gcc/ada/argv.c

   1 /****************************************************************************
   2  *                                                                          *
   3  *                         GNAT COMPILER COMPONENTS                         *
   4  *                                                                          *
   5  *                                A R G V                                   *
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   7  *                          C Implementation File                           *
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  10  *         Copyright (C) 1992-2001 Free Software Foundation, Inc.           *
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  26  * ion does not  however invalidate  any other reasons  why the  executable *
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  29  * GNAT was originally developed  by the GNAT team at  New York University. *
  30  * It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). *
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  32  ****************************************************************************/
  33
  34 /* Routines for accessing command line arguments from both the runtime
  35    library and from the compiler itself. In the former case, gnat_argc
  36    and gnat_argv are the original argc and argv values as stored by the
  37    binder generated main program, and these routines are accessed from
  38    the Ada.Command_Line package. In the compiler case, gnat_argc and
  39    gnat_argv are the values as modified by toplev, and these routines
  40    are accessed from the Osint package. */
  41
  42 /* Also routines for accessing the environment from the runtime library.
  43    Gnat_envp is the original envp value as stored by the binder generated
  44    main program, and these routines are accessed from the
  45    Ada.Command_Line.Environment package. */
  46
  47 #ifdef IN_RTS
  48 #include "tconfig.h"
  49 #include "tsystem.h"
  50 #include <sys/stat.h>
  51 #else
  52 #include "config.h"
  53 #include "system.h"
  54 #endif
  55
  56 #include "adaint.h"
  57
  58 /* argc and argv of the main program are saved under gnat_argc and gnat_argv,
  59    envp of the main program is saved under gnat_envp.  */
  60
  61 int gnat_argc = 0;
  62 const char **gnat_argv = (const char **) 0;
  63 const char **gnat_envp = (const char **) 0;
  64
  65 int
  66 __gnat_arg_count ()
  67 {
  68   return gnat_argc;
  69 }
  70
  71 int
  72 __gnat_len_arg (arg_num)
  73    int arg_num;
  74 {
  75   return strlen (gnat_argv[arg_num]);
  76 }
  77
  78 void
  79 __gnat_fill_arg (a, i)
  80    char *a;
  81    int i;
  82 {
  83   strncpy (a, gnat_argv[i], strlen(gnat_argv[i]));
  84 }
  85
  86 int
  87 __gnat_env_count ()
  88 {
  89   int i;
  90
  91   for (i = 0; gnat_envp[i]; i++)
  92     ;
  93   return i;
  94 }
  95
  96 int
  97 __gnat_len_env (env_num)
  98    int env_num;
  99 {
 100   return strlen (gnat_envp[env_num]);
 101 }
 102
 103 void
 104 __gnat_fill_env (a, i)
 105    char *a;
 106    int i;
 107 {
 108   strncpy (a, gnat_envp[i], strlen (gnat_envp[i]));
 109 }