gcc/ada/gnatfind.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             G N A T F I N D                              --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --         Copyright (C) 1998-2005 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,  51  Franklin  Street,  Fifth  Floor, --
  20 -- Boston, MA 02110-1301, USA.                                              --
  21 --                                                                          --
  22 -- GNAT was originally developed  by the GNAT team at  New York University. --
  23 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  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 with GNAT.Strings;      use GNAT.Strings;
  39
  40 --------------
  41 -- Gnatfind --
  42 --------------
  43
  44 procedure Gnatfind is
  45    Output_Ref      : Boolean := False;
  46    Pattern         : Xref_Lib.Search_Pattern;
  47    Local_Symbols   : Boolean := True;
  48    Prj_File        : File_Name_String;
  49    Prj_File_Length : Natural := 0;
  50    Nb_File         : Natural := 0;
  51    Usage_Error     : exception;
  52    Full_Path_Name  : Boolean := False;
  53    Have_Entity     : Boolean := False;
  54    Wide_Search     : Boolean := True;
  55    Glob_Mode       : Boolean := True;
  56    Der_Info        : Boolean := False;
  57    Type_Tree       : Boolean := False;
  58    Read_Only       : Boolean := False;
  59    Source_Lines    : Boolean := False;
  60
  61    Has_File_In_Entity : Boolean := False;
  62    --  Will be true if a file name was specified in the entity
  63
  64    RTS_Specified : String_Access := null;
  65    --  Used to detect multiple use of --RTS= switch
  66
  67    procedure Parse_Cmd_Line;
  68    --  Parse every switch on the command line
  69
  70    procedure Write_Usage;
  71    --  Print a small help page for program usage
  72
  73    --------------------
  74    -- Parse_Cmd_Line --
  75    --------------------
  76
  77    procedure Parse_Cmd_Line is
  78    begin
  79       loop
  80          case
  81            GNAT.Command_Line.Getopt
  82              ("a aI: aO: d e f g h I: nostdinc nostdlib p: r s t -RTS=")
  83          is
  84             when ASCII.NUL =>
  85                exit;
  86
  87             when 'a'    =>
  88                if GNAT.Command_Line.Full_Switch = "a" then
  89                   Read_Only := True;
  90                elsif GNAT.Command_Line.Full_Switch = "aI" then
  91                   Osint.Add_Src_Search_Dir (GNAT.Command_Line.Parameter);
  92                else
  93                   Osint.Add_Lib_Search_Dir (GNAT.Command_Line.Parameter);
  94                end if;
  95
  96             when 'd'    =>
  97                Der_Info := True;
  98
  99             when 'e'    =>
 100                Glob_Mode := False;
 101
 102             when 'f'    =>
 103                Full_Path_Name := True;
 104
 105             when 'g'    =>
 106                Local_Symbols := False;
 107
 108             when 'h'    =>
 109                Write_Usage;
 110
 111             when 'I'    =>
 112                Osint.Add_Src_Search_Dir (GNAT.Command_Line.Parameter);
 113                Osint.Add_Lib_Search_Dir (GNAT.Command_Line.Parameter);
 114
 115             when 'n'    =>
 116                if GNAT.Command_Line.Full_Switch = "nostdinc" then
 117                   Opt.No_Stdinc := True;
 118                elsif GNAT.Command_Line.Full_Switch = "nostlib" then
 119                   Opt.No_Stdlib := True;
 120                end if;
 121
 122             when 'p'    =>
 123                declare
 124                   S : constant String := GNAT.Command_Line.Parameter;
 125                begin
 126                   Prj_File_Length := S'Length;
 127                   Prj_File (1 .. Prj_File_Length) := S;
 128                end;
 129
 130             when 'r'    =>
 131                Output_Ref := True;
 132
 133             when 's' =>
 134                Source_Lines := True;
 135
 136             when 't' =>
 137                Type_Tree := True;
 138
 139             --  Only switch starting with -- recognized is --RTS
 140
 141             when '-'    =>
 142                --  Check that it is the first time we see this switch
 143
 144                if RTS_Specified = null then
 145                   RTS_Specified := new String'(GNAT.Command_Line.Parameter);
 146
 147                elsif RTS_Specified.all /= GNAT.Command_Line.Parameter then
 148                   Osint.Fail ("--RTS cannot be specified multiple times");
 149                end if;
 150
 151                Opt.No_Stdinc := True;
 152                Opt.RTS_Switch := True;
 153
 154                declare
 155                   Src_Path_Name : constant String_Ptr :=
 156                                     Get_RTS_Search_Dir
 157                                       (GNAT.Command_Line.Parameter, Include);
 158                   Lib_Path_Name : constant String_Ptr :=
 159                                     Get_RTS_Search_Dir
 160                                       (GNAT.Command_Line.Parameter, Objects);
 161
 162                begin
 163                   if Src_Path_Name /= null and then Lib_Path_Name /= null then
 164                      Add_Search_Dirs (Src_Path_Name, Include);
 165                      Add_Search_Dirs (Lib_Path_Name, Objects);
 166
 167                   elsif Src_Path_Name = null and then Lib_Path_Name = null then
 168                      Osint.Fail ("RTS path not valid: missing " &
 169                                  "adainclude and adalib directories");
 170
 171                   elsif Src_Path_Name = null then
 172                      Osint.Fail ("RTS path not valid: missing " &
 173                                  "adainclude directory");
 174
 175                   elsif Lib_Path_Name = null then
 176                      Osint.Fail ("RTS path not valid: missing " &
 177                                  "adalib directory");
 178                   end if;
 179                end;
 180
 181             when others =>
 182                Write_Usage;
 183          end case;
 184       end loop;
 185
 186       --  Get the other arguments
 187
 188       loop
 189          declare
 190             S : constant String := GNAT.Command_Line.Get_Argument;
 191
 192          begin
 193             exit when S'Length = 0;
 194
 195             --  First argument is the pattern
 196
 197             if not Have_Entity then
 198                Add_Entity (Pattern, S, Glob_Mode);
 199                Have_Entity := True;
 200
 201                if not Has_File_In_Entity
 202                  and then Index (S, ":") /= 0
 203                then
 204                   Has_File_In_Entity := True;
 205                end if;
 206
 207             --  Next arguments are the files to search
 208
 209             else
 210                Add_Xref_File (S);
 211                Wide_Search := False;
 212                Nb_File := Nb_File + 1;
 213             end if;
 214          end;
 215       end loop;
 216
 217    exception
 218       when GNAT.Command_Line.Invalid_Switch =>
 219          Ada.Text_IO.Put_Line ("Invalid switch : "
 220                                & GNAT.Command_Line.Full_Switch);
 221          Write_Usage;
 222
 223       when GNAT.Command_Line.Invalid_Parameter =>
 224          Ada.Text_IO.Put_Line ("Parameter missing for : "
 225                                & GNAT.Command_Line.Full_Switch);
 226          Write_Usage;
 227
 228       when Xref_Lib.Invalid_Argument =>
 229          Ada.Text_IO.Put_Line ("Invalid line or column in the pattern");
 230          Write_Usage;
 231    end Parse_Cmd_Line;
 232
 233    -----------------
 234    -- Write_Usage --
 235    -----------------
 236
 237    procedure Write_Usage is
 238    begin
 239       Put_Line ("GNATFIND " & Gnatvsn.Gnat_Version_String);
 240       Put_Line ("Copyright 1998-2005, AdaCore");
 241       Put_Line ("Usage: gnatfind pattern[:sourcefile[:line[:column]]] "
 242                 & "[file1 file2 ...]");
 243       New_Line;
 244       Put_Line ("  pattern     Name of the entity to look for (can have "
 245                 & "wildcards)");
 246       Put_Line ("  sourcefile  Only find entities referenced from this "
 247                 & "file");
 248       Put_Line ("  line        Only find entities referenced from this line "
 249                 & "of file");
 250       Put_Line ("  column      Only find entities referenced from this columns"
 251                 & " of file");
 252       Put_Line ("  file ...    Set of Ada source files to search for "
 253                 & "references. This parameters are optional");
 254       New_Line;
 255       Put_Line ("gnatfind switches:");
 256       Put_Line ("   -a        Consider all files, even when the ali file is "
 257                 & "readonly");
 258       Put_Line ("   -aIdir    Specify source files search path");
 259       Put_Line ("   -aOdir    Specify library/object files search path");
 260       Put_Line ("   -d        Output derived type information");
 261       Put_Line ("   -e        Use the full regular expression set for "
 262                 & "pattern");
 263       Put_Line ("   -f        Output full path name");
 264       Put_Line ("   -g        Output information only for global symbols");
 265       Put_Line ("   -Idir     Like -aIdir -aOdir");
 266       Put_Line ("   -nostdinc Don't look for sources in the system default"
 267                 & " directory");
 268       Put_Line ("   -nostdlib Don't look for library files in the system"
 269                 & " default directory");
 270       Put_Line ("   --RTS=dir specify the default source and object search"
 271                 & " path");
 272       Put_Line ("   -p file   Use file as the default project file");
 273       Put_Line ("   -r        Find all references (default to find declaration"
 274                 & " only)");
 275       Put_Line ("   -s        Print source line");
 276       Put_Line ("   -t        Print type hierarchy");
 277       New_Line;
 278
 279       raise Usage_Error;
 280    end Write_Usage;
 281
 282 --  Start of processing for Gnatfind
 283
 284 begin
 285    Parse_Cmd_Line;
 286
 287    if not Have_Entity then
 288       Write_Usage;
 289    end if;
 290
 291    --  Special case to speed things up: if the user has a command line of the
 292    --  form 'gnatfind entity:file', ie has specified a file and only wants the
 293    --  bodies and specs, then we can restrict the search to the .ali file
 294    --  associated with 'file'.
 295
 296    if Has_File_In_Entity
 297      and then not Output_Ref
 298    then
 299       Wide_Search := False;
 300    end if;
 301
 302    --  Find the project file
 303
 304    if Prj_File_Length = 0 then
 305       Xr_Tabls.Create_Project_File (Default_Project_File ("."));
 306    else
 307       Xr_Tabls.Create_Project_File (Prj_File (1 .. Prj_File_Length));
 308    end if;
 309
 310    --  Fill up the table
 311
 312    if Type_Tree and then Nb_File > 1 then
 313       Ada.Text_IO.Put_Line ("Error: for type hierarchy output you must "
 314                             & "specify only one file.");
 315       Ada.Text_IO.New_Line;
 316       Write_Usage;
 317    end if;
 318
 319    Search (Pattern, Local_Symbols, Wide_Search, Read_Only,
 320            Der_Info, Type_Tree);
 321
 322    if Source_Lines then
 323       Xr_Tabls.Grep_Source_Files;
 324    end if;
 325
 326    Print_Gnatfind (Output_Ref, Full_Path_Name);
 327
 328 exception
 329    when Usage_Error =>
 330       null;
 331 end Gnatfind;