/* va_list error handler for noninteractive utilities Copyright (C) 2006-2007 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /* Written by Eric Blake. */ #include #include "verror.h" #include "xvasprintf.h" #include #include #include #if ENABLE_NLS # include "gettext.h" # define _(msgid) gettext (msgid) #endif #ifndef _ # define _(String) String #endif /* Print a message with `vfprintf (stderr, FORMAT, ARGS)'; if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM). If STATUS is nonzero, terminate the program with `exit (STATUS)'. Use the globals error_print_progname and error_message_count similarly to error(). */ void verror (int status, int errnum, const char *format, va_list args) { verror_at_line (status, errnum, NULL, 0, format, args); } /* Print a message with `vfprintf (stderr, FORMAT, ARGS)'; if ERRNUM is nonzero, follow it with ": " and strerror (ERRNUM). If STATUS is nonzero, terminate the program with `exit (STATUS)'. If FNAME is not NULL, prepend the message with `FNAME:LINENO:'. Use the globals error_print_progname, error_message_count, and error_one_per_line similarly to error_at_line(). */ void verror_at_line (int status, int errnum, const char *file, unsigned int line_number, const char *format, va_list args) { char *message = xvasprintf (format, args); if (message) { /* Until http://sourceware.org/bugzilla/show_bug.cgi?id=2997 is fixed, glibc violates GNU Coding Standards when the file argument to error_at_line is NULL. */ if (file) error_at_line (status, errnum, file, line_number, "%s", message); else error (status, errnum, "%s", message); } else { /* EOVERFLOW, EINVAL, and EILSEQ from xvasprintf are signs of serious programmer errors. */ error (0, errno, _("unable to display error message")); abort (); } free (message); }