1 /* Decomposed printf argument list.
2 Copyright (C) 1999, 2002-2003, 2006-2007, 2011-2021 Free Software
3 Foundation, Inc.
4
5 This file is free software: you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as
7 published by the Free Software Foundation; either version 2.1 of the
8 License, or (at your option) any later version.
9
10 This file 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 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public License
16 along 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 */