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------------------------------------------------------------------------------ -- -- -- GNAT RUN-TIME COMPONENTS -- -- -- -- A D A . C O M M A N D _ L I N E . R E M O V E -- -- -- -- S p e c -- -- -- -- Copyright (C) 1999-2009, 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. -- -- -- -- As a special exception under Section 7 of GPL version 3, you are granted -- -- additional permissions described in the GCC Runtime Library Exception, -- -- version 3.1, as published by the Free Software Foundation. -- -- -- -- You should have received a copy of the GNU General Public License and -- -- a copy of the GCC Runtime Library Exception along with this program; -- -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- -- <http://www.gnu.org/licenses/>. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- This package is intended to be used in conjunction with its parent unit, -- Ada.Command_Line. It provides facilities for logically removing arguments -- from the command line, so that subsequent calls to Argument_Count and -- Argument will reflect the removals. -- For example, if the original command line has three arguments A B C, so -- that Argument_Count is initially three, then after removing B, the second -- argument, Argument_Count will be 2, and Argument (2) will return C. package Ada.Command_Line.Remove is pragma Preelaborate; procedure Remove_Argument (Number : Positive); -- Removes the argument identified by Number, which must be in the -- range 1 .. Argument_Count (i.e. an in range argument number which -- reflects removals). If Number is out of range Constraint_Error -- will be raised. -- -- Note: the numbering of arguments greater than Number is affected -- by the call. If you need a loop through the arguments, removing -- some as you go, run the loop in reverse to avoid confusion from -- this renumbering: -- -- for J in reverse 1 .. Argument_Count loop -- if Should_Remove (Arguments (J)) then -- Remove_Argument (J); -- end if; -- end loop; -- -- Reversing the loop in this manner avoids the confusion. procedure Remove_Arguments (From : Positive; To : Natural); -- Removes arguments in the given From..To range. From must be in the -- range 1 .. Argument_Count and To in the range 0 .. Argument_Count. -- Constraint_Error is raised if either argument is out of range. If -- To is less than From, then the call has no effect. procedure Remove_Argument (Argument : String); -- Removes the argument which matches the given string Argument. Has -- no effect if no argument matches the string. If more than one -- argument matches the string, all are removed. procedure Remove_Arguments (Argument_Prefix : String); -- Removes all arguments whose prefix matches Argument_Prefix. Has -- no effect if no argument matches the string. For example a call -- to Remove_Arguments ("--") removes all arguments starting with --. end Ada.Command_Line.Remove;