Edit File: printf-args.c
/* Decomposed printf argument list. Copyright (C) 1999, 2002-2003, 2005-2007, 2015-2016 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ /* This file can be parametrized with the following macros: ENABLE_UNISTDIO Set to 1 to enable the unistdio extensions. PRINTF_FETCHARGS Name of the function to be defined. STATIC Set to 'static' to declare the function static. */ #ifndef PRINTF_FETCHARGS # include <config.h> #endif /* Specification. */ #ifndef PRINTF_FETCHARGS # include "printf-args.h" #endif #ifdef STATIC STATIC #endif int PRINTF_FETCHARGS (va_list args, arguments *a) { size_t i; argument *ap; for (i = 0, ap = &a->arg[0]; i < a->count; i++, ap++) switch (ap->type) { case TYPE_SCHAR: ap->a.a_schar = va_arg (args, /*signed char*/ int); break; case TYPE_UCHAR: ap->a.a_uchar = va_arg (args, /*unsigned char*/ int); break; case TYPE_SHORT: ap->a.a_short = va_arg (args, /*short*/ int); break; case TYPE_USHORT: ap->a.a_ushort = va_arg (args, /*unsigned short*/ int); break; case TYPE_INT: ap->a.a_int = va_arg (args, int); break; case TYPE_UINT: ap->a.a_uint = va_arg (args, unsigned int); break; case TYPE_LONGINT: ap->a.a_longint = va_arg (args, long int); break; case TYPE_ULONGINT: ap->a.a_ulongint = va_arg (args, unsigned long int); break; #if HAVE_LONG_LONG_INT case TYPE_LONGLONGINT: ap->a.a_longlongint = va_arg (args, long long int); break; case TYPE_ULONGLONGINT: ap->a.a_ulonglongint = va_arg (args, unsigned long long int); break; #endif case TYPE_DOUBLE: ap->a.a_double = va_arg (args, double); break; case TYPE_LONGDOUBLE: ap->a.a_longdouble = va_arg (args, long double); break; case TYPE_CHAR: ap->a.a_char = va_arg (args, int); break; #if HAVE_WINT_T case TYPE_WIDE_CHAR: /* Although ISO C 99 7.24.1.(2) says that wint_t is "unchanged by default argument promotions", this is not the case in mingw32, where wint_t is 'unsigned short'. */ ap->a.a_wide_char = (sizeof (wint_t) < sizeof (int) ? va_arg (args, int) : va_arg (args, wint_t)); break; #endif case TYPE_STRING: ap->a.a_string = va_arg (args, const char *); /* A null pointer is an invalid argument for "%s", but in practice it occurs quite frequently in printf statements that produce debug output. Use a fallback in this case. */ if (ap->a.a_string == NULL) ap->a.a_string = "(NULL)"; break; #if HAVE_WCHAR_T case TYPE_WIDE_STRING: ap->a.a_wide_string = va_arg (args, const wchar_t *); /* A null pointer is an invalid argument for "%ls", but in practice it occurs quite frequently in printf statements that produce debug output. Use a fallback in this case. */ if (ap->a.a_wide_string == NULL) { static const wchar_t wide_null_string[] = { (wchar_t)'(', (wchar_t)'N', (wchar_t)'U', (wchar_t)'L', (wchar_t)'L', (wchar_t)')', (wchar_t)0 }; ap->a.a_wide_string = wide_null_string; } break; #endif case TYPE_POINTER: ap->a.a_pointer = va_arg (args, void *); break; case TYPE_COUNT_SCHAR_POINTER: ap->a.a_count_schar_pointer = va_arg (args, signed char *); break; case TYPE_COUNT_SHORT_POINTER: ap->a.a_count_short_pointer = va_arg (args, short *); break; case TYPE_COUNT_INT_POINTER: ap->a.a_count_int_pointer = va_arg (args, int *); break; case TYPE_COUNT_LONGINT_POINTER: ap->a.a_count_longint_pointer = va_arg (args, long int *); break; #if HAVE_LONG_LONG_INT case TYPE_COUNT_LONGLONGINT_POINTER: ap->a.a_count_longlongint_pointer = va_arg (args, long long int *); break; #endif #if ENABLE_UNISTDIO /* The unistdio extensions. */ case TYPE_U8_STRING: ap->a.a_u8_string = va_arg (args, const uint8_t *); /* A null pointer is an invalid argument for "%U", but in practice it occurs quite frequently in printf statements that produce debug output. Use a fallback in this case. */ if (ap->a.a_u8_string == NULL) { static const uint8_t u8_null_string[] = { '(', 'N', 'U', 'L', 'L', ')', 0 }; ap->a.a_u8_string = u8_null_string; } break; case TYPE_U16_STRING: ap->a.a_u16_string = va_arg (args, const uint16_t *); /* A null pointer is an invalid argument for "%lU", but in practice it occurs quite frequently in printf statements that produce debug output. Use a fallback in this case. */ if (ap->a.a_u16_string == NULL) { static const uint16_t u16_null_string[] = { '(', 'N', 'U', 'L', 'L', ')', 0 }; ap->a.a_u16_string = u16_null_string; } break; case TYPE_U32_STRING: ap->a.a_u32_string = va_arg (args, const uint32_t *); /* A null pointer is an invalid argument for "%llU", but in practice it occurs quite frequently in printf statements that produce debug output. Use a fallback in this case. */ if (ap->a.a_u32_string == NULL) { static const uint32_t u32_null_string[] = { '(', 'N', 'U', 'L', 'L', ')', 0 }; ap->a.a_u32_string = u32_null_string; } break; #endif default: /* Unknown type. */ return -1; } return 0; }