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The `github.com/mitchellh/go-homedir` repo is archived, no longer needed, and no longer maintained. - `homedir.Dir` is replaced by the stdlib `os.UserHomeDir` - `homedir.Expand` is replaced by fsutil.ExpandHome` in the `github.com/ipfs/kubo/misc/fsutil` package. Additional functionality, such as `DirWritable` and `FileExists` was moved into or included in the `github.com/ipfs/kubo/misc/fsutil` package.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| package fsutil | ||
|
|
||
| import ( | ||
| "errors" | ||
| "fmt" | ||
| "io/fs" | ||
| "os" | ||
| "path/filepath" | ||
| ) | ||
|
|
||
| // DirWritable checks if a directory is writable. If the directory does | ||
| // not exist it is created with writable permission. | ||
| func DirWritable(dir string) error { | ||
| if dir == "" { | ||
| return errors.New("directory not specified") | ||
| } | ||
|
|
||
| var err error | ||
| dir, err = ExpandHome(dir) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| fi, err := os.Stat(dir) | ||
| if err != nil { | ||
| if errors.Is(err, fs.ErrNotExist) { | ||
| // Directory does not exist, so create it. | ||
| err = os.Mkdir(dir, 0775) | ||
| if err == nil { | ||
| return nil | ||
| } | ||
| } | ||
| if errors.Is(err, fs.ErrPermission) { | ||
| err = fs.ErrPermission | ||
| } | ||
| return fmt.Errorf("directory not writable: %s: %w", dir, err) | ||
| } | ||
| if !fi.IsDir() { | ||
| return fmt.Errorf("not a directory: %s", dir) | ||
| } | ||
|
|
||
| // Directory exists, check that a file can be written. | ||
| file, err := os.CreateTemp(dir, "writetest") | ||
| if err != nil { | ||
| if errors.Is(err, fs.ErrPermission) { | ||
| err = fs.ErrPermission | ||
| } | ||
| return fmt.Errorf("directory not writable: %s: %w", dir, err) | ||
| } | ||
| file.Close() | ||
| return os.Remove(file.Name()) | ||
| } | ||
|
|
||
| // ExpandHome 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 ExpandHome(path string) (string, error) { | ||
| if path == "" { | ||
| 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 := os.UserHomeDir() | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
||
| return filepath.Join(dir, path[1:]), nil | ||
| } | ||
|
|
||
| // FileExists return true if the file exists | ||
| func FileExists(filename string) bool { | ||
| _, err := os.Lstat(filename) | ||
| return !errors.Is(err, os.ErrNotExist) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| package fsutil_test | ||
|
|
||
| import ( | ||
| "io/fs" | ||
| "os" | ||
| "path/filepath" | ||
| "runtime" | ||
| "testing" | ||
|
|
||
| "github.com/ipfs/kubo/misc/fsutil" | ||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
|
||
| func TestDirWritable(t *testing.T) { | ||
| err := fsutil.DirWritable("") | ||
| require.Error(t, err) | ||
|
|
||
| err = fsutil.DirWritable("~nosuchuser/tmp") | ||
| require.Error(t, err) | ||
|
|
||
| tmpDir := t.TempDir() | ||
|
|
||
| wrDir := filepath.Join(tmpDir, "readwrite") | ||
| err = fsutil.DirWritable(wrDir) | ||
| require.NoError(t, err) | ||
|
|
||
| // Check that DirWritable created directory. | ||
| fi, err := os.Stat(wrDir) | ||
| require.NoError(t, err) | ||
| require.True(t, fi.IsDir()) | ||
|
|
||
| err = fsutil.DirWritable(wrDir) | ||
| require.NoError(t, err) | ||
|
|
||
| // If running on Windows, skip read-only directory tests. | ||
| if runtime.GOOS == "windows" { | ||
| t.SkipNow() | ||
| } | ||
|
|
||
| roDir := filepath.Join(tmpDir, "readonly") | ||
| require.NoError(t, os.Mkdir(roDir, 0500)) | ||
| err = fsutil.DirWritable(roDir) | ||
| require.ErrorIs(t, err, fs.ErrPermission) | ||
|
|
||
| roChild := filepath.Join(roDir, "child") | ||
| err = fsutil.DirWritable(roChild) | ||
| require.ErrorIs(t, err, fs.ErrPermission) | ||
| } | ||
|
|
||
| func TestFileExists(t *testing.T) { | ||
| fileName := filepath.Join(t.TempDir(), "somefile") | ||
| require.False(t, fsutil.FileExists(fileName)) | ||
|
|
||
| file, err := os.Create(fileName) | ||
| require.NoError(t, err) | ||
| file.Close() | ||
|
|
||
| require.True(t, fsutil.FileExists(fileName)) | ||
| } | ||
|
|
||
| func TestExpandHome(t *testing.T) { | ||
| dir, err := fsutil.ExpandHome("") | ||
| require.NoError(t, err) | ||
| require.Equal(t, "", dir) | ||
|
|
||
| origDir := filepath.Join("somedir", "somesub") | ||
| dir, err = fsutil.ExpandHome(origDir) | ||
| require.NoError(t, err) | ||
| require.Equal(t, origDir, dir) | ||
|
|
||
| _, err = fsutil.ExpandHome(filepath.FromSlash("~nosuchuser/somedir")) | ||
| require.Error(t, err) | ||
|
|
||
| homeEnv := "HOME" | ||
| if runtime.GOOS == "windows" { | ||
| homeEnv = "USERPROFILE" | ||
| } | ||
| origHome := os.Getenv(homeEnv) | ||
| defer os.Setenv(homeEnv, origHome) | ||
| homeDir := filepath.Join(t.TempDir(), "testhome") | ||
| os.Setenv(homeEnv, homeDir) | ||
|
|
||
| const subDir = "mytmp" | ||
| origDir = filepath.Join("~", subDir) | ||
| dir, err = fsutil.ExpandHome(origDir) | ||
| require.NoError(t, err) | ||
| require.Equal(t, filepath.Join(homeDir, subDir), dir) | ||
|
|
||
| os.Unsetenv(homeEnv) | ||
| _, err = fsutil.ExpandHome(origDir) | ||
| require.Error(t, err) | ||
| } |
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