| 1 | /* Decomposed printf argument list. |
| 2 | Copyright (C) 1999, 2002-2003, 2005-2007, 2009-2012 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 Lesser General Public License as published by |
| 7 | the Free Software Foundation; either version 2, 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 Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public License along |
| 16 | with this program; if not, see <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | /* This file can be parametrized with the following macros: |
| 19 | ENABLE_UNISTDIO Set to 1 to enable the unistdio extensions. |
| 20 | PRINTF_FETCHARGS Name of the function to be defined. |
| 21 | STATIC Set to 'static' to declare the function static. */ |
| 22 | |
| 23 | #ifndef PRINTF_FETCHARGS |
| 24 | # include <config.h> |
| 25 | #endif |
| 26 | |
| 27 | /* Specification. */ |
| 28 | #ifndef PRINTF_FETCHARGS |
| 29 | # include "printf-args.h" |
| 30 | #endif |
| 31 | |
| 32 | #ifdef STATIC |
| 33 | STATIC |
| 34 | #endif |
| 35 | int |
| 36 | PRINTF_FETCHARGS (va_list args, arguments *a) |
| 37 | { |
| 38 | size_t i; |
| 39 | argument *ap; |
| 40 | |
| 41 | for (i = 0, ap = &a->arg[0]; i < a->count; i++, ap++) |
| 42 | switch (ap->type) |
| 43 | { |
| 44 | case TYPE_SCHAR: |
| 45 | ap->a.a_schar = va_arg (args, /*signed char*/ int); |
| 46 | break; |
| 47 | case TYPE_UCHAR: |
| 48 | ap->a.a_uchar = va_arg (args, /*unsigned char*/ int); |
| 49 | break; |
| 50 | case TYPE_SHORT: |
| 51 | ap->a.a_short = va_arg (args, /*short*/ int); |
| 52 | break; |
| 53 | case TYPE_USHORT: |
| 54 | ap->a.a_ushort = va_arg (args, /*unsigned short*/ int); |
| 55 | break; |
| 56 | case TYPE_INT: |
| 57 | ap->a.a_int = va_arg (args, int); |
| 58 | break; |
| 59 | case TYPE_UINT: |
| 60 | ap->a.a_uint = va_arg (args, unsigned int); |
| 61 | break; |
| 62 | case TYPE_LONGINT: |
| 63 | ap->a.a_longint = va_arg (args, long int); |
| 64 | break; |
| 65 | case TYPE_ULONGINT: |
| 66 | ap->a.a_ulongint = va_arg (args, unsigned long int); |
| 67 | break; |
| 68 | #if HAVE_LONG_LONG_INT |
| 69 | case TYPE_LONGLONGINT: |
| 70 | ap->a.a_longlongint = va_arg (args, long long int); |
| 71 | break; |
| 72 | case TYPE_ULONGLONGINT: |
| 73 | ap->a.a_ulonglongint = va_arg (args, unsigned long long int); |
| 74 | break; |
| 75 | #endif |
| 76 | case TYPE_DOUBLE: |
| 77 | ap->a.a_double = va_arg (args, double); |
| 78 | break; |
| 79 | case TYPE_LONGDOUBLE: |
| 80 | ap->a.a_longdouble = va_arg (args, long double); |
| 81 | break; |
| 82 | case TYPE_CHAR: |
| 83 | ap->a.a_char = va_arg (args, int); |
| 84 | break; |
| 85 | #if HAVE_WINT_T |
| 86 | case TYPE_WIDE_CHAR: |
| 87 | /* Although ISO C 99 7.24.1.(2) says that wint_t is "unchanged by |
| 88 | default argument promotions", this is not the case in mingw32, |
| 89 | where wint_t is 'unsigned short'. */ |
| 90 | ap->a.a_wide_char = |
| 91 | (sizeof (wint_t) < sizeof (int) |
| 92 | ? (wint_t) va_arg (args, int) |
| 93 | : va_arg (args, wint_t)); |
| 94 | break; |
| 95 | #endif |
| 96 | case TYPE_STRING: |
| 97 | ap->a.a_string = va_arg (args, const char *); |
| 98 | /* A null pointer is an invalid argument for "%s", but in practice |
| 99 | it occurs quite frequently in printf statements that produce |
| 100 | debug output. Use a fallback in this case. */ |
| 101 | if (ap->a.a_string == NULL) |
| 102 | ap->a.a_string = "(NULL)"; |
| 103 | break; |
| 104 | #if HAVE_WCHAR_T |
| 105 | case TYPE_WIDE_STRING: |
| 106 | ap->a.a_wide_string = va_arg (args, const wchar_t *); |
| 107 | /* A null pointer is an invalid argument for "%ls", but in practice |
| 108 | it occurs quite frequently in printf statements that produce |
| 109 | debug output. Use a fallback in this case. */ |
| 110 | if (ap->a.a_wide_string == NULL) |
| 111 | { |
| 112 | static const wchar_t wide_null_string[] = |
| 113 | { |
| 114 | (wchar_t)'(', |
| 115 | (wchar_t)'N', (wchar_t)'U', (wchar_t)'L', (wchar_t)'L', |
| 116 | (wchar_t)')', |
| 117 | (wchar_t)0 |
| 118 | }; |
| 119 | ap->a.a_wide_string = wide_null_string; |
| 120 | } |
| 121 | break; |
| 122 | #endif |
| 123 | case TYPE_POINTER: |
| 124 | ap->a.a_pointer = va_arg (args, void *); |
| 125 | break; |
| 126 | case TYPE_COUNT_SCHAR_POINTER: |
| 127 | ap->a.a_count_schar_pointer = va_arg (args, signed char *); |
| 128 | break; |
| 129 | case TYPE_COUNT_SHORT_POINTER: |
| 130 | ap->a.a_count_short_pointer = va_arg (args, short *); |
| 131 | break; |
| 132 | case TYPE_COUNT_INT_POINTER: |
| 133 | ap->a.a_count_int_pointer = va_arg (args, int *); |
| 134 | break; |
| 135 | case TYPE_COUNT_LONGINT_POINTER: |
| 136 | ap->a.a_count_longint_pointer = va_arg (args, long int *); |
| 137 | break; |
| 138 | #if HAVE_LONG_LONG_INT |
| 139 | case TYPE_COUNT_LONGLONGINT_POINTER: |
| 140 | ap->a.a_count_longlongint_pointer = va_arg (args, long long int *); |
| 141 | break; |
| 142 | #endif |
| 143 | #if ENABLE_UNISTDIO |
| 144 | /* The unistdio extensions. */ |
| 145 | case TYPE_U8_STRING: |
| 146 | ap->a.a_u8_string = va_arg (args, const uint8_t *); |
| 147 | /* A null pointer is an invalid argument for "%U", but in practice |
| 148 | it occurs quite frequently in printf statements that produce |
| 149 | debug output. Use a fallback in this case. */ |
| 150 | if (ap->a.a_u8_string == NULL) |
| 151 | { |
| 152 | static const uint8_t u8_null_string[] = |
| 153 | { '(', 'N', 'U', 'L', 'L', ')', 0 }; |
| 154 | ap->a.a_u8_string = u8_null_string; |
| 155 | } |
| 156 | break; |
| 157 | case TYPE_U16_STRING: |
| 158 | ap->a.a_u16_string = va_arg (args, const uint16_t *); |
| 159 | /* A null pointer is an invalid argument for "%lU", but in practice |
| 160 | it occurs quite frequently in printf statements that produce |
| 161 | debug output. Use a fallback in this case. */ |
| 162 | if (ap->a.a_u16_string == NULL) |
| 163 | { |
| 164 | static const uint16_t u16_null_string[] = |
| 165 | { '(', 'N', 'U', 'L', 'L', ')', 0 }; |
| 166 | ap->a.a_u16_string = u16_null_string; |
| 167 | } |
| 168 | break; |
| 169 | case TYPE_U32_STRING: |
| 170 | ap->a.a_u32_string = va_arg (args, const uint32_t *); |
| 171 | /* A null pointer is an invalid argument for "%llU", but in practice |
| 172 | it occurs quite frequently in printf statements that produce |
| 173 | debug output. Use a fallback in this case. */ |
| 174 | if (ap->a.a_u32_string == NULL) |
| 175 | { |
| 176 | static const uint32_t u32_null_string[] = |
| 177 | { '(', 'N', 'U', 'L', 'L', ')', 0 }; |
| 178 | ap->a.a_u32_string = u32_null_string; |
| 179 | } |
| 180 | break; |
| 181 | #endif |
| 182 | default: |
| 183 | /* Unknown type. */ |
| 184 | return -1; |
| 185 | } |
| 186 | return 0; |
| 187 | } |