1 /* Decomposed printf argument list.
2    Copyright (C) 1999, 2002-2003, 2006-2007, 2011-2018 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 <https://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 */
159