ar: move --print-armap support code to archive library

erlang/apps/ar/src/ar.erl

@@ -439,7 +439,7 @@ ar_print_armap(ArchiveFile) ->
   case archive:read(ArchiveFile) of
     {ok, {FP, Archive}} ->
       try
-        ar_print_armap_1(Archive)
+        archive:print_armap(Archive)
       after
         pdp10_stdio:fclose(FP)
       end;
@@ -447,29 +447,6 @@ ar_print_armap(ArchiveFile) ->
       escript_runtime:fatal("failed to read ~s: ~p\n", [ArchiveFile, Reason])
   end.
 
-ar_print_armap_1(Archive) ->
-  #archive{symtab = SymTab, members = Members} = Archive,
-  case SymTab of
-    false ->
-      io:format(standard_io, "No archive index\n", []);
-    _ ->
-      io:format(standard_io, "Archive index:\n", []),
-      OffsetToNameMap =
-        maps:from_list(
-          lists:map(
-            fun(#member{location = Offset, arhdr = #arhdr{ar_name = Name}}) ->
-              {Offset, Name}
-            end, Members)),
-      lists:foreach(
-        fun({Symbol, Offset}) ->
-          ar_print_armap(Symbol, Offset, OffsetToNameMap)
-        end, SymTab)
-  end.
-
-ar_print_armap(Symbol, Offset, OffsetToNameMap) ->
-  Name = maps:get(Offset, OffsetToNameMap, "<unknown>"),
-  io:format(standard_io, "~s in ~s at ~p\n", [Symbol, Name, Offset]).
-
 %% labelled archives ===========================================================
 %%
 %% - members are ordered as stored in the archive

erlang/apps/lib/src/archive.erl

@@ -22,6 +22,7 @@
 
 -export([ iocpy/4
         , new/0
+        , print_armap/1
         , read/1
         , write/4
         ]).
@@ -38,6 +39,32 @@ new() ->
   {ok, Archive} = make_archive(_SymTab = [], _Members = []),
   Archive.
 
+%% print the symbol table ======================================================
+
+-spec print_armap(#archive{}) -> ok.
+print_armap(Archive) ->
+  #archive{symtab = SymTab, members = Members} = Archive,
+  case SymTab of
+    false ->
+      io:format(standard_io, "No archive index\n", []);
+    _ ->
+      io:format(standard_io, "Archive index:\n", []),
+      OffsetToNameMap =
+        maps:from_list(
+          lists:map(
+            fun(#member{location = Offset, arhdr = #arhdr{ar_name = Name}}) ->
+              {Offset, Name}
+            end, Members)),
+      lists:foreach(
+        fun({Symbol, Offset}) ->
+          print_armap(Symbol, Offset, OffsetToNameMap)
+        end, SymTab)
+  end.
+
+print_armap(Symbol, Offset, OffsetToNameMap) ->
+  Name = maps:get(Offset, OffsetToNameMap, "<unknown>"),
+  io:format(standard_io, "~s in ~s at ~p\n", [Symbol, Name, Offset]).
+
 %% archive output ==============================================================
 
 -spec write(boolean(), string(), file() | false, #archive{}) -> ok | {error, any()}.