OTP-8387 Explicit top directories in archive files are now optional.

          For example, if an archive (app-vsn.ez) just contains an
          app-vsn/ebin/mod.beam file, the file info for the app-vsn and
          app-vsn/ebin directories are faked using the file info from the
          archive file as origin. The virtual direcories can also be
          listed. For short, the top directories are virtual if they does
          not exist.

1 files changed, 42 insertions, 15 deletions

diff --git a/erts/preloaded/src/prim_zip.erl b/erts/preloaded/src/prim_zip.erl
index 17ef8c6c43..3f5a5b9721 100644
--- a/erts/preloaded/src/prim_zip.erl
+++ b/erts/preloaded/src/prim_zip.erl
@@ -1,19 +1,19 @@
 %%
 %% %CopyrightBegin%
-%% 
-%% Copyright Ericsson AB 2008-2009. All Rights Reserved.
-%% 
+%%
+%% Copyright Ericsson AB 2008-2010. All Rights Reserved.
+%%
 %% The contents of this file are subject to the Erlang Public License,
 %% Version 1.1, (the "License"); you may not use this file except in
 %% compliance with the License. You should have received a copy of the
 %% Erlang Public License along with this software. If not, it can be
 %% retrieved online at http://www.erlang.org/.
-%% 
+%%
 %% Software distributed under the License is distributed on an "AS IS"
 %% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 %% the License for the specific language governing rights and limitations
 %% under the License.
-%% 
+%%
 %% %CopyrightEnd%
 %%
 
@@ -94,12 +94,7 @@ do_foldl(FilterFun, FilterAcc, [PF | Tail], Acc0, PrimZip, PrimZipOrig) ->
     #primzip_file{name = F, get_info = GetInfo, get_bin = GetBin} = PF,
     case FilterFun({F, GetInfo, GetBin}, FilterAcc) of
 	{Continue, Include, FilterAcc2} ->
-	    Acc1 =
-		case Include of
-		    false -> Acc0;
-		    true -> [PF | Acc0];
-		    {true, Nick} -> [PF#primzip_file{name = Nick} | Acc0]
-		end,
+	    Acc1 = include_acc(Include, PF, Acc0),
 	    case Continue of
 		true ->
 		    do_foldl(FilterFun, FilterAcc2, Tail, Acc1, PrimZip, PrimZipOrig);
@@ -112,6 +107,28 @@ do_foldl(FilterFun, FilterAcc, [PF | Tail], Acc0, PrimZip, PrimZipOrig) ->
 do_foldl(_FilterFun, FilterAcc, [], Acc, PrimZip, _PrimZipOrig) ->
     {ok, FilterAcc, PrimZip#primzip{files = reverse(Acc)}}.
 
+include_acc(Include, PF, Acc) ->
+    case Include of
+	false ->
+	    Acc;
+	true ->
+	    [PF | Acc];
+	{true, Nick} ->
+	    [PF#primzip_file{name = Nick} | Acc];
+	{true, Nick, GetInfo, GetBin} ->
+	    PF2 = #primzip_file{name = Nick, get_info = GetInfo, get_bin = GetBin},
+	    [PF2 | Acc];
+	List when is_list(List) ->
+	    %% Add new entries
+	    Fun = fun(I, A) -> include_acc(I, PF, A) end,
+	    lists_foldl(Fun, Acc, List)
+    end.
+
+lists_foldl(F, Accu, [Hd|Tail]) ->
+    lists_foldl(F, F(Hd, Accu), Tail);
+lists_foldl(F, Accu, []) when is_function(F, 2) -> 
+    Accu.
+
 %% close a zip archive
 close(#primzip{in = In0, input = Input, zlib = Z}) ->
     Input(close, In0),
@@ -199,15 +216,25 @@ get_cd_loop(N, BCD, Acc0, PrimZip, FileName, Offset, CFH, EndOffset, FilterFun,
 	end,
     %% erlang:display({FileName, N, Offset, Size, NextPF}),
     GetInfo = fun() -> cd_file_header_to_file_info(FileName, CFH, <<>>) end,
-    GetBin  = fun() -> get_z_file(FileName, Offset, Size, PrimZip) end,
+    GetBin = fun() -> get_z_file(FileName, Offset, Size, PrimZip) end,
     PF = #primzip_file{name = FileName, get_info = GetInfo, get_bin = GetBin},
     case FilterFun({FileName, GetInfo, GetBin}, FilterAcc) of
 	{Continue, Include, FilterAcc2} ->
 	    Acc1 =
 		case Include of
-		    false -> Acc0;
-		    true -> [PF | Acc0];
-		    {true, Nick} -> [PF#primzip_file{name = Nick} | Acc0]
+		    false -> 
+			Acc0;
+		    true ->
+			[PF | Acc0];
+		    {true, Nick} -> 
+			[PF#primzip_file{name = Nick} | Acc0];
+		    {true, Nick, GI, GB} ->
+			PF2 = #primzip_file{name = Nick, get_info = GI, get_bin = GB},
+			[PF2 | Acc0];
+		    List when is_list(List) ->
+			%% Add new entries
+			Fun = fun(I, A) -> include_acc(I, PF, A) end,
+			lists_foldl(Fun, Acc0, List)
 		end,
 	    case Continue of
 		true when N > 1 ->