--- /dev/null
+/* 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 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>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include <libintl.h>
+#ifdef _LIBC
+# include <wchar.h>
+# define mbsrtowcs __mbsrtowcs
+#endif
+
+#if HAVE_VPRINTF || HAVE_DOPRNT || _LIBC
+# if __STDC__
+# include <stdarg.h>
+# define VA_START(args, lastarg) va_start(args, lastarg)
+# else
+# include <varargs.h>
+# define VA_START(args, lastarg) va_start(args)
+# endif
+#else
+# define va_alist a1, a2, a3, a4, a5, a6, a7, a8
+# define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8;
+#endif
+
+#if STDC_HEADERS || _LIBC
+# include <stdlib.h>
+# include <string.h>
+#else
+void exit ();
+#endif
+
+#include "error.h"
+
+#ifndef _
+# define _(String) String
+#endif
+
+/* If NULL, error will flush stdout, then print on stderr the program
+ name, a colon and a space. Otherwise, error will call this
+ function without parameters instead. */
+void (*error_print_progname) (
+#if __STDC__ - 0
+ void
+#endif
+ );
+
+/* This variable is incremented each time `error' is called. */
+unsigned int error_message_count;
+
+#ifdef _LIBC
+/* In the GNU C library, there is a predefined variable for this. */
+
+# define program_name program_invocation_name
+# include <errno.h>
+
+/* In GNU libc we want do not want to use the common name `error' directly.
+ Instead make it a weak alias. */
+extern void __error (int status, int errnum, const char *message, ...)
+ __attribute__ ((__format__ (__printf__, 3, 4)));
+extern void __error_at_line (int status, int errnum, const char *file_name,
+ unsigned int line_number, const char *message,
+ ...)
+ __attribute__ ((__format__ (__printf__, 5, 6)));;
+# define error __error
+# define error_at_line __error_at_line
+
+# ifdef USE_IN_LIBIO
+# include <libio/iolibio.h>
+# define fflush(s) _IO_fflush (s)
+# endif
+
+#else /* not _LIBC */
+
+/* The calling program should define program_name and set it to the
+ name of the executing program. */
+extern char *program_name;
+
+# ifdef HAVE_STRERROR_R
+# define __strerror_r strerror_r
+# else
+# if HAVE_STRERROR
+# ifndef strerror /* On some systems, strerror is a macro */
+char *strerror ();
+# endif
+# else
+static char *
+private_strerror (errnum)
+ int errnum;
+{
+ extern char *sys_errlist[];
+ extern int sys_nerr;
+
+ if (errnum > 0 && errnum <= sys_nerr)
+ return _(sys_errlist[errnum]);
+ return _("Unknown system error");
+}
+# define strerror private_strerror
+# endif /* HAVE_STRERROR */
+# endif /* HAVE_STRERROR_R */
+#endif /* not _LIBC */
+
+
+#ifdef VA_START
+static void
+error_tail (int status, int errnum, const char *message, va_list args)
+{
+# if HAVE_VPRINTF || _LIBC
+# if _LIBC && USE_IN_LIBIO
+ if (_IO_fwide (stderr, 0) > 0)
+ {
+# define ALLOCA_LIMIT 2000
+ size_t len = strlen (message) + 1;
+ wchar_t *wmessage = NULL;
+ mbstate_t st;
+ size_t res;
+ const char *tmp;
+
+ do
+ {
+ if (len < ALLOCA_LIMIT)
+ wmessage = (wchar_t *) alloca (len * sizeof (wchar_t));
+ else
+ {
+ if (wmessage != NULL && len / 2 < ALLOCA_LIMIT)
+ wmessage = NULL;
+
+ wmessage = (wchar_t *) realloc (wmessage,
+ len * sizeof (wchar_t));
+
+ if (wmessage == NULL)
+ {
+ fputws_unlocked (L"out of memory\n", stderr);
+ return;
+ }
+ }
+
+ memset (&st, '\0', sizeof (st));
+ tmp =message;
+ }
+ while ((res = mbsrtowcs (wmessage, &tmp, len, &st)) == len);
+
+ if (res == (size_t) -1)
+ /* The string cannot be converted. */
+ wmessage = (wchar_t *) L"???";
+
+ __vfwprintf (stderr, wmessage, args);
+ }
+ else
+# endif
+ vfprintf (stderr, message, args);
+# else
+ _doprnt (message, args, stderr);
+# endif
+ va_end (args);
+
+ ++error_message_count;
+ if (errnum)
+ {
+#if defined HAVE_STRERROR_R || _LIBC
+ char errbuf[1024];
+ char *s = __strerror_r (errnum, errbuf, sizeof errbuf);
+# if _LIBC && USE_IN_LIBIO
+ if (_IO_fwide (stderr, 0) > 0)
+ __fwprintf (stderr, L": %s", s);
+ else
+# endif
+ fprintf (stderr, ": %s", s);
+#else
+ fprintf (stderr, ": %s", strerror (errnum));
+#endif
+ }
+#if _LIBC && USE_IN_LIBIO
+ if (_IO_fwide (stderr, 0) > 0)
+ putwc (L'\n', stderr);
+ else
+#endif
+ putc ('\n', stderr);
+ fflush (stderr);
+ if (status)
+ exit (status);
+}
+#endif
+
+
+/* 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. */
+/* VARARGS */
+void
+#if defined VA_START && __STDC__
+error (int status, int errnum, const char *message, ...)
+#else
+error (status, errnum, message, va_alist)
+ int status;
+ int errnum;
+ char *message;
+ va_dcl
+#endif
+{
+#ifdef VA_START
+ va_list args;
+#endif
+
+ fflush (stdout);
+#ifdef _LIBC
+# ifdef USE_IN_LIBIO
+ _IO_flockfile (stderr);
+# else
+ __flockfile (stderr);
+# endif
+#endif
+ if (error_print_progname)
+ (*error_print_progname) ();
+ else
+ {
+#if _LIBC && USE_IN_LIBIO
+ if (_IO_fwide (stderr, 0) > 0)
+ __fwprintf (stderr, L"%s: ", program_name);
+ else
+#endif
+ fprintf (stderr, "%s: ", program_name);
+ }
+
+#ifdef VA_START
+ VA_START (args, message);
+ error_tail (status, errnum, message, args);
+#else
+ fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
+
+ ++error_message_count;
+ if (errnum)
+ fprintf (stderr, ": %s", strerror (errnum));
+ putc ('\n', stderr);
+ fflush (stderr);
+ if (status)
+ exit (status);
+#endif
+
+#ifdef _LIBC
+# ifdef USE_IN_LIBIO
+ _IO_funlockfile (stderr);
+# else
+ __funlockfile (stderr);
+# endif
+#endif
+}
+\f
+/* 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
+#if defined VA_START && __STDC__
+error_at_line (int status, int errnum, const char *file_name,
+ unsigned int line_number, const char *message, ...)
+#else
+error_at_line (status, errnum, file_name, line_number, message, va_alist)
+ int status;
+ int errnum;
+ const char *file_name;
+ unsigned int line_number;
+ char *message;
+ va_dcl
+#endif
+{
+#ifdef VA_START
+ va_list args;
+#endif
+
+ 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);
+#ifdef _LIBC
+# ifdef USE_IN_LIBIO
+ _IO_flockfile (stderr);
+# else
+ __flockfile (stderr);
+# endif
+#endif
+ if (error_print_progname)
+ (*error_print_progname) ();
+ else
+ {
+#if _LIBC && USE_IN_LIBIO
+ if (_IO_fwide (stderr, 0) > 0)
+ __fwprintf (stderr, L"%s: ", program_name);
+ else
+#endif
+ fprintf (stderr, "%s:", program_name);
+ }
+
+ if (file_name != NULL)
+ {
+#if _LIBC && USE_IN_LIBIO
+ if (_IO_fwide (stderr, 0) > 0)
+ __fwprintf (stderr, L"%s:%d: ", file_name, line_number);
+ else
+#endif
+ fprintf (stderr, "%s:%d: ", file_name, line_number);
+ }
+
+#ifdef VA_START
+ VA_START (args, message);
+ error_tail (status, errnum, message, args);
+#else
+ fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8);
+
+ ++error_message_count;
+ if (errnum)
+ fprintf (stderr, ": %s", strerror (errnum));
+ putc ('\n', stderr);
+ fflush (stderr);
+ if (status)
+ exit (status);
+#endif
+
+#ifdef _LIBC
+# ifdef USE_IN_LIBIO
+ _IO_funlockfile (stderr);
+# else
+ __funlockfile (stderr);
+# endif
+#endif
+}
+
+#ifdef _LIBC
+/* Make the weak alias. */
+# undef error
+# undef error_at_line
+weak_alias (__error, error)
+weak_alias (__error_at_line, error_at_line)
+#endif
projects / chaz / tar / commitdiff
