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-rw-r--r--lib/stdlib/src/epp.erl28
1 files changed, 16 insertions, 12 deletions
diff --git a/lib/stdlib/src/epp.erl b/lib/stdlib/src/epp.erl
index 230a4a0612..ccc14610d7 100644
--- a/lib/stdlib/src/epp.erl
+++ b/lib/stdlib/src/epp.erl
@@ -267,8 +267,10 @@ init_server(Pid, Name, File, AtLocation, Path, Pdm, Pre) ->
case user_predef(Pdm, Ms0) of
{ok,Ms1} ->
epp_reply(Pid, {ok,self()}),
+ %% ensure directory of current source file is first in path
+ Path1 = [filename:dirname(Name) | Path],
St = #epp{file=File, location=AtLocation, delta=0, name=Name,
- name2=Name, path=Path, macs=Ms1, pre_opened = Pre},
+ name2=Name, path=Path1, macs=Ms1, pre_opened = Pre},
From = wait_request(St),
enter_file_reply(From, Name, AtLocation, AtLocation),
wait_req_scan(St);
@@ -360,18 +362,18 @@ wait_req_skip(St, Sis) ->
From = wait_request(St),
skip_toks(From, St, Sis).
-%% enter_file(Path, FileName, IncludeToken, From, EppState)
+%% enter_file(FileName, IncludeToken, From, EppState)
%% leave_file(From, EppState)
%% Handle entering and leaving included files. Notify caller when the
%% current file is changed. Note it is an error to exit a file if we are
%% in a conditional. These functions never return.
-enter_file(_Path, _NewName, Inc, From, St)
+enter_file(_NewName, Inc, From, St)
when length(St#epp.sstk) >= 8 ->
epp_reply(From, {error,{abs_loc(Inc),epp,{depth,"include"}}}),
wait_req_scan(St);
-enter_file(Path, NewName, Inc, From, St) ->
- case file:path_open(Path, NewName, [read]) of
+enter_file(NewName, Inc, From, St) ->
+ case file:path_open(St#epp.path, NewName, [read]) of
{ok,NewF,Pname} ->
Loc = start_loc(St#epp.location),
wait_req_scan(enter_file2(NewF, Pname, From, St, Loc));
@@ -384,13 +386,16 @@ enter_file(Path, NewName, Inc, From, St) ->
%% Set epp to use this file and "enter" it.
enter_file2(NewF, Pname, From, St, AtLocation) ->
- enter_file2(NewF, Pname, From, St, AtLocation, []).
-
-enter_file2(NewF, Pname, From, St, AtLocation, ExtraPath) ->
Loc = start_loc(AtLocation),
enter_file_reply(From, Pname, Loc, AtLocation),
Ms = dict:store({atom,'FILE'}, {none,[{string,Loc,Pname}]}, St#epp.macs),
- Path = St#epp.path ++ ExtraPath,
+ %% update the head of the include path to be the directory of the new
+ %% source file, so that an included file can always include other files
+ %% relative to its current location (this is also how C does it); note
+ %% that the directory of the parent source file (the previous head of
+ %% the path) must be dropped, otherwise the path used within the current
+ %% file will depend on the order of file inclusions in the parent files
+ Path = [filename:dirname(Pname) | tl(St#epp.path)],
#epp{file=NewF,location=Loc,name=Pname,delta=0,
sstk=[St|St#epp.sstk],path=Path,macs=Ms}.
@@ -655,7 +660,7 @@ scan_undef(_Toks, Undef, From, St) ->
scan_include([{'(',_Llp},{string,_Lf,NewName0},{')',_Lrp},{dot,_Ld}], Inc,
From, St) ->
NewName = expand_var(NewName0),
- enter_file(St#epp.path, NewName, Inc, From, St);
+ enter_file(NewName, Inc, From, St);
scan_include(_Toks, Inc, From, St) ->
epp_reply(From, {error,{abs_loc(Inc),epp,{bad,include}}}),
wait_req_scan(St).
@@ -687,9 +692,8 @@ scan_include_lib([{'(',_Llp},{string,_Lf,NewName0},{')',_Lrp},{dot,_Ld}],
LibName = fname_join([LibDir | Rest]),
case file:open(LibName, [read]) of
{ok,NewF} ->
- ExtraPath = [filename:dirname(LibName)],
wait_req_scan(enter_file2(NewF, LibName, From,
- St, Loc, ExtraPath));
+ St, Loc));
{error,_E2} ->
epp_reply(From,
{error,{abs_loc(Inc),epp,