-module(rebar_prv_edoc).
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-behaviour(provider).
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-export([init/1,
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do/1,
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format_error/1]).
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-include("rebar.hrl").
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-include_lib("providers/include/providers.hrl").
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-define(PROVIDER, edoc).
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-define(DEPS, [compile]).
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%% ===================================================================
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%% Public API
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%% ===================================================================
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-spec init(rebar_state:t()) -> {ok, rebar_state:t()}.
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init(State) ->
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State1 = rebar_state:add_provider(State, providers:create([{name, ?PROVIDER},
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{module, ?MODULE},
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{bare, true},
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{deps, ?DEPS},
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{example, "rebar3 edoc"},
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{short_desc, "Generate documentation using edoc."},
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{desc, "Generate documentation using edoc."},
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{opts, []},
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{profiles, [docs]}])),
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{ok, State1}.
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-spec do(rebar_state:t()) ->
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{ok, rebar_state:t()} | {error, string()} | {error, {module(), any()}}.
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do(State) ->
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code:add_pathsa(rebar_state:code_paths(State, all_deps)),
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ProjectApps = rebar_state:project_apps(State),
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Providers = rebar_state:providers(State),
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EdocOpts = rebar_state:get(State, edoc_opts, []),
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ShouldAccPaths = not has_configured_paths(EdocOpts),
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Cwd = rebar_state:dir(State),
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rebar_hooks:run_all_hooks(Cwd, pre, ?PROVIDER, Providers, State),
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Res = try
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lists:foldl(fun(AppInfo, EdocOptsAcc) ->
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rebar_hooks:run_all_hooks(Cwd, pre, ?PROVIDER, Providers, AppInfo, State),
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AppName = ec_cnv:to_list(rebar_app_info:name(AppInfo)),
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?INFO("Running edoc for ~s", [AppName]),
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AppDir = rebar_app_info:dir(AppInfo),
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AppRes = (catch edoc:application(list_to_atom(AppName), AppDir, EdocOptsAcc)),
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rebar_hooks:run_all_hooks(Cwd, post, ?PROVIDER, Providers, AppInfo, State),
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case {AppRes, ShouldAccPaths} of
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{ok, true} ->
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%% edoc wants / on all OSes
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add_to_paths(EdocOptsAcc, AppDir++"/doc");
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{ok, false} ->
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EdocOptsAcc;
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{{'EXIT', error}, _} ->
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%% EDoc is not very descriptive
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%% in terms of failures
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throw({app_failed, AppName})
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end
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end, EdocOpts, ProjectApps)
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catch
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{app_failed, AppName} ->
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{app_failed, AppName}
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end,
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rebar_hooks:run_all_hooks(Cwd, post, ?PROVIDER, Providers, State),
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rebar_utils:cleanup_code_path(rebar_state:code_paths(State, default)),
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case Res of
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{app_failed, App} ->
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?PRV_ERROR({app_failed, App});
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_ ->
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{ok, State}
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end.
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-spec format_error(any()) -> iolist().
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format_error({app_failed, AppName}) ->
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io_lib:format("Failed to generate documentation for app '~s'", [AppName]);
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format_error(Reason) ->
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io_lib:format("~p", [Reason]).
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%% ===================================================================
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%% Internal functions
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%% ===================================================================
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has_configured_paths(EdocOpts) ->
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proplists:get_value(dir, EdocOpts) =/= undefined.
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add_to_paths([], Path) ->
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[{doc_path, [Path]}];
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add_to_paths([{doc_path, Paths}|T], Path) ->
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[{doc_path, [Path | Paths]} | T];
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add_to_paths([H|T], Path) ->
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[H | add_to_paths(T, Path)].
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