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 --         Copyright (C) 1998-2002 Free Software Foundation, Inc.           --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, USA.                                                      --
  21 --                                                                          --
  22 ------------------------------------------------------------------------------
  23
  24 with Xr_Tabls;     use Xr_Tabls;
  25 with Xref_Lib;     use Xref_Lib;
  26 with Osint;        use Osint;
  27 with Types;        use Types;
  28
  29 with Gnatvsn;
  30 with Opt;
  31
  32 with Ada.Strings.Fixed; use Ada.Strings.Fixed;
  33 with Ada.Text_IO;       use Ada.Text_IO;
  34 with GNAT.Command_Line; use GNAT.Command_Line;
  35
  36 procedure Gnatxref is
  37
  38    Search_Unused   : Boolean := False;
  39    Local_Symbols   : Boolean := True;
  40    Prj_File        : File_Name_String;
  41    Prj_File_Length : Natural := 0;
  42    Usage_Error     : exception;
  43    Full_Path_Name  : Boolean := False;
  44    Vi_Mode         : Boolean := False;
  45    Read_Only       : Boolean := False;
  46    Have_File       : Boolean := False;
  47    Der_Info        : Boolean := False;
  48
  49    procedure Parse_Cmd_Line;
  50    --  Parse every switch on the command line
  51
  52    procedure Write_Usage;
  53    --  Print a small help page for program usage
  54
  55    --------------------
  56    -- Parse_Cmd_Line --
  57    --------------------
  58
  59    procedure Parse_Cmd_Line is
  60    begin
  61       loop
  62          case
  63            GNAT.Command_Line.Getopt
  64              ("a aI: aO: d f g h I: nostdinc nostdlib p: u v -RTS=")
  65          is
  66             when ASCII.NUL =>
  67                exit;
  68
  69             when 'a'    =>
  70                if GNAT.Command_Line.Full_Switch = "a" then
  71                   Read_Only := True;
  72
  73                elsif GNAT.Command_Line.Full_Switch = "aI" then
  74                   Osint.Add_Src_Search_Dir (GNAT.Command_Line.Parameter);
  75
  76                else
  77                   Osint.Add_Lib_Search_Dir (GNAT.Command_Line.Parameter);
  78                end if;
  79
  80             when 'd'    =>
  81                Der_Info := True;
  82
  83             when 'f'    =>
  84                Full_Path_Name := True;
  85
  86             when 'g'    =>
  87                Local_Symbols := False;
  88
  89             when 'h'    =>
  90                Write_Usage;
  91
  92             when 'I'    =>
  93                Osint.Add_Src_Search_Dir (GNAT.Command_Line.Parameter);
  94                Osint.Add_Lib_Search_Dir (GNAT.Command_Line.Parameter);
  95
  96             when 'n'    =>
  97                if GNAT.Command_Line.Full_Switch = "nostdinc" then
  98                   Opt.No_Stdinc := True;
  99                elsif GNAT.Command_Line.Full_Switch = "nostlib" then
 100                   Opt.No_Stdlib := True;
 101                end if;
 102
 103             when 'p'    =>
 104                declare
 105                   S : constant String := GNAT.Command_Line.Parameter;
 106
 107                begin
 108                   Prj_File_Length := S'Length;
 109                   Prj_File (1 .. Prj_File_Length) := S;
 110                end;
 111
 112             when 'u'    =>
 113                Search_Unused := True;
 114                Vi_Mode := False;
 115
 116             when 'v'    =>
 117                Vi_Mode := True;
 118                Search_Unused := False;
 119
 120             --  The only switch starting with -- recognized is --RTS
 121
 122             when '-'    =>
 123                Opt.No_Stdinc  := True;
 124                Opt.RTS_Switch := True;
 125
 126                declare
 127                   Src_Path_Name : String_Ptr :=
 128                                     Get_RTS_Search_Dir
 129                                       (GNAT.Command_Line.Parameter, Include);
 130
 131                   Lib_Path_Name : String_Ptr :=
 132                                     Get_RTS_Search_Dir
 133                                       (GNAT.Command_Line.Parameter, Objects);
 134
 135                begin
 136                   if Src_Path_Name /= null and then Lib_Path_Name /= null then
 137                      Add_Search_Dirs (Src_Path_Name, Include);
 138                      Add_Search_Dirs (Lib_Path_Name, Objects);
 139
 140                   elsif Src_Path_Name = null and then Lib_Path_Name = null then
 141                      Osint.Fail ("RTS path not valid: missing " &
 142                                  "adainclude and adalib directories");
 143
 144                   elsif Src_Path_Name = null then
 145                      Osint.Fail ("RTS path not valid: missing " &
 146                                  "adainclude directory");
 147
 148                   elsif  Lib_Path_Name = null then
 149                      Osint.Fail ("RTS path not valid: missing " &
 150                                  "adalib directory");
 151                   end if;
 152                end;
 153
 154             when others =>
 155                Write_Usage;
 156          end case;
 157       end loop;
 158
 159       --  Get the other arguments
 160
 161       loop
 162          declare
 163             S : constant String := GNAT.Command_Line.Get_Argument;
 164
 165          begin
 166             exit when S'Length = 0;
 167
 168             if Ada.Strings.Fixed.Index (S, ":") /= 0 then
 169                Ada.Text_IO.Put_Line
 170                  ("Only file names are allowed on the command line");
 171                Write_Usage;
 172             end if;
 173
 174             Add_Xref_File (S);
 175             Have_File := True;
 176          end;
 177       end loop;
 178
 179    exception
 180       when GNAT.Command_Line.Invalid_Switch =>
 181          Ada.Text_IO.Put_Line ("Invalid switch : "
 182                                & GNAT.Command_Line.Full_Switch);
 183          Write_Usage;
 184
 185       when GNAT.Command_Line.Invalid_Parameter =>
 186          Ada.Text_IO.Put_Line ("Parameter missing for : "
 187                                & GNAT.Command_Line.Full_Switch);
 188          Write_Usage;
 189    end Parse_Cmd_Line;
 190
 191    -----------------
 192    -- Write_Usage --
 193    -----------------
 194
 195    procedure Write_Usage is
 196       use Ada.Text_IO;
 197
 198    begin
 199       Put_Line ("GNATXREF " & Gnatvsn.Gnat_Version_String
 200                 & " Copyright 1998-2002, Ada Core Technologies Inc.");
 201       Put_Line ("Usage: gnatxref [switches] file1 file2 ...");
 202       New_Line;
 203       Put_Line ("  file ... list of source files to xref, " &
 204                 "including with'ed units");
 205       New_Line;
 206       Put_Line ("gnatxref switches:");
 207       Put_Line ("   -a        Consider all files, even when the ali file is"
 208                 & " readonly");
 209       Put_Line ("   -aIdir    Specify source files search path");
 210       Put_Line ("   -aOdir    Specify library/object files search path");
 211       Put_Line ("   -d        Output derived type information");
 212       Put_Line ("   -f        Output full path name");
 213       Put_Line ("   -g        Output information only for global symbols");
 214       Put_Line ("   -Idir     Like -aIdir -aOdir");
 215       Put_Line ("   -nostdinc Don't look for sources in the system default"
 216                 & " directory");
 217       Put_Line ("   -nostdlib Don't look for library files in the system"
 218                 & " default directory");
 219       Put_Line ("   --RTS=dir specify the default source and object search"
 220                 & " path");
 221       Put_Line ("   -p file   Use file as the default project file");
 222       Put_Line ("   -u        List unused entities");
 223       Put_Line ("   -v        Print a 'tags' file for vi");
 224       New_Line;
 225
 226       raise Usage_Error;
 227    end Write_Usage;
 228
 229 begin
 230    Parse_Cmd_Line;
 231
 232    if not Have_File then
 233       Write_Usage;
 234    end if;
 235
 236    Xr_Tabls.Set_Default_Match (True);
 237
 238    --  Find the project file
 239
 240    if Prj_File_Length = 0 then
 241       Xr_Tabls.Create_Project_File
 242         (Default_Project_File (Osint.To_Host_Dir_Spec (".", False).all));
 243    else
 244       Xr_Tabls.Create_Project_File (Prj_File (1 .. Prj_File_Length));
 245    end if;
 246
 247    --  Fill up the table
 248
 249    Search_Xref (Local_Symbols, Read_Only, Der_Info);
 250
 251    if Search_Unused then
 252       Print_Unused (Full_Path_Name);
 253    elsif Vi_Mode then
 254       Print_Vi (Full_Path_Name);
 255    else
 256       Print_Xref (Full_Path_Name);
 257    end if;
 258
 259 exception
 260    when Usage_Error =>
 261       null;
 262 end Gnatxref;