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) 1998-2002 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 ---------------
  37 --  Gnatfind --
  38 ---------------
  39
  40 procedure Gnatfind is
  41
  42    Output_Ref      : Boolean := False;
  43    Pattern         : Xref_Lib.Search_Pattern;
  44    Local_Symbols   : Boolean := True;
  45    Prj_File        : File_Name_String;
  46    Prj_File_Length : Natural := 0;
  47    Nb_File         : Natural := 0;
  48    Usage_Error     : exception;
  49    Full_Path_Name  : Boolean := False;
  50    Have_Entity     : Boolean := False;
  51    Wide_Search     : Boolean := True;
  52    Glob_Mode       : Boolean := True;
  53    Der_Info        : Boolean := False;
  54    Type_Tree       : Boolean := False;
  55    Read_Only       : Boolean := False;
  56    Source_Lines    : Boolean := False;
  57
  58    Has_File_In_Entity : Boolean := False;
  59    --  Will be true if a file name was specified in the entity
  60
  61    procedure Parse_Cmd_Line;
  62    --  Parse every switch on the command line
  63
  64    procedure Write_Usage;
  65    --  Print a small help page for program usage
  66
  67    --------------------
  68    -- Parse_Cmd_Line --
  69    --------------------
  70
  71    procedure Parse_Cmd_Line is
  72    begin
  73       loop
  74          case
  75            GNAT.Command_Line.Getopt
  76              ("a aI: aO: d e f g h I: nostdinc nostdlib p: r s t -RTS=")
  77          is
  78             when ASCII.NUL =>
  79                exit;
  80
  81             when 'a'    =>
  82                if GNAT.Command_Line.Full_Switch = "a" then
  83                   Read_Only := True;
  84
  85                elsif GNAT.Command_Line.Full_Switch = "aI" then
  86                   Osint.Add_Src_Search_Dir (GNAT.Command_Line.Parameter);
  87
  88                else
  89                   Osint.Add_Lib_Search_Dir (GNAT.Command_Line.Parameter);
  90                end if;
  91
  92             when 'd'    =>
  93                Der_Info := True;
  94
  95             when 'e'    =>
  96                Glob_Mode := False;
  97
  98             when 'f'    =>
  99                Full_Path_Name := True;
 100
 101             when 'g'    =>
 102                Local_Symbols := False;
 103
 104             when 'h'    =>
 105                Write_Usage;
 106
 107             when 'I'    =>
 108                Osint.Add_Src_Search_Dir (GNAT.Command_Line.Parameter);
 109                Osint.Add_Lib_Search_Dir (GNAT.Command_Line.Parameter);
 110
 111             when 'n'    =>
 112                if GNAT.Command_Line.Full_Switch = "nostdinc" then
 113                   Opt.No_Stdinc := True;
 114
 115                elsif GNAT.Command_Line.Full_Switch = "nostlib" then
 116                   Opt.No_Stdlib := True;
 117                end if;
 118
 119             when 'p'    =>
 120                declare
 121                   S : constant String := GNAT.Command_Line.Parameter;
 122
 123                begin
 124                   Prj_File_Length := S'Length;
 125                   Prj_File (1 .. Prj_File_Length) := S;
 126                end;
 127
 128             when 'r'    =>
 129                Output_Ref := True;
 130
 131             when 's' =>
 132                Source_Lines := True;
 133
 134             when 't' =>
 135                Type_Tree := True;
 136
 137             --  Only switch starting with -- recognized is --RTS
 138
 139             when '-'    =>
 140                Opt.No_Stdinc := True;
 141                Opt.RTS_Switch := True;
 142
 143                declare
 144                   Src_Path_Name : String_Ptr :=
 145                                     Get_RTS_Search_Dir
 146                                       (GNAT.Command_Line.Parameter, Include);
 147                   Lib_Path_Name : String_Ptr :=
 148                                     Get_RTS_Search_Dir
 149                                       (GNAT.Command_Line.Parameter, Objects);
 150
 151                begin
 152                   if Src_Path_Name /= null and then Lib_Path_Name /= null then
 153                      Add_Search_Dirs (Src_Path_Name, Include);
 154                      Add_Search_Dirs (Lib_Path_Name, Objects);
 155
 156                   elsif Src_Path_Name = null and then Lib_Path_Name = null then
 157                      Osint.Fail ("RTS path not valid: missing " &
 158                                  "adainclude and adalib directories");
 159
 160                   elsif Src_Path_Name = null then
 161                      Osint.Fail ("RTS path not valid: missing " &
 162                                  "adainclude directory");
 163
 164                   elsif Lib_Path_Name = null then
 165                      Osint.Fail ("RTS path not valid: missing " &
 166                                  "adalib directory");
 167                   end if;
 168                end;
 169
 170             when others =>
 171                Write_Usage;
 172          end case;
 173       end loop;
 174
 175       --  Get the other arguments
 176
 177       loop
 178          declare
 179             S : constant String := GNAT.Command_Line.Get_Argument;
 180
 181          begin
 182             exit when S'Length = 0;
 183
 184             --  First argument is the pattern
 185
 186             if not Have_Entity then
 187                Add_Entity (Pattern, S, Glob_Mode);
 188                Have_Entity := True;
 189
 190                if not Has_File_In_Entity
 191                  and then Index (S, ":") /= 0
 192                then
 193                   Has_File_In_Entity := True;
 194                end if;
 195
 196             --  Next arguments are the files to search
 197             else
 198                Add_Xref_File (S);
 199                Wide_Search := False;
 200                Nb_File := Nb_File + 1;
 201             end if;
 202          end;
 203       end loop;
 204
 205    exception
 206       when GNAT.Command_Line.Invalid_Switch =>
 207          Ada.Text_IO.Put_Line ("Invalid switch : "
 208                                & GNAT.Command_Line.Full_Switch);
 209          Write_Usage;
 210
 211       when GNAT.Command_Line.Invalid_Parameter =>
 212          Ada.Text_IO.Put_Line ("Parameter missing for : "
 213                                & GNAT.Command_Line.Full_Switch);
 214          Write_Usage;
 215
 216       when Xref_Lib.Invalid_Argument =>
 217          Ada.Text_IO.Put_Line ("Invalid line or column in the pattern");
 218          Write_Usage;
 219    end Parse_Cmd_Line;
 220
 221    -----------------
 222    -- Write_Usage --
 223    -----------------
 224
 225    procedure Write_Usage is
 226    begin
 227       Put_Line ("GNATFIND " & Gnatvsn.Gnat_Version_String
 228                 & " Copyright 1998-2002, Ada Core Technologies Inc.");
 229       Put_Line ("Usage: gnatfind pattern[:sourcefile[:line[:column]]] "
 230                 & "[file1 file2 ...]");
 231       New_Line;
 232       Put_Line ("  pattern     Name of the entity to look for (can have "
 233                 & "wildcards)");
 234       Put_Line ("  sourcefile  Only find entities referenced from this "
 235                 & "file");
 236       Put_Line ("  line        Only find entities referenced from this line "
 237                 & "of file");
 238       Put_Line ("  column      Only find entities referenced from this columns"
 239                 & " of file");
 240       Put_Line ("  file ...    Set of Ada source files to search for "
 241                 & "references. This parameters are optional");
 242       New_Line;
 243       Put_Line ("gnatfind switches:");
 244       Put_Line ("   -a        Consider all files, even when the ali file is "
 245                 & "readonly");
 246       Put_Line ("   -aIdir    Specify source files search path");
 247       Put_Line ("   -aOdir    Specify library/object files search path");
 248       Put_Line ("   -d        Output derived type information");
 249       Put_Line ("   -e        Use the full regular expression set for "
 250                 & "pattern");
 251       Put_Line ("   -f        Output full path name");
 252       Put_Line ("   -g        Output information only for global symbols");
 253       Put_Line ("   -Idir     Like -aIdir -aOdir");
 254       Put_Line ("   -nostdinc Don't look for sources in the system default"
 255                 & " directory");
 256       Put_Line ("   -nostdlib Don't look for library files in the system"
 257                 & " default directory");
 258       Put_Line ("   --RTS=dir specify the default source and object search"
 259                 & " path");
 260       Put_Line ("   -p file   Use file as the default project file");
 261       Put_Line ("   -r        Find all references (default to find declaration"
 262                 & " only)");
 263       Put_Line ("   -s        Print source line");
 264       Put_Line ("   -t        Print type hierarchy");
 265       New_Line;
 266
 267       raise Usage_Error;
 268    end Write_Usage;
 269
 270 --  Start of processing for Gnatfind
 271
 272 begin
 273    Parse_Cmd_Line;
 274
 275    if not Have_Entity then
 276       Write_Usage;
 277    end if;
 278
 279    --  Special case to speed things up: if the user has a command line of the
 280    --  form 'gnatfind entity:file', ie has specified a file and only wants the
 281    --  bodies and specs, then we can restrict the search to the .ali file
 282    --  associated with 'file'.
 283
 284    if Has_File_In_Entity
 285      and then not Output_Ref
 286    then
 287       Wide_Search := False;
 288    end if;
 289
 290    --  Find the project file
 291
 292    if Prj_File_Length = 0 then
 293       Xr_Tabls.Create_Project_File (Default_Project_File ("."));
 294    else
 295       Xr_Tabls.Create_Project_File (Prj_File (1 .. Prj_File_Length));
 296    end if;
 297
 298    --  Fill up the table
 299
 300    if Type_Tree and then Nb_File > 1 then
 301       Ada.Text_IO.Put_Line ("Error: for type hierarchy output you must "
 302                             & "specify only one file.");
 303       Ada.Text_IO.New_Line;
 304       Write_Usage;
 305    end if;
 306
 307    Search (Pattern, Local_Symbols, Wide_Search, Read_Only,
 308            Der_Info, Type_Tree);
 309
 310    if Source_Lines then
 311       Xr_Tabls.Grep_Source_Files;
 312    end if;
 313
 314    Print_Gnatfind (Output_Ref, Full_Path_Name);
 315
 316 exception
 317    when Usage_Error =>
 318       null;
 319 end Gnatfind;