gcc/ada/osint-b.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                              O S I N T - B                               --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --                                                                          --
  10 --          Copyright (C) 2001 Free Software Foundation, Inc.               --
  11 --                                                                          --
  12 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  13 -- terms of the  GNU General Public License as published  by the Free Soft- --
  14 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  15 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  16 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  17 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  18 -- for  more details.  You should have  received  a copy of the GNU General --
  19 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  20 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  21 -- MA 02111-1307, USA.                                                      --
  22 --                                                                          --
  23 -- GNAT was originally developed  by the GNAT team at  New York University. --
  24 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
  25 --                                                                          --
  26 ------------------------------------------------------------------------------
  27
  28 with Hostparm;
  29 with Namet;   use Namet;
  30 with Opt;     use Opt;
  31
  32 package body Osint.B is
  33
  34    Binder_Output_Time_Stamps_Set : Boolean := False;
  35
  36    Old_Binder_Output_Time_Stamp  : Time_Stamp_Type;
  37    New_Binder_Output_Time_Stamp  : Time_Stamp_Type;
  38    Recording_Time_From_Last_Bind : Boolean := False;
  39
  40    -------------------------
  41    -- Close_Binder_Output --
  42    -------------------------
  43
  44    procedure Close_Binder_Output is
  45    begin
  46       Close (Output_FD);
  47
  48       if Recording_Time_From_Last_Bind then
  49          New_Binder_Output_Time_Stamp  := File_Stamp (Output_File_Name);
  50          Binder_Output_Time_Stamps_Set := True;
  51       end if;
  52    end Close_Binder_Output;
  53
  54    --------------------------
  55    -- Create_Binder_Output --
  56    --------------------------
  57
  58    procedure Create_Binder_Output
  59      (Output_File_Name : String;
  60       Typ              : Character;
  61       Bfile            : out Name_Id)
  62    is
  63       File_Name : String_Ptr;
  64       Findex1   : Natural;
  65       Findex2   : Natural;
  66       Flength   : Natural;
  67
  68    begin
  69       if Output_File_Name /= "" then
  70          Name_Buffer (Output_File_Name'Range) := Output_File_Name;
  71          Name_Buffer (Output_File_Name'Last + 1) := ASCII.NUL;
  72
  73          if Typ = 's' then
  74             Name_Buffer (Output_File_Name'Last) := 's';
  75          end if;
  76
  77          Name_Len := Output_File_Name'Last;
  78
  79       else
  80          Name_Buffer (1) := 'b';
  81          File_Name := File_Names (Current_File_Name_Index);
  82
  83          Findex1 := File_Name'First;
  84
  85          --  The ali file might be specified by a full path name. However,
  86          --  the binder generated file should always be created in the
  87          --  current directory, so the path might need to be stripped away.
  88          --  In addition to the default directory_separator allow the '/' to
  89          --  act as separator since this is allowed in MS-DOS and OS2 ports.
  90
  91          for J in reverse File_Name'Range loop
  92             if File_Name (J) = Directory_Separator
  93               or else File_Name (J) = '/'
  94             then
  95                Findex1 := J + 1;
  96                exit;
  97             end if;
  98          end loop;
  99
 100          Findex2 := File_Name'Last;
 101          while File_Name (Findex2) /=  '.' loop
 102             Findex2 := Findex2 - 1;
 103          end loop;
 104
 105          Flength := Findex2 - Findex1;
 106
 107          if Maximum_File_Name_Length > 0 then
 108
 109             --  Make room for the extra two characters in "b?"
 110
 111             while Int (Flength) > Maximum_File_Name_Length - 2 loop
 112                Findex2 := Findex2 - 1;
 113                Flength := Findex2 - Findex1;
 114             end loop;
 115          end if;
 116
 117          Name_Buffer (3 .. Flength + 2) := File_Name (Findex1 .. Findex2 - 1);
 118          Name_Buffer (Flength + 3) := '.';
 119
 120          --  C bind file, name is b_xxx.c
 121
 122          if Typ = 'c' then
 123             Name_Buffer (2) := '_';
 124             Name_Buffer (Flength + 4) := 'c';
 125             Name_Buffer (Flength + 5) := ASCII.NUL;
 126             Name_Len := Flength + 4;
 127
 128          --  Ada bind file, name is b~xxx.adb or b~xxx.ads
 129          --  (with $ instead of ~ in VMS)
 130
 131          else
 132             if Hostparm.OpenVMS then
 133                Name_Buffer (2) := '$';
 134             else
 135                Name_Buffer (2) := '~';
 136             end if;
 137
 138             Name_Buffer (Flength + 4) := 'a';
 139             Name_Buffer (Flength + 5) := 'd';
 140             Name_Buffer (Flength + 6) := Typ;
 141             Name_Buffer (Flength + 7) := ASCII.NUL;
 142             Name_Len := Flength + 6;
 143          end if;
 144       end if;
 145
 146       Bfile := Name_Find;
 147
 148       if Recording_Time_From_Last_Bind then
 149          Old_Binder_Output_Time_Stamp := File_Stamp (Bfile);
 150       end if;
 151
 152       Create_File_And_Check (Output_FD, Text);
 153    end Create_Binder_Output;
 154
 155    --------------------
 156    -- More_Lib_Files --
 157    --------------------
 158
 159    function More_Lib_Files return Boolean renames  More_Files;
 160
 161    ------------------------
 162    -- Next_Main_Lib_File --
 163    ------------------------
 164
 165    function Next_Main_Lib_File return File_Name_Type renames Next_Main_File;
 166
 167    --------------------------------
 168    -- Record_Time_From_Last_Bind --
 169    --------------------------------
 170
 171    procedure Record_Time_From_Last_Bind is
 172    begin
 173       Recording_Time_From_Last_Bind := True;
 174    end Record_Time_From_Last_Bind;
 175
 176    -------------------------
 177    -- Time_From_Last_Bind --
 178    -------------------------
 179
 180    function Time_From_Last_Bind return Nat is
 181       Old_Y  : Nat;
 182       Old_M  : Nat;
 183       Old_D  : Nat;
 184       Old_H  : Nat;
 185       Old_Mi : Nat;
 186       Old_S  : Nat;
 187       New_Y  : Nat;
 188       New_M  : Nat;
 189       New_D  : Nat;
 190       New_H  : Nat;
 191       New_Mi : Nat;
 192       New_S  : Nat;
 193
 194       type Month_Data is array (Int range 1 .. 12) of Int;
 195       Cumul : constant Month_Data := (0, 0, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7);
 196       --  Represents the difference in days from a period compared to the
 197       --  same period if all months had 31 days, i.e:
 198       --
 199       --    Cumul (m) = 31x(m-1) - (number of days from 01/01 to m/01)
 200
 201       Res : Int;
 202
 203    begin
 204       if not Recording_Time_From_Last_Bind
 205         or else not Binder_Output_Time_Stamps_Set
 206         or else Old_Binder_Output_Time_Stamp = Empty_Time_Stamp
 207       then
 208          return Nat'Last;
 209       end if;
 210
 211       Split_Time_Stamp
 212        (Old_Binder_Output_Time_Stamp,
 213         Old_Y, Old_M, Old_D, Old_H, Old_Mi, Old_S);
 214
 215       Split_Time_Stamp
 216        (New_Binder_Output_Time_Stamp,
 217         New_Y, New_M, New_D, New_H, New_Mi, New_S);
 218
 219       Res := New_Mi - Old_Mi;
 220
 221       --  60 minutes in an hour
 222
 223       Res := Res + 60 * (New_H  - Old_H);
 224
 225       --  24 hours in a day
 226
 227       Res := Res + 60 * 24 * (New_D  - Old_D);
 228
 229       --  Almost 31 days in a month
 230
 231       Res := Res + 60 * 24 *
 232         (31 * (New_M - Old_M) - Cumul (New_M) + Cumul (Old_M));
 233
 234       --  365 days in a year
 235
 236       Res := Res + 60 * 24 * 365 * (New_Y - Old_Y);
 237
 238       return Res;
 239    end Time_From_Last_Bind;
 240
 241    -----------------------
 242    -- Write_Binder_Info --
 243    -----------------------
 244
 245    procedure Write_Binder_Info (Info : String) renames Write_Info;
 246
 247 begin
 248    Set_Program (Binder);
 249 end Osint.B;