github.com/10XDev/rclone@v1.52.3-0.20200626220027-16af9ab76b2a/cmd/touch/touch.go (about) 1 package touch 2 3 import ( 4 "bytes" 5 "context" 6 "time" 7 8 "github.com/pkg/errors" 9 "github.com/rclone/rclone/cmd" 10 "github.com/rclone/rclone/fs" 11 "github.com/rclone/rclone/fs/config/flags" 12 "github.com/rclone/rclone/fs/object" 13 "github.com/spf13/cobra" 14 ) 15 16 var ( 17 notCreateNewFile bool 18 timeAsArgument string 19 localTime bool 20 ) 21 22 const defaultLayout string = "060102" 23 const layoutDateWithTime = "2006-01-02T15:04:05" 24 25 func init() { 26 cmd.Root.AddCommand(commandDefinition) 27 cmdFlags := commandDefinition.Flags() 28 flags.BoolVarP(cmdFlags, ¬CreateNewFile, "no-create", "C", false, "Do not create the file if it does not exist.") 29 flags.StringVarP(cmdFlags, &timeAsArgument, "timestamp", "t", "", "Use specified time instead of the current time of day.") 30 flags.BoolVarP(cmdFlags, &localTime, "localtime", "", false, "Use localtime for timestamp, not UTC.") 31 } 32 33 var commandDefinition = &cobra.Command{ 34 Use: "touch remote:path", 35 Short: `Create new file or change file modification time.`, 36 Long: ` 37 Set the modification time on object(s) as specified by remote:path to 38 have the current time. 39 40 If remote:path does not exist then a zero sized object will be created 41 unless the --no-create flag is provided. 42 43 If --timestamp is used then it will set the modification time to that 44 time instead of the current time. Times may be specified as one of: 45 46 - 'YYMMDD' - eg. 17.10.30 47 - 'YYYY-MM-DDTHH:MM:SS' - eg. 2006-01-02T15:04:05 48 49 Note that --timestamp is in UTC if you want local time then add the 50 --localtime flag. 51 `, 52 Run: func(command *cobra.Command, args []string) { 53 cmd.CheckArgs(1, 1, command, args) 54 fsrc, srcFileName := cmd.NewFsDstFile(args) 55 cmd.Run(true, false, command, func() error { 56 return Touch(context.Background(), fsrc, srcFileName) 57 }) 58 }, 59 } 60 61 //Touch create new file or change file modification time. 62 func Touch(ctx context.Context, fsrc fs.Fs, srcFileName string) (err error) { 63 timeAtr := time.Now() 64 if timeAsArgument != "" { 65 layout := defaultLayout 66 if len(timeAsArgument) == len(layoutDateWithTime) { 67 layout = layoutDateWithTime 68 } 69 var timeAtrFromFlags time.Time 70 if localTime { 71 timeAtrFromFlags, err = time.ParseInLocation(layout, timeAsArgument, time.Local) 72 } else { 73 timeAtrFromFlags, err = time.Parse(layout, timeAsArgument) 74 } 75 if err != nil { 76 return errors.Wrap(err, "failed to parse date/time argument") 77 } 78 timeAtr = timeAtrFromFlags 79 } 80 file, err := fsrc.NewObject(ctx, srcFileName) 81 if err != nil { 82 if !notCreateNewFile { 83 var buffer []byte 84 src := object.NewStaticObjectInfo(srcFileName, timeAtr, int64(len(buffer)), true, nil, fsrc) 85 _, err = fsrc.Put(ctx, bytes.NewBuffer(buffer), src) 86 if err != nil { 87 return err 88 } 89 } 90 return nil 91 } 92 err = file.SetModTime(ctx, timeAtr) 93 if err != nil { 94 return errors.Wrap(err, "touch: couldn't set mod time") 95 } 96 return nil 97 }