package irmin-pack

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in-package search v0.2.0

Irmin backend which stores values in a pack file

Install

Dune Dependency

github.com Readme Changelog ISC License Edit opam file Versions (44)

Authors

T

Thomas Gazagnaire

Maintainers

T

thomas@gazagnaire.org

Sources

irmin-3.3.1.tbz

sha256=535254ca443858bfc9e540535977fed63e9206d4b78c5cac0239d1e6657b5c78

sha512=fa18557fcf808121a0495de707c6f7bff4a69197b310480816648adafd4a659b5673a1f5bbf4574f517b7d93253735ef7798b0c365d87afac60675007ef19b54

doc/irmin-pack.unix/Irmin_pack_unix/Inode/Make_persistent/argument-1-H/index.html

Parameter `Make_persistent.H`

Signature for digest hashes, inspired by Digestif.

type t

The type for digest hashes.

val hash : ((string -> unit) -> unit) -> t

Compute a deterministic store key from a sequence of strings.

val short_hash : t -> int

short_hash h is a small hash of h, to be used for instance as the `hash` function of an OCaml Hashtbl.

val hash_size : int

hash_size is the size of hash results, in bytes.

val to_raw_string : t -> string

to_raw_string t is the raw sequence of bytes in t (of length hash_size).

val unsafe_of_raw_string : string -> t

unsafe_of_raw_string b is the hash consisting of the raw sequence of bytes b.

Warning: this function cannot guarantee that the supplied byte string is a valid output of the hash process, so should only be used on strings that are known to have been built with to_raw_string.

val short_hash_substring : Bigstringaf.t -> off:int -> int

short_hash_substring t off computes the short-hash of the raw hash data contained in t at offset off. It has behaviour equivalent to:

  Bigstringaf.substring t ~off ~len:hash_size
  |> unsafe_of_raw_string
  |> short_hash

but may be more efficient due to not needing to allocate an intermediate string.

Value Types

val t : t Irmin.Type.t

t is the value type for t.

On This Page

Value Types