X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Ferror.c;h=5dbd4d726ee812ddedc5c7729c5960244d286cf2;hb=c3c259f0bef8cfd8d47606475348f088f7b0e120;hp=a65d644d1bca69cfb9628864bea8f85bc1015dc8;hpb=b80c3874f57e48b2f44192cc3cc1cc93cef6e8d4;p=gnulib.git diff --git a/lib/error.c b/lib/error.c index a65d644d1..5dbd4d726 100644 --- a/lib/error.c +++ b/lib/error.c @@ -1,29 +1,33 @@ -/* error.c -- error handler for noninteractive utilities - Copyright (C) 1990, 91, 92, 93, 94, 95 Free Software Foundation, Inc. +/* Error handler for noninteractive utilities + Copyright (C) 1990-2000 Free Software Foundation, Inc. - 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 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. - This program is distributed in the hope that it will be useful, + 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 General Public License for more details. + 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 General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + 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 . */ #ifdef HAVE_CONFIG_H -#include +# include #endif #include -#if HAVE_VPRINTF || HAVE_DOPRNT +#if HAVE_VPRINTF || HAVE_DOPRNT || _LIBC # if __STDC__ # include # define VA_START(args, lastarg) va_start(args, lastarg) @@ -36,30 +40,63 @@ # define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8; #endif -#if STDC_HEADERS +#if STDC_HEADERS || _LIBC # include # include #else void exit (); #endif -/* This variable is incremented each time `error' is called. */ -unsigned int error_message_count; +#include "error.h" + +#ifndef HAVE_DECL_STRERROR_R +"this configure-time declaration test was not run" +#endif +#if !HAVE_DECL_STRERROR_R +char *strerror_r (); +#endif + +#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) () = NULL; +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 + +/* 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 + +#else /* not _LIBC */ /* The calling program should define program_name and set it to the name of the executing program. */ extern char *program_name; -#if HAVE_STRERROR -# ifndef strerror /* On some systems, sterror is a macro */ +# 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 +# endif +# else static char * private_strerror (errnum) int errnum; @@ -68,11 +105,13 @@ private_strerror (errnum) extern int sys_nerr; if (errnum > 0 && errnum <= sys_nerr) - return sys_errlist[errnum]; - return "Unknown system error"; + return _(sys_errlist[errnum]); + return _("Unknown system error"); } -#define strerror private_strerror -#endif +# 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. @@ -81,7 +120,7 @@ private_strerror (errnum) /* VARARGS */ void -#if defined(VA_START) && __STDC__ +#if defined VA_START && __STDC__ error (int status, int errnum, const char *message, ...) #else error (status, errnum, message, va_alist) @@ -105,7 +144,7 @@ error (status, errnum, message, va_alist) #ifdef VA_START VA_START (args, message); -# if HAVE_VPRINTF +# if HAVE_VPRINTF || _LIBC vfprintf (stderr, message, args); # else _doprnt (message, args, stderr); @@ -116,11 +155,114 @@ error (status, errnum, message, va_alist) #endif ++error_message_count; + if (errnum) + { +#if defined HAVE_STRERROR_R || _LIBC + char errbuf[1024]; +# if HAVE_WORKING_STRERROR_R || _LIBC + fprintf (stderr, ": %s", __strerror_r (errnum, errbuf, sizeof errbuf)); +# else + /* Don't use __strerror_r's return value because on some systems + (at least DEC UNIX 4.0[A-D]) strerror_r returns `int'. */ + __strerror_r (errnum, errbuf, sizeof errbuf); + fprintf (stderr, ": %s", errbuf); +# endif +#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) - fprintf (stderr, ": %s", strerror (errnum)); + { +#if defined HAVE_STRERROR_R || _LIBC + char errbuf[1024]; +# if HAVE_WORKING_STRERROR_R || _LIBC + fprintf (stderr, ": %s", __strerror_r (errnum, errbuf, sizeof errbuf)); +# else + /* Don't use __strerror_r's return value because on some systems + (at least DEC UNIX 4.0[A-D]) strerror_r returns `int'. */ + __strerror_r (errnum, errbuf, sizeof errbuf); + fprintf (stderr, ": %s", errbuf); +# endif +#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