reactos/lib/crtdll/misc/init.c

   1 /*
   2  * init.c
   3  *
   4  * Code to initialize standard file handles and command line arguments.
   5  * This file is #included in both crt1.c and dllcrt1.c.
   6  *
   7  * This file is part of the Mingw32 package.
   8  *
   9  * Contributors:
  10  *  Created by Colin Peters <colin@bird.fu.is.saga-u.ac.jp>
  11  *
  12  *  THIS SOFTWARE IS NOT COPYRIGHTED
  13  *
  14  *  This source code is offered for use in the public domain. You may
  15  *  use, modify or distribute it freely.
  16  *
  17  *  This code is distributed in the hope that it will be useful but
  18  *  WITHOUT ANY WARRANTY. ALL WARRENTIES, EXPRESS OR IMPLIED ARE HEREBY
  19  *  DISCLAMED. This includes but is not limited to warrenties of
  20  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  21  *
  22  * $Revision: 1.4 $
  23  * $Author$
  24  * $Date$
  25  *
  26  */
  27
  28 /*
  29  * Access to a standard 'main'-like argument count and list. Also included
  30  * is a table of environment variables.
  31  */
  32 int _argc = 0;
  33 char**  _argv = 0;
  34
  35 /* NOTE: Thanks to Pedro A. Aranda Gutiirrez <paag@tid.es> for pointing
  36  * this out to me. GetMainArgs (used below) takes a fourth argument
  37  * which is an int that controls the globbing of the command line. If
  38  * _CRT_glob is non-zero the command line will be globbed (e.g. *.*
  39  * expanded to be all files in the startup directory). In the mingw32
  40  * library a _CRT_glob variable is defined as being -1, enabling
  41  * this command line globbing by default. To turn it off and do all
  42  * command line processing yourself (and possibly escape bogons in
  43  * MS's globbing code) include a line in one of your source modules
  44  * defining _CRT_glob and setting it to zero, like this:
  45  *  int _CRT_glob = 0;
  46  */
  47 extern int  _CRT_glob;
  48
  49 extern void __GetMainArgs(int *, char***, char***, int);
  50
  51 /*
  52  * Initialize the _argc, _argv and environ variables.
  53  */
  54 static void
  55 _mingw32_init_mainargs (void)
  56 {
  57     /* The environ variable is provided directly in stdlib.h through
  58      * a dll function call. */
  59     char**  dummy_environ;
  60
  61     /*
  62      * Microsoft's runtime provides a function for doing just that.
  63      */
  64 #ifdef _MSVCRT_LIB_
  65     (void) __getmainargs(&_argc, &_argv, &dummy_environ, _CRT_glob);
  66 #else
  67     /* CRTDLL version */
  68     (void) __GetMainArgs(&_argc, &_argv, &dummy_environ, _CRT_glob);
  69 #endif
  70 }
  71