Edit
thodg/libiconv/srclib/error.c
Bruno Haible
- srclib/error.c
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/* Error handler for noninteractive utilities Copyright (C) 1990-1998, 2000-2002 Free Software Foundation, Inc. NOTE: The canonical source of this file is maintained with the GNU C Library. Bugs can be reported to bug-glibc@gnu.org. 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., 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 #if !HAVE_ERROR_AT_LINE #include <stdio.h> #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" #ifdef _LIBC # include <libintl.h> #else # include "gettext.h" #endif #define _(msgid) gettext (msgid) /* 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. */ # 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 */ /* 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 if (error_print_progname) (*error_print_progname) (); else { fflush (stdout); fprintf (stderr, "%s: ", program_name); } #ifdef VA_START VA_START (args, message); # if HAVE_VPRINTF || _LIBC vfprintf (stderr, message, args); # else _doprnt (message, args, stderr); # endif va_end (args); #else fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8); #endif ++error_message_count; if (errnum) { #if defined HAVE_STRERROR_R || _LIBC char errbuf[1024]; fprintf (stderr, ": %s", __strerror_r (errnum, errbuf, sizeof errbuf)); #else fprintf (stderr, ": %s", strerror (errnum)); #endif } putc ('\n', stderr); fflush (stderr); if (status) exit (status); } /* 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))) /* Simply return and print nothing. */ return; old_file_name = file_name; old_line_number = line_number; } if (error_print_progname) (*error_print_progname) (); else { fflush (stdout); fprintf (stderr, "%s:", program_name); } if (file_name != NULL) fprintf (stderr, "%s:%d: ", file_name, line_number); #ifdef VA_START VA_START (args, message); # if HAVE_VPRINTF || _LIBC vfprintf (stderr, message, args); # else _doprnt (message, args, stderr); # endif va_end (args); #else fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8); #endif ++error_message_count; if (errnum) { #if defined HAVE_STRERROR_R || _LIBC char errbuf[1024]; fprintf (stderr, ": %s", __strerror_r (errnum, errbuf, sizeof errbuf)); #else fprintf (stderr, ": %s", strerror (errnum)); #endif } putc ('\n', stderr); fflush (stderr); if (status) exit (status); } #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 #endif