add scafolding

include/api.hrl

@@ -1,6 +1,6 @@
 -define(MAD,[compile/1,app/1,get/1,man/1,dia/1,release/1,resolve/1,clean/1,
              start/1,attach/1,stop/1,sh/1,deps/1,up/1,fetch/1,rsa/1,ecc/1,
-             static/1,eunit/1,strip/1]).
+             static/1,eunit/1,strip/1,scaffolding/1]).
 
 -type return() :: [] | true | false | {ok,any()} | {error,any()}.
 
@@ -24,3 +24,4 @@
 -spec static(list(string())) -> return().
 -spec eunit(list(string())) -> return().
 -spec strip(list(string())) -> return().
+-spec scaffolding(list(string())) -> return().

src/mad.erl

@@ -5,6 +5,7 @@
 -export([main/1]).
 
 main([])          -> halt(help());
+main(["sca"++_|P])-> mad_scaffolding:tpl(P);
 main(Params)      ->
 
     % filter valid (atoms) from invalid (unparsed lists) commands
@@ -76,5 +77,6 @@ help()            -> info("MAD Manage Dependencies ~s~n",[?VERSION]),
                      info("   cmd = app [nitro|zero] <name> | deps | clean | compile | strip~n"),
                      info("       | bundle [beam|script] <name> | man <html|check|groff> | repl~n"),
                      info("       | start | stop | attach | static <min> | get <repo> | up [name]~n"),
-                     info("       | <rsa|ecc> [ ca | client <name> | server <name> ]~n"),
+                     info("       | scaffolding tpl=<TplName> appid=<AppId> [VARS...]~n"),
+                     info("       | <rsa|ecc> [ ca | client <name> | server <name> ]~n"),                     
                      return(false).

src/mad_local.erl

@@ -22,3 +22,4 @@ up(Params)        -> mad_git:up(Params).
 fetch(Params)     -> mad_git:fetch(Params).
 eunit(Params)     -> mad_eunit:main_test(Params).
 sh(Params)        -> mad_repl:sh(Params).
+scaffolding(Params)-> mad_scaffolding:tpl(Params).

src/mad_mustache.erl

@@ -0,0 +1,213 @@
+%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+%% THE SOFTWARE.
+
+%% See the README at http://github.com/mojombo/mustache.erl for additional
+%% documentation and usage examples.
+
+-module(mad_mustache).  %% v0.1.0
+-author("Tom Preston-Werner").
+-export([compile/1, compile/2, render/1, render/2, render/3, get/2, get/3, escape/1, start/1]).
+
+-record(mstate, {mod = undefined,
+                 section_re = undefined,
+                 tag_re = undefined}).
+
+-define(MUSTACHE_STR, "mad_mustache").
+
+compile(Body) when is_list(Body) ->
+  State = #mstate{},
+  CompiledTemplate = pre_compile(Body, State),
+  % io:format("~p~n~n", [CompiledTemplate]),
+  % io:format(CompiledTemplate ++ "~n", []),
+  {ok, Tokens, _} = erl_scan:string(CompiledTemplate),
+  {ok, [Form]} = erl_parse:parse_exprs(Tokens),
+  Bindings = erl_eval:new_bindings(),
+  {value, Fun, _} = erl_eval:expr(Form, Bindings),
+  Fun;
+compile(Mod) ->
+  TemplatePath = template_path(Mod),
+  compile(Mod, TemplatePath).
+
+compile(Mod, File) ->
+  code:purge(Mod),
+  {module, _} = code:load_file(Mod),
+  {ok, TemplateBin} = file:read_file(File),
+  Template = re:replace(TemplateBin, "\"", "\\\\\"", [global, {return,list}]),
+  State = #mstate{mod = Mod},
+  CompiledTemplate = pre_compile(Template, State),
+  % io:format("~p~n~n", [CompiledTemplate]),
+  % io:format(CompiledTemplate ++ "~n", []),
+  {ok, Tokens, _} = erl_scan:string(CompiledTemplate),
+  {ok, [Form]} = erl_parse:parse_exprs(Tokens),
+  Bindings = erl_eval:new_bindings(),
+  {value, Fun, _} = erl_eval:expr(Form, Bindings),
+  Fun.
+
+render(Mod) ->
+  TemplatePath = template_path(Mod),
+  render(Mod, TemplatePath).
+
+render(Body, Ctx) when is_list(Body) ->
+  TFun = compile(Body),
+  render(undefined, TFun, Ctx);
+render(Mod, File) when is_list(File) ->
+  render(Mod, File, dict:new());
+render(Mod, CompiledTemplate) ->
+  render(Mod, CompiledTemplate, dict:new()).
+
+render(Mod, File, Ctx) when is_list(File) ->
+  CompiledTemplate = compile(Mod, File),
+  render(Mod, CompiledTemplate, Ctx);
+render(Mod, CompiledTemplate, Ctx) ->
+  Ctx2 = dict:store('__mod__', Mod, Ctx),
+  lists:flatten(CompiledTemplate(Ctx2)).
+
+pre_compile(T, State) ->
+  SectionRE = "\{\{\#([^\}]*)}}\s*(.+?){{\/\\1\}\}\s*",
+  {ok, CompiledSectionRE} = re:compile(SectionRE, [dotall]),
+  TagRE = "\{\{(#|=|!|<|>|\{)?(.+?)\\1?\}\}+",
+  {ok, CompiledTagRE} = re:compile(TagRE, [dotall]),
+  State2 = State#mstate{section_re = CompiledSectionRE, tag_re = CompiledTagRE},
+  "fun(Ctx) -> " ++
+    "CFun = fun(A, B) -> A end, " ++
+    compiler(T, State2) ++ " end.".
+
+compiler(T, State) ->
+  Res = re:run(T, State#mstate.section_re),
+  case Res of
+    {match, [{M0, M1}, {N0, N1}, {C0, C1}]} ->
+      Front = string:substr(T, 1, M0),
+      Back = string:substr(T, M0 + M1 + 1),
+      Name = string:substr(T, N0 + 1, N1),
+      Content = string:substr(T, C0 + 1, C1),
+      "[" ++ compile_tags(Front, State) ++
+        " | [" ++ compile_section(Name, Content, State) ++
+        " | [" ++ compiler(Back, State) ++ "]]]";
+    nomatch ->
+      compile_tags(T, State)
+  end.
+
+compile_section(Name, Content, State) ->
+  Mod = State#mstate.mod,
+  Result = compiler(Content, State),
+  "fun() -> " ++
+    "case " ++ ?MUSTACHE_STR ++ ":get(" ++ Name ++ ", Ctx, " ++ atom_to_list(Mod) ++ ") of " ++
+      "\"true\" -> " ++
+        Result ++ "; " ++
+      "\"false\" -> " ++
+        "[]; " ++
+      "List when is_list(List) -> " ++
+        "[fun(Ctx) -> " ++ Result ++ " end(dict:merge(CFun, SubCtx, Ctx)) || SubCtx <- List]; " ++
+      "Else -> " ++
+        "throw({template, io_lib:format(\"Bad context for ~p: ~p\", [" ++ Name ++ ", Else])}) " ++
+    "end " ++
+  "end()".
+
+compile_tags(T, State) ->
+  Res = re:run(T, State#mstate.tag_re),
+  case Res of
+    {match, [{M0, M1}, K, {C0, C1}]} ->
+      Front = string:substr(T, 1, M0),
+      Back = string:substr(T, M0 + M1 + 1),
+      Content = string:substr(T, C0 + 1, C1),
+      Kind = tag_kind(T, K),
+      Result = compile_tag(Kind, Content, State),
+      "[\"" ++ Front ++
+        "\" | [" ++ Result ++
+        " | " ++ compile_tags(Back, State) ++ "]]";
+    nomatch ->
+      "[\"" ++ T ++ "\"]"
+  end.
+
+tag_kind(_T, {-1, 0}) ->
+  none;
+tag_kind(T, {K0, K1}) ->
+  string:substr(T, K0 + 1, K1).
+
+compile_tag(none, Content, State) ->
+  Mod = State#mstate.mod,
+  ?MUSTACHE_STR ++ ":escape(" ++ ?MUSTACHE_STR ++ ":get(" ++ Content ++ ", Ctx, " ++ atom_to_list(Mod) ++ "))";
+compile_tag("{", Content, State) ->
+  Mod = State#mstate.mod,
+  ?MUSTACHE_STR ++ ":get(" ++ Content ++ ", Ctx, " ++ atom_to_list(Mod) ++ ")";
+compile_tag("!", _Content, _State) ->
+  "[]".
+
+template_dir(Mod) ->
+  DefaultDirPath = filename:dirname(code:which(Mod)),
+  case application:get_env(mustache, templates_dir) of
+    {ok, DirPath} when is_list(DirPath) ->
+      case filelib:ensure_dir(DirPath) of
+        ok -> DirPath;
+        _  -> DefaultDirPath
+      end;
+    _ ->
+      DefaultDirPath
+  end.
+template_path(Mod) ->
+  DirPath = template_dir(Mod),
+  Basename = atom_to_list(Mod),
+  filename:join(DirPath, Basename ++ ".mustache").
+
+get(Key, Ctx) when is_list(Key) ->
+  {ok, Mod} = dict:find('__mod__', Ctx),
+  get(list_to_atom(Key), Ctx, Mod);
+get(Key, Ctx) ->
+  {ok, Mod} = dict:find('__mod__', Ctx),
+  get(Key, Ctx, Mod).
+
+get(Key, Ctx, Mod) when is_list(Key) ->
+  get(list_to_atom(Key), Ctx, Mod);
+get(Key, Ctx, Mod) ->
+  case dict:find(Key, Ctx) of
+    {ok, Val} ->
+      % io:format("From Ctx {~p, ~p}~n", [Key, Val]),
+      to_s(Val);
+    error ->
+      case erlang:function_exported(Mod, Key, 1) of
+        true ->
+          Val = to_s(Mod:Key(Ctx)),
+          % io:format("From Mod/1 {~p, ~p}~n", [Key, Val]),
+          Val;
+        false ->
+          case erlang:function_exported(Mod, Key, 0) of
+            true ->
+              Val = to_s(Mod:Key()),
+              % io:format("From Mod/0 {~p, ~p}~n", [Key, Val]),
+              Val;
+            false ->
+              []
+          end
+      end
+  end.
+
+to_s(Val) when is_integer(Val) ->
+  integer_to_list(Val);
+to_s(Val) when is_float(Val) ->
+  io_lib:format("~.2f", [Val]);
+to_s(Val) when is_atom(Val) ->
+  atom_to_list(Val);
+to_s(Val) ->
+  Val.
+
+escape(HTML) ->
+  escape(HTML, []).
+
+escape([], Acc) ->
+  lists:reverse(Acc);
+escape(["<" | Rest], Acc) ->
+  escape(Rest, lists:reverse("&lt;", Acc));
+escape([">" | Rest], Acc) ->
+  escape(Rest, lists:reverse("&gt;", Acc));
+escape(["&" | Rest], Acc) ->
+  escape(Rest, lists:reverse("&amp;", Acc));
+escape([X | Rest], Acc) ->
+  escape(Rest, [X | Acc]).
+
+%%---------------------------------------------------------------------------
+
+start([T]) ->
+  Out = render(list_to_atom(T)),
+  io:format(Out ++ "~n", []).