package core

  1. Overview
  2. Docs
package core
Legend:
Page
Library
Module
Module type
Parameter
Class
Class type
Source

Source file hexdump_intf.ml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
(** A functor for displaying a type as a sequence of ASCII characters printed in
    hexadecimal.

    [sexp_of_t] and [to_string_hum] print [t] in a similar format to 'hexdump' on Unix
    systems.  For example, the string "Back off, man, I'm a scientist." renders as:

    {v
00000000  42 61 63 6b 20 6f 66 66  2c 20 6d 61 6e 2c 20 49  |Back off, man, I|
00000010  27 6d 20 61 20 73 63 69  65 6e 74 69 73 74 2e     |'m a scientist.|
    v}

    [to_sequence] produces a sequence of strings representing lines in the hex dump.  It
    can be used to process a hex dump incrementally, for example with potentially infinite
    values, or to avoid keeping the entire output in memory at once. *)

open! Import

module type S = sig
  type t

  module Hexdump : sig
    type nonrec t = t [@@deriving sexp_of]

    (** [to_string_hum] renders [t] as a multi-line ASCII string in hexdump format.  [pos]
        and [len] select a subrange of [t] to render.  [max_lines] determines the maximum
        number of lines of hex dump to produce.  If the full hex dump exceeds this number,
        lines in the middle are replaced by a single "..."; the beginning and end of the
        hex dump are left intact.  In order to produce at least some readable hex dump, at
        least 3 lines are always produced. *)
    val to_string_hum
      :  ?max_lines:int (** default: [!default_max_lines] *)
      -> ?pos:int
      -> ?len:int
      -> t
      -> string

    (** [to_sequence] produces the lines of [to_string_hum] as a sequence of strings.
        This may be useful for incrementally rendering a large hex dump without producing
        the whole thing in memory.  Optional arguments function as in [to_string_hum]. *)
    val to_sequence
      :  ?max_lines:int (** default: [!default_max_lines] *)
      -> ?pos:int
      -> ?len:int
      -> t
      -> string Sequence.t

    (** [[%sexp_of: Hexdump.Pretty.t]] is the same as [[%sexp_of: Hexdump.t]], unless the
        underlying sequence of characters is entirely printable. In that case, it is
        rendered directly as a string. This allows e.g. test output to be much more
        compact in the common (printable) case while still being interpretable for any
        byte sequence. *)
    module Pretty : sig
      type nonrec t = t [@@deriving sexp_of]
    end
  end
end

module type S1 = sig
  type _ t

  module Hexdump : sig
    type nonrec 'a t = 'a t [@@deriving sexp_of]

    val to_string_hum : ?max_lines:int -> ?pos:int -> ?len:int -> _ t -> string


    val to_sequence : ?max_lines:int -> ?pos:int -> ?len:int -> _ t -> string Sequence.t

    module Pretty : sig
      type nonrec 'a t = 'a t [@@deriving sexp_of]
    end
  end
end

module type S2 = sig
  type (_, _) t

  module Hexdump : sig
    type nonrec ('a, 'b) t = ('a, 'b) t [@@deriving sexp_of]

    val to_string_hum : ?max_lines:int -> ?pos:int -> ?len:int -> (_, _) t -> string

    val to_sequence
      :  ?max_lines:int
      -> ?pos:int
      -> ?len:int
      -> (_, _) t
      -> string Sequence.t

    module Pretty : sig
      type nonrec ('a, 'b) t = ('a, 'b) t [@@deriving sexp_of]
    end
  end
end

(** The functor [Hexdump.Of_indexable] uses [length] and [get] to iterate over the
    characters in a value and produce a hex dump. *)
module type Indexable = sig
  type t

  val length : t -> int
  val get : t -> int -> char
end

module type Indexable1 = sig
  type _ t

  val length : _ t -> int
  val get : _ t -> int -> char
end

module type Indexable2 = sig
  type (_, _) t

  val length : (_, _) t -> int
  val get : (_, _) t -> int -> char
end

module type Hexdump = sig
  module type Indexable = Indexable
  module type Indexable1 = Indexable1
  module type Indexable2 = Indexable2
  module type S = S
  module type S1 = S1
  module type S2 = S2

  (** Can be used to override the default [~lines] argument for [to_string_hum] and
      [to_sequence] in [S]. *)
  val default_max_lines : int ref

  module Of_indexable (T : Indexable) : S with type t := T.t
  module Of_indexable1 (T : Indexable1) : S1 with type 'a t := 'a T.t
  module Of_indexable2 (T : Indexable2) : S2 with type ('a, 'b) t := ('a, 'b) T.t
end
OCaml

Innovation. Community. Security.

GitHub Discord Twitter Peertube RSS
About
Changelog Releases Industrial Users Academic Users Why OCaml
Ecosystem
Packages Community Events OCaml Planet Jobs
Resources
Install OCaml Get Started Platform Tools Language Manual Standard Library API Books Exercises Papers OCaml Playground Logo
Policies
Carbon Footprint Governance Privacy Code of Conduct