1 /* Decomposed printf argument list.
2    Copyright (C) 1999, 2002-2003, 2006-2007, 2011-2021 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   TYPE_LONGLONGINT,
61   TYPE_ULONGLONGINT,
62   TYPE_DOUBLE,
63   TYPE_LONGDOUBLE,
64   TYPE_CHAR,
65 #if HAVE_WINT_T
66   TYPE_WIDE_CHAR,
67 #endif
68   TYPE_STRING,
69 #if HAVE_WCHAR_T
70   TYPE_WIDE_STRING,
71 #endif
72   TYPE_POINTER,
73   TYPE_COUNT_SCHAR_POINTER,
74   TYPE_COUNT_SHORT_POINTER,
75   TYPE_COUNT_INT_POINTER,
76   TYPE_COUNT_LONGINT_POINTER,
77   TYPE_COUNT_LONGLONGINT_POINTER
78 #if ENABLE_UNISTDIO
79   /* The unistdio extensions.  */
80 , TYPE_U8_STRING
81 , TYPE_U16_STRING
82 , TYPE_U32_STRING
83 #endif
84 } arg_type;
85 
86 /* Polymorphic argument */
87 typedef struct
88 {
89   arg_type type;
90   union
91   {
92     signed char                 a_schar;
93     unsigned char               a_uchar;
94     short                       a_short;
95     unsigned short              a_ushort;
96     int                         a_int;
97     unsigned int                a_uint;
98     long int                    a_longint;
99     unsigned long int           a_ulongint;
100     long long int               a_longlongint;
101     unsigned long long int      a_ulonglongint;
102     float                       a_float;
103     double                      a_double;
104     long double                 a_longdouble;
105     int                         a_char;
106 #if HAVE_WINT_T
107     wint_t                      a_wide_char;
108 #endif
109     const char*                 a_string;
110 #if HAVE_WCHAR_T
111     const wchar_t*              a_wide_string;
112 #endif
113     void*                       a_pointer;
114     signed char *               a_count_schar_pointer;
115     short *                     a_count_short_pointer;
116     int *                       a_count_int_pointer;
117     long int *                  a_count_longint_pointer;
118     long long int *             a_count_longlongint_pointer;
119 #if ENABLE_UNISTDIO
120     /* The unistdio extensions.  */
121     const uint8_t *             a_u8_string;
122     const uint16_t *            a_u16_string;
123     const uint32_t *            a_u32_string;
124 #endif
125   }
126   a;
127 }
128 argument;
129 
130 /* Number of directly allocated arguments (no malloc() needed).  */
131 #define N_DIRECT_ALLOC_ARGUMENTS 7
132 
133 typedef struct
134 {
135   size_t count;
136   argument *arg;
137   argument direct_alloc_arg[N_DIRECT_ALLOC_ARGUMENTS];
138 }
139 arguments;
140 
141 
142 /* Fetch the arguments, putting them into a. */
143 #ifdef STATIC
144 STATIC
145 #else
146 extern
147 #endif
148 int PRINTF_FETCHARGS (va_list args, arguments *a);
149 
150 #endif /* _PRINTF_ARGS_H */
151