339 lines
11 KiB
Ada
339 lines
11 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- G N A T X R E F --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 1998-2015, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING3. If not, go to --
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-- http://www.gnu.org/licenses for a complete copy of the license. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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with Opt;
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with Osint; use Osint;
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with Types; use Types;
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with Switch; use Switch;
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with Xr_Tabls; use Xr_Tabls;
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with Xref_Lib; use Xref_Lib;
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with Ada.Command_Line; use Ada.Command_Line;
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with Ada.Strings.Fixed; use Ada.Strings.Fixed;
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with Ada.Text_IO; use Ada.Text_IO;
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with GNAT.Command_Line; use GNAT.Command_Line;
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with System.Strings; use System.Strings;
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procedure Gnatxref is
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Search_Unused : Boolean := False;
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Local_Symbols : Boolean := True;
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Prj_File : File_Name_String;
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Prj_File_Length : Natural := 0;
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Usage_Error : exception;
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Full_Path_Name : Boolean := False;
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Vi_Mode : Boolean := False;
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Read_Only : Boolean := False;
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Have_File : Boolean := False;
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Der_Info : Boolean := False;
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RTS_Specified : String_Access := null;
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-- Used to detect multiple use of --RTS= switch
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EXT_Specified : String_Access := null;
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-- Used to detect multiple use of --ext= switch
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procedure Parse_Cmd_Line;
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-- Parse every switch on the command line
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procedure Usage;
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-- Display the usage
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procedure Write_Usage;
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-- Print a small help page for program usage
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--------------------
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-- Parse_Cmd_Line --
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--------------------
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procedure Parse_Cmd_Line is
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procedure Check_Version_And_Help is new Check_Version_And_Help_G (Usage);
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-- Start of processing for Parse_Cmd_Line
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begin
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-- First check for --version or --help
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Check_Version_And_Help ("GNATXREF", "1998");
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loop
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case
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GNAT.Command_Line.Getopt
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("a aI: aO: d f g h I: nostdinc nostdlib p: u v -RTS= -ext=")
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is
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when ASCII.NUL =>
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exit;
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when 'a' =>
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if GNAT.Command_Line.Full_Switch = "a" then
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Read_Only := True;
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elsif GNAT.Command_Line.Full_Switch = "aI" then
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Osint.Add_Src_Search_Dir (GNAT.Command_Line.Parameter);
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else
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Osint.Add_Lib_Search_Dir (GNAT.Command_Line.Parameter);
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end if;
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when 'd' =>
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Der_Info := True;
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when 'f' =>
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Full_Path_Name := True;
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when 'g' =>
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Local_Symbols := False;
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when 'h' =>
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Write_Usage;
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when 'I' =>
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Osint.Add_Src_Search_Dir (GNAT.Command_Line.Parameter);
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Osint.Add_Lib_Search_Dir (GNAT.Command_Line.Parameter);
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when 'n' =>
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if GNAT.Command_Line.Full_Switch = "nostdinc" then
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Opt.No_Stdinc := True;
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elsif GNAT.Command_Line.Full_Switch = "nostdlib" then
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Opt.No_Stdlib := True;
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end if;
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when 'p' =>
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declare
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S : constant String := GNAT.Command_Line.Parameter;
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begin
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Prj_File_Length := S'Length;
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Prj_File (1 .. Prj_File_Length) := S;
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end;
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when 'u' =>
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Search_Unused := True;
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Vi_Mode := False;
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when 'v' =>
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Vi_Mode := True;
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Search_Unused := False;
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-- The only switch starting with -- recognized is --RTS
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when '-' =>
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-- Check that it is the first time we see this switch
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if Full_Switch = "-RTS" then
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if RTS_Specified = null then
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RTS_Specified := new String'(GNAT.Command_Line.Parameter);
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elsif RTS_Specified.all /= GNAT.Command_Line.Parameter then
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Osint.Fail ("--RTS cannot be specified multiple times");
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end if;
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Opt.No_Stdinc := True;
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Opt.RTS_Switch := True;
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declare
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Src_Path_Name : constant String_Ptr :=
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Get_RTS_Search_Dir
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(GNAT.Command_Line.Parameter,
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Include);
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Lib_Path_Name : constant String_Ptr :=
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Get_RTS_Search_Dir
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(GNAT.Command_Line.Parameter,
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Objects);
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begin
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if Src_Path_Name /= null
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and then Lib_Path_Name /= null
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then
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Add_Search_Dirs (Src_Path_Name, Include);
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Add_Search_Dirs (Lib_Path_Name, Objects);
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elsif Src_Path_Name = null
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and then Lib_Path_Name = null
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then
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Osint.Fail
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("RTS path not valid: missing adainclude and "
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& "adalib directories");
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elsif Src_Path_Name = null then
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Osint.Fail
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("RTS path not valid: missing adainclude directory");
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elsif Lib_Path_Name = null then
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Osint.Fail
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("RTS path not valid: missing adalib directory");
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end if;
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end;
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elsif GNAT.Command_Line.Full_Switch = "-ext" then
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-- Check that it is the first time we see this switch
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if EXT_Specified = null then
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EXT_Specified := new String'(GNAT.Command_Line.Parameter);
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elsif EXT_Specified.all /= GNAT.Command_Line.Parameter then
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Osint.Fail ("--ext cannot be specified multiple times");
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end if;
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if EXT_Specified'Length = Osint.ALI_Default_Suffix'Length
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then
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Osint.ALI_Suffix := EXT_Specified.all'Access;
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else
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Osint.Fail ("--ext argument must have 3 characters");
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end if;
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end if;
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when others =>
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Try_Help;
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raise Usage_Error;
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end case;
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end loop;
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-- Get the other arguments
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loop
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declare
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S : constant String := GNAT.Command_Line.Get_Argument;
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begin
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exit when S'Length = 0;
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if Ada.Strings.Fixed.Index (S, ":") /= 0 then
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Ada.Text_IO.Put_Line
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("Only file names are allowed on the command line");
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Try_Help;
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raise Usage_Error;
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end if;
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Add_Xref_File (S);
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Have_File := True;
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end;
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end loop;
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exception
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when GNAT.Command_Line.Invalid_Switch =>
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Ada.Text_IO.Put_Line ("Invalid switch : "
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& GNAT.Command_Line.Full_Switch);
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Try_Help;
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raise Usage_Error;
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when GNAT.Command_Line.Invalid_Parameter =>
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Ada.Text_IO.Put_Line ("Parameter missing for : "
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& GNAT.Command_Line.Full_Switch);
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Try_Help;
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raise Usage_Error;
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end Parse_Cmd_Line;
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-----------
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-- Usage --
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-----------
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procedure Usage is
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begin
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Put_Line ("Usage: gnatxref [switches] file1 file2 ...");
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New_Line;
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Put_Line (" file ... list of source files to xref, " &
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"including with'ed units");
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New_Line;
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Put_Line ("gnatxref switches:");
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Display_Usage_Version_And_Help;
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Put_Line (" -a Consider all files, even when the ali file is"
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& " readonly");
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Put_Line (" -aIdir Specify source files search path");
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Put_Line (" -aOdir Specify library/object files search path");
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Put_Line (" -d Output derived type information");
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Put_Line (" -f Output full path name");
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Put_Line (" -g Output information only for global symbols");
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Put_Line (" -Idir Like -aIdir -aOdir");
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Put_Line (" -nostdinc Don't look for sources in the system default"
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& " directory");
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Put_Line (" -nostdlib Don't look for library files in the system"
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& " default directory");
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Put_Line (" --ext=xxx Specify alternate ali file extension");
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Put_Line (" --RTS=dir specify the default source and object search"
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& " path");
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Put_Line (" -p file Use file as the default project file");
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Put_Line (" -u List unused entities");
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Put_Line (" -v Print a 'tags' file for vi");
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New_Line;
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end Usage;
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-----------------
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-- Write_Usage --
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-----------------
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procedure Write_Usage is
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begin
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Display_Version ("GNATXREF", "1998");
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New_Line;
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Usage;
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raise Usage_Error;
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end Write_Usage;
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begin
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Parse_Cmd_Line;
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if not Have_File then
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if Argument_Count = 0 then
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Write_Usage;
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else
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Try_Help;
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raise Usage_Error;
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end if;
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end if;
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Xr_Tabls.Set_Default_Match (True);
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-- Find the project file
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if Prj_File_Length = 0 then
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Xr_Tabls.Create_Project_File
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(Default_Project_File (Osint.To_Host_Dir_Spec (".", False).all));
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else
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Xr_Tabls.Create_Project_File (Prj_File (1 .. Prj_File_Length));
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end if;
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-- Fill up the table
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Search_Xref (Local_Symbols, Read_Only, Der_Info);
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if Search_Unused then
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Print_Unused (Full_Path_Name);
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elsif Vi_Mode then
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Print_Vi (Full_Path_Name);
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else
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Print_Xref (Full_Path_Name);
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end if;
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exception
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when Usage_Error =>
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null;
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end Gnatxref;
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