git://gcc.gnu.org / gcc.git / blame
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1 | ------------------------------------------------------------------------------ |
| 2 | -- -- | |
| 3 | -- GNAT RUNTIME COMPONENTS -- | |
| 4 | -- -- | |
| 5 | -- A D A . C O M M A N D _ L I N E . E N V I R O N M E N T -- | |
| 6 | -- -- | |
| 7 | -- S p e c -- | |
| 8 | -- -- | |
| fbf5a39b | 9 | -- Copyright (C) 1996-2002 Free Software Foundation, Inc. -- |
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10 | -- -- |
| 11 | -- GNAT is free software; you can redistribute it and/or modify it under -- | |
| 12 | -- terms of the GNU General Public License as published by the Free Soft- -- | |
| 13 | -- ware Foundation; either version 2, or (at your option) any later ver- -- | |
| 14 | -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- | |
| 15 | -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- | |
| 16 | -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- | |
| 17 | -- for more details. You should have received a copy of the GNU General -- | |
| 18 | -- Public License distributed with GNAT; see file COPYING. If not, write -- | |
| 19 | -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- | |
| 20 | -- MA 02111-1307, USA. -- | |
| 21 | -- -- | |
| 22 | -- As a special exception, if other files instantiate generics from this -- | |
| 23 | -- unit, or you link this unit with other files to produce an executable, -- | |
| 24 | -- this unit does not by itself cause the resulting executable to be -- | |
| 25 | -- covered by the GNU General Public License. This exception does not -- | |
| 26 | -- however invalidate any other reasons why the executable file might be -- | |
| 27 | -- covered by the GNU Public License. -- | |
| 28 | -- -- | |
| 29 | -- GNAT was originally developed by the GNAT team at New York University. -- | |
| 71ff80dc | 30 | -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
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31 | -- -- |
| 32 | ------------------------------------------------------------------------------ | |
| 33 | ||
| fbf5a39b AC |
34 | -- Note: Services offered by this package are guaranteed to be platform |
| 35 | -- independent as long as no call to GNAT.OS_Lib.Setenv or to C putenv | |
| 36 | -- routine is done. On some platforms the services below will report new | |
| 37 | -- environment variables (e.g. Windows) on some others it will not | |
| 38 | -- (e.g. GNU/Linux and Solaris). | |
| 39 | ||
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40 | package Ada.Command_Line.Environment is |
| 41 | ||
| 42 | function Environment_Count return Natural; | |
| 43 | -- If the external execution environment supports passing the environment | |
| 44 | -- to a program, then Environment_Count returns the number of environment | |
| 45 | -- variables in the environment of the program invoking the function. | |
| 46 | -- Otherwise it returns 0. And that's a lot of environment. | |
| 47 | ||
| 48 | function Environment_Value (Number : in Positive) return String; | |
| 49 | -- If the external execution environment supports passing the environment | |
| 50 | -- to a program, then Environment_Value returns an implementation-defined | |
| 51 | -- value corresponding to the value at relative position Number. If Number | |
| 52 | -- is outside the range 1 .. Environment_Count, then Constraint_Error is | |
| 53 | -- propagated. | |
| 54 | -- | |
| 55 | -- in GNAT: Corresponds to envp [n-1] (for n > 0) in C. | |
| 56 | ||
| 57 | end Ada.Command_Line.Environment; |