package conan

  1. Overview
  2. Docs
On This Page
  1. recognition.
Identify type of your file (such as the MIME type)

Install 

dune-project
 Dependency

github.com Readme Changelog BSD-2-Clause License Edit opam file Versions (6)

Authors

  1. R
    Romain Calascibetta <romain.calascibetta@gmail.com>

Maintainers

  1. R
    Romain Calascibetta <romain.calascibetta@gmail.com>

Sources

conan-0.0.6.tbz
sha256=b210257b881715ffb9dcbf88678c8559ec2aef26795a5304afd5a8b4bbf11e16
sha512=5b46c70c237a6c40b1119bdc33e30fb4911d9f60e5b6bc3976604a0a4bd17635ecbb0862b9944e6022090ab0f1d01bd5e1832b465a7c2c5328e88d7cf23c2e40

doc/conan.string/Conan_string/index.html

Module Conan_stringSource

recognition.

Conan_string is a system-free implementation of the file recognition. This implementation does not uses any syscalls - and it can be safely used into a MirageOS example.

So Conan_string does not have an access to a database. The user must rebuild a Conan.Tree.t by himself/herself via tree_of_string for example. Then, from this tree, the user is able to recognize a payload as a simple string with run:

  let v =
    {file|0       byte    0x66
  >1      byte    0x6f
  >>1     byte    0x6f    foo header
  |file}

  let tree = match Conan_string.tree_of_string v with
    | Ok tree -> tree
    | Error (`Msg err) -> failwith err

  let database = Conan.Tree.database ~tree

  let m = match Conan_string.run ~database contents with
    | Ok m -> m
    | Error (`Msg err) -> failwith err
Sourceval tree_of_string : string -> (Conan.Tree.t, [> `Msg of string ]) result

tree_of_string str tries to parse the given str as a decision tree according to the libmagic format.

Sourceval run : database:Conan.Process.database -> string -> (Conan.Metadata.t, [> `Msg of string ]) result

run ~database contents tries to recognize the given contents with the help of database. The databse can be made via Conan.Process.database. Indeed, a Conan.Tree.t can have some indirect decision paths so we must pre-process the tree to agglomerate such indirections.