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------------------------------------------------------------------------------
-- --
-- GNAT RUNTIME COMPONENTS --
-- --
-- A D A . C O M M A N D _ L I N E --
-- --
-- S p e c --
-- --
-- $Revision: 1.8 $ --
-- --
-- This specification is adapted from the Ada Reference Manual for use with --
-- GNAT. In accordance with the copyright of that document, you can freely --
-- copy and modify this specification, provided that if you redistribute a --
-- modified version, any changes that you have made are clearly indicated. --
-- --
------------------------------------------------------------------------------
package Ada.Command_Line is
pragma Preelaborate (Command_Line);
function Argument_Count return Natural;
-- If the external execution environment supports passing arguments to a
-- program, then Argument_Count returns the number of arguments passed to
-- the program invoking the function. Otherwise it return 0.
--
-- In GNAT: Corresponds to (argc - 1) in C.
function Argument (Number : in Positive) return String;
-- If the external execution environment supports passing arguments to
-- a program, then Argument returns an implementation-defined value
-- corresponding to the argument at relative position Number. If Number
-- is outside the range 1 .. Argument_Count, then Constraint_Error is
-- propagated.
--
-- in GNAT: Corresponds to argv [n] (for n > 0) in C.
function Command_Name return String;
-- If the external execution environment supports passing arguments to
-- a program, then Command_Name returns an implementation-defined value
-- corresponding to the name of the command invoking the program.
-- Otherwise Command_Name returns the null string.
--
-- in GNAT: Corresponds to argv [0] in C.
type Exit_Status is new Integer;
Success : constant Exit_Status;
Failure : constant Exit_Status;
procedure Set_Exit_Status (Code : in Exit_Status);
pragma Import (C, Set_Exit_Status, "set_gnat_exit_status");
private
Success : constant Exit_Status := 0;
Failure : constant Exit_Status := 1;
-- ??? Later these will be properly handled through Import variables.
end Ada.Command_Line;
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