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Diffstat (limited to 'src/rebar_mustache.erl')
| -rw-r--r-- | src/rebar_mustache.erl | 296 |
1 files changed, 0 insertions, 296 deletions
diff --git a/src/rebar_mustache.erl b/src/rebar_mustache.erl deleted file mode 100644 index af8a342..0000000 --- a/src/rebar_mustache.erl +++ /dev/null @@ -1,296 +0,0 @@ -%% The MIT License (MIT) -%% -%% Copyright (c) 2015 Hinagiku Soranoba -%% -%% 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. -%% -%% @doc Mustache template engine for Erlang/OTP. --module(rebar_mustache). - -%%---------------------------------------------------------------------------------------------------------------------- -%% Exported API -%%---------------------------------------------------------------------------------------------------------------------- --export([ - render/2, - parse_binary/1, - parse_file/1, - compile/2 - ]). - --export_type([ - template/0, - data/0 - ]). - -%%---------------------------------------------------------------------------------------------------------------------- -%% Defines & Records & Types -%%---------------------------------------------------------------------------------------------------------------------- - --define(PARSE_ERROR, incorrect_format). --define(FILE_ERROR, file_not_found). --define(COND(Cond, TValue, FValue), - case Cond of true -> TValue; false -> FValue end). - --type key() :: binary(). --type tag() :: {n, key()} | - {'&', key()} | - {'#', key(), [tag()], Source :: binary()} | - {'^', key(), [tag()]} | - binary(). - --record(state, - { - dirname = <<>> :: file:filename_all(), - start = <<"{{">> :: binary(), - stop = <<"}}">> :: binary() - }). --type state() :: #state{}. - --record(?MODULE, - { - data :: [tag()] - }). - --opaque template() :: #?MODULE{}. -%% @see parse_binary/1 -%% @see parse_file/1 --ifdef(namespaced_types). --type data() :: #{string() => data() | iodata() | fun((data(), function()) -> iodata())}. --else. --type data() :: dict(). --endif. -%% @see render/2 -%% @see compile/2 --type partial() :: {partial, {state(), EndTag :: binary(), LastTagSize :: non_neg_integer(), Rest :: binary(), [tag()]}}. - -%%---------------------------------------------------------------------------------------------------------------------- -%% Exported Functions -%%---------------------------------------------------------------------------------------------------------------------- - -%% @equiv compile(parse_binary(Bin), Map) --spec render(binary(), data()) -> binary(). -render(Bin, Map) -> - compile(parse_binary(Bin), Map). - -%% @doc Create a {@link template/0} from a binary. --spec parse_binary(binary()) -> template(). -parse_binary(Bin) when is_binary(Bin) -> - parse_binary_impl(#state{}, Bin). - -%% @doc Create a {@link template/0} from a file. --spec parse_file(file:filename()) -> template(). -parse_file(Filename) -> - case file:read_file(Filename) of - {ok, Bin} -> parse_binary_impl(#state{dirname = filename:dirname(Filename)}, Bin); - _ -> error(?FILE_ERROR, [Filename]) - end. - -%% @doc Embed the data in the template. --spec compile(template(), data()) -> binary(). -compile(#?MODULE{data = Tags}, Map) -> - ec_cnv:to_binary(lists:reverse(compile_impl(Tags, Map, []))). - -%%---------------------------------------------------------------------------------------------------------------------- -%% Internal Function -%%---------------------------------------------------------------------------------------------------------------------- - -%% @doc {@link compile/2} -%% -%% ATTENTION: The result is a list that is inverted. --spec compile_impl(Template :: [tag()], data(), Result :: iodata()) -> iodata(). -compile_impl([], _, Result) -> - Result; -compile_impl([{n, Key} | T], Map, Result) -> - compile_impl(T, Map, [escape(to_binary(dict_get(binary_to_list(Key), Map, <<>>))) | Result]); -compile_impl([{'&', Key} | T], Map, Result) -> - compile_impl(T, Map, [to_binary(dict_get(binary_to_list(Key), Map, <<>>)) | Result]); -compile_impl([{'#', Key, Tags, Source} | T], Map, Result) -> - Value = dict_get(binary_to_list(Key), Map, undefined), - if - is_list(Value) -> compile_impl(T, Map, lists:foldl(fun(X, Acc) -> compile_impl(Tags, X, Acc) end, - Result, Value)); - Value =:= false; Value =:= undefined -> compile_impl(T, Map, Result); - is_function(Value, 2) -> compile_impl(T, Map, [Value(Source, fun(Text) -> render(Text, Map) end) | Result]); - %is_dict(Value) -> compile_impl(T, Map, compile_impl(Tags, Value, Result)); - true -> compile_impl(T, Map, compile_impl(Tags, Map, Result)) - end; -compile_impl([{'^', Key, Tags} | T], Map, Result) -> - Value = dict_get(binary_to_list(Key), Map, undefined), - case Value =:= undefined orelse Value =:= [] orelse Value =:= false of - true -> compile_impl(T, Map, compile_impl(Tags, Map, Result)); - false -> compile_impl(T, Map, Result) - end; -compile_impl([Bin | T], Map, Result) -> - compile_impl(T, Map, [Bin | Result]). - -%% @see parse_binary/1 --spec parse_binary_impl(state(), Input :: binary()) -> template(). -parse_binary_impl(State, Input) -> - #?MODULE{data = parse(State, Input)}. - -%% @doc Analyze the syntax of the mustache. --spec parse(state(), binary()) -> [tag()]. -parse(State, Bin) -> - case parse1(State, Bin, []) of - {partial, _} -> error(?PARSE_ERROR); - {_, Tags} -> lists:reverse(Tags) - end. - -%% @doc Part of the `parse/1' -%% -%% ATTENTION: The result is a list that is inverted. --spec parse1(state(), Input :: binary(), Result :: [tag()]) -> {state(), [tag()]} | partial(). -parse1(#state{start = Start, stop = Stop} = State, Bin, Result) -> - case binary:split(Bin, Start) of - [] -> {State, Result}; - [B1] -> {State, [B1 | Result]}; - [B1, <<"{", B2/binary>>] -> parse2(State, binary:split(B2, <<"}", Stop/binary>>), [B1 | Result]); - [B1, B2] -> parse3(State, binary:split(B2, Stop), [B1 | Result]) - end. - -%% @doc Part of the `parse/1' -%% -%% ATTENTION: The result is a list that is inverted. -parse2(State, [B1, B2], Result) -> - parse1(State, B2, [{'&', remove_space_from_edge(B1)} | Result]); -parse2(_, _, _) -> - error(?PARSE_ERROR). - -%% @doc Part of the `parse/1' -%% -%% ATTENTION: The result is a list that is inverted. -parse3(State, [B1, B2], Result) -> - case remove_space_from_head(B1) of - <<"&", Tag/binary>> -> - parse1(State, B2, [{'&', remove_space_from_edge(Tag)} | Result]); - <<T, Tag/binary>> when T =:= $#; T =:= $^ -> - parse_loop(State, ?COND(T =:= $#, '#', '^'), remove_space_from_edge(Tag), B2, Result); - <<"=", Tag0/binary>> -> - Tag1 = remove_space_from_tail(Tag0), - Size = byte_size(Tag1) - 1, - case Size >= 0 andalso Tag1 of - <<Tag2:Size/binary, "=">> -> parse_delimiter(State, Tag2, B2, Result); - _ -> error(?PARSE_ERROR) - end; - <<"!", _/binary>> -> - parse1(State, B2, Result); - <<"/", Tag/binary>> -> - {partial, {State, remove_space_from_edge(Tag), byte_size(B1) + 4, B2, Result}}; - <<">", Tag/binary>> -> - parse_jump(State, remove_space_from_edge(Tag), B2, Result); - Tag -> - parse1(State, B2, [{n, remove_space_from_tail(Tag)} | Result]) - end; -parse3(_, _, _) -> - error(?PARSE_ERROR). - -%% @doc Loop processing part of the `parse/1' -%% -%% `{{# Tag}}' or `{{^ Tag}}' corresponds to this. --spec parse_loop(state(), '#' | '^', Tag :: binary(), Input :: binary(), Result :: [tag()]) -> [tag()] | partial(). -parse_loop(State0, Mark, Tag, Input, Result0) -> - case parse1(State0, Input, []) of - {partial, {State, Tag, LastTagSize, Rest, Result1}} when is_list(Result1) -> - case Mark of - '#' -> Source = binary:part(Input, 0, byte_size(Input) - byte_size(Rest) - LastTagSize), - parse1(State, Rest, [{'#', Tag, lists:reverse(Result1), Source} | Result0]); - '^' -> parse1(State, Rest, [{'^', Tag, lists:reverse(Result1)} | Result0]) - end; - _ -> - error(?PARSE_ERROR) - end. - -%% @doc Partial part of the `parse/1' --spec parse_jump(state(), Tag :: binary(), NextBin :: binary(), Result :: [tag()]) -> [tag()] | partial(). -parse_jump(#state{dirname = Dirname} = State0, Tag, NextBin, Result0) -> - Filename0 = <<Tag/binary, ".mustache">>, - Filename = filename:join(?COND(Dirname =:= <<>>, [Filename0], [Dirname, Filename0])), - case file:read_file(Filename) of - {ok, Bin} -> - case parse1(State0, Bin, Result0) of - {partial, _} -> error(?PARSE_ERROR); - {State, Result} -> parse1(State, NextBin, Result) - end; - _ -> - error(?FILE_ERROR, [Filename]) - end. - -%% @doc Update delimiter part of the `parse/1' -%% -%% Parse_BinaryDelimiterBin :: e.g. `{{=%% %%=}}' -> `%% %%' --spec parse_delimiter(state(), Parse_BinaryDelimiterBin :: binary(), NextBin :: binary(), Result :: [tag()]) -> [tag()] | partial(). -parse_delimiter(State0, Parse_BinaryDelimiterBin, NextBin, Result) -> - case binary:match(Parse_BinaryDelimiterBin, <<"=">>) of - nomatch -> - case [X || X <- binary:split(Parse_BinaryDelimiterBin, <<" ">>, [global]), X =/= <<>>] of - [Start, Stop] -> parse1(State0#state{start = Start, stop = Stop}, NextBin, Result); - _ -> error(?PARSE_ERROR) - end; - _ -> - error(?PARSE_ERROR) - end. - -%% @doc Remove the space from the edge. --spec remove_space_from_edge(binary()) -> binary(). -remove_space_from_edge(Bin) -> - remove_space_from_tail(remove_space_from_head(Bin)). - -%% @doc Remove the space from the head. --spec remove_space_from_head(binary()) -> binary(). -remove_space_from_head(<<" ", Rest/binary>>) -> remove_space_from_head(Rest); -remove_space_from_head(Bin) -> Bin. - -%% @doc Remove the space from the tail. --spec remove_space_from_tail(binary()) -> binary(). -remove_space_from_tail(<<>>) -> <<>>; -remove_space_from_tail(Bin) -> - PosList = binary:matches(Bin, <<" ">>), - LastPos = remove_space_from_tail_impl(lists:reverse(PosList), byte_size(Bin)), - binary:part(Bin, 0, LastPos). - -%% @see remove_space_from_tail/1 --spec remove_space_from_tail_impl([{non_neg_integer(), pos_integer()}], non_neg_integer()) -> non_neg_integer(). -remove_space_from_tail_impl([{X, Y} | T], Size) when Size =:= X + Y -> - remove_space_from_tail_impl(T, X); -remove_space_from_tail_impl(_, Size) -> - Size. - -%% @doc Number to binary --spec to_binary(number() | binary() | string()) -> binary() | string(). -to_binary(Integer) when is_integer(Integer) -> - ec_cnv:to_binary(Integer); -to_binary(Float) when is_float(Float) -> - io_lib:format("~p", [Float]); -to_binary(X) -> - X. - -%% @doc HTML Escape --spec escape(iodata()) -> binary(). -escape(IoData) -> - Bin = ec_cnv:to_binary(IoData), - << <<(escape_char(X))/binary>> || <<X:8>> <= Bin >>. - -%% @see escape/1 --spec escape_char(0..16#FFFF) -> binary(). -escape_char($<) -> <<"<">>; -escape_char($>) -> <<">">>; -escape_char($&) -> <<"&">>; -escape_char($") -> <<""">>; -escape_char($') -> <<"'">>; -escape_char(C) -> <<C:8>>. - -dict_get(Key, Dict, Default) -> - case dict:find(ec_cnv:to_atom(Key), Dict) of - {ok, Value} -> - Value; - error -> - Default - end. |