gl/printf-args.h

   1 /* Decomposed printf argument list.
   2    Copyright (C) 1999, 2002-2003, 2006-2007, 2009-2010 Free Software
   3    Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3, or (at your option)
   8    any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License along
  16    with this program; if not, write to the Free Software Foundation,
  17    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  18
  19 #ifndef _PRINTF_ARGS_H
  20 #define _PRINTF_ARGS_H
  21
  22 /* This file can be parametrized with the following macros:
  23      ENABLE_UNISTDIO    Set to 1 to enable the unistdio extensions.
  24      PRINTF_FETCHARGS   Name of the function to be declared.
  25      STATIC             Set to 'static' to declare the function static.  */
  26
  27 /* Default parameters.  */
  28 #ifndef PRINTF_FETCHARGS
  29 # define PRINTF_FETCHARGS printf_fetchargs
  30 #endif
  31
  32 /* Get size_t.  */
  33 #include <stddef.h>
  34
  35 /* Get wchar_t.  */
  36 #if HAVE_WCHAR_T
  37 # include <stddef.h>
  38 #endif
  39
  40 /* Get wint_t.  */
  41 #if HAVE_WINT_T
  42 # include <wchar.h>
  43 #endif
  44
  45 /* Get va_list.  */
  46 #include <stdarg.h>
  47
  48
  49 /* Argument types */
  50 typedef enum
  51 {
  52   TYPE_NONE,
  53   TYPE_SCHAR,
  54   TYPE_UCHAR,
  55   TYPE_SHORT,
  56   TYPE_USHORT,
  57   TYPE_INT,
  58   TYPE_UINT,
  59   TYPE_LONGINT,
  60   TYPE_ULONGINT,
  61 #if HAVE_LONG_LONG_INT
  62   TYPE_LONGLONGINT,
  63   TYPE_ULONGLONGINT,
  64 #endif
  65   TYPE_DOUBLE,
  66   TYPE_LONGDOUBLE,
  67   TYPE_CHAR,
  68 #if HAVE_WINT_T
  69   TYPE_WIDE_CHAR,
  70 #endif
  71   TYPE_STRING,
  72 #if HAVE_WCHAR_T
  73   TYPE_WIDE_STRING,
  74 #endif
  75   TYPE_POINTER,
  76   TYPE_COUNT_SCHAR_POINTER,
  77   TYPE_COUNT_SHORT_POINTER,
  78   TYPE_COUNT_INT_POINTER,
  79   TYPE_COUNT_LONGINT_POINTER
  80 #if HAVE_LONG_LONG_INT
  81 , TYPE_COUNT_LONGLONGINT_POINTER
  82 #endif
  83 #if ENABLE_UNISTDIO
  84   /* The unistdio extensions.  */
  85 , TYPE_U8_STRING
  86 , TYPE_U16_STRING
  87 , TYPE_U32_STRING
  88 #endif
  89 } arg_type;
  90
  91 /* Polymorphic argument */
  92 typedef struct
  93 {
  94   arg_type type;
  95   union
  96   {
  97     signed char                 a_schar;
  98     unsigned char               a_uchar;
  99     short                       a_short;
 100     unsigned short              a_ushort;
 101     int                         a_int;
 102     unsigned int                a_uint;
 103     long int                    a_longint;
 104     unsigned long int           a_ulongint;
 105 #if HAVE_LONG_LONG_INT
 106     long long int               a_longlongint;
 107     unsigned long long int      a_ulonglongint;
 108 #endif
 109     float                       a_float;
 110     double                      a_double;
 111     long double                 a_longdouble;
 112     int                         a_char;
 113 #if HAVE_WINT_T
 114     wint_t                      a_wide_char;
 115 #endif
 116     const char*                 a_string;
 117 #if HAVE_WCHAR_T
 118     const wchar_t*              a_wide_string;
 119 #endif
 120     void*                       a_pointer;
 121     signed char *               a_count_schar_pointer;
 122     short *                     a_count_short_pointer;
 123     int *                       a_count_int_pointer;
 124     long int *                  a_count_longint_pointer;
 125 #if HAVE_LONG_LONG_INT
 126     long long int *             a_count_longlongint_pointer;
 127 #endif
 128 #if ENABLE_UNISTDIO
 129     /* The unistdio extensions.  */
 130     const uint8_t *             a_u8_string;
 131     const uint16_t *            a_u16_string;
 132     const uint32_t *            a_u32_string;
 133 #endif
 134   }
 135   a;
 136 }
 137 argument;
 138
 139 typedef struct
 140 {
 141   size_t count;
 142   argument *arg;
 143 }
 144 arguments;
 145
 146
 147 /* Fetch the arguments, putting them into a. */
 148 #ifdef STATIC
 149 STATIC
 150 #else
 151 extern
 152 #endif
 153 int PRINTF_FETCHARGS (va_list args, arguments *a);
 154
 155 #endif /* _PRINTF_ARGS_H */