seaweedfs/weed/shell/command_fs_ls.go

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package shell
import (
"fmt"
"io"
"os"
"os/user"
"strconv"
"strings"
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"github.com/seaweedfs/seaweedfs/weed/filer"
"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
"github.com/seaweedfs/seaweedfs/weed/util"
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)
func init() {
Commands = append(Commands, &commandFsLs{})
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}
type commandFsLs struct {
}
func (c *commandFsLs) Name() string {
return "fs.ls"
}
func (c *commandFsLs) Help() string {
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return `list all files under a directory
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fs.ls [-l] [-a] /dir/
fs.ls [-l] [-a] /dir/file_name
fs.ls [-l] [-a] /dir/file_prefix
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`
}
func (c *commandFsLs) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) {
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var isLongFormat, showHidden bool
for _, arg := range args {
if !strings.HasPrefix(arg, "-") {
break
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}
for _, t := range arg {
switch t {
case 'a':
showHidden = true
case 'l':
isLongFormat = true
}
}
}
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path, err := commandEnv.parseUrl(findInputDirectory(args))
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if err != nil {
return err
}
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if commandEnv.isDirectory(path) {
path = path + "/"
}
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dir, name := util.FullPath(path).DirAndName()
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entryCount := 0
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err = filer_pb.ReadDirAllEntries(commandEnv, util.FullPath(dir), name, func(entry *filer_pb.Entry, isLast bool) error {
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if !showHidden && strings.HasPrefix(entry.Name, ".") {
return nil
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}
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entryCount++
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if isLongFormat {
fileMode := os.FileMode(entry.Attributes.FileMode)
userName, groupNames := entry.Attributes.UserName, entry.Attributes.GroupName
if userName == "" {
if user, userErr := user.LookupId(strconv.Itoa(int(entry.Attributes.Uid))); userErr == nil {
userName = user.Username
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}
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}
groupName := ""
if len(groupNames) > 0 {
groupName = groupNames[0]
}
if groupName == "" {
if group, groupErr := user.LookupGroupId(strconv.Itoa(int(entry.Attributes.Gid))); groupErr == nil {
groupName = group.Name
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}
}
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if strings.HasSuffix(dir, "/") {
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// just for printing
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dir = dir[:len(dir)-1]
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}
fmt.Fprintf(writer, "%s %3d %s %s %6d %s/%s\n",
fileMode, len(entry.Chunks),
userName, groupName,
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filer.FileSize(entry), dir, entry.Name)
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} else {
fmt.Fprintf(writer, "%s\n", entry.Name)
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}
return nil
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})
if isLongFormat && err == nil {
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fmt.Fprintf(writer, "total %d\n", entryCount)
}
return
}