183 lines
6.4 KiB
C
183 lines
6.4 KiB
C
/* Decomposed printf argument list.
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Copyright (C) 1999, 2002-2003, 2005-2007, 2009-2023 Free Software
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Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* This file can be parametrized with the following macros:
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ENABLE_UNISTDIO Set to 1 to enable the unistdio extensions.
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PRINTF_FETCHARGS Name of the function to be defined.
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STATIC Set to 'static' to declare the function static. */
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#ifndef PRINTF_FETCHARGS
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# include <config.h>
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#endif
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/* Specification. */
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#ifndef PRINTF_FETCHARGS
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# include "printf-args.h"
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#endif
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#ifdef STATIC
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STATIC
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#endif
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int
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PRINTF_FETCHARGS (va_list args, arguments *a)
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{
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size_t i;
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argument *ap;
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for (i = 0, ap = &a->arg[0]; i < a->count; i++, ap++)
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switch (ap->type)
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{
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case TYPE_SCHAR:
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ap->a.a_schar = va_arg (args, /*signed char*/ int);
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break;
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case TYPE_UCHAR:
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ap->a.a_uchar = va_arg (args, /*unsigned char*/ int);
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break;
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case TYPE_SHORT:
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ap->a.a_short = va_arg (args, /*short*/ int);
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break;
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case TYPE_USHORT:
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ap->a.a_ushort = va_arg (args, /*unsigned short*/ int);
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break;
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case TYPE_INT:
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ap->a.a_int = va_arg (args, int);
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break;
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case TYPE_UINT:
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ap->a.a_uint = va_arg (args, unsigned int);
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break;
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case TYPE_LONGINT:
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ap->a.a_longint = va_arg (args, long int);
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break;
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case TYPE_ULONGINT:
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ap->a.a_ulongint = va_arg (args, unsigned long int);
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break;
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case TYPE_LONGLONGINT:
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ap->a.a_longlongint = va_arg (args, long long int);
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break;
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case TYPE_ULONGLONGINT:
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ap->a.a_ulonglongint = va_arg (args, unsigned long long int);
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break;
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case TYPE_DOUBLE:
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ap->a.a_double = va_arg (args, double);
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break;
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case TYPE_LONGDOUBLE:
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ap->a.a_longdouble = va_arg (args, long double);
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break;
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case TYPE_CHAR:
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ap->a.a_char = va_arg (args, int);
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break;
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#if HAVE_WINT_T
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case TYPE_WIDE_CHAR:
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/* Although ISO C 99 7.24.1.(2) says that wint_t is "unchanged by
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default argument promotions", this is not the case in mingw32,
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where wint_t is 'unsigned short'. */
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ap->a.a_wide_char =
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(sizeof (wint_t) < sizeof (int)
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? (wint_t) va_arg (args, int)
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: va_arg (args, wint_t));
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break;
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#endif
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case TYPE_STRING:
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ap->a.a_string = va_arg (args, const char *);
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/* A null pointer is an invalid argument for "%s", but in practice
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it occurs quite frequently in printf statements that produce
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debug output. Use a fallback in this case. */
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if (ap->a.a_string == NULL)
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ap->a.a_string = "(NULL)";
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break;
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#if HAVE_WCHAR_T
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case TYPE_WIDE_STRING:
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ap->a.a_wide_string = va_arg (args, const wchar_t *);
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/* A null pointer is an invalid argument for "%ls", but in practice
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it occurs quite frequently in printf statements that produce
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debug output. Use a fallback in this case. */
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if (ap->a.a_wide_string == NULL)
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{
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static const wchar_t wide_null_string[] =
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{
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(wchar_t)'(',
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(wchar_t)'N', (wchar_t)'U', (wchar_t)'L', (wchar_t)'L',
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(wchar_t)')',
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(wchar_t)0
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};
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ap->a.a_wide_string = wide_null_string;
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}
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break;
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#endif
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case TYPE_POINTER:
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ap->a.a_pointer = va_arg (args, void *);
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break;
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case TYPE_COUNT_SCHAR_POINTER:
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ap->a.a_count_schar_pointer = va_arg (args, signed char *);
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break;
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case TYPE_COUNT_SHORT_POINTER:
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ap->a.a_count_short_pointer = va_arg (args, short *);
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break;
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case TYPE_COUNT_INT_POINTER:
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ap->a.a_count_int_pointer = va_arg (args, int *);
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break;
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case TYPE_COUNT_LONGINT_POINTER:
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ap->a.a_count_longint_pointer = va_arg (args, long int *);
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break;
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case TYPE_COUNT_LONGLONGINT_POINTER:
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ap->a.a_count_longlongint_pointer = va_arg (args, long long int *);
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break;
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#if ENABLE_UNISTDIO
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/* The unistdio extensions. */
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case TYPE_U8_STRING:
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ap->a.a_u8_string = va_arg (args, const uint8_t *);
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/* A null pointer is an invalid argument for "%U", but in practice
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it occurs quite frequently in printf statements that produce
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debug output. Use a fallback in this case. */
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if (ap->a.a_u8_string == NULL)
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{
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static const uint8_t u8_null_string[] =
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{ '(', 'N', 'U', 'L', 'L', ')', 0 };
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ap->a.a_u8_string = u8_null_string;
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}
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break;
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case TYPE_U16_STRING:
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ap->a.a_u16_string = va_arg (args, const uint16_t *);
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/* A null pointer is an invalid argument for "%lU", but in practice
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it occurs quite frequently in printf statements that produce
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debug output. Use a fallback in this case. */
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if (ap->a.a_u16_string == NULL)
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{
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static const uint16_t u16_null_string[] =
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{ '(', 'N', 'U', 'L', 'L', ')', 0 };
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ap->a.a_u16_string = u16_null_string;
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}
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break;
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case TYPE_U32_STRING:
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ap->a.a_u32_string = va_arg (args, const uint32_t *);
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/* A null pointer is an invalid argument for "%llU", but in practice
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it occurs quite frequently in printf statements that produce
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debug output. Use a fallback in this case. */
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if (ap->a.a_u32_string == NULL)
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{
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static const uint32_t u32_null_string[] =
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{ '(', 'N', 'U', 'L', 'L', ')', 0 };
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ap->a.a_u32_string = u32_null_string;
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}
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break;
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#endif
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default:
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/* Unknown type. */
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return -1;
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}
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return 0;
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}
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