gcc/ada/gnatxref.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             G N A T X R E F                              --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --                                                                          --
  10 --         Copyright (C) 1998-2002 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 is maintained by Ada Core Technologies Inc (http://www.gnat.com).   --
  24 --                                                                          --
  25 ------------------------------------------------------------------------------
  26
  27 with Xr_Tabls;     use Xr_Tabls;
  28 with Xref_Lib;     use Xref_Lib;
  29 with Osint;        use Osint;
  30 with Types;        use Types;
  31
  32 with Gnatvsn;
  33 with Opt;
  34
  35 with Ada.Strings.Fixed; use Ada.Strings.Fixed;
  36 with Ada.Text_IO;       use Ada.Text_IO;
  37 with GNAT.Command_Line; use GNAT.Command_Line;
  38
  39 procedure Gnatxref is
  40
  41    Search_Unused   : Boolean := False;
  42    Local_Symbols   : Boolean := True;
  43    Prj_File        : File_Name_String;
  44    Prj_File_Length : Natural := 0;
  45    Usage_Error     : exception;
  46    Full_Path_Name  : Boolean := False;
  47    Vi_Mode         : Boolean := False;
  48    Read_Only       : Boolean := False;
  49    Have_File       : Boolean := False;
  50    Der_Info        : Boolean := False;
  51
  52    procedure Parse_Cmd_Line;
  53    --  Parse every switch on the command line
  54
  55    procedure Write_Usage;
  56    --  Print a small help page for program usage
  57
  58    --------------------
  59    -- Parse_Cmd_Line --
  60    --------------------
  61
  62    procedure Parse_Cmd_Line is
  63    begin
  64       loop
  65          case
  66            GNAT.Command_Line.Getopt
  67              ("a aI: aO: d f g h I: nostdinc nostdlib p: u v -RTS=")
  68          is
  69             when ASCII.NUL =>
  70                exit;
  71
  72             when 'a'    =>
  73                if GNAT.Command_Line.Full_Switch = "a" then
  74                   Read_Only := True;
  75
  76                elsif GNAT.Command_Line.Full_Switch = "aI" then
  77                   Osint.Add_Src_Search_Dir (GNAT.Command_Line.Parameter);
  78
  79                else
  80                   Osint.Add_Lib_Search_Dir (GNAT.Command_Line.Parameter);
  81                end if;
  82
  83             when 'd'    =>
  84                Der_Info := True;
  85
  86             when 'f'    =>
  87                Full_Path_Name := True;
  88
  89             when 'g'    =>
  90                Local_Symbols := False;
  91
  92             when 'h'    =>
  93                Write_Usage;
  94
  95             when 'I'    =>
  96                Osint.Add_Src_Search_Dir (GNAT.Command_Line.Parameter);
  97                Osint.Add_Lib_Search_Dir (GNAT.Command_Line.Parameter);
  98
  99             when 'n'    =>
 100                if GNAT.Command_Line.Full_Switch = "nostdinc" then
 101                   Opt.No_Stdinc := True;
 102                elsif GNAT.Command_Line.Full_Switch = "nostlib" then
 103                   Opt.No_Stdlib := True;
 104                end if;
 105
 106             when 'p'    =>
 107                declare
 108                   S : constant String := GNAT.Command_Line.Parameter;
 109
 110                begin
 111                   Prj_File_Length := S'Length;
 112                   Prj_File (1 .. Prj_File_Length) := S;
 113                end;
 114
 115             when 'u'    =>
 116                Search_Unused := True;
 117                Vi_Mode := False;
 118
 119             when 'v'    =>
 120                Vi_Mode := True;
 121                Search_Unused := False;
 122
 123             --  The only switch starting with -- recognized is --RTS
 124
 125             when '-'    =>
 126                Opt.No_Stdinc  := True;
 127                Opt.RTS_Switch := True;
 128
 129                declare
 130                   Src_Path_Name : String_Ptr :=
 131                                     Get_RTS_Search_Dir
 132                                       (GNAT.Command_Line.Parameter, Include);
 133
 134                   Lib_Path_Name : String_Ptr :=
 135                                     Get_RTS_Search_Dir
 136                                       (GNAT.Command_Line.Parameter, Objects);
 137
 138                begin
 139                   if Src_Path_Name /= null and then Lib_Path_Name /= null then
 140                      Add_Search_Dirs (Src_Path_Name, Include);
 141                      Add_Search_Dirs (Lib_Path_Name, Objects);
 142
 143                   elsif Src_Path_Name = null and then Lib_Path_Name = null then
 144                      Osint.Fail ("RTS path not valid: missing " &
 145                                  "adainclude and adalib directories");
 146
 147                   elsif Src_Path_Name = null then
 148                      Osint.Fail ("RTS path not valid: missing " &
 149                                  "adainclude directory");
 150
 151                   elsif  Lib_Path_Name = null then
 152                      Osint.Fail ("RTS path not valid: missing " &
 153                                  "adalib directory");
 154                   end if;
 155                end;
 156
 157             when others =>
 158                Write_Usage;
 159          end case;
 160       end loop;
 161
 162       --  Get the other arguments
 163
 164       loop
 165          declare
 166             S : constant String := GNAT.Command_Line.Get_Argument;
 167
 168          begin
 169             exit when S'Length = 0;
 170
 171             if Ada.Strings.Fixed.Index (S, ":") /= 0 then
 172                Ada.Text_IO.Put_Line
 173                  ("Only file names are allowed on the command line");
 174                Write_Usage;
 175             end if;
 176
 177             Add_Xref_File (S);
 178             Have_File := True;
 179          end;
 180       end loop;
 181
 182    exception
 183       when GNAT.Command_Line.Invalid_Switch =>
 184          Ada.Text_IO.Put_Line ("Invalid switch : "
 185                                & GNAT.Command_Line.Full_Switch);
 186          Write_Usage;
 187
 188       when GNAT.Command_Line.Invalid_Parameter =>
 189          Ada.Text_IO.Put_Line ("Parameter missing for : "
 190                                & GNAT.Command_Line.Full_Switch);
 191          Write_Usage;
 192    end Parse_Cmd_Line;
 193
 194    -----------------
 195    -- Write_Usage --
 196    -----------------
 197
 198    procedure Write_Usage is
 199       use Ada.Text_IO;
 200
 201    begin
 202       Put_Line ("GNATXREF " & Gnatvsn.Gnat_Version_String
 203                 & " Copyright 1998-2002, Ada Core Technologies Inc.");
 204       Put_Line ("Usage: gnatxref [switches] file1 file2 ...");
 205       New_Line;
 206       Put_Line ("  file ... list of source files to xref, " &
 207                 "including with'ed units");
 208       New_Line;
 209       Put_Line ("gnatxref switches:");
 210       Put_Line ("   -a        Consider all files, even when the ali file is"
 211                 & " readonly");
 212       Put_Line ("   -aIdir    Specify source files search path");
 213       Put_Line ("   -aOdir    Specify library/object files search path");
 214       Put_Line ("   -d        Output derived type information");
 215       Put_Line ("   -f        Output full path name");
 216       Put_Line ("   -g        Output information only for global symbols");
 217       Put_Line ("   -Idir     Like -aIdir -aOdir");
 218       Put_Line ("   -nostdinc Don't look for sources in the system default"
 219                 & " directory");
 220       Put_Line ("   -nostdlib Don't look for library files in the system"
 221                 & " default directory");
 222       Put_Line ("   --RTS=dir specify the default source and object search"
 223                 & " path");
 224       Put_Line ("   -p file   Use file as the default project file");
 225       Put_Line ("   -u        List unused entities");
 226       Put_Line ("   -v        Print a 'tags' file for vi");
 227       New_Line;
 228
 229       raise Usage_Error;
 230    end Write_Usage;
 231
 232 begin
 233    Parse_Cmd_Line;
 234
 235    if not Have_File then
 236       Write_Usage;
 237    end if;
 238
 239    Xr_Tabls.Set_Default_Match (True);
 240
 241    --  Find the project file
 242
 243    if Prj_File_Length = 0 then
 244       Xr_Tabls.Create_Project_File
 245         (Default_Project_File (Osint.To_Host_Dir_Spec (".", False).all));
 246    else
 247       Xr_Tabls.Create_Project_File (Prj_File (1 .. Prj_File_Length));
 248    end if;
 249
 250    --  Fill up the table
 251
 252    Search_Xref (Local_Symbols, Read_Only, Der_Info);
 253
 254    if Search_Unused then
 255       Print_Unused (Full_Path_Name);
 256    elsif Vi_Mode then
 257       Print_Vi (Full_Path_Name);
 258    else
 259       Print_Xref (Full_Path_Name);
 260    end if;
 261
 262 exception
 263    when Usage_Error =>
 264       null;
 265 end Gnatxref;