
}
|