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 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 <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 } 188
