X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Ferror.c;h=c02abcee8a65752fb4de153accd9d08a0c063418;hb=fcb2bdb0c19d2cd00aac07960b98c886752b5637;hp=541cb0dc978783dd0124a9fe8a05c3c726073869;hpb=a76c51d1f609cbbb533371bc42649b25f9d62ed5;p=gnulib.git diff --git a/lib/error.c b/lib/error.c index 541cb0dc9..c02abcee8 100644 --- a/lib/error.c +++ b/lib/error.c @@ -1,27 +1,37 @@ -/* error.c -- error handler for noninteractive utilities - Copyright (C) 1990, 91, 92, 93, 94, 95, 96 Free Software Foundation, Inc. +/* 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. - 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. + 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. - This program is distributed in the hope that it will be useful, + 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 + Lesser 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. */ + 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 . */ -#if HAVE_CONFIG_H +#ifdef HAVE_CONFIG_H # include #endif #include +#if HAVE_LIBINTL_H +# include +#endif +#ifdef _LIBC +# include +# define mbsrtowcs __mbsrtowcs +#endif #if HAVE_VPRINTF || HAVE_DOPRNT || _LIBC # if __STDC__ @@ -43,13 +53,13 @@ void exit (); #endif +#include "error.h" +#include "unlocked-io.h" + #ifndef _ # define _(String) String #endif -/* Get prototypes for the functions defined here. */ -#include - /* 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. */ @@ -68,40 +78,172 @@ unsigned int error_message_count; # define program_name program_invocation_name # include -#else +/* 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 +# define fflush(s) _IO_fflush (s) +# endif + +#else /* not _LIBC */ + +# if !HAVE_DECL_STRERROR_R && STRERROR_R_CHAR_P +# ifndef HAVE_DECL_STRERROR_R +"this configure-time declaration test was not run" +# endif +char *strerror_r (); +# endif /* 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, strerror is a macro */ -char *strerror (); -# endif +# if HAVE_STRERROR_R || defined strerror_r +# define __strerror_r strerror_r # else +# if HAVE_STRERROR +# ifndef HAVE_DECL_STRERROR +"this configure-time declaration test was not run" +# endif +# if !HAVE_DECL_STRERROR +char *strerror (); +# endif +# else static char * -private_strerror (errnum) - int errnum; +private_strerror (int errnum) { extern char *sys_errlist[]; extern int sys_nerr; if (errnum > 0 && errnum <= sys_nerr) - return sys_errlist[errnum]; + return _(sys_errlist[errnum]); return _("Unknown system error"); } -# define strerror private_strerror -# endif /* HAVE_STRERROR */ -#endif /* _LIBC */ +# define strerror private_strerror +# endif /* HAVE_STRERROR */ +# endif /* HAVE_STRERROR_R || defined strerror_r */ +#endif /* not _LIBC */ + +static void +print_errno_message (int errnum) +{ + char const *s; + +#if defined HAVE_STRERROR_R || _LIBC + char errbuf[1024]; +# if STRERROR_R_CHAR_P || _LIBC + s = __strerror_r (errnum, errbuf, sizeof errbuf); +# else + if (__strerror_r (errnum, errbuf, sizeof errbuf) == 0) + s = errbuf; + else + s = 0; +# endif +#else + s = strerror (errnum); +#endif + +#if !_LIBC + if (! s) + s = _("Unknown system error"); +#endif + +#if _LIBC && USE_IN_LIBIO + if (_IO_fwide (stderr, 0) > 0) + { + __fwprintf (stderr, L": %s", s); + return; + } +#endif + + fprintf (stderr, ": %s", s); +} + +#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) + print_errno_message (errnum); +# 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__ +#if defined VA_START && __STDC__ error (int status, int errnum, const char *message, ...) #else error (status, errnum, message, va_alist) @@ -115,33 +257,48 @@ error (status, errnum, message, va_alist) 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 { - fflush (stdout); - fprintf (stderr, "%s: ", program_name); +#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); -# if HAVE_VPRINTF || _LIBC - vfprintf (stderr, message, args); -# else - _doprnt (message, args, stderr); -# endif - va_end (args); + error_tail (status, errnum, message, args); #else fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8); -#endif ++error_message_count; if (errnum) - fprintf (stderr, ": %s", strerror (errnum)); + print_errno_message (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 } /* Sometimes we want to have at most one error per line. This @@ -149,7 +306,7 @@ error (status, errnum, message, va_alist) int error_one_per_line; void -#if defined(VA_START) && __STDC__ +#if defined VA_START && __STDC__ error_at_line (int status, int errnum, const char *file_name, unsigned int line_number, const char *message, ...) #else @@ -171,8 +328,9 @@ error_at_line (status, errnum, file_name, line_number, message, va_alist) 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))) + if (old_line_number == line_number + && (file_name == old_file_name + || strcmp (old_file_name, file_name) == 0)) /* Simply return and print nothing. */ return; @@ -180,34 +338,64 @@ error_at_line (status, errnum, file_name, line_number, message, va_alist) 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 { - fflush (stdout); - fprintf (stderr, "%s:", program_name); +#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) - fprintf (stderr, "%s:%d: ", file_name, line_number); + { +#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); -# if HAVE_VPRINTF || _LIBC - vfprintf (stderr, message, args); -# else - _doprnt (message, args, stderr); -# endif - va_end (args); + error_tail (status, errnum, message, args); #else fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8); -#endif ++error_message_count; if (errnum) - fprintf (stderr, ": %s", strerror (errnum)); + print_errno_message (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