From: Paul Eggert Date: Tue, 21 Aug 2001 02:56:57 +0000 (+0000) Subject: glibc version. X-Git-Url: https://git.brokenzipper.com/gitweb?a=commitdiff_plain;h=01244cf13350f99483e8844a476e3d890254e9f9;p=chaz%2Ftar glibc version. --- diff --git a/lib/error.c b/lib/error.c new file mode 100644 index 0000000..aa0d8bb --- /dev/null +++ b/lib/error.c @@ -0,0 +1,368 @@ +/* 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 . */ + +#ifdef HAVE_CONFIG_H +# include +#endif + +#include +#include +#ifdef _LIBC +# include +# define mbsrtowcs __mbsrtowcs +#endif + +#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_HEADERS || _LIBC +# include +# include +#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 + +/* 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 */ + +/* 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 +} + +/* 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