gl/printf-args.h

   1 /* Decomposed printf argument list.
   2    Copyright (C) 1999, 2002-2003, 2006-2007, 2011-2012 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, see <http://www.gnu.org/licenses/>.  */
  17
  18 #ifndef _PRINTF_ARGS_H
  19 #define _PRINTF_ARGS_H
  20
  21 /* This file can be parametrized with the following macros:
  22      ENABLE_UNISTDIO    Set to 1 to enable the unistdio extensions.
  23      PRINTF_FETCHARGS   Name of the function to be declared.
  24      STATIC             Set to 'static' to declare the function static.  */
  25
  26 /* Default parameters.  */
  27 #ifndef PRINTF_FETCHARGS
  28 # define PRINTF_FETCHARGS printf_fetchargs
  29 #endif
  30
  31 /* Get size_t.  */
  32 #include <stddef.h>
  33
  34 /* Get wchar_t.  */
  35 #if HAVE_WCHAR_T
  36 # include <stddef.h>
  37 #endif
  38
  39 /* Get wint_t.  */
  40 #if HAVE_WINT_T
  41 # include <wchar.h>
  42 #endif
  43
  44 /* Get va_list.  */
  45 #include <stdarg.h>
  46
  47
  48 /* Argument types */
  49 typedef enum
  50 {
  51   TYPE_NONE,
  52   TYPE_SCHAR,
  53   TYPE_UCHAR,
  54   TYPE_SHORT,
  55   TYPE_USHORT,
  56   TYPE_INT,
  57   TYPE_UINT,
  58   TYPE_LONGINT,
  59   TYPE_ULONGINT,
  60 #if HAVE_LONG_LONG_INT
  61   TYPE_LONGLONGINT,
  62   TYPE_ULONGLONGINT,
  63 #endif
  64   TYPE_DOUBLE,
  65   TYPE_LONGDOUBLE,
  66   TYPE_CHAR,
  67 #if HAVE_WINT_T
  68   TYPE_WIDE_CHAR,
  69 #endif
  70   TYPE_STRING,
  71 #if HAVE_WCHAR_T
  72   TYPE_WIDE_STRING,
  73 #endif
  74   TYPE_POINTER,
  75   TYPE_COUNT_SCHAR_POINTER,
  76   TYPE_COUNT_SHORT_POINTER,
  77   TYPE_COUNT_INT_POINTER,
  78   TYPE_COUNT_LONGINT_POINTER
  79 #if HAVE_LONG_LONG_INT
  80 , TYPE_COUNT_LONGLONGINT_POINTER
  81 #endif
  82 #if ENABLE_UNISTDIO
  83   /* The unistdio extensions.  */
  84 , TYPE_U8_STRING
  85 , TYPE_U16_STRING
  86 , TYPE_U32_STRING
  87 #endif
  88 } arg_type;
  89
  90 /* Polymorphic argument */
  91 typedef struct
  92 {
  93   arg_type type;
  94   union
  95   {
  96     signed char                 a_schar;
  97     unsigned char               a_uchar;
  98     short                       a_short;
  99     unsigned short              a_ushort;
 100     int                         a_int;
 101     unsigned int                a_uint;
 102     long int                    a_longint;
 103     unsigned long int           a_ulongint;
 104 #if HAVE_LONG_LONG_INT
 105     long long int               a_longlongint;
 106     unsigned long long int      a_ulonglongint;
 107 #endif
 108     float                       a_float;
 109     double                      a_double;
 110     long double                 a_longdouble;
 111     int                         a_char;
 112 #if HAVE_WINT_T
 113     wint_t                      a_wide_char;
 114 #endif
 115     const char*                 a_string;
 116 #if HAVE_WCHAR_T
 117     const wchar_t*              a_wide_string;
 118 #endif
 119     void*                       a_pointer;
 120     signed char *               a_count_schar_pointer;
 121     short *                     a_count_short_pointer;
 122     int *                       a_count_int_pointer;
 123     long int *                  a_count_longint_pointer;
 124 #if HAVE_LONG_LONG_INT
 125     long long int *             a_count_longlongint_pointer;
 126 #endif
 127 #if ENABLE_UNISTDIO
 128     /* The unistdio extensions.  */
 129     const uint8_t *             a_u8_string;
 130     const uint16_t *            a_u16_string;
 131     const uint32_t *            a_u32_string;
 132 #endif
 133   }
 134   a;
 135 }
 136 argument;
 137
 138 /* Number of directly allocated arguments (no malloc() needed).  */
 139 #define N_DIRECT_ALLOC_ARGUMENTS 7
 140
 141 typedef struct
 142 {
 143   size_t count;
 144   argument *arg;
 145   argument direct_alloc_arg[N_DIRECT_ALLOC_ARGUMENTS];
 146 }
 147 arguments;
 148
 149
 150 /* Fetch the arguments, putting them into a. */
 151 #ifdef STATIC
 152 STATIC
 153 #else
 154 extern
 155 #endif
 156 int PRINTF_FETCHARGS (va_list args, arguments *a);
 157
 158 #endif /* _PRINTF_ARGS_H */