| /* Copyright (C) 2005-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@gnu.org>. |
| |
| The GNU C Library 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. |
| |
| The GNU C Library 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 the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <wchar.h> |
| #include <libioP.h> |
| |
| static int |
| locked_vfxprintf (FILE *fp, const char *fmt, va_list ap) |
| { |
| if (_IO_fwide (fp, 0) <= 0) |
| return _IO_vfprintf (fp, fmt, ap); |
| |
| /* We must convert the narrow format string to a wide one. |
| Each byte can produce at most one wide character. */ |
| wchar_t *wfmt; |
| mbstate_t mbstate; |
| int res; |
| int used_malloc = 0; |
| size_t len = strlen (fmt) + 1; |
| |
| if (__glibc_unlikely (len > SIZE_MAX / sizeof (wchar_t))) |
| { |
| __set_errno (EOVERFLOW); |
| return -1; |
| } |
| if (__libc_use_alloca (len * sizeof (wchar_t))) |
| wfmt = alloca (len * sizeof (wchar_t)); |
| else if ((wfmt = malloc (len * sizeof (wchar_t))) == NULL) |
| return -1; |
| else |
| used_malloc = 1; |
| |
| memset (&mbstate, 0, sizeof mbstate); |
| res = __mbsrtowcs (wfmt, &fmt, len, &mbstate); |
| |
| if (res != -1) |
| res = _IO_vfwprintf (fp, wfmt, ap); |
| |
| if (used_malloc) |
| free (wfmt); |
| |
| return res; |
| } |
| |
| int |
| __fxprintf (FILE *fp, const char *fmt, ...) |
| { |
| if (fp == NULL) |
| fp = stderr; |
| |
| va_list ap; |
| va_start (ap, fmt); |
| _IO_flockfile (fp); |
| |
| int res = locked_vfxprintf (fp, fmt, ap); |
| |
| _IO_funlockfile (fp); |
| va_end (ap); |
| return res; |
| } |
| |
| int |
| __fxprintf_nocancel (FILE *fp, const char *fmt, ...) |
| { |
| if (fp == NULL) |
| fp = stderr; |
| |
| va_list ap; |
| va_start (ap, fmt); |
| _IO_flockfile (fp); |
| int save_flags2 = ((_IO_FILE *)fp)->_flags2; |
| ((_IO_FILE *)fp)->_flags2 |= _IO_FLAGS2_NOTCANCEL; |
| |
| int res = locked_vfxprintf (fp, fmt, ap); |
| |
| ((_IO_FILE *)fp)->_flags2 = save_flags2; |
| _IO_funlockfile (fp); |
| va_end (ap); |
| return res; |
| } |