intl/printf-args.c

   1 /* Decomposed printf argument list.
   2    Copyright (C) 1999, 2002-2003, 2005-2006 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify it
   5    under the terms of the GNU Library General Public License as published
   6    by the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with this program; if not, write to the Free Software
  16    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  17    USA.  */
  18
  19 #include <config.h>
  20
  21 /* Specification.  */
  22 #include "printf-args.h"
  23
  24 #ifdef STATIC
  25 STATIC
  26 #endif
  27 int
  28 printf_fetchargs (va_list args, arguments *a)
  29 {
  30   size_t i;
  31   argument *ap;
  32
  33   for (i = 0, ap = &a->arg[0]; i < a->count; i++, ap++)
  34     switch (ap->type)
  35       {
  36       case TYPE_SCHAR:
  37         ap->a.a_schar = va_arg (args, /*signed char*/ int);
  38         break;
  39       case TYPE_UCHAR:
  40         ap->a.a_uchar = va_arg (args, /*unsigned char*/ int);
  41         break;
  42       case TYPE_SHORT:
  43         ap->a.a_short = va_arg (args, /*short*/ int);
  44         break;
  45       case TYPE_USHORT:
  46         ap->a.a_ushort = va_arg (args, /*unsigned short*/ int);
  47         break;
  48       case TYPE_INT:
  49         ap->a.a_int = va_arg (args, int);
  50         break;
  51       case TYPE_UINT:
  52         ap->a.a_uint = va_arg (args, unsigned int);
  53         break;
  54       case TYPE_LONGINT:
  55         ap->a.a_longint = va_arg (args, long int);
  56         break;
  57       case TYPE_ULONGINT:
  58         ap->a.a_ulongint = va_arg (args, unsigned long int);
  59         break;
  60 #ifdef HAVE_LONG_LONG_INT
  61       case TYPE_LONGLONGINT:
  62         ap->a.a_longlongint = va_arg (args, long long int);
  63         break;
  64       case TYPE_ULONGLONGINT:
  65         ap->a.a_ulonglongint = va_arg (args, unsigned long long int);
  66         break;
  67 #endif
  68       case TYPE_DOUBLE:
  69         ap->a.a_double = va_arg (args, double);
  70         break;
  71 #ifdef HAVE_LONG_DOUBLE
  72       case TYPE_LONGDOUBLE:
  73         ap->a.a_longdouble = va_arg (args, long double);
  74         break;
  75 #endif
  76       case TYPE_CHAR:
  77         ap->a.a_char = va_arg (args, int);
  78         break;
  79 #ifdef HAVE_WINT_T
  80       case TYPE_WIDE_CHAR:
  81         /* Although ISO C 99 7.24.1.(2) says that wint_t is "unchanged by
  82            default argument promotions", this is not the case in mingw32,
  83            where wint_t is 'unsigned short'.  */
  84         ap->a.a_wide_char =
  85           (sizeof (wint_t) < sizeof (int)
  86            ? va_arg (args, int)
  87            : va_arg (args, wint_t));
  88         break;
  89 #endif
  90       case TYPE_STRING:
  91         ap->a.a_string = va_arg (args, const char *);
  92         /* A null pointer is an invalid argument for "%s", but in practice
  93            it occurs quite frequently in printf statements that produce
  94            debug output.  Use a fallback in this case.  */
  95         if (ap->a.a_string == NULL)
  96           ap->a.a_string = "(NULL)";
  97         break;
  98 #ifdef HAVE_WCHAR_T
  99       case TYPE_WIDE_STRING:
 100         ap->a.a_wide_string = va_arg (args, const wchar_t *);
 101         /* A null pointer is an invalid argument for "%ls", but in practice
 102            it occurs quite frequently in printf statements that produce
 103            debug output.  Use a fallback in this case.  */
 104         if (ap->a.a_wide_string == NULL)
 105           {
 106             static const wchar_t wide_null_string[] =
 107               {
 108                 (wchar_t)'(',
 109                 (wchar_t)'N', (wchar_t)'U', (wchar_t)'L', (wchar_t)'L',
 110                 (wchar_t)')',
 111                 (wchar_t)0
 112               };
 113             ap->a.a_wide_string = wide_null_string;
 114           }
 115         break;
 116 #endif
 117       case TYPE_POINTER:
 118         ap->a.a_pointer = va_arg (args, void *);
 119         break;
 120       case TYPE_COUNT_SCHAR_POINTER:
 121         ap->a.a_count_schar_pointer = va_arg (args, signed char *);
 122         break;
 123       case TYPE_COUNT_SHORT_POINTER:
 124         ap->a.a_count_short_pointer = va_arg (args, short *);
 125         break;
 126       case TYPE_COUNT_INT_POINTER:
 127         ap->a.a_count_int_pointer = va_arg (args, int *);
 128         break;
 129       case TYPE_COUNT_LONGINT_POINTER:
 130         ap->a.a_count_longint_pointer = va_arg (args, long int *);
 131         break;
 132 #ifdef HAVE_LONG_LONG_INT
 133       case TYPE_COUNT_LONGLONGINT_POINTER:
 134         ap->a.a_count_longlongint_pointer = va_arg (args, long long int *);
 135         break;
 136 #endif
 137       default:
 138         /* Unknown type.  */
 139         return -1;
 140       }
 141   return 0;
 142 }