X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Ferror.c;h=e5f1daba46a81958033f9f88d3541484f1dc063c;hb=0941f53a92efc360e019b76923d0ecd380849939;hp=7e61f150707c9f27f8e098d477f5fd45f2bf2cbe;hpb=43e78b970f396160a887c9da94531569faeda8a0;p=gnulib.git diff --git a/lib/error.c b/lib/error.c index 7e61f1507..e5f1daba4 100644 --- a/lib/error.c +++ b/lib/error.c @@ -1,5 +1,5 @@ /* error.c -- error handler for noninteractive utilities - Copyright (C) 1990, 1991, 1992 Free Software Foundation, Inc. + Copyright (C) 1990, 91, 92, 93, 94, 95, 96 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 @@ -12,43 +12,73 @@ 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ + 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. */ +/* Written by David MacKenzie . */ + +#if HAVE_CONFIG_H +# include +#endif #include -#ifdef HAVE_VPRINTF +#if HAVE_VPRINTF || HAVE_DOPRNT || _LIBC +# if __STDC__ +# include +# define VA_START(args, lastarg) va_start(args, lastarg) +# else +# include +# 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__ -#include -#define VA_START(args, lastarg) va_start(args, lastarg) -#else /* !__STDC__ */ -#include -#define VA_START(args, lastarg) va_start(args) -#endif /* !__STDC__ */ +#if STDC_HEADERS || _LIBC +# include +# include +#else +void exit (); +#endif -#else /* !HAVE_VPRINTF */ +#ifndef _ +# define _(String) String +#endif -#ifdef HAVE_DOPRNT -#define va_alist args -#define va_dcl int args; -#else /* !HAVE_DOPRNT */ -#define va_alist a1, a2, a3, a4, a5, a6, a7, a8 -#define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8; -#endif /* !HAVE_DOPRNT */ +/* Get prototypes for the functions defined here. */ +#include -#endif /* !HAVE_VPRINTF */ +/* 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 + ); -#ifdef STDC_HEADERS -#include -#include -#else /* !STDC_HEADERS */ -void exit (); -#endif /* !STDC_HEADERS */ +/* 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 -#ifndef HAVE_STRERROR +#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, strerror is a macro */ +char *strerror (); +# endif +# else static char * private_strerror (errnum) int errnum; @@ -58,44 +88,123 @@ private_strerror (errnum) if (errnum > 0 && errnum <= sys_nerr) return sys_errlist[errnum]; - return "Unknown system error"; + return _("Unknown system error"); } -#define strerror private_strerror -#endif /* !HAVE_STRERROR */ +# define strerror private_strerror +# endif /* HAVE_STRERROR */ + +#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 (HAVE_VPRINTF) && __STDC__ -error (int status, int errnum, char *message, ...) -#else /* !HAVE_VPRINTF or !__STDC__ */ +#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 /* !HAVE_VPRINTF or !__STDC__ */ +#endif { - extern char *program_name; -#ifdef HAVE_VPRINTF +#ifdef VA_START va_list args; -#endif /* HAVE_VPRINTF */ +#endif + + if (error_print_progname) + (*error_print_progname) (); + else + { + fflush (stdout); + fprintf (stderr, "%s: ", program_name); + } - fprintf (stderr, "%s: ", program_name); -#ifdef HAVE_VPRINTF +#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 /* !HAVE_VPRINTF */ -#ifdef HAVE_DOPRNT - _doprnt (message, &args, stderr); -#else /* !HAVE_DOPRNT */ +#else fprintf (stderr, message, a1, a2, a3, a4, a5, a6, a7, a8); -#endif /* !HAVE_DOPRNT */ -#endif /* !HAVE_VPRINTF */ +#endif + + ++error_message_count; + if (errnum) + fprintf (stderr, ": %s", strerror (errnum)); + 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)); putc ('\n', stderr);