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122 lines
2.4 KiB
122 lines
2.4 KiB
package shell
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import (
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"context"
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"fmt"
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"io"
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"strings"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
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"github.com/seaweedfs/seaweedfs/weed/util"
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)
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func init() {
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Commands = append(Commands, &commandFsTree{})
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}
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type commandFsTree struct {
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}
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func (c *commandFsTree) Name() string {
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return "fs.tree"
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}
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func (c *commandFsTree) Help() string {
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return `recursively list all files under a directory
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fs.tree /some/dir
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`
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}
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func (c *commandFsTree) HasTag(CommandTag) bool {
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return false
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}
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func (c *commandFsTree) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
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if handleHelpRequest(c, args, writer) {
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return nil
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}
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path, err := commandEnv.parseUrl(findInputDirectory(args))
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if err != nil {
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return err
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}
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dir, name := util.FullPath(path).DirAndName()
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dirCount, fCount, terr := treeTraverseDirectory(writer, commandEnv, util.FullPath(dir), name, newPrefix(), -1)
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if terr == nil {
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fmt.Fprintf(writer, "%d directories, %d files\n", dirCount, fCount)
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}
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return terr
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}
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func treeTraverseDirectory(writer io.Writer, filerClient filer_pb.FilerClient, dir util.FullPath, name string, prefix *Prefix, level int) (directoryCount, fileCount int64, err error) {
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prefix.addMarker(level)
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err = filer_pb.ReadDirAllEntries(context.Background(), filerClient, dir, name, func(entry *filer_pb.Entry, isLast bool) error {
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if level < 0 && name != "" {
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if entry.Name != name {
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return nil
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}
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}
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fmt.Fprintf(writer, "%s%s\n", prefix.getPrefix(level, isLast), entry.Name)
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if entry.IsDirectory {
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directoryCount++
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subDir := dir.Child(entry.Name)
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dirCount, fCount, terr := treeTraverseDirectory(writer, filerClient, subDir, "", prefix, level+1)
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directoryCount += dirCount
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fileCount += fCount
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err = terr
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} else {
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fileCount++
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}
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return nil
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})
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return
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}
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type Prefix struct {
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markers map[int]bool
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}
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func newPrefix() *Prefix {
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return &Prefix{
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markers: make(map[int]bool),
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}
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}
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func (p *Prefix) addMarker(marker int) {
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p.markers[marker] = true
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}
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func (p *Prefix) removeMarker(marker int) {
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delete(p.markers, marker)
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}
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func (p *Prefix) getPrefix(level int, isLastChild bool) string {
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var sb strings.Builder
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if level < 0 {
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return ""
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}
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for i := 0; i < level; i++ {
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if _, ok := p.markers[i]; ok {
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sb.WriteString("│")
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} else {
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sb.WriteString(" ")
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}
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sb.WriteString(" ")
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}
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if isLastChild {
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sb.WriteString("└──")
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p.removeMarker(level)
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} else {
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sb.WriteString("├──")
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}
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return sb.String()
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}
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