| Index: bison/src/bison/2.4.1/bison-2.4.1-src/lib/error.c
|
| ===================================================================
|
| --- bison/src/bison/2.4.1/bison-2.4.1-src/lib/error.c (revision 0)
|
| +++ bison/src/bison/2.4.1/bison-2.4.1-src/lib/error.c (revision 0)
|
| @@ -0,0 +1,338 @@
|
| +/* Error handler for noninteractive utilities
|
| + Copyright (C) 1990-1998, 2000-2007 Free Software Foundation, Inc.
|
| + This file is part of the GNU C Library.
|
| +
|
| + 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 3 of the License, 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, see <http://www.gnu.org/licenses/>. */
|
| +
|
| +/* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */
|
| +
|
| +#if !_LIBC
|
| +# include <config.h>
|
| +#endif
|
| +
|
| +#include "error.h"
|
| +
|
| +#include <stdarg.h>
|
| +#include <stdio.h>
|
| +#include <stdlib.h>
|
| +#include <string.h>
|
| +
|
| +#if !_LIBC && ENABLE_NLS
|
| +# include "gettext.h"
|
| +# define _(msgid) gettext (msgid)
|
| +#endif
|
| +
|
| +#ifdef _LIBC
|
| +# include <libintl.h>
|
| +# include <stdbool.h>
|
| +# include <stdint.h>
|
| +# include <wchar.h>
|
| +# define mbsrtowcs __mbsrtowcs
|
| +#endif
|
| +
|
| +#if USE_UNLOCKED_IO
|
| +# include "unlocked-io.h"
|
| +#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) (void);
|
| +
|
| +/* 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>
|
| +# include <limits.h>
|
| +# include <libio/libioP.h>
|
| +
|
| +/* 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
|
| +
|
| +# include <libio/iolibio.h>
|
| +# define fflush(s) INTUSE(_IO_fflush) (s)
|
| +# undef putc
|
| +# define putc(c, fp) INTUSE(_IO_putc) (c, fp)
|
| +
|
| +# include <bits/libc-lock.h>
|
| +
|
| +#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_R || defined strerror_r
|
| +# define __strerror_r strerror_r
|
| +# 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
|
| + __fxprintf (NULL, ": %s", s);
|
| +#else
|
| + fprintf (stderr, ": %s", s);
|
| +#endif
|
| +}
|
| +
|
| +static void
|
| +error_tail (int status, int errnum, const char *message, va_list args)
|
| +{
|
| +#if _LIBC
|
| + 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;
|
| + bool use_malloc = false;
|
| +
|
| + while (1)
|
| + {
|
| + if (__libc_use_alloca (len * sizeof (wchar_t)))
|
| + wmessage = (wchar_t *) alloca (len * sizeof (wchar_t));
|
| + else
|
| + {
|
| + if (!use_malloc)
|
| + wmessage = NULL;
|
| +
|
| + wchar_t *p = (wchar_t *) realloc (wmessage,
|
| + len * sizeof (wchar_t));
|
| + if (p == NULL)
|
| + {
|
| + free (wmessage);
|
| + fputws_unlocked (L"out of memory\n", stderr);
|
| + return;
|
| + }
|
| + wmessage = p;
|
| + use_malloc = true;
|
| + }
|
| +
|
| + memset (&st, '\0', sizeof (st));
|
| + tmp = message;
|
| +
|
| + res = mbsrtowcs (wmessage, &tmp, len, &st);
|
| + if (res != len)
|
| + break;
|
| +
|
| + if (__builtin_expect (len >= SIZE_MAX / 2, 0))
|
| + {
|
| + /* This really should not happen if everything is fine. */
|
| + res = (size_t) -1;
|
| + break;
|
| + }
|
| +
|
| + len *= 2;
|
| + }
|
| +
|
| + if (res == (size_t) -1)
|
| + {
|
| + /* The string cannot be converted. */
|
| + if (use_malloc)
|
| + {
|
| + free (wmessage);
|
| + use_malloc = false;
|
| + }
|
| + wmessage = (wchar_t *) L"???";
|
| + }
|
| +
|
| + __vfwprintf (stderr, wmessage, args);
|
| +
|
| + if (use_malloc)
|
| + free (wmessage);
|
| + }
|
| + else
|
| +#endif
|
| + vfprintf (stderr, message, args);
|
| + va_end (args);
|
| +
|
| + ++error_message_count;
|
| + if (errnum)
|
| + print_errno_message (errnum);
|
| +#if _LIBC
|
| + __fxprintf (NULL, "\n");
|
| +#else
|
| + putc ('\n', stderr);
|
| +#endif
|
| + fflush (stderr);
|
| + if (status)
|
| + exit (status);
|
| +}
|
| +
|
| +
|
| +/* 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. */
|
| +void
|
| +error (int status, int errnum, const char *message, ...)
|
| +{
|
| + va_list args;
|
| +
|
| +#if defined _LIBC && defined __libc_ptf_call
|
| + /* We do not want this call to be cut short by a thread
|
| + cancellation. Therefore disable cancellation for now. */
|
| + int state = PTHREAD_CANCEL_ENABLE;
|
| + __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
|
| + 0);
|
| +#endif
|
| +
|
| + fflush (stdout);
|
| +#ifdef _LIBC
|
| + _IO_flockfile (stderr);
|
| +#endif
|
| + if (error_print_progname)
|
| + (*error_print_progname) ();
|
| + else
|
| + {
|
| +#if _LIBC
|
| + __fxprintf (NULL, "%s: ", program_name);
|
| +#else
|
| + fprintf (stderr, "%s: ", program_name);
|
| +#endif
|
| + }
|
| +
|
| + va_start (args, message);
|
| + error_tail (status, errnum, message, args);
|
| +
|
| +#ifdef _LIBC
|
| + _IO_funlockfile (stderr);
|
| +# ifdef __libc_ptf_call
|
| + __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
|
| +# 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
|
| +error_at_line (int status, int errnum, const char *file_name,
|
| + unsigned int line_number, const char *message, ...)
|
| +{
|
| + va_list args;
|
| +
|
| + 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;
|
| + }
|
| +
|
| +#if defined _LIBC && defined __libc_ptf_call
|
| + /* We do not want this call to be cut short by a thread
|
| + cancellation. Therefore disable cancellation for now. */
|
| + int state = PTHREAD_CANCEL_ENABLE;
|
| + __libc_ptf_call (pthread_setcancelstate, (PTHREAD_CANCEL_DISABLE, &state),
|
| + 0);
|
| +#endif
|
| +
|
| + fflush (stdout);
|
| +#ifdef _LIBC
|
| + _IO_flockfile (stderr);
|
| +#endif
|
| + if (error_print_progname)
|
| + (*error_print_progname) ();
|
| + else
|
| + {
|
| +#if _LIBC
|
| + __fxprintf (NULL, "%s:", program_name);
|
| +#else
|
| + fprintf (stderr, "%s:", program_name);
|
| +#endif
|
| + }
|
| +
|
| +#if _LIBC
|
| + __fxprintf (NULL, file_name != NULL ? "%s:%d: " : " ",
|
| + file_name, line_number);
|
| +#else
|
| + fprintf (stderr, file_name != NULL ? "%s:%d: " : " ",
|
| + file_name, line_number);
|
| +#endif
|
| +
|
| + va_start (args, message);
|
| + error_tail (status, errnum, message, args);
|
| +
|
| +#ifdef _LIBC
|
| + _IO_funlockfile (stderr);
|
| +# ifdef __libc_ptf_call
|
| + __libc_ptf_call (pthread_setcancelstate, (state, NULL), 0);
|
| +# 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
|
|
|
| Property changes on: bison\src\bison\2.4.1\bison-2.4.1-src\lib\error.c
|
| ___________________________________________________________________
|
| Added: svn:eol-style
|
| + LF
|
|
|
|
|