| 0,0 → 1,117 |
|---|
| /* Error handler for noninteractive utilities |
| Copyright (C) 1990-1998, 2000-2005, 2006 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, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| /* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */ |
| |
| #include <stdarg.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <errno.h> |
| |
| #include "error.h" |
| |
| /* This variable is incremented each time `error' is called. */ |
| unsigned int error_message_count; |
| |
| char *strerror_r (); |
| |
| /* The calling program should define program_name and set it to the |
| name of the executing program. */ |
| //extern char *program_name; |
| |
| static void |
| print_errno_message (int errnum) |
| { |
| char const *s; |
| |
| s = strerror (errnum); |
| fprintf (stderr, ": %s", s); |
| } |
| |
| static void |
| error_tail (int status, int errnum, const char *message, va_list args) |
| { |
| vfprintf (stderr, message, args); |
| va_end (args); |
| |
| ++error_message_count; |
| if (errnum) |
| print_errno_message (errnum); |
| putc ('\n', stderr); |
| fflush (stderr); |
| if (status) |
| exit (status); |
| } |
| |
| |
| /* Print the program name and error message MESSAGE, which is a printf-style |
| format string with optional args. |
| If ERRNUM is nonzero, print its corresponding system error message. |
| Exit with status STATUS if it is nonzero. */ |
| void |
| error (int status, int errnum, const char *message, ...) |
| { |
| va_list args; |
| |
| // fflush (stdout); |
| |
| // fprintf (stderr, "%s: ", program_name); |
| |
| va_start (args, message); |
| error_tail (status, errnum, message, args); |
| |
| }; |
| |
| /* Sometimes we want to have at most one error per line. This |
| variable controls whether this mode is selected or not. */ |
| |
| int error_one_per_line; |
| |
| void |
| error_at_line (int status, int errnum, const char *file_name, |
| unsigned int line_number, const char *message, ...) |
| { |
| va_list args; |
| |
| if (error_one_per_line) |
| { |
| static const char *old_file_name; |
| static unsigned int old_line_number; |
| |
| if (old_line_number == line_number |
| && (file_name == old_file_name |
| || strcmp (old_file_name, file_name) == 0)) |
| /* Simply return and print nothing. */ |
| return; |
| |
| old_file_name = file_name; |
| old_line_number = line_number; |
| } |
| |
| // fflush (stdout); |
| |
| fprintf (stderr, file_name != NULL ? "%s:%d: " : " ", |
| file_name, line_number); |
| |
| va_start (args, message); |
| error_tail (status, errnum, message, args); |
| |
| } |
| |