src/shared/envvars.pas

   1 (* Copyright (C)  DooM 2D:Forever Developers
   2  *
   3  * This program is free software: you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation, either version 3 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15  *)
  16 {$MODE OBJFPC}
  17 unit envvars;
  18
  19 interface
  20
  21 uses SysUtils, CTypes;
  22
  23 function SetEnvVar(const VarName: AnsiString; const VarVal: AnsiString): Boolean;
  24
  25 implementation
  26
  27 {$IFDEF WINDOWS}
  28 uses Windows;
  29 function setenv(const VarStr: PChar; const VarVal: PChar; Repl: cint): cint;
  30 begin
  31   if (SetEnvironmentVariable(VarStr, VarVal)) then
  32     Result := 0
  33   else
  34     Result := -1;
  35 end;
  36 {$ELSE}
  37 {$LINKLIB c}
  38 const clib = 'c';
  39 function setenv(const VarStr: PChar; const VarVal: PChar; Repl: cint): cint;
  40 cdecl; external clib name 'setenv';
  41 {$ENDIF}
  42
  43 function SetEnvVar(const VarName: AnsiString; const VarVal: AnsiString): Boolean;
  44 begin
  45   Result := (setenv(PChar(VarName), PChar(VarVal), 1) = 0);
  46 end;
  47
  48 end.