projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 3c777b50 AC |
1 | ------------------------------------------------------------------------------ |
| 2 | -- -- | |
| 3 | -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- | |
| 4 | -- -- | |
| 5 | -- G N A T . B I N D _ E N V I R O N M E N T -- | |
| 6 | -- -- | |
| 7 | -- B o d y -- | |
| 8 | -- -- | |
| 4b490c1e | 9 | -- Copyright (C) 2015-2020, Free Software Foundation, Inc. -- |
| 3c777b50 AC |
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 3, 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. -- | |
| 17 | -- -- | |
| 18 | -- As a special exception under Section 7 of GPL version 3, you are granted -- | |
| 19 | -- additional permissions described in the GCC Runtime Library Exception, -- | |
| 20 | -- version 3.1, as published by the Free Software Foundation. -- | |
| 21 | -- -- | |
| 22 | -- You should have received a copy of the GNU General Public License and -- | |
| 23 | -- a copy of the GCC Runtime Library Exception along with this program; -- | |
| 24 | -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- | |
| 25 | -- <http://www.gnu.org/licenses/>. -- | |
| 26 | -- -- | |
| 27 | -- GNARL was developed by the GNARL team at Florida State University. -- | |
| 28 | -- Extensive contributions were provided by AdaCore. -- | |
| 29 | -- -- | |
| 30 | ------------------------------------------------------------------------------ | |
| 31 | ||
| 32 | with System; | |
| 33 | ||
| 34 | package body GNAT.Bind_Environment is | |
| 35 | ||
| 36 | --------- | |
| 37 | -- Get -- | |
| 38 | --------- | |
| 39 | ||
| 40 | function Get (Key : String) return String is | |
| 41 | use type System.Address; | |
| 42 | ||
| 43 | Bind_Env_Addr : System.Address; | |
| 44 | pragma Import (C, Bind_Env_Addr, "__gl_bind_env_addr"); | |
| 45 | -- Variable provided by init.c/s-init.ads, and initialized by | |
| 46 | -- the binder generated file. | |
| 47 | ||
| 48 | Bind_Env : String (Positive); | |
| 49 | for Bind_Env'Address use Bind_Env_Addr; | |
| 50 | pragma Import (Ada, Bind_Env); | |
| 51 | -- Import Bind_Env string from binder file. Note that we import | |
| 52 | -- it here as a string with maximum boundaries. The "real" end | |
| 53 | -- of the string is indicated by a NUL byte. | |
| 54 | ||
| 55 | Index, KLen, VLen : Integer; | |
| 56 | ||
| 57 | begin | |
| 58 | if Bind_Env_Addr = System.Null_Address then | |
| 59 | return ""; | |
| 60 | end if; | |
| 61 | ||
| 62 | Index := Bind_Env'First; | |
| 63 | loop | |
| 64 | -- Index points to key length | |
| 65 | ||
| 66 | VLen := 0; | |
| 67 | KLen := Character'Pos (Bind_Env (Index)); | |
| 68 | exit when KLen = 0; | |
| 69 | ||
| 70 | Index := Index + KLen + 1; | |
| 71 | ||
| 72 | -- Index points to value length | |
| 73 | ||
| 74 | VLen := Character'Pos (Bind_Env (Index)); | |
| 75 | exit when Bind_Env (Index - KLen .. Index - 1) = Key; | |
| 76 | ||
| 77 | Index := Index + VLen + 1; | |
| 78 | end loop; | |
| 79 | ||
| 80 | return Bind_Env (Index + 1 .. Index + VLen); | |
| 81 | end Get; | |
| 82 | ||
| 83 | end GNAT.Bind_Environment; |