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f43b8dd555
Since the introduction of explicit flags in the internal implementation of the printf family of functions, the 'mode' parameter can be used to select which format long double parameters have (with the mode flag: PRINTF_LDBL_IS_DBL). This patch uses this feature in the implementation of some functions in argp.h, err.h, and error.h (only those that take a format string and positional parameters). Future patches will add support for 'nldbl' and 'ieee128' versions of these functions. Tested for powerpc64le and x86_64.
106 lines
2.6 KiB
C
106 lines
2.6 KiB
C
/* Copyright (C) 2005-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@gnu.org>.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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#include <libioP.h>
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static int
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locked_vfxprintf (FILE *fp, const char *fmt, va_list ap,
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unsigned int mode_flags)
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{
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if (_IO_fwide (fp, 0) <= 0)
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return __vfprintf_internal (fp, fmt, ap, mode_flags);
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/* We must convert the narrow format string to a wide one.
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Each byte can produce at most one wide character. */
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wchar_t *wfmt;
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mbstate_t mbstate;
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int res;
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int used_malloc = 0;
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size_t len = strlen (fmt) + 1;
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if (__glibc_unlikely (len > SIZE_MAX / sizeof (wchar_t)))
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{
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__set_errno (EOVERFLOW);
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return -1;
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}
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if (__libc_use_alloca (len * sizeof (wchar_t)))
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wfmt = alloca (len * sizeof (wchar_t));
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else if ((wfmt = malloc (len * sizeof (wchar_t))) == NULL)
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return -1;
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else
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used_malloc = 1;
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memset (&mbstate, 0, sizeof mbstate);
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res = __mbsrtowcs (wfmt, &fmt, len, &mbstate);
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if (res != -1)
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res = __vfwprintf_internal (fp, wfmt, ap, mode_flags);
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if (used_malloc)
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free (wfmt);
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return res;
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}
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int
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__vfxprintf (FILE *fp, const char *fmt, va_list ap,
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unsigned int mode_flags)
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{
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if (fp == NULL)
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fp = stderr;
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_IO_flockfile (fp);
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int res = locked_vfxprintf (fp, fmt, ap, mode_flags);
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_IO_funlockfile (fp);
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return res;
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}
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int
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__fxprintf (FILE *fp, const char *fmt, ...)
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{
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va_list ap;
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va_start (ap, fmt);
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int res = __vfxprintf (fp, fmt, ap, 0);
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va_end (ap);
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return res;
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}
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int
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__fxprintf_nocancel (FILE *fp, const char *fmt, ...)
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{
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if (fp == NULL)
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fp = stderr;
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va_list ap;
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va_start (ap, fmt);
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_IO_flockfile (fp);
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int save_flags2 = fp->_flags2;
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fp->_flags2 |= _IO_FLAGS2_NOTCANCEL;
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int res = locked_vfxprintf (fp, fmt, ap, 0);
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fp->_flags2 = save_flags2;
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_IO_funlockfile (fp);
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va_end (ap);
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return res;
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}
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