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+------------------------------------------------------------------------------
+-- --
+-- GNAT COMPILER COMPONENTS --
+-- --
+-- G N A T X R E F --
+-- --
+-- B o d y --
+-- --
+-- Copyright (C) 1998-2007, 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 3, 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 COPYING3. If not, go to --
+-- http://www.gnu.org/licenses for a complete copy of the license. --
+-- --
+-- GNAT was originally developed by the GNAT team at New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc. --
+-- --
+------------------------------------------------------------------------------
+
+with Opt;
+with Osint; use Osint;
+with Types; use Types;
+with Switch; use Switch;
+with Xr_Tabls; use Xr_Tabls;
+with Xref_Lib; use Xref_Lib;
+
+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 System.Strings; use System.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 Usage;
+ -- Display the usage
+
+ procedure Write_Usage;
+ -- Print a small help page for program usage
+
+ --------------------
+ -- Parse_Cmd_Line --
+ --------------------
+
+ procedure Parse_Cmd_Line is
+
+ procedure Check_Version_And_Help is new Check_Version_And_Help_G (Usage);
+
+ -- Start of processing for Parse_Cmd_Line
+
+ begin
+ -- First check for --version or --help
+
+ Check_Version_And_Help ("GNATXREF", "1998");
+
+ 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;
+
+ -----------
+ -- Usage --
+ -----------
+
+ procedure Usage is
+ begin
+ 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;
+
+ end Usage;
+
+ -----------------
+ -- Write_Usage --
+ -----------------
+
+ procedure Write_Usage is
+ begin
+ Display_Version ("GNATXREF", "1998");
+ New_Line;
+ Usage;
+ 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;