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Last change
on this file since 39 was 39, checked in by fox, 2 years ago |
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Read References field; referred by listing; test & tidy documentation
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File size:
956 bytes
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| 1 | let random_state = Random.State.make_self_init
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| 2 |
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| 3 | (*module UUID = struct*)
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| 4 | (*type t = Uuidm.t*)
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| 5 | (*let compare = Uuidm.compare*)
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| 6 | (*let to_string = Uuidm.to_string*)
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| 7 | (*let of_string = Uuidm.of_string*)
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| 8 | (*let to_bytes = Uuidm.to_bytes*)
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| 9 | (*let of_bytes = Uuidm.of_bytes*)
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| 10 | (*let generate ?(random_state=random_state ()) = Uuidm.v4_gen random_state*)
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| 11 | (*let nil = Uuidm.nil*)
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| 12 | (*end*)
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| 13 |
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| 14 | type t = string
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| 15 | let compare = String.compare
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| 16 | let nil = ""
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| 17 |
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| 18 | let short ?(len) id =
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| 19 | let id_len = String.length id in
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| 20 | let l = match len with Some l -> l | None -> if id_len = 36 then 8 else 6 in
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| 21 | String.sub id 0 (min l id_len)
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| 22 |
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| 23 | let generate ?(len=6) ?(seed=random_state ()) () =
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| 24 | let b32 i = char_of_int @@
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| 25 | if i < 10 then i+48 else
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| 26 | if i < 18 then i+87 else
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| 27 | if i < 20 then i+88 else
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| 28 | if i < 22 then i+89 else
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| 29 | if i < 27 then i+90 else
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| 30 | if i < 32 then i+91 else
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| 31 | (invalid_arg ("id.char" ^ string_of_int i)) in
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| 32 | let c _ = b32 (Random.State.int seed 31) in
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| 33 | String.init len c
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