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hackney

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Simple HTTP client with HTTP/1.1, HTTP/2, and HTTP/3 support

Security advisory: This version has known vulnerabilities. View advisories
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hackney src hackney_app hackney_deps.erl
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src/hackney_app/hackney_deps.erl 

%%% -*- erlang -*-

%%%

%%% This file is part of hackney released under the Apache 2 license.

%%% See the NOTICE for more information.

%%%



-module(hackney_deps).

-author('Justin Sheehy <justin@basho.com>').

-author('Andy Gross <andy@basho.com>').



-export([ensure/0, ensure/1]).

-export([get_base_dir/0, get_base_dir/1]).

-export([local_path/1, local_path/2]).

-export([deps_on_path/0, new_siblings/1]).



%% @spec deps_on_path() -> [ProjNameAndVers]

%% @doc List of project dependencies on the path.

deps_on_path() ->

    ordsets:from_list([filename:basename(filename:dirname(X)) || X <- code:get_path()]).



%% @spec new_siblings(Module) -> [Dir]

%% @doc Find new siblings paths relative to Module that aren't already on the

%%      code path.

new_siblings(Module) ->

    Existing = deps_on_path(),

    SiblingEbin = [ X || X <- filelib:wildcard(local_path(["deps", "*", "ebin"], Module)),

                         filename:basename(filename:dirname(X)) /=  %% don't include self

                             filename:basename(filename:dirname(

                                                 filename:dirname(

                                                   filename:dirname(X)))) ],

    Siblings = [filename:dirname(X) || X <- SiblingEbin,

                           ordsets:is_element(

                             filename:basename(filename:dirname(X)),

                             Existing) =:= false],

    lists:filter(fun filelib:is_dir/1,

                 lists:append([[filename:join([X, "ebin"]),

                                filename:join([X, "include"])] ||

                                  X <- Siblings])).





%% @spec ensure(Module) -> ok

%% @doc Ensure that all ebin and include paths for dependencies

%%      of the application for Module are on the code path.

ensure(Module) ->

    code:add_paths(new_siblings(Module)),

    %% code:clash is annoying when you load couchbeam in a script.

    %% code:clash(),

    ok.



%% @spec ensure() -> ok

%% @doc Ensure that the ebin and include paths for dependencies of

%%      this application are on the code path. Equivalent to

%%      ensure(?Module).

ensure() ->

    ensure(?MODULE).



%% @spec get_base_dir(Module) -> string()

%% @doc Return the application directory for Module. It assumes Module is in

%%      a standard OTP layout application in the ebin or src directory.

get_base_dir(Module) ->

    {file, Here} = code:is_loaded(Module),

    filename:dirname(filename:dirname(Here)).



%% @spec get_base_dir() -> string()

%% @doc Return the application directory for this application. Equivalent to

%%      get_base_dir(?MODULE).

get_base_dir() ->

    get_base_dir(?MODULE).



%% @spec local_path([string()], Module) -> string()

%% @doc Return an application-relative directory from Module's application.

local_path(Components, Module) ->

    filename:join([get_base_dir(Module) | Components]).



%% @spec local_path(Components) -> string()

%% @doc Return an application-relative directory for this application.

%%      Equivalent to local_path(Components, ?MODULE).

local_path(Components) ->

    local_path(Components, ?MODULE).