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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- G N A T X R E F --
-- --
-- B o d y --
-- --
-- Copyright (C) 1998-2010, 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
EXT_Specified : String_Access := null;
-- Used to detect multiple use of --ext= 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= -ext=")
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 = "nostdlib" 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 Full_Switch = "-RTS" then
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;
elsif GNAT.Command_Line.Full_Switch = "-ext" then
-- Check that it is the first time we see this switch
if EXT_Specified = null then
EXT_Specified := new String'(GNAT.Command_Line.Parameter);
elsif EXT_Specified.all /= GNAT.Command_Line.Parameter then
Osint.Fail ("--ext cannot be specified multiple times");
end if;
if EXT_Specified'Length
= Osint.ALI_Default_Suffix'Length
then
Osint.ALI_Suffix := EXT_Specified.all'Access;
else
Osint.Fail ("--ext argument must have 3 characters");
end if;
end if;
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 (" --ext=xxx Specify alternate ali file extension");
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;
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