package shell import ( "fmt" "github.com/chrislusf/seaweedfs/weed/filer" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" "github.com/chrislusf/seaweedfs/weed/util" "io" ) func init() { Commands = append(Commands, &commandFsCat{}) } type commandFsCat struct { } func (c *commandFsCat) Name() string { return "fs.cat" } func (c *commandFsCat) Help() string { return `stream the file content on to the screen fs.cat /dir/file_name ` } func (c *commandFsCat) Do(args []string, commandEnv *CommandEnv, writer io.Writer) (err error) { path, err := commandEnv.parseUrl(findInputDirectory(args)) if err != nil { return err } if commandEnv.isDirectory(path) { return fmt.Errorf("%s is a directory", path) } dir, name := util.FullPath(path).DirAndName() return commandEnv.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error { request := &filer_pb.LookupDirectoryEntryRequest{ Name: name, Directory: dir, } respLookupEntry, err := filer_pb.LookupEntry(client, request) if err != nil { return err } if len(respLookupEntry.Entry.Content) > 0 { _, err = writer.Write(respLookupEntry.Entry.Content) return err } return filer.StreamContent(commandEnv.MasterClient, writer, respLookupEntry.Entry.Chunks, 0, int64(filer.FileSize(respLookupEntry.Entry))) }) }