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Add option to show available commands

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Implement new option -c/--commands to print available
commands and its variables.
This commit is contained in:
Tuncer Ayaz 2010-03-08 21:14:06 +01:00
parent 218051618f
commit ebfb1dc40d
1 changed files with 73 additions and 28 deletions
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101
src/rebar_core.erl
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@ -85,32 +85,25 @@ parse_args(Args) ->
%% Parse getopt options
OptSpecList = option_spec_list(),
case getopt:parse(OptSpecList, Args) of
{ok, {_Options, []}} ->
%% no command to run specified
help(),
halt(1);
{ok, {Options, NonOptArgs}} ->
case proplists:get_bool(help, Options) of
true ->
%% display help
help(),
halt(0);
false ->
%% Set global variables based on getopt options
set_global_flag(Options, verbose),
set_global_flag(Options, force),
DefJobs = rebar_config:get_jobs(),
case proplists:get_value(jobs, Options, DefJobs) of
DefJobs ->
ok;
Jobs ->
rebar_config:set_global(jobs, Jobs)
end,
%% Check options and maybe halt execution
{ok, continue} = print_help_maybe_halt(Options, NonOptArgs),
%% Set global variables based on getopt options
set_global_flag(Options, verbose),
set_global_flag(Options, force),
DefJobs = rebar_config:get_jobs(),
case proplists:get_value(jobs, Options, DefJobs) of
DefJobs ->
ok;
Jobs ->
rebar_config:set_global(jobs, Jobs)
end,
%% Filter all the flags (i.e. strings of form key=value) from the
%% command line arguments. What's left will be the commands to run.
filter_flags(NonOptArgs, []);
%% Filter all the flags (i.e. strings of form key=value) from the
%% command line arguments. What's left will be the commands to run.
filter_flags(NonOptArgs, [])
end;
{error, {Reason, Data}} ->
?ERROR("Error: ~s ~p~n~n", [Reason, Data]),
help(),
@ -129,6 +122,31 @@ set_global_flag(Options, Flag) ->
end,
rebar_config:set_global(Flag, Value).
%%
%% print help
%%
print_help_maybe_halt(Options, NonOptArgs) ->
case proplists:get_bool(help, Options) of
true ->
help(),
halt(0);
false ->
case proplists:get_bool(commands, Options) of
true ->
commands(),
halt(0);
false ->
case NonOptArgs of
[] ->
io:format("No command to run specified!~n"),
help(),
halt(1);
_ ->
{ok, continue}
end
end
end.
%%
%% print help/usage string
%%
@ -139,6 +157,32 @@ help() ->
[{"var=value", "rebar global variables (e.g. force=1)"},
{"command", "Command to run (e.g. compile)"}]).
%%
%% print known commands
%%
commands() ->
io:format(<<
"analyze Analyze with Dialyzer~n"
"build_plt Build Dialyzer PLT~n"
"check_plt Check Dialyzer PLT~n"
"~n"
"clean Clean~n"
"compile Compile sources~n"
"~n"
"create template= [var=foo,...] Create skel based on template and vars~n"
"create-app Create simple app skel~n"
"create-node Create simple node skel~n"
"~n"
"generate [dump_spec=0/1] Build release with reltool~n"
"install [target=] Install build into target~n"
"~n"
"eunit [suite=foo] Run eunit [test/foo_tests.erl] tests~n"
"~n"
"int_test [suite=] [case=] Run ct suites in ./int_test~n"
"perf_test [suite=] [case=] Run ct suites in ./perf_test~n"
"test [suite=] [case=] Run ct suites in ./test~n"
>>).
%%
%% options accepted via getopt
%%
@ -149,10 +193,11 @@ option_spec_list() ->
[Jobs]),
[
%% {Name, ShortOpt, LongOpt, ArgSpec, HelpMsg}
{help, $h, "help", undefined, "Show the program options"},
{verbose, $v, "verbose", undefined, "Be verbose about what gets done"},
{force, $f, "force", undefined, "Force"},
{jobs, $j, "jobs", integer, JobsHelp}
{help, $h, "help", undefined, "Show the program options"},
{commands, $c, "commands", undefined, "Show available commands"},
{verbose, $v, "verbose", undefined, "Be verbose about what gets done"},
{force, $f, "force", undefined, "Force"},
{jobs, $j, "jobs", integer, JobsHelp}
].
%%