stdio-common/psignal.c

   1 /* Copyright (C) 1991,1992,1995-1997,2001,2002 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <stdio.h>
  20 #include <signal.h>
  21 #include <stdlib.h>
  22 #include <libintl.h>
  23 #ifdef USE_IN_LIBIO
  24 # include <wchar.h>
  25 #endif
  26
  27
  28 #ifndef HAVE_GNU_LD
  29 #define _sys_siglist    sys_siglist
  30 #endif
  31
  32 /* Defined in sys_siglist.c.  */
  33 extern const char *const _sys_siglist[];
  34 extern const char *const _sys_siglist_internal[] attribute_hidden;
  35
  36
  37 /* Print out on stderr a line consisting of the test in S, a colon, a space,
  38    a message describing the meaning of the signal number SIG and a newline.
  39    If S is NULL or "", the colon and space are omitted.  */
  40 void
  41 psignal (int sig, const char *s)
  42 {
  43   const char *colon, *desc;
  44
  45   if (s == NULL || s == '\0')
  46     s = colon = "";
  47   else
  48     colon = ": ";
  49
  50   if (sig >= 0 && sig < NSIG && (desc = INTUSE(_sys_siglist)[sig]) != NULL)
  51     {
  52 #ifdef USE_IN_LIBIO
  53       if (_IO_fwide (stderr, 0) > 0)
  54         (void) __fwprintf (stderr, L"%s%s%s\n", s, colon, _(desc));
  55       else
  56 #endif
  57         (void) fprintf (stderr, "%s%s%s\n", s, colon, _(desc));
  58     }
  59   else
  60     {
  61       char *buf;
  62
  63       (void) __asprintf (&buf, _("%s%sUnknown signal %d\n"), s, colon, sig);
  64
  65 #ifdef USE_IN_LIBIO
  66       if (_IO_fwide (stderr, 0) > 0)
  67         (void) __fwprintf (stderr, L"%s",  buf);
  68       else
  69 #endif
  70         (void) fputs (buf, stderr);
  71
  72       free (buf);
  73     }
  74 }