Merge pull request #379 from tsloughter/rm_erlydtl

Remove erlydtl and replace with mustache

28 files changed, 295 insertions, 475 deletions

diff --git a/bootstrap b/bootstrap
index 9799647..a96483b 100755
--- a/bootstrap
+++ b/bootstrap
@@ -26,7 +26,7 @@ main(_Args) ->
     {ok, State} = rebar3:run(["compile"]),
     reset_env(),
     os:putenv("REBAR_PROFILE", ""),
-    %% Build erlydtl files (a hook on compile in the default profile) and escript file
+
     DepsPaths = rebar_state:code_paths(State, all_deps),
     code:add_pathsa(DepsPaths),
 
@@ -112,16 +112,15 @@ bootstrap_rebar3() ->
     code:add_patha(filename:absname("_build/default/lib/rebar/ebin")).
 
 setup_env() ->
-    %% We don't need or want erlydtl or relx providers loaded yet
+    %% We don't need or want relx providers loaded yet
     application:load(rebar),
     {ok, Providers} = application:get_env(rebar, providers),
-    Providers1 = Providers -- [rebar_prv_erlydtl_compiler,
-                               rebar_prv_release,
+    Providers1 = Providers -- [rebar_prv_release,
                                rebar_prv_tar],
     application:set_env(rebar, providers, Providers1).
 
 reset_env() ->
-    %% Reset the env so we get all providers and can build erlydtl files
+    %% Reset the env so we get all providers
     application:unset_env(rebar, providers),
     application:unload(rebar),
     application:load(rebar).
diff --git a/priv/templates/LICENSE.dtl b/priv/templates/LICENSE
index 41588ab..41588ab 100644
--- a/priv/templates/LICENSE.dtl
+++ b/priv/templates/LICENSE
diff --git a/priv/templates/Makefile.dtl b/priv/templates/Makefile
index d3c3767..d3c3767 100644
--- a/priv/templates/Makefile.dtl
+++ b/priv/templates/Makefile
diff --git a/priv/templates/README.md.dtl b/priv/templates/README.md
index 5507536..5507536 100644
--- a/priv/templates/README.md.dtl
+++ b/priv/templates/README.md
diff --git a/priv/templates/app.erl.dtl b/priv/templates/app.erl
index 83eb9a3..83eb9a3 100644
--- a/priv/templates/app.erl.dtl
+++ b/priv/templates/app.erl
diff --git a/priv/templates/app.template b/priv/templates/app.template
index b17e30c..4087e5e 100644
--- a/priv/templates/app.template
+++ b/priv/templates/app.template
@@ -3,10 +3,10 @@
     {name, "mylib", "Name of the OTP application"},
     {desc, "An OTP application", "Short description of the app"}
 ]}.
-{template, "app.erl.dtl", "{{name}}/src/{{name}}_app.erl"}.
-{template, "sup.erl.dtl", "{{name}}/src/{{name}}_sup.erl"}.
-{template, "otp_app.app.src.dtl", "{{name}}/src/{{name}}.app.src"}.
-{template, "rebar.config.dtl", "{{name}}/rebar.config"}.
-{template, "gitignore.dtl", "{{name}}/.gitignore"}.
-{template, "LICENSE.dtl", "{{name}}/LICENSE"}.
-{template, "README.md.dtl", "{{name}}/README.md"}.
+{template, "app.erl", "{{name}}/src/{{name}}_app.erl"}.
+{template, "sup.erl", "{{name}}/src/{{name}}_sup.erl"}.
+{template, "otp_app.app.src", "{{name}}/src/{{name}}.app.src"}.
+{template, "rebar.config", "{{name}}/rebar.config"}.
+{template, "gitignore", "{{name}}/.gitignore"}.
+{template, "LICENSE", "{{name}}/LICENSE"}.
+{template, "README.md", "{{name}}/README.md"}.
diff --git a/priv/templates/cmake.template b/priv/templates/cmake.template
index b3f23e8..2874c8a 100644
--- a/priv/templates/cmake.template
+++ b/priv/templates/cmake.template
@@ -1,2 +1,2 @@
 {description, "Makefile for building C/C++ in c_src"}.
-{template, "Makefile.dtl", "c_src/Makefile"}.
+{template, "Makefile", "c_src/Makefile"}.
diff --git a/priv/templates/gitignore.dtl b/priv/templates/gitignore
index 40a1d4f..40a1d4f 100644
--- a/priv/templates/gitignore.dtl
+++ b/priv/templates/gitignore
diff --git a/priv/templates/lib.template b/priv/templates/lib.template
index 4b9a75d..cbb3672 100644
--- a/priv/templates/lib.template
+++ b/priv/templates/lib.template
@@ -3,9 +3,9 @@
     {name, "mylib", "Name of the OTP library application"},
     {desc, "An OTP library", "Short description of the app"}
 ]}.
-{template, "mod.erl.dtl", "{{name}}/src/{{name}}.erl"}.
-{template, "otp_lib.app.src.dtl", "{{name}}/src/{{name}}.app.src"}.
-{template, "rebar.config.dtl", "{{name}}/rebar.config"}.
-{template, "gitignore.dtl", "{{name}}/.gitignore"}.
-{template, "LICENSE.dtl", "{{name}}/LICENSE"}.
-{template, "README.md.dtl", "{{name}}/README.md"}.
+{template, "mod.erl", "{{name}}/src/{{name}}.erl"}.
+{template, "otp_lib.app.src", "{{name}}/src/{{name}}.app.src"}.
+{template, "rebar.config", "{{name}}/rebar.config"}.
+{template, "gitignore", "{{name}}/.gitignore"}.
+{template, "LICENSE", "{{name}}/LICENSE"}.
+{template, "README.md", "{{name}}/README.md"}.
diff --git a/priv/templates/mod.erl.dtl b/priv/templates/mod.erl
index 2f5e09e..2f5e09e 100644
--- a/priv/templates/mod.erl.dtl
+++ b/priv/templates/mod.erl
diff --git a/priv/templates/otp_app.app.src.dtl b/priv/templates/otp_app.app.src
index 5188f56..5188f56 100644
--- a/priv/templates/otp_app.app.src.dtl
+++ b/priv/templates/otp_app.app.src
diff --git a/priv/templates/otp_lib.app.src.dtl b/priv/templates/otp_lib.app.src
index 3adefeb..3adefeb 100644
--- a/priv/templates/otp_lib.app.src.dtl
+++ b/priv/templates/otp_lib.app.src
diff --git a/priv/templates/plugin.erl.dtl b/priv/templates/plugin.erl
index abf4648..abf4648 100644
--- a/priv/templates/plugin.erl.dtl
+++ b/priv/templates/plugin.erl
diff --git a/priv/templates/plugin.template b/priv/templates/plugin.template
index 3419191..0181bd2 100644
--- a/priv/templates/plugin.template
+++ b/priv/templates/plugin.template
@@ -3,9 +3,9 @@
     {name, "myplugin", "Name of the plugin"},
     {desc, "A rebar plugin", "Short description of the plugin's purpose"}
 ]}.
-{template, "plugin.erl.dtl", "{{name}}/src/{{name}}.erl"}.
-{template, "otp_lib.app.src.dtl", "{{name}}/src/{{name}}.app.src"}.
-{template, "rebar.config.dtl", "{{name}}/rebar.config"}.
-{template, "gitignore.dtl", "{{name}}/.gitignore"}.
-{template, "LICENSE.dtl", "{{name}}/LICENSE"}.
-{template, "plugin_README.md.dtl", "{{name}}/README.md"}.
+{template, "plugin.erl", "{{name}}/src/{{name}}.erl"}.
+{template, "otp_lib.app.src", "{{name}}/src/{{name}}.app.src"}.
+{template, "rebar.config", "{{name}}/rebar.config"}.
+{template, "gitignore", "{{name}}/.gitignore"}.
+{template, "LICENSE", "{{name}}/LICENSE"}.
+{template, "plugin_README.md", "{{name}}/README.md"}.
diff --git a/priv/templates/plugin_README.md.dtl b/priv/templates/plugin_README.md
index 7f9ba84..7f9ba84 100644
--- a/priv/templates/plugin_README.md.dtl
+++ b/priv/templates/plugin_README.md
diff --git a/priv/templates/rebar.config.dtl b/priv/templates/rebar.config
index f618f3e..f618f3e 100644
--- a/priv/templates/rebar.config.dtl
+++ b/priv/templates/rebar.config
diff --git a/priv/templates/release.template b/priv/templates/release.template
index e350130..a15d163 100644
--- a/priv/templates/release.template
+++ b/priv/templates/release.template
@@ -3,12 +3,12 @@
     {name, "myapp", "Name of the OTP release. An app with this name will also be created."},
     {desc, "An OTP application", "Short description of the release's main app's purpose"}
 ]}.
-{template, "app.erl.dtl", "{{name}}/{{apps_dir}}/{{name}}/src/{{name}}_app.erl"}.
-{template, "sup.erl.dtl", "{{name}}/{{apps_dir}}/{{name}}/src/{{name}}_sup.erl"}.
-{template, "otp_app.app.src.dtl", "{{name}}/{{apps_dir}}/{{name}}/src/{{name}}.app.src"}.
-{template, "relx_rebar.config.dtl", "{{name}}/rebar.config"}.
-{template, "sys.config.dtl", "{{name}}/config/sys.config"}.
-{template, "vm.args.dtl", "{{name}}/config/vm.args"}.
-{template, "gitignore.dtl", "{{name}}/.gitignore"}.
-{template, "LICENSE.dtl", "{{name}}/LICENSE"}.
-{template, "README.md.dtl", "{{name}}/README.md"}.
+{template, "app.erl", "{{name}}/{{apps_dir}}/{{name}}/src/{{name}}_app.erl"}.
+{template, "sup.erl", "{{name}}/{{apps_dir}}/{{name}}/src/{{name}}_sup.erl"}.
+{template, "otp_app.app.src", "{{name}}/{{apps_dir}}/{{name}}/src/{{name}}.app.src"}.
+{template, "relx_rebar.config", "{{name}}/rebar.config"}.
+{template, "sys.config", "{{name}}/config/sys.config"}.
+{template, "vm.args", "{{name}}/config/vm.args"}.
+{template, "gitignore", "{{name}}/.gitignore"}.
+{template, "LICENSE", "{{name}}/LICENSE"}.
+{template, "README.md", "{{name}}/README.md"}.
diff --git a/priv/templates/relx_rebar.config.dtl b/priv/templates/relx_rebar.config
index e7505eb..e7505eb 100644
--- a/priv/templates/relx_rebar.config.dtl
+++ b/priv/templates/relx_rebar.config
diff --git a/priv/templates/sup.erl.dtl b/priv/templates/sup.erl
index a2e7209..a2e7209 100644
--- a/priv/templates/sup.erl.dtl
+++ b/priv/templates/sup.erl
diff --git a/priv/templates/sys.config.dtl b/priv/templates/sys.config
index 7fd6bcb..7fd6bcb 100644
--- a/priv/templates/sys.config.dtl
+++ b/priv/templates/sys.config
diff --git a/priv/templates/vm.args.dtl b/priv/templates/vm.args
index a8a43f0..a8a43f0 100644
--- a/priv/templates/vm.args.dtl
+++ b/priv/templates/vm.args
diff --git a/rebar.config b/rebar.config
index 83da0e5..89acac7 100644
--- a/rebar.config
+++ b/rebar.config
@@ -8,18 +8,15 @@
        {providers, "",
         {git, "https://github.com/tsloughter/providers.git",
          {tag, "v1.3.1"}}},
-       {erlydtl, "",
-        {git, "https://github.com/erlydtl/erlydtl.git",
-         {branch, "master"}}},
        {relx, "",
-        {git, "https://github.com/erlware/relx.git",
-         {branch, "master"}}},
+        {git, "https://github.com/tsloughter/relx.git",
+         {branch, "mustache"}}},
        {getopt, "",
         {git, "https://github.com/jcomellas/getopt.git",
          {branch, "master"}}}]}.
 
 {escript_incl_apps,
- [getopt, merl, erlydtl, erlware_commons, relx,  providers, rebar]}.
+ [getopt, erlware_commons, relx,  providers, rebar]}.
 {escript_top_level_app, rebar}.
 {escript_name, rebar3}.
 {escript_emu_args, "%%! +sbtu +A0\n"}.
@@ -34,12 +31,7 @@
   debug_info,
   warnings_as_errors]}.
 
-{erlydtl_opts, [{doc_root, "priv/templates"},
-                {compiler_options, [report, return, debug_info]}]}.
-
-{dialyzer_plt_apps, [common_test, dialyzer, erlydtl, eunit, snmp]}.
-
-{provider_hooks, [{post, [{compile, {erlydtl, compile}}]}]}.
+{dialyzer_plt_apps, [common_test, dialyzer, eunit, snmp]}.
 
 %% Profiles
 {profiles, [{test,
@@ -50,21 +42,8 @@
             },
 
             %% We don't want erlydtl to attempt to run on the first compile pass to bootstrap
-            {bootstrap, [{overrides, [{override, relx, [{provider_hooks, [{post, []}]}]}]},
-                         {provider_hooks, [{post, []}]}]}
+            {bootstrap, []}
            ]}.
 
 %% Overrides
-{overrides, [{override, erlware_commons, [{plugins, []}]},
-             {override, merl, [{pre_hooks, [{"(linux|darwin|solaris)", compile, "make -C \"$REBAR_DEPS_DIR/merl\" all -W test"},
-                                            {"(freebsd|netbsd|openbsd)", compile, "gmake -C \"$REBAR_DEPS_DIR/merl\" all"},
-                                            {"win32", compile, "make -C \"%REBAR_DEPS_DIR%/merl\" all -W test"},
-                                            {eunit,
-                                             "erlc -I include/erlydtl_preparser.hrl -o test"
-                                             " test/erlydtl_extension_testparser.yrl"},
-                                            {"(linux|darwin|solaris)", eunit, "make -C \"$REBAR_DEPS_DIR/merl\" test"},
-                                            {"(freebsd|netbsd|openbsd)", eunit, "gmake -C \"$REBAR_DEPS_DIR/merl\" test"},
-                                            {"win32", eunit, "make -C \"%REBAR_DEPS_DIR%/merl\" test"}
-                                           ]}]},
-             {override, erlydtl, [{pre_hooks, []}]}
-            ]}.
+{overrides, [{override, erlware_commons, [{plugins, []}]}]}.
diff --git a/rebar.lock b/rebar.lock
index 89dca39..2734711 100644
--- a/rebar.lock
+++ b/rebar.lock
@@ -2,17 +2,9 @@
   {git,"https://github.com/erlware/rebar_vsn_plugin.git",
        {ref,"fd40c960c7912193631d948fe962e1162a8d1334"}},
   1},
- {<<"merl">>,
-  {git,"git://github.com/erlydtl/merl.git",
-       {ref,"750b09d44425f435ff579a4d28bf5844bb5b4ef1"}},
-  1},
- {<<"eunit_formatters">>,
-  {git,"git://github.com/seancribbs/eunit_formatters",
-       {ref,"2c73eb6e46b0863f19507857b386a48a53aaf141"}},
-  1},
  {<<"relx">>,
-  {git,"https://github.com/erlware/relx.git",
-       {ref,"f8af9f5cd9f70ff43a043fe274dda4e56be82a2d"}},
+  {git,"https://github.com/tsloughter/relx.git",
+       {ref,"732ad5a3f902a07972460731504ca7e085b80ae5"}},
   0},
  {<<"providers">>,
   {git,"https://github.com/tsloughter/providers.git",
@@ -22,10 +14,6 @@
   {git,"https://github.com/jcomellas/getopt.git",
        {ref,"626698975e63866156159661d100785d65eab6f9"}},
   0},
- {<<"erlydtl">>,
-  {git,"https://github.com/erlydtl/erlydtl.git",
-       {ref,"a4ac28680d6e066aabf86b3be9f073352a1a4d40"}},
-  0},
  {<<"erlware_commons">>,
   {git,"https://github.com/erlware/erlware_commons.git",
        {ref,"ef0d252b11c863f9c228af2fe93a4e42fba2f7f3"}},
diff --git a/src/rebar.app.src b/src/rebar.app.src
index b404c42..5862ebd 100644
--- a/src/rebar.app.src
+++ b/src/rebar.app.src
@@ -37,7 +37,6 @@
                      rebar_prv_dialyzer,
                      rebar_prv_do,
                      rebar_prv_edoc,
-                     rebar_prv_erlydtl_compiler,
                      rebar_prv_escriptize,
                      rebar_prv_eunit,
                      rebar_prv_help,
diff --git a/src/rebar_mustache.erl b/src/rebar_mustache.erl
new file mode 100644
index 0000000..9016c0f
--- /dev/null
+++ b/src/rebar_mustache.erl
@@ -0,0 +1,230 @@
+%% 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("&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", []).
diff --git a/src/rebar_prv_erlydtl_compiler.erl b/src/rebar_prv_erlydtl_compiler.erl
deleted file mode 100644
index a7442af..0000000
--- a/src/rebar_prv_erlydtl_compiler.erl
+++ /dev/null
@@ -1,270 +0,0 @@
-%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
-%% ex: ts=4 sw=4 et
-%% -------------------------------------------------------------------
-%%
-%% rebar: Erlang Build Tools
-%%
-%% Copyright (c) 2009 Dave Smith (dizzyd@dizzyd.com),
-%%                    Bryan Fink (bryan@basho.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.
-%% -------------------------------------------------------------------
-
-%% The rebar_erlydtl_compiler module is a plugin for rebar that compiles
-%% ErlyDTL templates.  By default, it compiles all templates/*.dtl
-%% to ebin/*_dtl.beam.
-%%
-%% Configuration options should be placed in rebar.config under
-%% 'erlydtl_opts'.  It can be a list of name-value tuples or a list of
-%% lists of name-value tuples if you have multiple template directories
-%% that need to have different settings (see example below).
-%%
-%% Available options include:
-%%
-%%  doc_root: where to find templates to compile
-%%            "templates" by default
-%%
-%%  out_dir: where to put compiled template beam files
-%%           "ebin" by default
-%%
-%%  source_ext: the file extension the template sources have
-%%              ".dtl" by default
-%%
-%%  module_ext: characters to append to the template's module name
-%%              "_dtl" by default
-%%
-%%  recursive: boolean that determines if doc_root(s) need to be
-%%             scanned recursively for matching template file names
-%%             (default: true).
-%% For example, if you had:
-%%   /t_src/
-%%          base.html
-%%          foo.html
-%%
-%% And you wanted them compiled to:
-%%   /priv/
-%%         base.beam
-%%         foo.beam
-%%
-%% You would add to your rebar.config:
-%%   {erlydtl_opts, [
-%%               {doc_root,   "t_src"},
-%%               {out_dir,    "priv"},
-%%               {source_ext, ".html"},
-%%               {module_ext, ""}
-%%              ]}.
-%%
-%% The default settings are the equivalent of:
-%%   {erlydtl_opts, [
-%%               {doc_root,   "templates"},
-%%               {out_dir,    "ebin"},
-%%               {source_ext, ".dtl"},
-%%               {module_ext, "_dtl"}
-%%              ]}.
-%%
-%% The following example will compile the following templates:
-%% "src/*.dtl" files into "ebin/*_dtl.beam" and
-%% "templates/*.html" into "ebin/*.beam". Note that any tuple option
-%% (such as 'out_dir') in the outer list is added to each inner list:
-%%   {erlydtl_opts, [
-%%      {out_dir, "ebin"},
-%%      {recursive, false},
-%%      [
-%%          {doc_root, "src"}, {module_ext, "_dtl"}
-%%      ],
-%%      [
-%%          {doc_root, "templates"}, {module_ext, ""}, {source_ext, ".html"}
-%%      ]
-%%   ]}.
--module(rebar_prv_erlydtl_compiler).
-
--behaviour(provider).
-
--export([init/1,
-         do/1,
-         format_error/1]).
-
--include("rebar.hrl").
--include_lib("providers/include/providers.hrl").
-
--define(PROVIDER, compile).
--define(DEPS, [{default, compile}]).
-
-%% ===================================================================
-%% Public API
-%% ===================================================================
-
--spec init(rebar_state:t()) -> {ok, rebar_state:t()}.
-init(State) ->
-    State1 = rebar_state:add_provider(State, providers:create([{name, ?PROVIDER},
-                                                               {module, ?MODULE},
-                                                               {namespace, erlydtl},
-                                                               {bare, false},
-                                                               {deps, ?DEPS},
-                                                               {example, "rebar3 erlydtl compile"},
-                                                               {short_desc, "Compile erlydtl templates."},
-                                                               {desc, "Compile erlydtl templates."},
-                                                               {opts, []}])),
-    {ok, State1}.
-
-do(State) ->
-    ?INFO("Running erlydtl...", []),
-    case rebar_state:get(State, escript_main_app, undefined) of
-        undefined ->
-            Dir = rebar_state:dir(State),
-            case rebar_app_discover:find_app(Dir, all) of
-                {true, AppInfo} ->
-                    AllApps = rebar_state:project_apps(State) ++ rebar_state:all_deps(State),
-                    case rebar_app_utils:find(rebar_app_info:name(AppInfo), AllApps) of
-                        {ok, AppInfo1} ->
-                            %% Use the existing app info instead of newly created one
-                            run_erlydtl(AppInfo1, State);
-                        _ ->
-                            run_erlydtl(AppInfo, State)
-                    end,
-                    {ok, State};
-                _ ->
-                    ?PRV_ERROR(no_main_app)
-            end;
-        Name ->
-            AllApps = rebar_state:project_apps(State) ++ rebar_state:all_deps(State),
-            {ok, App} = rebar_app_utils:find(Name, AllApps),
-            run_erlydtl(App, State),
-            {ok, State}
-    end.
-
-run_erlydtl(App, State) ->
-    Dir = rebar_state:dir(State),
-    DtlOpts = proplists:unfold(rebar_state:get(State, erlydtl_opts, [])),
-    TemplateDir = filename:join(Dir, option(doc_root, DtlOpts)),
-    DtlOpts2 = [{doc_root, TemplateDir} | proplists:delete(doc_root, DtlOpts)],
-    OutDir = rebar_app_info:ebin_dir(App),
-    filelib:ensure_dir(filename:join(OutDir, "dummy.beam")),
-    rebar_base_compiler:run(State,
-                            [],
-                            TemplateDir,
-                            option(source_ext, DtlOpts2),
-                            OutDir,
-                            option(module_ext, DtlOpts2) ++ ".beam",
-                            fun(S, T, C) ->
-                                    compile_dtl(C, S, T, DtlOpts2, Dir, OutDir)
-                            end,
-                            [{check_last_mod, false},
-                             {recursive, option(recursive, DtlOpts2)}]).
-
--spec format_error(any()) ->  iolist().
-format_error(no_main_app) ->
-    "Erlydtl Error: Multiple project apps found and no {app, atom()} option found in erlydtl_opts.";
-format_error(Reason) ->
-    io_lib:format("~p", [Reason]).
-
-%% ===================================================================
-%% Internal functions
-%% ===================================================================
-
-option(Opt, DtlOpts) ->
-    proplists:get_value(Opt, DtlOpts, default(Opt)).
-
-default(app) -> undefined;
-default(doc_root) -> "priv/templates";
-default(source_ext) -> ".dtl";
-default(module_ext) -> "_dtl";
-default(custom_tags_dir) -> "";
-default(compiler_options) -> [return];
-default(recursive) -> true.
-
-compile_dtl(State, Source, Target, DtlOpts, Dir, OutDir) ->
-    case needs_compile(Source, Target, DtlOpts) of
-        true ->
-            do_compile(State, Source, Target, DtlOpts, Dir, OutDir);
-        false ->
-            skipped
-    end.
-
-do_compile(State, Source, Target, DtlOpts, Dir, OutDir) ->
-    CompilerOptions = option(compiler_options, DtlOpts),
-
-    Sorted = proplists:unfold(
-               lists:sort(
-                 [{out_dir, OutDir},
-                  {doc_root, filename:join(Dir, option(doc_root, DtlOpts))},
-                  {custom_tags_dir, option(custom_tags_dir, DtlOpts)},
-                  {compiler_options, CompilerOptions}])),
-
-    %% ensure that doc_root and out_dir are defined,
-    %% using defaults if necessary
-    Opts = lists:ukeymerge(1, DtlOpts, Sorted),
-    ?DEBUG("Compiling \"~s\" -> \"~s\" with options:~n    ~s",
-          [Source, Target, io_lib:format("~p", [Opts])]),
-    case erlydtl:compile_file(ec_cnv:to_list(Source),
-                              list_to_atom(module_name(Target)),
-                              Opts) of
-        {ok, _Mod} ->
-            ok;
-        {ok, _Mod, Ws} ->
-            rebar_base_compiler:ok_tuple(State, Source, Ws);
-        error ->
-            rebar_base_compiler:error_tuple(State, Source, [], [], Opts);
-        {error, Es, Ws} ->
-            rebar_base_compiler:error_tuple(State, Source, Es, Ws, Opts)
-    end.
-
-module_name(Target) ->
-    filename:rootname(filename:basename(Target), ".beam").
-
-needs_compile(Source, Target, DtlOpts) ->
-    LM = filelib:last_modified(Target),
-    LM < filelib:last_modified(Source) orelse
-        lists:any(fun(D) -> LM < filelib:last_modified(D) end,
-                  referenced_dtls(Source, DtlOpts)).
-
-referenced_dtls(Source, DtlOpts) ->
-    DtlOpts1 = lists:keyreplace(doc_root, 1, DtlOpts,
-        {doc_root, filename:dirname(Source)}),
-    Set = referenced_dtls1([Source], DtlOpts1,
-                           sets:add_element(Source, sets:new())),
-    sets:to_list(sets:del_element(Source, Set)).
-
-referenced_dtls1(Step, DtlOpts, Seen) ->
-    ExtMatch = re:replace(option(source_ext, DtlOpts), "\.", "\\\\\\\\.",
-                          [{return, list}]),
-
-    ShOpts = [{use_stdout, false}, return_on_error],
-    AllRefs =
-        lists:append(
-          [begin
-               Cmd = lists:flatten(["grep -o [^\\\"]*\\",
-                                    ExtMatch, "[^\\\"]* ", F]),
-               case rebar_utils:sh(Cmd, ShOpts) of
-                   {ok, Res} ->
-                       string:tokens(Res, "\n");
-                   {error, _} ->
-                       ""
-               end
-           end || F <- Step]),
-    DocRoot = option(doc_root, DtlOpts),
-    WithPaths = [ filename:join([DocRoot, F]) || F <- AllRefs ],
-    ?DEBUG("All deps: ~p\n", [WithPaths]),
-    Existing = [F || F <- WithPaths, filelib:is_regular(F)],
-    New = sets:subtract(sets:from_list(Existing), Seen),
-    case sets:size(New) of
-        0 -> Seen;
-        _ -> referenced_dtls1(sets:to_list(New), DtlOpts,
-                              sets:union(New, Seen))
-    end.
diff --git a/src/rebar_templater.erl b/src/rebar_templater.erl
index 746e440..0a9a07c 100644
--- a/src/rebar_templater.erl
+++ b/src/rebar_templater.erl
@@ -29,14 +29,10 @@
 -export([new/4,
          list_templates/1]).
 
-%% API for other utilities that need templating functionality
--export([resolve_variables/2,
-         render/2]).
 
 -include("rebar.hrl").
 
 -define(TEMPLATE_RE, "^[^._].*\\.template\$").
--define(ERLYDTL_COMPILE_OPTS, [report_warnings, return_errors, {auto_escape, false}, {out_dir, false}]).
 
 %% ===================================================================
 %% Public API
@@ -45,7 +41,7 @@
 %% Apply a template
 new(Template, Vars, Force, State) ->
     {AvailTemplates, Files} = find_templates(State),
-    ?DEBUG("Looking for ~p~n", [Template]),
+    ?DEBUG("Looking for ~p", [Template]),
     case lists:keyfind(Template, 1, AvailTemplates) of
         false -> {not_found, Template};
         TemplateTup -> create(TemplateTup, Files, Vars, Force, State)
@@ -57,34 +53,6 @@ list_templates(State) ->
     [list_template(Files, Template, State) || Template <- AvailTemplates].
 
 %% ===================================================================
-%% Rendering API / legacy?
-%% ===================================================================
-
-%% Given a list of key value pairs, for each string value attempt to
-%% render it using Dict as the context. Storing the result in Dict as Key.
-%%
-resolve_variables([], Dict) ->
-    Dict;
-resolve_variables([{Key, Value0} | Rest], Dict) when is_list(Value0) ->
-    Value = render(Value0, Dict),
-    resolve_variables(Rest, dict:store(Key, Value, Dict));
-resolve_variables([{Key, {list, Dicts}} | Rest], Dict) when is_list(Dicts) ->
-    %% just un-tag it so erlydtl can use it
-    resolve_variables(Rest, dict:store(Key, Dicts, Dict));
-resolve_variables([_Pair | Rest], Dict) ->
-    resolve_variables(Rest, Dict).
-
-%%
-%% Render a binary to a string, using erlydtl and the specified context
-%%
-render(Template, Context) when is_atom(Template) ->
-    Template:render(Context);
-render(Template, Context) ->
-    Module = list_to_atom(Template++"_dtl"),
-    Module:render(Context).
-
-
-%% ===================================================================
 %% Internal Functions
 %% ===================================================================
 
@@ -191,7 +159,7 @@ create({Template, Type, File}, Files, UserVars, Force, State) ->
 
 %% Run template instructions one at a time.
 execute_template([], _, {Template,_,_}, _, _) ->
-    ?DEBUG("Template ~s applied~n", [Template]),
+    ?DEBUG("Template ~s applied", [Template]),
     ok;
 %% We can't execute the description
 execute_template([{description, _} | Terms], Files, Template, Vars, Force) ->
@@ -201,13 +169,13 @@ execute_template([{variables, _} | Terms], Files, Template, Vars, Force) ->
     execute_template(Terms, Files, Template, Vars, Force);
 %% Create a directory
 execute_template([{dir, Path} | Terms], Files, Template, Vars, Force) ->
-    ?DEBUG("Creating directory ~p~n", [Path]),
+    ?DEBUG("Creating directory ~p", [Path]),
     case ec_file:mkdir_p(expand_path(Path, Vars)) of
         ok ->
             ok;
         {error, Reason} ->
             ?ABORT("Failed while processing template instruction "
-                   "{dir, ~p}: ~p~n", [Path, Reason])
+                   "{dir, ~p}: ~p", [Path, Reason])
     end,
     execute_template(Terms, Files, Template, Vars, Force);
 %% Change permissions on a file
@@ -218,29 +186,28 @@ execute_template([{chmod, File, Perm} | Terms], Files, Template, Vars, Force) ->
             execute_template(Terms, Files, Template, Vars, Force);
         {error, Reason} ->
             ?ABORT("Failed while processing template instruction "
-                   "{chmod, ~.8#, ~p}: ~p~n", [Perm, File, Reason])
+                   "{chmod, ~.8#, ~p}: ~p", [Perm, File, Reason])
     end;
 %% Create a raw untemplated file
 execute_template([{file, From, To} | Terms], Files, {Template, Type, Cwd}, Vars, Force) ->
-    ?DEBUG("Creating file ~p~n", [To]),
+    ?DEBUG("Creating file ~p", [To]),
     Data = load_file(Files, Type, filename:join(Cwd, From)),
     Out = expand_path(To,Vars),
     case write_file(Out, Data, Force) of
         ok -> ok;
-        {error, exists} -> ?INFO("File ~p already exists.~n", [Out])
+        {error, exists} -> ?INFO("File ~p already exists.", [Out])
     end,
     execute_template(Terms, Files, {Template, Type, Cwd}, Vars, Force);
 %% Operate on a django template
 execute_template([{template, From, To} | Terms], Files, {Template, Type, Cwd}, Vars, Force) ->
-    ?DEBUG("Executing template file ~p~n", [From]),
+    ?DEBUG("Executing template file ~p", [From]),
     Out = expand_path(To, Vars),
     Tpl = load_file(Files, Type, filename:join(Cwd, From)),
-    TplName = make_template_name("rebar_template", Out),
-    {ok, Mod} = erlydtl:compile_template(Tpl, TplName, ?ERLYDTL_COMPILE_OPTS),
-    {ok, Output} = Mod:render(Vars),
-    case write_file(Out, Output, Force) of
-        ok -> ok;
-        {error, exists} -> ?INFO("File ~p already exists~n", [Out])
+    case write_file(Out, render(Tpl, Vars), Force) of
+        ok ->
+            ok;
+        {error, exists} ->
+            ?INFO("File ~p already exists", [Out])
     end,
     execute_template(Terms, Files, {Template, Type, Cwd}, Vars, Force);
 %% Unknown
@@ -342,11 +309,11 @@ prioritize_templates([{Name, Type, File} | Rest], Valid) ->
             prioritize_templates(Rest, [{Name, Type, File} | Valid]);
         {_, escript, _} ->
             ?DEBUG("Skipping template ~p, due to presence of a built-in "
-                   "template with the same name~n", [Name]),
+                   "template with the same name", [Name]),
             prioritize_templates(Rest, Valid);
         {_, file, _} ->
             ?DEBUG("Skipping template ~p, due to presence of a custom "
-                   "template at ~s~n", [Name, File]),
+                   "template at ~s", [Name, File]),
             prioritize_templates(Rest, Valid)
     end.
 
@@ -409,12 +376,12 @@ write_file(Output, Data, Force) ->
             {error, exists}
     end.
 
--spec make_template_name(string(), term()) -> module().
-make_template_name(Base, Value) ->
-    %% Seed so we get different values each time
-    random:seed(os:timestamp()),
-    Hash = erlang:phash2(Value),
-    Ran = random:uniform(10000000),
-    erlang:list_to_atom(Base ++ "_" ++
-                            erlang:integer_to_list(Hash) ++
-                            "_" ++ erlang:integer_to_list(Ran)).
+%%
+%% Render a binary to a string, using mustache and the specified context
+%%
+render(Bin, Context) ->
+    %% Be sure to escape any double-quotes before rendering...
+    ReOpts = [global, {return, list}],
+    Str0 = re:replace(Bin, "\\\\", "\\\\\\", ReOpts),
+    Str1 = re:replace(Str0, "\"", "\\\\\"", ReOpts),
+    rebar_mustache:render(Str1, dict:from_list(Context)).
diff --git a/test/rebar_erlydtl_SUITE.erl b/test/rebar_erlydtl_SUITE.erl
deleted file mode 100644
index c9054fd..0000000
--- a/test/rebar_erlydtl_SUITE.erl
+++ /dev/null
@@ -1,72 +0,0 @@
-%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
-%% ex: ts=4 sw=4 et
--module(rebar_erlydtl_SUITE).
-
--export([suite/0,
-         init_per_suite/1,
-         end_per_suite/1,
-         init_per_testcase/2,
-         end_per_testcase/2,
-         all/0,
-         compile/1]).
-
--include_lib("common_test/include/ct.hrl").
--include_lib("eunit/include/eunit.hrl").
--include_lib("kernel/include/file.hrl").
-
-%% ===================================================================
-%% common_test callbacks
-%% ===================================================================
-
-suite() ->
-    [].
-
-init_per_suite(Config) ->
-    Config.
-
-end_per_suite(_Config) ->
-    ok.
-
-
-init_per_testcase(_, Config) ->
-    UpdConfig = rebar_test_utils:init_rebar_state(Config),
-    AppDir = ?config(apps, UpdConfig),
-
-    Name = rebar_test_utils:create_random_name("erlydtlapp_"),
-    Vsn = rebar_test_utils:create_random_vsn(),
-    rebar_test_utils:create_app(AppDir, Name, Vsn, [kernel, stdlib]),
-
-    write_dtl_file(AppDir, Name),
-
-    RebarConfig = [{erl_opts, [debug_info]},
-                   {erlydtl_opts, []}],
-    [{app_name, Name},
-     {rebar_config, RebarConfig} | UpdConfig].
-
-end_per_testcase(_, _Config) ->
-    ok.
-
-all() ->
-    [compile].
-
-compile(Config) ->
-    AppDir = ?config(apps, Config),
-    AppName = ?config(app_name, Config),
-    RebarConfig = ?config(rebar_config, Config),
-    Beam = beam_file(AppDir, AppName),
-    rebar_test_utils:run_and_check(
-      Config, RebarConfig, ["erlydtl", "compile"],
-      {ok, [{file, Beam}]}
-     ).
-
-beam_file(AppDir, AppName) ->
-    filename:join([AppDir, "_build", "default", "lib",
-                   AppName, "ebin", AppName++"_template_dtl.beam"]).
-
-write_dtl_file(Dir, AppName) ->
-    Erl = filename:join([Dir, "priv", "templates", AppName++"_template.dtl"]),
-    ok = filelib:ensure_dir(Erl),
-    ok = ec_file:write(Erl, get_body()).
-
-get_body() ->
-    ["[]"].