forked from TrueCloudLab/restic
79 lines
1.9 KiB
Go
79 lines
1.9 KiB
Go
package layout
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import (
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"encoding/hex"
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"github.com/restic/restic/internal/backend"
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)
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// DefaultLayout implements the default layout for local and sftp backends, as
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// described in the Design document. The `data` directory has one level of
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// subdirs, two characters each (taken from the first two characters of the
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// file name).
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type DefaultLayout struct {
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Path string
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Join func(...string) string
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}
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var defaultLayoutPaths = map[backend.FileType]string{
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backend.PackFile: "data",
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backend.SnapshotFile: "snapshots",
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backend.IndexFile: "index",
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backend.LockFile: "locks",
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backend.KeyFile: "keys",
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}
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func (l *DefaultLayout) String() string {
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return "<DefaultLayout>"
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}
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// Name returns the name for this layout.
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func (l *DefaultLayout) Name() string {
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return "default"
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}
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// Dirname returns the directory path for a given file type and name.
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func (l *DefaultLayout) Dirname(h backend.Handle) string {
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p := defaultLayoutPaths[h.Type]
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if h.Type == backend.PackFile && len(h.Name) > 2 {
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p = l.Join(p, h.Name[:2]) + "/"
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}
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return l.Join(l.Path, p) + "/"
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}
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// Filename returns a path to a file, including its name.
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func (l *DefaultLayout) Filename(h backend.Handle) string {
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name := h.Name
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if h.Type == backend.ConfigFile {
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return l.Join(l.Path, "config")
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}
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return l.Join(l.Dirname(h), name)
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}
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// Paths returns all directory names needed for a repo.
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func (l *DefaultLayout) Paths() (dirs []string) {
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for _, p := range defaultLayoutPaths {
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dirs = append(dirs, l.Join(l.Path, p))
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}
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// also add subdirs
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for i := 0; i < 256; i++ {
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subdir := hex.EncodeToString([]byte{byte(i)})
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dirs = append(dirs, l.Join(l.Path, defaultLayoutPaths[backend.PackFile], subdir))
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}
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return dirs
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}
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// Basedir returns the base dir name for type t.
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func (l *DefaultLayout) Basedir(t backend.FileType) (dirname string, subdirs bool) {
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if t == backend.PackFile {
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subdirs = true
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}
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dirname = l.Join(l.Path, defaultLayoutPaths[t])
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return
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}
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