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Diffstat (limited to 'src/rebar_mustache.erl')
| -rw-r--r-- | src/rebar_mustache.erl | 230 |
1 files changed, 0 insertions, 230 deletions
diff --git a/src/rebar_mustache.erl b/src/rebar_mustache.erl deleted file mode 100644 index 9016c0f..0000000 --- a/src/rebar_mustache.erl +++ /dev/null @@ -1,230 +0,0 @@ -%% The MIT License -%% -%% Copyright (c) 2009 Tom Preston-Werner <tom@mojombo.com> -%% -%% Permission is hereby granted, free of charge, to any person obtaining a copy -%% of this software and associated documentation files (the "Software"), to deal -%% in the Software without restriction, including without limitation the rights -%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -%% copies of the Software, and to permit persons to whom the Software is -%% furnished to do so, subject to the following conditions: -%% -%% The above copyright notice and this permission notice shall be included in -%% all copies or substantial portions of the Software. -%% -%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -%% 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(rebar_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, "rebar_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("<", Acc)); -escape([">" | Rest], Acc) -> - escape(Rest, lists:reverse(">", Acc)); -escape(["&" | Rest], Acc) -> - escape(Rest, lists:reverse("&", Acc)); -escape([X | Rest], Acc) -> - escape(Rest, [X | Acc]). - -%%--------------------------------------------------------------------------- - -start([T]) -> - Out = render(list_to_atom(T)), - io:format(Out ++ "~n", []). |