| 1 | /* Decomposed printf argument list.
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| 2 | Copyright (C) 1999, 2002-2003, 2006-2007, 2011-2021 Free Software
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| 3 | Foundation, Inc.
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| 4 |
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| 5 | This file is free software: you can redistribute it and/or modify
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| 6 | it under the terms of the GNU Lesser General Public License as
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| 7 | published by the Free Software Foundation; either version 2.1 of the
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| 8 | License, or (at your option) any later version.
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| 9 |
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| 10 | This file is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU Lesser General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU Lesser General Public License
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| 16 | along with this program. If not, see <https://www.gnu.org/licenses/>. */
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| 17 |
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| 18 | #ifndef _PRINTF_ARGS_H
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| 19 | #define _PRINTF_ARGS_H
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| 20 |
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| 21 | /* This file can be parametrized with the following macros:
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| 22 | ENABLE_UNISTDIO Set to 1 to enable the unistdio extensions.
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| 23 | PRINTF_FETCHARGS Name of the function to be declared.
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| 24 | STATIC Set to 'static' to declare the function static. */
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| 25 |
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| 26 | /* Default parameters. */
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| 27 | #ifndef PRINTF_FETCHARGS
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| 28 | # define PRINTF_FETCHARGS printf_fetchargs
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| 29 | #endif
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| 30 |
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| 31 | /* Get size_t. */
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| 32 | #include <stddef.h>
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| 33 |
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| 34 | /* Get wchar_t. */
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| 35 | #if HAVE_WCHAR_T
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| 36 | # include <stddef.h>
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| 37 | #endif
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| 38 |
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| 39 | /* Get wint_t. */
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| 40 | #if HAVE_WINT_T
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| 41 | # include <wchar.h>
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| 42 | #endif
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| 43 |
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| 44 | /* Get va_list. */
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| 45 | #include <stdarg.h>
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| 46 |
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| 47 |
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| 48 | /* Argument types */
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| 49 | typedef enum
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| 50 | {
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| 51 | TYPE_NONE,
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| 52 | TYPE_SCHAR,
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| 53 | TYPE_UCHAR,
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| 54 | TYPE_SHORT,
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| 55 | TYPE_USHORT,
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| 56 | TYPE_INT,
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| 57 | TYPE_UINT,
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| 58 | TYPE_LONGINT,
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| 59 | TYPE_ULONGINT,
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| 60 | TYPE_LONGLONGINT,
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| 61 | TYPE_ULONGLONGINT,
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| 62 | TYPE_DOUBLE,
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| 63 | TYPE_LONGDOUBLE,
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| 64 | TYPE_CHAR,
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| 65 | #if HAVE_WINT_T
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| 66 | TYPE_WIDE_CHAR,
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| 67 | #endif
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| 68 | TYPE_STRING,
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| 69 | #if HAVE_WCHAR_T
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| 70 | TYPE_WIDE_STRING,
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| 71 | #endif
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| 72 | TYPE_POINTER,
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| 73 | TYPE_COUNT_SCHAR_POINTER,
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| 74 | TYPE_COUNT_SHORT_POINTER,
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| 75 | TYPE_COUNT_INT_POINTER,
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| 76 | TYPE_COUNT_LONGINT_POINTER,
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| 77 | TYPE_COUNT_LONGLONGINT_POINTER
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| 78 | #if ENABLE_UNISTDIO
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| 79 | /* The unistdio extensions. */
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| 80 | , TYPE_U8_STRING
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| 81 | , TYPE_U16_STRING
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| 82 | , TYPE_U32_STRING
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| 83 | #endif
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| 84 | } arg_type;
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| 85 |
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| 86 | /* Polymorphic argument */
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| 87 | typedef struct
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| 88 | {
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| 89 | arg_type type;
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| 90 | union
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| 91 | {
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| 92 | signed char a_schar;
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| 93 | unsigned char a_uchar;
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| 94 | short a_short;
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| 95 | unsigned short a_ushort;
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| 96 | int a_int;
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| 97 | unsigned int a_uint;
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| 98 | long int a_longint;
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| 99 | unsigned long int a_ulongint;
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| 100 | long long int a_longlongint;
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| 101 | unsigned long long int a_ulonglongint;
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| 102 | float a_float;
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| 103 | double a_double;
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| 104 | long double a_longdouble;
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| 105 | int a_char;
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| 106 | #if HAVE_WINT_T
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| 107 | wint_t a_wide_char;
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| 108 | #endif
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| 109 | const char* a_string;
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| 110 | #if HAVE_WCHAR_T
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| 111 | const wchar_t* a_wide_string;
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| 112 | #endif
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| 113 | void* a_pointer;
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| 114 | signed char * a_count_schar_pointer;
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| 115 | short * a_count_short_pointer;
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| 116 | int * a_count_int_pointer;
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| 117 | long int * a_count_longint_pointer;
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| 118 | long long int * a_count_longlongint_pointer;
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| 119 | #if ENABLE_UNISTDIO
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| 120 | /* The unistdio extensions. */
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| 121 | const uint8_t * a_u8_string;
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| 122 | const uint16_t * a_u16_string;
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| 123 | const uint32_t * a_u32_string;
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| 124 | #endif
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| 125 | }
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| 126 | a;
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| 127 | }
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| 128 | argument;
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| 129 |
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| 130 | /* Number of directly allocated arguments (no malloc() needed). */
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| 131 | #define N_DIRECT_ALLOC_ARGUMENTS 7
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| 132 |
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| 133 | typedef struct
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| 134 | {
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| 135 | size_t count;
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| 136 | argument *arg;
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| 137 | argument direct_alloc_arg[N_DIRECT_ALLOC_ARGUMENTS];
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| 138 | }
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| 139 | arguments;
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| 140 |
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| 141 |
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| 142 | /* Fetch the arguments, putting them into a. */
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| 143 | #ifdef STATIC
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| 144 | STATIC
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| 145 | #else
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| 146 | extern
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| 147 | #endif
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| 148 | int PRINTF_FETCHARGS (va_list args, arguments *a);
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| 149 |
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| 150 | #endif /* _PRINTF_ARGS_H */
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