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authorEric Andersen <andersen@codepoet.org>2002-03-15 12:11:37 +0000
committerEric Andersen <andersen@codepoet.org>2002-03-15 12:11:37 +0000
commit4d40c3c17e5165f646b6cec179e6ac4ab51cc9f1 (patch)
tree87436a08ec1a6d6d9dadee78d1a639ead8d1cd5a /libc/misc/error/error.c
parent8dbb3b0aac021c3ff617c78bd4d1b42ab57d0c01 (diff)
Support gnu error(), patch contributed by Andrew Ip <aip@cwlinux.com>
Diffstat (limited to 'libc/misc/error/error.c')
-rw-r--r--libc/misc/error/error.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/libc/misc/error/error.c b/libc/misc/error/error.c
new file mode 100644
index 000000000..25ea5075c
--- /dev/null
+++ b/libc/misc/error/error.c
@@ -0,0 +1,98 @@
+/* Error handler for noninteractive utilities
+ Copyright (C) 1990-1998, 2000, 2001 Free Software Foundation, Inc.
+
+ This file is part of the GNU C Library. Its master source is NOT part of
+ the C library, however. The master source lives in /gd/gnu/lib.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. 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>. */
+/* Adjusted slightly by Erik Andersen <andersen@uclibc.org> */
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+#include <string.h>
+#include "error.h"
+
+
+/* This variable is incremented each time `error' is called. */
+unsigned int error_message_count;
+/* Sometimes we want to have at most one error per line. This
+ variable controls whether this mode is selected or not. */
+static int error_one_per_line;
+
+
+void __error (int status, int errnum, const char *message, ...)
+{
+ va_list args;
+
+ fflush (stdout);
+
+ va_start (args, message);
+ vfprintf (stderr, message, args);
+ va_end (args);
+ ++error_message_count;
+ if (errnum) {
+ fprintf (stderr, ": %s", strerror (errnum));
+ }
+ putc ('\n', stderr);
+ if (status)
+ exit (status);
+}
+
+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)))
+ /* Simply return and print nothing. */
+ return;
+
+ old_file_name = file_name;
+ old_line_number = line_number;
+ }
+
+ fflush (stdout);
+
+ if (file_name != NULL)
+ fprintf (stderr, "%s:%d: ", file_name, line_number);
+
+ va_start (args, message);
+ vfprintf (stderr, message, args);
+ va_end (args);
+
+ ++error_message_count;
+ if (errnum) {
+ fprintf (stderr, ": %s", strerror (errnum));
+ }
+ putc ('\n', stderr);
+ if (status)
+ exit (status);
+}
+
+/* Use the weaks here in an effort at controlling namespace pollution */
+#undef error
+#undef error_at_line
+weak_alias (__error, error)
+weak_alias (__error_at_line, error_at_line)
+