50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
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package cache
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import (
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"os"
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"path/filepath"
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"github.com/pkg/errors"
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"github.com/restic/restic/internal/debug"
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"github.com/restic/restic/internal/fs"
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)
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// getXDGCacheDir returns the cache directory according to XDG basedir spec, see
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// http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
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func getXDGCacheDir() (string, error) {
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xdgcache := os.Getenv("XDG_CACHE_HOME")
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home := os.Getenv("HOME")
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if xdgcache == "" && home == "" {
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return "", errors.New("unable to locate cache directory (XDG_CACHE_HOME and HOME unset)")
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}
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cachedir := ""
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if xdgcache != "" {
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cachedir = filepath.Join(xdgcache, "restic")
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} else if home != "" {
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cachedir = filepath.Join(home, ".cache", "restic")
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}
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fi, err := fs.Stat(cachedir)
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if os.IsNotExist(errors.Cause(err)) {
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err = fs.MkdirAll(cachedir, 0700)
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if err != nil {
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return "", errors.Wrap(err, "MkdirAll")
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}
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fi, err = fs.Stat(cachedir)
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debug.Log("create cache dir %v", cachedir)
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}
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if err != nil {
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return "", errors.Wrap(err, "Stat")
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}
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if !fi.IsDir() {
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return "", errors.Errorf("cache dir %v is not a directory", cachedir)
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}
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return cachedir, nil
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}
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