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with Ada.Command_Line; use Ada.Command_Line;
with Ada.Text_IO; use Ada.Text_IO;
procedure Ghdlfilter is
type Mode_Kind is (Mode_93, Mode_87);
Mode : Mode_Kind;
Line : String (1 .. 128);
Len : Natural;
Comment : Boolean;
Block_Comment : Boolean;
begin
if Argument_Count /= 1 then
Put_Line (Standard_Error, "usage: " & Command_Name & " -v93|-v87");
return;
end if;
if Argument (1) = "-v93" then
Mode := Mode_93;
elsif Argument (1) = "-v87" then
Mode := Mode_87;
else
Put_Line (Standard_Error, "bad mode");
return;
end if;
Block_Comment := False;
loop
exit when End_Of_File;
Get_Line (Line, Len);
Comment := Block_Comment;
if Len > 5 then
if Mode = Mode_87 and Line (Len - 4 .. Len) = "--V93" then
Comment := True;
elsif Mode = Mode_93 and Line (Len - 4 .. Len) = "--V87" then
Comment := True;
end if;
end if;
if Len = 11
and then Mode = Mode_87
and then Line (1 .. 11) = "--START-V93" then
Block_Comment := True;
end if;
if Len = 9 and then Line (1 .. 9) = "--END-V93" then
Block_Comment := False;
end if;
if Comment then
Put ("-- ");
end if;
Put_Line (Line (1 .. Len));
end loop;
end Ghdlfilter;
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