Fix alternative path printing, default is relative

This required moving the reporting functions to rebar_base_compiler but
since this was already done for error_tuple, this seems to make sense.

Paths are also reformatted for warnings in erlc files.

src/rebar_base_compiler.erl

@@ -32,7 +32,11 @@
          run/7,
          run/8,
          ok_tuple/2,
-         error_tuple/4]).
+         error_tuple/4,
+         format_error_source/2]).
+
+-define(DEFAULT_COMPILER_SOURCE_FORMAT, relative).
+
 
 %% ===================================================================
 %% Public API
@@ -76,6 +80,28 @@ error_tuple(Source, Es, Ws, Opts) ->
     {error, format_errors(Source, Es),
      format_warnings(Source, Ws, Opts)}.
 
+format_error_source(Path, Opts) ->
+    Type = case rebar_opts:get(Opts, compiler_source_format,
+                               ?DEFAULT_COMPILER_SOURCE_FORMAT) of
+        V when V == absolute; V == relative; V == build ->
+            V;
+        Other ->
+            ?WARN("Invalid argument ~p for compiler_source_format - "
+                  "assuming ~s~n", [Other, ?DEFAULT_COMPILER_SOURCE_FORMAT]),
+            ?DEFAULT_COMPILER_SOURCE_FORMAT
+    end,
+    case Type of
+        absolute -> resolve_linked_source(Path);
+        build -> Path;
+        relative ->
+            Cwd = rebar_dir:get_cwd(),
+            rebar_dir:make_relative_path(resolve_linked_source(Path), Cwd)
+    end.
+
+resolve_linked_source(Src) ->
+    {Dir, Base} = rebar_file_utils:split_dirname(Src),
+    filename:join(rebar_file_utils:resolve_link(Dir), Base).
+
 %% ===================================================================
 %% Internal functions
 %% ===================================================================
@@ -114,7 +140,8 @@ compile_each([Source | Rest], Config, CompileFn) ->
         skipped ->
             ?DEBUG("~sSkipped ~s", [rebar_utils:indent(1), filename:basename(Source)]);
         Error ->
-            ?ERROR("Compiling ~s failed", [Source]),
+            NewSource = format_error_source(Source, Config),
+            ?ERROR("Compiling ~s failed", [NewSource]),
             maybe_report(Error),
             ?DEBUG("Compilation failed: ~p", [Error]),
             ?FAIL

src/rebar_erlc_compiler.erl

@@ -54,9 +54,6 @@
 -define(DEFAULT_OUTDIR, "ebin").
 -define(RE_PREFIX, "^[^._]").
 
--type compiler_source_format() :: absolute | relative | build.
--define(DEFAULT_COMPILER_SOURCE_FORMAT, build).
-
 %% ===================================================================
 %% Public API
 %% ===================================================================
@@ -511,43 +508,20 @@ internal_erl_compile(Opts, Dir, Module, OutDir, ErlOpts) ->
         {ok, _Mod} ->
             ok;
         {ok, _Mod, Ws} ->
-            rebar_base_compiler:ok_tuple(Module, Ws);
+            FormattedWs = format_error_sources(Ws, Opts),
+            rebar_base_compiler:ok_tuple(Module, FormattedWs);
         {error, Es, Ws} ->
-            error_tuple(Module, Es, Ws, AllOpts, source_format(Opts))
+            error_tuple(Module, Es, Ws, AllOpts, Opts)
     end.
 
--spec source_format(rebar_dict()) -> compiler_source_format().
-source_format(Opts) ->
-    case rebar_opts:get(Opts, compiler_source_format,
-                        ?DEFAULT_COMPILER_SOURCE_FORMAT) of
-        V when V == absolute;
-               V == relative;
-               V == build -> V;
-        Other ->
-            ?WARN("Invalid argument ~p for compiler_source_format - "
-                  "assuming ~s~n", [Other, ?DEFAULT_COMPILER_SOURCE_FORMAT]),
-            ?DEFAULT_COMPILER_SOURCE_FORMAT
-    end.
+error_tuple(Module, Es, Ws, AllOpts, Opts) ->
+    FormattedEs = format_error_sources(Es, Opts),
+    FormattedWs = format_error_sources(Ws, Opts),
+    rebar_base_compiler:error_tuple(Module, FormattedEs, FormattedWs, AllOpts).
 
-error_tuple(Module, Es, Ws, Opts, SourceFormat) ->
-    Cwd = rebar_dir:get_cwd(),
-    FormattedEs = format_error_sources(Es, SourceFormat, Cwd),
-    FormattedWs = format_error_sources(Ws, SourceFormat, Cwd),
-    rebar_base_compiler:error_tuple(Module, FormattedEs, FormattedWs, Opts).
-
-format_error_sources(Es, Format, Cwd) ->
-    [{format_error_source(Src, Format, Cwd), Desc} || {Src, Desc} <- Es].
-
-format_error_source(Src, absolute, _Cwd) ->
-    resolve_linked_source(Src);
-format_error_source(Src, relative, Cwd) ->
-    rebar_dir:make_relative_path(resolve_linked_source(Src), Cwd);
-format_error_source(Src, build, _Cwd) ->
-    Src.
-
-resolve_linked_source(Src) ->
-    {Dir, Base} = rebar_file_utils:split_dirname(Src),
-    filename:join(rebar_file_utils:resolve_link(Dir), Base).
+format_error_sources(Es, Opts) ->
+    [{rebar_base_compiler:format_error_source(Src, Opts), Desc}
+     || {Src, Desc} <- Es].
 
 target_base(OutDir, Source) ->
     filename:join(OutDir, filename:basename(Source, ".erl")).