tar-unix 3.1.2 (latest) · OCaml Package

Lwt_unix I/O for tar-formatted data

type decode_error = [

| `Fatal of Tar.error
| `Unix of Unix.error * string * string
| `Unexpected_end_of_file
| `Msg of string

]

val pp_decode_error : Format.formatter -> decode_error -> unit

type t

val run : 
  ('a, [> decode_error ] as 'b, t) Tar.t ->
  Lwt_unix.file_descr ->
  ('a, 'b) result Lwt.t

val value : ('a, 'err) result Lwt.t -> ('a, 'err, t) Tar.t

val fold : 
  (?global:Tar.Header.Extended.t ->
    Tar.Header.t ->
    'a ->
    ('a, [> decode_error ] as 'err, t) Tar.t) ->
  string ->
  'a ->
  ('a, 'err) result Lwt.t

fold f filename acc folds over the tar archive. The function f is called for each hdr : Tar.Header.t. It should forward the position in the file descriptor by hdr.Tar.Header.file_size.

val extract : 
  ?filter:(Tar.Header.t -> bool) ->
  src:string ->
  string ->
  (unit, [> `Exn of exn | decode_error ]) result Lwt.t

extract ~filter ~src dst extracts the tar archive src into the directory dst. If dst does not exist, it is created. If filter is provided (defaults to fun _ -> true), any file where filter hdr returns false, is skipped.

val create : 
  ?level:Tar.Header.compatibility ->
  ?global:Tar.Header.Extended.t ->
  ?filter:(Tar.Header.t -> bool) ->
  src:string ->
  string ->
  (unit, [ `Msg of string | `Unix of Unix.error * string * string ]) result
    Lwt.t

create ~level ~filter ~src dst creates a tar archive at dst. It uses src, a directory name, as input. If filter is provided (defaults to fun _ -> true), any file where filter hdr returns false is skipped.

val header_of_file : 
  ?level:Tar.Header.compatibility ->
  string ->
  (Tar.Header.t, [ `Msg of string | `Unix of Unix.error * string * string ])
    result
    Lwt.t

header_of_file ~level filename returns the tar header of filename.

val append_file : 
  ?level:Tar.Header.compatibility ->
  ?header:Tar.Header.t ->
  string ->
  Lwt_unix.file_descr ->
  (unit, [ `Msg of string | `Unix of Unix.error * string * string ]) result
    Lwt.t

append_file ~level ~header filename fd appends the contents of filename to the tar archive fd. If header is not provided, header_of_file is used for constructing a header.

val write_header : 
  ?level:Tar.Header.compatibility ->
  Tar.Header.t ->
  Lwt_unix.file_descr ->
  (unit, [ `Msg of string | `Unix of Unix.error * string * string ]) result
    Lwt.t

write_header ~level hdr fd writes the header hdr to fd.

val write_global_extended_header : 
  ?level:Tar.Header.compatibility ->
  Tar.Header.Extended.t ->
  Lwt_unix.file_descr ->
  (unit, [ `Msg of string | `Unix of Unix.error * string * string ]) result
    Lwt.t

write_global_extended_header ~level hdr fd writes the extended header hdr to fd.

val write_end : Lwt_unix.file_descr -> (unit, [ `Msg of string ]) result Lwt.t

write_end fd writes the tar end marker to fd.

package tar-unix