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165 lines
5.4 KiB
165 lines
5.4 KiB
#!/usr/bin/env escript
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%% -*- erlang -*-
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%% -------------------------------------------------------------------
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%%
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%% rebar: Erlang Build Tools
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%%
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%% Copyright (c) 2009 Dave Smith (dizzyd@dizzyd.com)
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%%
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%% Permission is hereby granted, free of charge, to any person obtaining a copy
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%% of this software and associated documentation files (the "Software"), to deal
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%% in the Software without restriction, including without limitation the rights
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%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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%% copies of the Software, and to permit persons to whom the Software is
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%% furnished to do so, subject to the following conditions:
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%%
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%% The above copyright notice and this permission notice shall be included in
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%% all copies or substantial portions of the Software.
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%%
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%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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%% THE SOFTWARE.
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%% -------------------------------------------------------------------
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-include_lib("rebar/include/rebar.hrl").
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main(Commands) ->
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%% Pre-load the rebar app so that we get default configuration
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application:load(rebar),
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%% From the current working directory, search recursively and find
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%% all the application and release directories. We always terminate the
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%% recursion at an application or release directory.
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Cwd = rebar_utils:get_cwd(),
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case target_type(Cwd) of
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undefined ->
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Targets = find_targets(Cwd);
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{Type, Filename} ->
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Targets = [{Type, Cwd, Filename}]
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end,
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%% Prefix all the app targets to the code path so that inter-app compilation
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%% works properly
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update_code_path(Targets),
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%% Finally, apply the specified command to each target
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apply_commands(Targets, Commands);
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main(_) ->
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io:format("usage: rebar <command>...\n").
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%%
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%% Recursively find all the targets starting at a root directory
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%%
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find_targets(Root) ->
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{ok, Files} = file:list_dir(Root),
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find_targets(Files, Root, [], 1).
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find_targets([], _Root, Acc, _Depth) ->
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Acc;
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find_targets(_Files, _Root, Acc, 10) ->
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Acc;
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find_targets([F | Rest], Root, Acc, Depth) ->
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AbsName = filename:join([Root, F]),
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case target_type(AbsName) of
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undefined ->
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case filelib:is_dir(AbsName) of
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true ->
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{ok, SubFiles} = file:list_dir(AbsName),
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Acc2 = find_targets(SubFiles, AbsName, Acc, Depth+1);
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false ->
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Acc2 = Acc
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end;
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{Type, Filename} ->
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Acc2 = [{Type, AbsName, Filename} | Acc]
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end,
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find_targets(Rest, Root, Acc2, Depth).
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%%
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%% Determine the target type of a given file: app, rel or undefined
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%%
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target_type(AbsName) ->
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case rebar_app_utils:is_app_dir(AbsName) of
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{true, AppFile} ->
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{app, AppFile};
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false ->
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case rebar_rel_utils:is_rel_dir(AbsName) of
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true ->
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{rel, ""};
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false ->
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undefined
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end
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end.
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%%
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%% Given a command and target type, determine if the command is applicable
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%%
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valid_command(compile, app) -> true;
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valid_command(clean, _Any) -> true;
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valid_command(_, _) -> false.
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%%
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%% Add all application targets to the front of the code path
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%%
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update_code_path([]) ->
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ok;
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update_code_path([{app, Dir, _} | Rest]) ->
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EbinDir = filename:join([Dir, "ebin"]),
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true = code:add_patha(EbinDir),
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update_code_path(Rest);
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update_code_path([_ | Rest]) ->
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update_code_path(Rest).
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apply_commands(_Targets, []) ->
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ok;
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apply_commands(Targets, [CommandStr | Rest]) ->
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%% Convert the command into an atom for convenience
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Command = list_to_atom(CommandStr),
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%% Filter out all the targets, based on the specified command.
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FilteredTargets = [{Type, Dir, Filename} || {Type, Dir, Filename} <- Targets,
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valid_command(Command, Type) == true],
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case apply_command(FilteredTargets, Command) of
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ok ->
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apply_commands(Targets, Rest);
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Other ->
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Other
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end.
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apply_command([], _Command) ->
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ok;
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apply_command([{Type, Dir, File} | Rest], Command) ->
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ok = file:set_cwd(Dir),
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Config = rebar_config:new(Dir),
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%% Provide some info on where we are
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?CONSOLE("==> ~s (~s)\n", [filename:basename(Dir), Command]),
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%% Pull the list of modules that are associated with Type operations. Each module
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%% will be inspected for a function matching Command and if found, will execute that.
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Modules = rebar_config:get_modules(Config, Type),
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case catch(run_modules(Modules, Command, Config, File)) of
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ok ->
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apply_command(Rest, Command);
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Other ->
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?CONSOLE("~p failed while processing ~s: ~p", [Command, Dir, Other])
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end.
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run_modules([], _Command, _Config, _File) ->
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ok;
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run_modules([Module | Rest], Command, Config, File) ->
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case Module:Command(Config, File) of
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ok ->
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run_modules(Rest, Command, Config, File);
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{error, Reason} ->
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{error, Reason}
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end.
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