diff options
Diffstat (limited to 'REORG.TODO/misc/err.c')
| -rw-r--r-- | REORG.TODO/misc/err.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/REORG.TODO/misc/err.c b/REORG.TODO/misc/err.c new file mode 100644 index 0000000000..3da4e9d6b0 --- /dev/null +++ b/REORG.TODO/misc/err.c @@ -0,0 +1,179 @@ +/* 4.4BSD utility functions for error messages. + Copyright (C) 1995-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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 <err.h> +#include <stdlib.h> +#include <errno.h> +#include <string.h> +#include <stdio.h> + +#include <wchar.h> +#define flockfile(s) _IO_flockfile (s) +#define funlockfile(s) _IO_funlockfile (s) + +extern char *__progname; + +#define VA(call) \ +{ \ + va_list ap; \ + va_start (ap, format); \ + call; \ + va_end (ap); \ +} + +static void +convert_and_print (const char *format, __gnuc_va_list ap) +{ +#define ALLOCA_LIMIT 2000 + size_t len; + wchar_t *wformat = NULL; + mbstate_t st; + size_t res; + const char *tmp; + + if (format == NULL) + return; + + len = strlen (format) + 1; + + do + { + if (len < ALLOCA_LIMIT) + wformat = (wchar_t *) alloca (len * sizeof (wchar_t)); + else + { + if (wformat != NULL && len / 2 < ALLOCA_LIMIT) + wformat = NULL; + + wformat = (wchar_t *) realloc (wformat, len * sizeof (wchar_t)); + + if (wformat == NULL) + { + fputws_unlocked (L"out of memory\n", stderr); + return; + } + } + + memset (&st, '\0', sizeof (st)); + tmp =format; + } + while ((res = __mbsrtowcs (wformat, &tmp, len, &st)) == len); + + if (res == (size_t) -1) + /* The string cannot be converted. */ + wformat = (wchar_t *) L"???"; + + __vfwprintf (stderr, wformat, ap); +} + +void +vwarnx (const char *format, __gnuc_va_list ap) +{ + flockfile (stderr); + if (_IO_fwide (stderr, 0) > 0) + { + __fwprintf (stderr, L"%s: ", __progname); + convert_and_print (format, ap); + putwc_unlocked (L'\n', stderr); + } + else + { + fprintf (stderr, "%s: ", __progname); + if (format) + vfprintf (stderr, format, ap); + putc_unlocked ('\n', stderr); + } + funlockfile (stderr); +} +libc_hidden_def (vwarnx) + +void +vwarn (const char *format, __gnuc_va_list ap) +{ + int error = errno; + + flockfile (stderr); + if (_IO_fwide (stderr, 0) > 0) + { + __fwprintf (stderr, L"%s: ", __progname); + if (format) + { + convert_and_print (format, ap); + fputws_unlocked (L": ", stderr); + } + __set_errno (error); + __fwprintf (stderr, L"%m\n"); + } + else + { + fprintf (stderr, "%s: ", __progname); + if (format) + { + vfprintf (stderr, format, ap); + fputs_unlocked (": ", stderr); + } + __set_errno (error); + fprintf (stderr, "%m\n"); + } + funlockfile (stderr); +} +libc_hidden_def (vwarn) + + +void +warn (const char *format, ...) +{ + VA (vwarn (format, ap)) +} +libc_hidden_def (warn) + +void +warnx (const char *format, ...) +{ + VA (vwarnx (format, ap)) +} +libc_hidden_def (warnx) + +void +verr (int status, const char *format, __gnuc_va_list ap) +{ + vwarn (format, ap); + exit (status); +} +libc_hidden_def (verr) + +void +verrx (int status, const char *format, __gnuc_va_list ap) +{ + vwarnx (format, ap); + exit (status); +} +libc_hidden_def (verrx) + +void +err (int status, const char *format, ...) +{ + VA (verr (status, format, ap)) +} + +void +errx (int status, const char *format, ...) +{ + VA (verrx (status, format, ap)) +} |