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) 1998-2007, 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 3,  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 COPYING3.  If not, go to --
  19 -- http://www.gnu.org/licenses for a complete copy of the license.          --
  20 --                                                                          --
  21 -- GNAT was originally developed  by the GNAT team at  New York University. --
  22 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  23 --                                                                          --
  24 ------------------------------------------------------------------------------
  25
  26 with Opt;
  27 with Osint;    use Osint;
  28 with Switch;   use Switch;
  29 with Types;    use Types;
  30 with Xr_Tabls; use Xr_Tabls;
  31 with Xref_Lib; use Xref_Lib;
  32
  33 with Ada.Strings.Fixed; use Ada.Strings.Fixed;
  34 with Ada.Text_IO;       use Ada.Text_IO;
  35
  36 with GNAT.Command_Line; use GNAT.Command_Line;
  37
  38 with System.Strings;    use System.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 Usage;
  71    --  Display the usage
  72
  73    procedure Write_Usage;
  74    --  Print a small help page for program usage and exit program
  75
  76    --------------------
  77    -- Parse_Cmd_Line --
  78    --------------------
  79
  80    procedure Parse_Cmd_Line is
  81
  82       procedure Check_Version_And_Help is new Check_Version_And_Help_G (Usage);
  83
  84       --  Start of processing for Parse_Cmd_Line
  85
  86    begin
  87       --  First check for --version or --help
  88
  89       Check_Version_And_Help ("GNATFIND", "1998");
  90
  91       --  Now scan the other switches
  92
  93       GNAT.Command_Line.Initialize_Option_Scan;
  94
  95       loop
  96          case
  97            GNAT.Command_Line.Getopt
  98              ("a aI: aO: d e f g h I: nostdinc nostdlib p: r s t -RTS=")
  99          is
 100             when ASCII.NUL =>
 101                exit;
 102
 103             when 'a'    =>
 104                if GNAT.Command_Line.Full_Switch = "a" then
 105                   Read_Only := True;
 106                elsif GNAT.Command_Line.Full_Switch = "aI" then
 107                   Osint.Add_Src_Search_Dir (GNAT.Command_Line.Parameter);
 108                else
 109                   Osint.Add_Lib_Search_Dir (GNAT.Command_Line.Parameter);
 110                end if;
 111
 112             when 'd'    =>
 113                Der_Info := True;
 114
 115             when 'e'    =>
 116                Glob_Mode := False;
 117
 118             when 'f'    =>
 119                Full_Path_Name := True;
 120
 121             when 'g'    =>
 122                Local_Symbols := False;
 123
 124             when 'h'    =>
 125                Write_Usage;
 126
 127             when 'I'    =>
 128                Osint.Add_Src_Search_Dir (GNAT.Command_Line.Parameter);
 129                Osint.Add_Lib_Search_Dir (GNAT.Command_Line.Parameter);
 130
 131             when 'n'    =>
 132                if GNAT.Command_Line.Full_Switch = "nostdinc" then
 133                   Opt.No_Stdinc := True;
 134                elsif GNAT.Command_Line.Full_Switch = "nostdlib" then
 135                   Opt.No_Stdlib := True;
 136                end if;
 137
 138             when 'p'    =>
 139                declare
 140                   S : constant String := GNAT.Command_Line.Parameter;
 141                begin
 142                   Prj_File_Length := S'Length;
 143                   Prj_File (1 .. Prj_File_Length) := S;
 144                end;
 145
 146             when 'r'    =>
 147                Output_Ref := True;
 148
 149             when 's' =>
 150                Source_Lines := True;
 151
 152             when 't' =>
 153                Type_Tree := True;
 154
 155             --  Only switch starting with -- recognized is --RTS
 156
 157             when '-'    =>
 158                --  Check that it is the first time we see this switch
 159
 160                if RTS_Specified = null then
 161                   RTS_Specified := new String'(GNAT.Command_Line.Parameter);
 162
 163                elsif RTS_Specified.all /= GNAT.Command_Line.Parameter then
 164                   Osint.Fail ("--RTS cannot be specified multiple times");
 165                end if;
 166
 167                Opt.No_Stdinc := True;
 168                Opt.RTS_Switch := True;
 169
 170                declare
 171                   Src_Path_Name : constant String_Ptr :=
 172                                     Get_RTS_Search_Dir
 173                                       (GNAT.Command_Line.Parameter, Include);
 174                   Lib_Path_Name : constant String_Ptr :=
 175                                     Get_RTS_Search_Dir
 176                                       (GNAT.Command_Line.Parameter, Objects);
 177
 178                begin
 179                   if Src_Path_Name /= null and then Lib_Path_Name /= null then
 180                      Add_Search_Dirs (Src_Path_Name, Include);
 181                      Add_Search_Dirs (Lib_Path_Name, Objects);
 182
 183                   elsif Src_Path_Name = null and then Lib_Path_Name = null then
 184                      Osint.Fail ("RTS path not valid: missing " &
 185                                  "adainclude and adalib directories");
 186
 187                   elsif Src_Path_Name = null then
 188                      Osint.Fail ("RTS path not valid: missing " &
 189                                  "adainclude directory");
 190
 191                   elsif Lib_Path_Name = null then
 192                      Osint.Fail ("RTS path not valid: missing " &
 193                                  "adalib directory");
 194                   end if;
 195                end;
 196
 197             when others =>
 198                Write_Usage;
 199          end case;
 200       end loop;
 201
 202       --  Get the other arguments
 203
 204       loop
 205          declare
 206             S : constant String := GNAT.Command_Line.Get_Argument;
 207
 208          begin
 209             exit when S'Length = 0;
 210
 211             --  First argument is the pattern
 212
 213             if not Have_Entity then
 214                Add_Entity (Pattern, S, Glob_Mode);
 215                Have_Entity := True;
 216
 217                if not Has_File_In_Entity
 218                  and then Index (S, ":") /= 0
 219                then
 220                   Has_File_In_Entity := True;
 221                end if;
 222
 223             --  Next arguments are the files to search
 224
 225             else
 226                Add_Xref_File (S);
 227                Wide_Search := False;
 228                Nb_File := Nb_File + 1;
 229             end if;
 230          end;
 231       end loop;
 232
 233    exception
 234       when GNAT.Command_Line.Invalid_Switch =>
 235          Ada.Text_IO.Put_Line ("Invalid switch : "
 236                                & GNAT.Command_Line.Full_Switch);
 237          Write_Usage;
 238
 239       when GNAT.Command_Line.Invalid_Parameter =>
 240          Ada.Text_IO.Put_Line ("Parameter missing for : "
 241                                & GNAT.Command_Line.Full_Switch);
 242          Write_Usage;
 243
 244       when Xref_Lib.Invalid_Argument =>
 245          Ada.Text_IO.Put_Line ("Invalid line or column in the pattern");
 246          Write_Usage;
 247    end Parse_Cmd_Line;
 248
 249    -----------
 250    -- Usage --
 251    -----------
 252
 253    procedure Usage is
 254    begin
 255       Put_Line ("Usage: gnatfind pattern[:sourcefile[:line[:column]]] "
 256                 & "[file1 file2 ...]");
 257       New_Line;
 258       Put_Line ("  pattern     Name of the entity to look for (can have "
 259                 & "wildcards)");
 260       Put_Line ("  sourcefile  Only find entities referenced from this "
 261                 & "file");
 262       Put_Line ("  line        Only find entities referenced from this line "
 263                 & "of file");
 264       Put_Line ("  column      Only find entities referenced from this columns"
 265                 & " of file");
 266       Put_Line ("  file ...    Set of Ada source files to search for "
 267                 & "references. This parameters are optional");
 268       New_Line;
 269       Put_Line ("gnatfind switches:");
 270       Put_Line ("   -a        Consider all files, even when the ali file is "
 271                 & "readonly");
 272       Put_Line ("   -aIdir    Specify source files search path");
 273       Put_Line ("   -aOdir    Specify library/object files search path");
 274       Put_Line ("   -d        Output derived type information");
 275       Put_Line ("   -e        Use the full regular expression set for "
 276                 & "pattern");
 277       Put_Line ("   -f        Output full path name");
 278       Put_Line ("   -g        Output information only for global symbols");
 279       Put_Line ("   -Idir     Like -aIdir -aOdir");
 280       Put_Line ("   -nostdinc Don't look for sources in the system default"
 281                 & " directory");
 282       Put_Line ("   -nostdlib Don't look for library files in the system"
 283                 & " default directory");
 284       Put_Line ("   --RTS=dir specify the default source and object search"
 285                 & " path");
 286       Put_Line ("   -p file   Use file as the default project file");
 287       Put_Line ("   -r        Find all references (default to find declaration"
 288                 & " only)");
 289       Put_Line ("   -s        Print source line");
 290       Put_Line ("   -t        Print type hierarchy");
 291    end Usage;
 292
 293    -----------------
 294    -- Write_Usage --
 295    -----------------
 296
 297    procedure Write_Usage is
 298    begin
 299       Display_Version ("GNATFIND", "1998");
 300       New_Line;
 301
 302       Usage;
 303
 304       raise Usage_Error;
 305    end Write_Usage;
 306
 307 --  Start of processing for Gnatfind
 308
 309 begin
 310    Parse_Cmd_Line;
 311
 312    if not Have_Entity then
 313       Write_Usage;
 314    end if;
 315
 316    --  Special case to speed things up: if the user has a command line of the
 317    --  form 'gnatfind entity:file', i.e. has specified a file and only wants
 318    --  the bodies and specs, then we can restrict the search to the .ali file
 319    --  associated with 'file'.
 320
 321    if Has_File_In_Entity
 322      and then not Output_Ref
 323    then
 324       Wide_Search := False;
 325    end if;
 326
 327    --  Find the project file
 328
 329    if Prj_File_Length = 0 then
 330       Xr_Tabls.Create_Project_File (Default_Project_File ("."));
 331    else
 332       Xr_Tabls.Create_Project_File (Prj_File (1 .. Prj_File_Length));
 333    end if;
 334
 335    --  Fill up the table
 336
 337    if Type_Tree and then Nb_File > 1 then
 338       Ada.Text_IO.Put_Line ("Error: for type hierarchy output you must "
 339                             & "specify only one file.");
 340       Ada.Text_IO.New_Line;
 341       Write_Usage;
 342    end if;
 343
 344    Search (Pattern, Local_Symbols, Wide_Search, Read_Only,
 345            Der_Info, Type_Tree);
 346
 347    if Source_Lines then
 348       Xr_Tabls.Grep_Source_Files;
 349    end if;
 350
 351    Print_Gnatfind (Output_Ref, Full_Path_Name);
 352
 353 exception
 354    when Usage_Error =>
 355       null;
 356 end Gnatfind;