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