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/* Error handler for noninteractive utilities |
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Copyright (C) 1990-1998, 2000-2005, 2006 Free Software Foundation, Inc. |
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This file is part of the GNU C Library. |
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The GNU C Library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) any later version. |
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The GNU C Library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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You should have received a copy of the GNU Lesser General Public |
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License along with the GNU C Library; if not, write to the Free |
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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02111-1307 USA. */ |
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/* Written by David MacKenzie . */ |
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#include |
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#include |
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#include |
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#include |
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#include |
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#include "error.h" |
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/* This variable is incremented each time `error' is called. */ |
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unsigned int error_message_count; |
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char *strerror_r (); |
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/* The calling program should define program_name and set it to the |
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name of the executing program. */ |
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//extern char *program_name; |
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static void |
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print_errno_message (int errnum) |
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{ |
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char const *s; |
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s = strerror (errnum); |
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fprintf (stderr, ": %s", s); |
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} |
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static void |
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error_tail (int status, int errnum, const char *message, va_list args) |
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{ |
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vfprintf (stderr, message, args); |
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va_end (args); |
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++error_message_count; |
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if (errnum) |
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print_errno_message (errnum); |
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putc ('\n', stderr); |
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fflush (stderr); |
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if (status) |
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exit (status); |
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} |
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/* Print the program name and error message MESSAGE, which is a printf-style |
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format string with optional args. |
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If ERRNUM is nonzero, print its corresponding system error message. |
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Exit with status STATUS if it is nonzero. */ |
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void |
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error (int status, int errnum, const char *message, ...) |
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{ |
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va_list args; |
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// fflush (stdout); |
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// fprintf (stderr, "%s: ", program_name); |
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va_start (args, message); |
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error_tail (status, errnum, message, args); |
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}; |
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/* Sometimes we want to have at most one error per line. This |
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variable controls whether this mode is selected or not. */ |
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int error_one_per_line; |
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void |
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error_at_line (int status, int errnum, const char *file_name, |
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unsigned int line_number, const char *message, ...) |
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{ |
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va_list args; |
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if (error_one_per_line) |
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{ |
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static const char *old_file_name; |
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static unsigned int old_line_number; |
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if (old_line_number == line_number |
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&& (file_name == old_file_name |
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|| strcmp (old_file_name, file_name) == 0)) |
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/* Simply return and print nothing. */ |
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return; |
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old_file_name = file_name; |
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old_line_number = line_number; |
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} |
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// fflush (stdout); |
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fprintf (stderr, file_name != NULL ? "%s:%d: " : " ", |
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file_name, line_number); |
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va_start (args, message); |
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error_tail (status, errnum, message, args); |
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} |
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