summaryrefslogtreecommitdiff
path: root/gcc/ada/gnatxref.adb
blob: 12482681ad8c1faba7f313858001f2d162e7179f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
------------------------------------------------------------------------------
--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
--                                                                          --
--                             G N A T X R E F                              --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--         Copyright (C) 1998-2004 Free Software Foundation, Inc.           --
--                                                                          --
-- GNAT is free software;  you can  redistribute it  and/or modify it under --
-- terms of the  GNU General Public License as published  by the Free Soft- --
-- ware  Foundation;  either version 2,  or (at your option) any later ver- --
-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
-- for  more details.  You should have  received  a copy of the GNU General --
-- Public License  distributed with GNAT;  see file COPYING.  If not, write --
-- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
-- Boston, MA 02110-1301, USA.                                              --
--                                                                          --
-- GNAT was originally developed  by the GNAT team at  New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc.      --
--                                                                          --
------------------------------------------------------------------------------

with Xr_Tabls; use Xr_Tabls;
with Xref_Lib; use Xref_Lib;
with Osint;    use Osint;
with Types;    use Types;

with Gnatvsn;
with Opt;

with Ada.Strings.Fixed; use Ada.Strings.Fixed;
with Ada.Text_IO;       use Ada.Text_IO;
with GNAT.Command_Line; use GNAT.Command_Line;
with GNAT.Strings;      use GNAT.Strings;

procedure Gnatxref is
   Search_Unused   : Boolean := False;
   Local_Symbols   : Boolean := True;
   Prj_File        : File_Name_String;
   Prj_File_Length : Natural := 0;
   Usage_Error     : exception;
   Full_Path_Name  : Boolean := False;
   Vi_Mode         : Boolean := False;
   Read_Only       : Boolean := False;
   Have_File       : Boolean := False;
   Der_Info        : Boolean := False;

   RTS_Specified : String_Access := null;
   --  Used to detect multiple use of --RTS= switch

   procedure Parse_Cmd_Line;
   --  Parse every switch on the command line

   procedure Write_Usage;
   --  Print a small help page for program usage

   --------------------
   -- Parse_Cmd_Line --
   --------------------

   procedure Parse_Cmd_Line is
   begin
      loop
         case
           GNAT.Command_Line.Getopt
             ("a aI: aO: d f g h I: nostdinc nostdlib p: u v -RTS=")
         is
            when ASCII.NUL =>
               exit;

            when 'a' =>
               if GNAT.Command_Line.Full_Switch = "a" then
                  Read_Only := True;

               elsif GNAT.Command_Line.Full_Switch = "aI" then
                  Osint.Add_Src_Search_Dir (GNAT.Command_Line.Parameter);

               else
                  Osint.Add_Lib_Search_Dir (GNAT.Command_Line.Parameter);
               end if;

            when 'd' =>
               Der_Info := True;

            when 'f' =>
               Full_Path_Name := True;

            when 'g' =>
               Local_Symbols := False;

            when 'h' =>
               Write_Usage;

            when 'I' =>
               Osint.Add_Src_Search_Dir (GNAT.Command_Line.Parameter);
               Osint.Add_Lib_Search_Dir (GNAT.Command_Line.Parameter);

            when 'n' =>
               if GNAT.Command_Line.Full_Switch = "nostdinc" then
                  Opt.No_Stdinc := True;
               elsif GNAT.Command_Line.Full_Switch = "nostlib" then
                  Opt.No_Stdlib := True;
               end if;

            when 'p' =>
               declare
                  S : constant String := GNAT.Command_Line.Parameter;
               begin
                  Prj_File_Length := S'Length;
                  Prj_File (1 .. Prj_File_Length) := S;
               end;

            when 'u' =>
               Search_Unused := True;
               Vi_Mode := False;

            when 'v' =>
               Vi_Mode := True;
               Search_Unused := False;

            --  The only switch starting with -- recognized is --RTS

            when '-' =>

               --  Check that it is the first time we see this switch

               if RTS_Specified = null then
                  RTS_Specified := new String'(GNAT.Command_Line.Parameter);

               elsif RTS_Specified.all /= GNAT.Command_Line.Parameter then
                  Osint.Fail ("--RTS cannot be specified multiple times");
               end if;

               Opt.No_Stdinc  := True;
               Opt.RTS_Switch := True;

               declare
                  Src_Path_Name : constant String_Ptr :=
                                    Get_RTS_Search_Dir
                                      (GNAT.Command_Line.Parameter, Include);

                  Lib_Path_Name : constant String_Ptr :=
                                    Get_RTS_Search_Dir
                                      (GNAT.Command_Line.Parameter, Objects);

               begin
                  if Src_Path_Name /= null and then Lib_Path_Name /= null then
                     Add_Search_Dirs (Src_Path_Name, Include);
                     Add_Search_Dirs (Lib_Path_Name, Objects);

                  elsif Src_Path_Name = null and then Lib_Path_Name = null then
                     Osint.Fail ("RTS path not valid: missing " &
                                 "adainclude and adalib directories");

                  elsif Src_Path_Name = null then
                     Osint.Fail ("RTS path not valid: missing " &
                                 "adainclude directory");

                  elsif  Lib_Path_Name = null then
                     Osint.Fail ("RTS path not valid: missing " &
                                 "adalib directory");
                  end if;
               end;

            when others =>
               Write_Usage;
         end case;
      end loop;

      --  Get the other arguments

      loop
         declare
            S : constant String := GNAT.Command_Line.Get_Argument;

         begin
            exit when S'Length = 0;

            if Ada.Strings.Fixed.Index (S, ":") /= 0 then
               Ada.Text_IO.Put_Line
                 ("Only file names are allowed on the command line");
               Write_Usage;
            end if;

            Add_Xref_File (S);
            Have_File := True;
         end;
      end loop;

   exception
      when GNAT.Command_Line.Invalid_Switch =>
         Ada.Text_IO.Put_Line ("Invalid switch : "
                               & GNAT.Command_Line.Full_Switch);
         Write_Usage;

      when GNAT.Command_Line.Invalid_Parameter =>
         Ada.Text_IO.Put_Line ("Parameter missing for : "
                               & GNAT.Command_Line.Full_Switch);
         Write_Usage;
   end Parse_Cmd_Line;

   -----------------
   -- Write_Usage --
   -----------------

   procedure Write_Usage is
   begin
      Put_Line ("GNATXREF " & Gnatvsn.Gnat_Version_String);
      Put_Line ("Copyright 1998-2004, Ada Core Technologies Inc.");
      Put_Line ("Usage: gnatxref [switches] file1 file2 ...");
      New_Line;
      Put_Line ("  file ... list of source files to xref, " &
                "including with'ed units");
      New_Line;
      Put_Line ("gnatxref switches:");
      Put_Line ("   -a        Consider all files, even when the ali file is"
                & " readonly");
      Put_Line ("   -aIdir    Specify source files search path");
      Put_Line ("   -aOdir    Specify library/object files search path");
      Put_Line ("   -d        Output derived type information");
      Put_Line ("   -f        Output full path name");
      Put_Line ("   -g        Output information only for global symbols");
      Put_Line ("   -Idir     Like -aIdir -aOdir");
      Put_Line ("   -nostdinc Don't look for sources in the system default"
                & " directory");
      Put_Line ("   -nostdlib Don't look for library files in the system"
                & " default directory");
      Put_Line ("   --RTS=dir specify the default source and object search"
                & " path");
      Put_Line ("   -p file   Use file as the default project file");
      Put_Line ("   -u        List unused entities");
      Put_Line ("   -v        Print a 'tags' file for vi");
      New_Line;

      raise Usage_Error;
   end Write_Usage;

begin
   Parse_Cmd_Line;

   if not Have_File then
      Write_Usage;
   end if;

   Xr_Tabls.Set_Default_Match (True);

   --  Find the project file

   if Prj_File_Length = 0 then
      Xr_Tabls.Create_Project_File
        (Default_Project_File (Osint.To_Host_Dir_Spec (".", False).all));
   else
      Xr_Tabls.Create_Project_File (Prj_File (1 .. Prj_File_Length));
   end if;

   --  Fill up the table

   Search_Xref (Local_Symbols, Read_Only, Der_Info);

   if Search_Unused then
      Print_Unused (Full_Path_Name);
   elsif Vi_Mode then
      Print_Vi (Full_Path_Name);
   else
      Print_Xref (Full_Path_Name);
   end if;

exception
   when Usage_Error =>
      null;
end Gnatxref;