2349 lines
62 KiB
C
2349 lines
62 KiB
C
/*
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Chris Torek.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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FUNCTION
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<<vfprintf>>, <<vprintf>>, <<vsprintf>>, <<vsnprintf>>, <<vasprintf>>, <<vasnprintf>>---format argument list
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INDEX
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vfprintf
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INDEX
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_vfprintf_r
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INDEX
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vprintf
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INDEX
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_vprintf_r
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INDEX
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vsprintf
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INDEX
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_vsprintf_r
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INDEX
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vsnprintf
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INDEX
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_vsnprintf_r
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INDEX
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vasprintf
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INDEX
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_vasprintf_r
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INDEX
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vasnprintf
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INDEX
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_vasnprintf_r
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SYNOPSIS
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#include <stdio.h>
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#include <stdarg.h>
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int vprintf(const char *<[fmt]>, va_list <[list]>);
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int vfprintf(FILE *<[fp]>, const char *<[fmt]>, va_list <[list]>);
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int vsprintf(char *<[str]>, const char *<[fmt]>, va_list <[list]>);
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int vsnprintf(char *<[str]>, size_t <[size]>, const char *<[fmt]>,
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va_list <[list]>);
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int vasprintf(char **<[strp]>, const char *<[fmt]>, va_list <[list]>);
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char *vasnprintf(char *<[str]>, size_t *<[size]>, const char *<[fmt]>,
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va_list <[list]>);
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int _vprintf_r(struct _reent *<[reent]>, const char *<[fmt]>,
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va_list <[list]>);
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int _vfprintf_r(struct _reent *<[reent]>, FILE *<[fp]>,
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const char *<[fmt]>, va_list <[list]>);
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int _vsprintf_r(struct _reent *<[reent]>, char *<[str]>,
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const char *<[fmt]>, va_list <[list]>);
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int _vasprintf_r(struct _reent *<[reent]>, char **<[str]>,
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const char *<[fmt]>, va_list <[list]>);
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int _vsnprintf_r(struct _reent *<[reent]>, char *<[str]>,
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size_t <[size]>, const char *<[fmt]>, va_list <[list]>);
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char *_vasnprintf_r(struct _reent *<[reent]>, char *<[str]>,
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size_t *<[size]>, const char *<[fmt]>, va_list <[list]>);
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DESCRIPTION
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<<vprintf>>, <<vfprintf>>, <<vasprintf>>, <<vsprintf>>, <<vsnprintf>>,
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and <<vasnprintf>> are (respectively) variants of <<printf>>,
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<<fprintf>>, <<asprintf>>, <<sprintf>>, <<snprintf>>, and
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<<asnprintf>>. They differ only in allowing their caller to pass the
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variable argument list as a <<va_list>> object (initialized by
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<<va_start>>) rather than directly accepting a variable number of
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arguments. The caller is responsible for calling <<va_end>>.
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<<_vprintf_r>>, <<_vfprintf_r>>, <<_vasprintf_r>>, <<_vsprintf_r>>,
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<<_vsnprintf_r>>, and <<_vasnprintf_r>> are reentrant versions of the
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above.
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RETURNS
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The return values are consistent with the corresponding functions.
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PORTABILITY
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ANSI C requires <<vprintf>>, <<vfprintf>>, <<vsprintf>>, and
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<<vsnprintf>>. The remaining functions are newlib extensions.
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Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
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<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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/*static char *sccsid = "from: @(#)vfprintf.c 5.50 (Berkeley) 12/16/92";*/
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static char *rcsid = "$Id$";
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#endif /* LIBC_SCCS and not lint */
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/*
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* Actual printf innards.
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*
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* This code is large and complicated...
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*/
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#include <newlib.h>
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#ifdef INTEGER_ONLY
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# define VFPRINTF vfiprintf
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# ifdef STRING_ONLY
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# define _VFPRINTF_R _svfiprintf_r
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# else
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# define _VFPRINTF_R _vfiprintf_r
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# endif
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#else
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# define VFPRINTF vfprintf
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# ifdef STRING_ONLY
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# define _VFPRINTF_R _svfprintf_r
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# else
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# define _VFPRINTF_R _vfprintf_r
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# endif
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# ifndef NO_FLOATING_POINT
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# define FLOATING_POINT
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# endif
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#endif
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#define _NO_POS_ARGS
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#ifdef _WANT_IO_POS_ARGS
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# undef _NO_POS_ARGS
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#endif
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#include <_ansi.h>
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#include <reent.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <limits.h>
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#include <stdint.h>
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#include <wchar.h>
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#include <sys/lock.h>
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#include <stdarg.h>
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#include "local.h"
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#include "../stdlib/local.h"
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#include "fvwrite.h"
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#include "vfieeefp.h"
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/* Currently a test is made to see if long double processing is warranted.
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This could be changed in the future should the _ldtoa_r code be
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preferred over _dtoa_r. */
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#define _NO_LONGDBL
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#if defined _WANT_IO_LONG_DOUBLE && (LDBL_MANT_DIG > DBL_MANT_DIG)
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#undef _NO_LONGDBL
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#endif
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#define _NO_LONGLONG
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#if defined _WANT_IO_LONG_LONG \
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&& (defined __GNUC__ || __STDC_VERSION__ >= 199901L)
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# undef _NO_LONGLONG
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#endif
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#ifdef STRING_ONLY
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# ifdef _FVWRITE_IN_STREAMIO
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# define __SPRINT __ssprint_r
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# else
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# define __SPRINT __ssputs_r
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# endif
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#else
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# ifdef _FVWRITE_IN_STREAMIO
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# define __SPRINT __sprint_r
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# else
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# define __SPRINT __sfputs_r
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# endif
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#endif
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/* The __sprint_r/__ssprint_r functions are shared between all versions of
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vfprintf and vfwprintf. They must only be defined once, which we do in
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the INTEGER_ONLY versions here. */
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#ifdef STRING_ONLY
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#ifdef INTEGER_ONLY
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#ifndef _FVWRITE_IN_STREAMIO
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int
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__ssputs_r (struct _reent *ptr,
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FILE *fp,
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const char *buf,
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size_t len)
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{
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register int w;
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w = fp->_w;
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if (len >= w && fp->_flags & (__SMBF | __SOPT)) {
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/* must be asprintf family */
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unsigned char *str;
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int curpos = (fp->_p - fp->_bf._base);
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/* Choose a geometric growth factor to avoid
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* quadratic realloc behavior, but use a rate less
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* than (1+sqrt(5))/2 to accomodate malloc
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* overhead. asprintf EXPECTS us to overallocate, so
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* that it can add a trailing \0 without
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* reallocating. The new allocation should thus be
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* max(prev_size*1.5, curpos+len+1). */
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int newsize = fp->_bf._size * 3 / 2;
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if (newsize < curpos + len + 1)
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newsize = curpos + len + 1;
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if (fp->_flags & __SOPT)
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{
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/* asnprintf leaves original buffer alone. */
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str = (unsigned char *)_malloc_r (ptr, newsize);
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if (!str)
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{
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ptr->_errno = ENOMEM;
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goto err;
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}
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memcpy (str, fp->_bf._base, curpos);
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fp->_flags = (fp->_flags & ~__SOPT) | __SMBF;
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}
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else
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{
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str = (unsigned char *)_realloc_r (ptr, fp->_bf._base,
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newsize);
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if (!str) {
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/* Free unneeded buffer. */
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_free_r (ptr, fp->_bf._base);
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/* Ensure correct errno, even if free
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* changed it. */
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ptr->_errno = ENOMEM;
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goto err;
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}
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}
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fp->_bf._base = str;
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fp->_p = str + curpos;
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fp->_bf._size = newsize;
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w = len;
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fp->_w = newsize - curpos;
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}
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if (len < w)
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w = len;
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(void)memmove ((void *) fp->_p, (void *) buf, (size_t) (w));
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fp->_w -= w;
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fp->_p += w;
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return 0;
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err:
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fp->_flags |= __SERR;
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return EOF;
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}
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#endif
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int
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__ssprint_r (struct _reent *ptr,
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FILE *fp,
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register struct __suio *uio)
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{
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register size_t len;
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register int w;
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register struct __siov *iov;
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register const char *p = NULL;
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iov = uio->uio_iov;
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len = 0;
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if (uio->uio_resid == 0) {
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uio->uio_iovcnt = 0;
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return (0);
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}
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do {
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while (len == 0) {
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p = iov->iov_base;
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len = iov->iov_len;
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iov++;
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}
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w = fp->_w;
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if (len >= w && fp->_flags & (__SMBF | __SOPT)) {
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/* must be asprintf family */
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unsigned char *str;
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int curpos = (fp->_p - fp->_bf._base);
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/* Choose a geometric growth factor to avoid
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* quadratic realloc behavior, but use a rate less
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* than (1+sqrt(5))/2 to accomodate malloc
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* overhead. asprintf EXPECTS us to overallocate, so
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* that it can add a trailing \0 without
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* reallocating. The new allocation should thus be
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* max(prev_size*1.5, curpos+len+1). */
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int newsize = fp->_bf._size * 3 / 2;
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if (newsize < curpos + len + 1)
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newsize = curpos + len + 1;
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if (fp->_flags & __SOPT)
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{
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/* asnprintf leaves original buffer alone. */
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str = (unsigned char *)_malloc_r (ptr, newsize);
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if (!str)
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{
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ptr->_errno = ENOMEM;
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goto err;
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}
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memcpy (str, fp->_bf._base, curpos);
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fp->_flags = (fp->_flags & ~__SOPT) | __SMBF;
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}
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else
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{
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str = (unsigned char *)_realloc_r (ptr, fp->_bf._base,
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newsize);
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if (!str) {
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/* Free unneeded buffer. */
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_free_r (ptr, fp->_bf._base);
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/* Ensure correct errno, even if free
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* changed it. */
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ptr->_errno = ENOMEM;
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goto err;
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}
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}
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fp->_bf._base = str;
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fp->_p = str + curpos;
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fp->_bf._size = newsize;
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w = len;
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fp->_w = newsize - curpos;
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}
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if (len < w)
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w = len;
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(void)memmove ((void *) fp->_p, (void *) p, (size_t) (w));
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fp->_w -= w;
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fp->_p += w;
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w = len; /* pretend we copied all */
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p += w;
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len -= w;
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} while ((uio->uio_resid -= w) != 0);
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uio->uio_resid = 0;
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uio->uio_iovcnt = 0;
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return 0;
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err:
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fp->_flags |= __SERR;
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uio->uio_resid = 0;
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uio->uio_iovcnt = 0;
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return EOF;
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}
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#else /* !INTEGER_ONLY */
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#ifndef _FVWRITE_IN_STREAMIO
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int __ssputs_r (struct _reent *, FILE *, const char *, size_t);
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#endif
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int __ssprint_r (struct _reent *, FILE *, register struct __suio *);
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#endif /* !INTEGER_ONLY */
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#else /* !STRING_ONLY */
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#ifdef INTEGER_ONLY
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#ifndef _FVWRITE_IN_STREAMIO
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int
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__sfputs_r (struct _reent *ptr,
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FILE *fp,
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const char *buf,
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size_t len)
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{
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register int i;
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#ifdef _WIDE_ORIENT
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if (fp->_flags2 & __SWID) {
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wchar_t *p;
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p = (wchar_t *) buf;
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for (i = 0; i < (len / sizeof (wchar_t)); i++) {
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if (_fputwc_r (ptr, p[i], fp) == WEOF)
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return -1;
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}
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} else {
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#else
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{
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#endif
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for (i = 0; i < len; i++) {
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if (_fputc_r (ptr, buf[i], fp) == EOF)
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return -1;
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}
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}
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return (0);
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}
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#endif
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/*
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* Flush out all the vectors defined by the given uio,
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* then reset it so that it can be reused.
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*/
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int
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__sprint_r (struct _reent *ptr,
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FILE *fp,
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register struct __suio *uio)
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{
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register int err = 0;
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if (uio->uio_resid == 0) {
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uio->uio_iovcnt = 0;
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return (0);
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}
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#ifdef _WIDE_ORIENT
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if (fp->_flags2 & __SWID) {
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struct __siov *iov;
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wchar_t *p;
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int i, len;
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iov = uio->uio_iov;
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for (; uio->uio_resid != 0;
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uio->uio_resid -= len * sizeof (wchar_t), iov++) {
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p = (wchar_t *) iov->iov_base;
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len = iov->iov_len / sizeof (wchar_t);
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for (i = 0; i < len; i++) {
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if (_fputwc_r (ptr, p[i], fp) == WEOF) {
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err = -1;
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goto out;
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}
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}
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}
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} else
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#endif
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err = __sfvwrite_r(ptr, fp, uio);
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out:
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uio->uio_resid = 0;
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uio->uio_iovcnt = 0;
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return (err);
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}
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#else /* !INTEGER_ONLY */
|
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#ifndef _FVWRITE_IN_STREAMIO
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int __sfputs_r (struct _reent *, FILE *, const char *buf, size_t);
|
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#endif
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int __sprint_r (struct _reent *, FILE *, register struct __suio *);
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#endif /* !INTEGER_ONLY */
|
|
|
|
#ifdef _UNBUF_STREAM_OPT
|
|
/*
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|
* Helper function for `fprintf to unbuffered unix file': creates a
|
|
* temporary buffer. We only work on write-only files; this avoids
|
|
* worries about ungetc buffers and so forth.
|
|
*
|
|
* Make sure to avoid inlining.
|
|
*/
|
|
_NOINLINE_STATIC int
|
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__sbprintf (struct _reent *rptr,
|
|
register FILE *fp,
|
|
const char *fmt,
|
|
va_list ap)
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|
{
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|
int ret;
|
|
FILE fake;
|
|
unsigned char buf[BUFSIZ];
|
|
|
|
/* copy the important variables */
|
|
fake._flags = fp->_flags & ~__SNBF;
|
|
fake._flags2 = fp->_flags2;
|
|
fake._file = fp->_file;
|
|
fake._cookie = fp->_cookie;
|
|
fake._write = fp->_write;
|
|
|
|
/* set up the buffer */
|
|
fake._bf._base = fake._p = buf;
|
|
fake._bf._size = fake._w = sizeof (buf);
|
|
fake._lbfsize = 0; /* not actually used, but Just In Case */
|
|
#ifndef __SINGLE_THREAD__
|
|
__lock_init_recursive (fake._lock);
|
|
#endif
|
|
|
|
/* do the work, then copy any error status */
|
|
ret = _VFPRINTF_R (rptr, &fake, fmt, ap);
|
|
if (ret >= 0 && _fflush_r (rptr, &fake))
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ret = EOF;
|
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if (fake._flags & __SERR)
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fp->_flags |= __SERR;
|
|
|
|
#ifndef __SINGLE_THREAD__
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|
__lock_close_recursive (fake._lock);
|
|
#endif
|
|
return (ret);
|
|
}
|
|
#endif /* _UNBUF_STREAM_OPT */
|
|
#endif /* !STRING_ONLY */
|
|
|
|
|
|
#if defined (FLOATING_POINT) || defined (_WANT_IO_C99_FORMATS)
|
|
# include <locale.h>
|
|
#endif
|
|
#ifdef FLOATING_POINT
|
|
# include <math.h>
|
|
|
|
/* For %La, an exponent of 15 bits occupies the exponent character, a
|
|
sign, and up to 5 digits. */
|
|
# define MAXEXPLEN 7
|
|
# define DEFPREC 6
|
|
|
|
# ifdef _NO_LONGDBL
|
|
|
|
extern char *_dtoa_r (struct _reent *, double, int,
|
|
int, int *, int *, char **);
|
|
|
|
# define _PRINTF_FLOAT_TYPE double
|
|
# define _DTOA_R _dtoa_r
|
|
# define FREXP frexp
|
|
|
|
# else /* !_NO_LONGDBL */
|
|
|
|
extern char *_ldtoa_r (struct _reent *, _LONG_DOUBLE, int,
|
|
int, int *, int *, char **);
|
|
|
|
extern int _ldcheck (_LONG_DOUBLE *);
|
|
|
|
# define _PRINTF_FLOAT_TYPE _LONG_DOUBLE
|
|
# define _DTOA_R _ldtoa_r
|
|
/* FIXME - frexpl is not yet supported; and cvt infloops if (double)f
|
|
converts a finite value into infinity. */
|
|
/* # define FREXP frexpl */
|
|
# define FREXP(f,e) ((_LONG_DOUBLE) frexp ((double)f, e))
|
|
# endif /* !_NO_LONGDBL */
|
|
|
|
static char *cvt(struct _reent *, _PRINTF_FLOAT_TYPE, int, int, char *, int *,
|
|
int, int *, char *);
|
|
|
|
static int exponent(char *, int, int);
|
|
|
|
#endif /* FLOATING_POINT */
|
|
|
|
/* BUF must be big enough for the maximum %#llo (assuming long long is
|
|
at most 64 bits, this would be 23 characters), the maximum
|
|
multibyte character %C, and the maximum default precision of %La
|
|
(assuming long double is at most 128 bits with 113 bits of
|
|
mantissa, this would be 29 characters). %e, %f, and %g use
|
|
reentrant storage shared with mprec. All other formats that use
|
|
buf get by with fewer characters. Making BUF slightly bigger
|
|
reduces the need for malloc in %.*a and %S, when large precision or
|
|
long strings are processed.
|
|
The bigger size of 100 bytes is used on systems which allow number
|
|
strings using the locale's grouping character. Since that's a multibyte
|
|
value, we should use a conservative value.
|
|
*/
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
#define BUF 100
|
|
#else
|
|
#define BUF 40
|
|
#endif
|
|
#if defined _MB_CAPABLE && MB_LEN_MAX > BUF
|
|
# undef BUF
|
|
# define BUF MB_LEN_MAX
|
|
#endif
|
|
|
|
#ifndef _NO_LONGLONG
|
|
# define quad_t long long
|
|
# define u_quad_t unsigned long long
|
|
#else
|
|
# define quad_t long
|
|
# define u_quad_t unsigned long
|
|
#endif
|
|
|
|
typedef quad_t * quad_ptr_t;
|
|
typedef void *void_ptr_t;
|
|
typedef char * char_ptr_t;
|
|
typedef long * long_ptr_t;
|
|
typedef int * int_ptr_t;
|
|
typedef short * short_ptr_t;
|
|
|
|
#ifndef _NO_POS_ARGS
|
|
# ifdef NL_ARGMAX
|
|
# define MAX_POS_ARGS NL_ARGMAX
|
|
# else
|
|
# define MAX_POS_ARGS 32
|
|
# endif
|
|
|
|
union arg_val
|
|
{
|
|
int val_int;
|
|
u_int val_u_int;
|
|
long val_long;
|
|
u_long val_u_long;
|
|
float val_float;
|
|
double val_double;
|
|
_LONG_DOUBLE val__LONG_DOUBLE;
|
|
int_ptr_t val_int_ptr_t;
|
|
short_ptr_t val_short_ptr_t;
|
|
long_ptr_t val_long_ptr_t;
|
|
char_ptr_t val_char_ptr_t;
|
|
quad_ptr_t val_quad_ptr_t;
|
|
void_ptr_t val_void_ptr_t;
|
|
quad_t val_quad_t;
|
|
u_quad_t val_u_quad_t;
|
|
wint_t val_wint_t;
|
|
};
|
|
|
|
static union arg_val *
|
|
get_arg (struct _reent *data, int n, char *fmt,
|
|
va_list *ap, int *numargs, union arg_val *args,
|
|
int *arg_type, char **last_fmt);
|
|
#endif /* !_NO_POS_ARGS */
|
|
|
|
/*
|
|
* Macros for converting digits to letters and vice versa
|
|
*/
|
|
#define to_digit(c) ((c) - '0')
|
|
#define is_digit(c) ((unsigned)to_digit (c) <= 9)
|
|
#define to_char(n) ((n) + '0')
|
|
|
|
/*
|
|
* Flags used during conversion.
|
|
*/
|
|
#define ALT 0x001 /* alternate form */
|
|
#define HEXPREFIX 0x002 /* add 0x or 0X prefix */
|
|
#define LADJUST 0x004 /* left adjustment */
|
|
#define LONGDBL 0x008 /* long double */
|
|
#define LONGINT 0x010 /* long integer */
|
|
#ifndef _NO_LONGLONG
|
|
# define QUADINT 0x020 /* quad integer */
|
|
#else /* ifdef _NO_LONGLONG, make QUADINT equivalent to LONGINT, so
|
|
that %lld behaves the same as %ld, not as %d, as expected if:
|
|
sizeof (long long) = sizeof long > sizeof int */
|
|
# define QUADINT LONGINT
|
|
#endif
|
|
#define SHORTINT 0x040 /* short integer */
|
|
#define ZEROPAD 0x080 /* zero (as opposed to blank) pad */
|
|
#define FPT 0x100 /* Floating point number */
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
# define CHARINT 0x200 /* char as integer */
|
|
#else /* define as 0, to make SARG and UARG occupy fewer instructions */
|
|
# define CHARINT 0
|
|
#endif
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
# define GROUPING 0x400 /* use grouping ("'" flag) */
|
|
#endif
|
|
|
|
int _VFPRINTF_R (struct _reent *, FILE *, const char *, va_list);
|
|
|
|
#ifndef STRING_ONLY
|
|
int
|
|
VFPRINTF (FILE * fp,
|
|
const char *fmt0,
|
|
va_list ap)
|
|
{
|
|
int result;
|
|
result = _VFPRINTF_R (_REENT, fp, fmt0, ap);
|
|
return result;
|
|
}
|
|
#endif /* STRING_ONLY */
|
|
|
|
int
|
|
_VFPRINTF_R (struct _reent *data,
|
|
FILE * fp,
|
|
const char *fmt0,
|
|
va_list ap)
|
|
{
|
|
register char *fmt; /* format string */
|
|
register int ch; /* character from fmt */
|
|
register int n, m; /* handy integers (short term usage) */
|
|
register char *cp; /* handy char pointer (short term usage) */
|
|
register int flags; /* flags as above */
|
|
char *fmt_anchor; /* current format spec being processed */
|
|
#ifndef _NO_POS_ARGS
|
|
int N; /* arg number */
|
|
int arg_index; /* index into args processed directly */
|
|
int numargs; /* number of varargs read */
|
|
char *saved_fmt; /* saved fmt pointer */
|
|
union arg_val args[MAX_POS_ARGS];
|
|
int arg_type[MAX_POS_ARGS];
|
|
int is_pos_arg; /* is current format positional? */
|
|
int old_is_pos_arg; /* is current format positional? */
|
|
#endif
|
|
int ret; /* return value accumulator */
|
|
int width; /* width from format (%8d), or 0 */
|
|
int prec; /* precision from format (%.3d), or -1 */
|
|
char sign; /* sign prefix (' ', '+', '-', or \0) */
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
/* locale specific numeric grouping */
|
|
char *thousands_sep = NULL;
|
|
size_t thsnd_len = 0;
|
|
const char *grouping = NULL;
|
|
#endif
|
|
#ifdef FLOATING_POINT
|
|
char *decimal_point = _localeconv_r (data)->decimal_point;
|
|
size_t decp_len = strlen (decimal_point);
|
|
char softsign; /* temporary negative sign for floats */
|
|
union { int i; _PRINTF_FLOAT_TYPE fp; } _double_ = {0};
|
|
# define _fpvalue (_double_.fp)
|
|
int expt; /* integer value of exponent */
|
|
int expsize = 0; /* character count for expstr */
|
|
char expstr[MAXEXPLEN]; /* buffer for exponent string */
|
|
int lead; /* sig figs before decimal or group sep */
|
|
#endif /* FLOATING_POINT */
|
|
#if defined (FLOATING_POINT) || defined (_WANT_IO_C99_FORMATS)
|
|
int ndig = 0; /* actual number of digits returned by cvt */
|
|
#endif
|
|
#if defined (FLOATING_POINT) && defined (_WANT_IO_C99_FORMATS)
|
|
int nseps; /* number of group separators with ' */
|
|
int nrepeats; /* number of repeats of the last group */
|
|
#endif
|
|
u_quad_t _uquad; /* integer arguments %[diouxX] */
|
|
enum { OCT, DEC, HEX } base;/* base for [diouxX] conversion */
|
|
int dprec; /* a copy of prec if [diouxX], 0 otherwise */
|
|
int realsz; /* field size expanded by dprec */
|
|
int size; /* size of converted field or string */
|
|
char *xdigs = NULL; /* digits for [xX] conversion */
|
|
#ifdef _FVWRITE_IN_STREAMIO
|
|
#define NIOV 8
|
|
struct __suio uio; /* output information: summary */
|
|
struct __siov iov[NIOV];/* ... and individual io vectors */
|
|
register struct __siov *iovp;/* for PRINT macro */
|
|
#endif
|
|
char buf[BUF]; /* space for %c, %S, %[diouxX], %[aA] */
|
|
char ox[2]; /* space for 0x hex-prefix */
|
|
#ifdef _MB_CAPABLE
|
|
wchar_t wc;
|
|
mbstate_t state; /* mbtowc calls from library must not change state */
|
|
#endif
|
|
char *malloc_buf = NULL;/* handy pointer for malloced buffers */
|
|
|
|
/*
|
|
* Choose PADSIZE to trade efficiency vs. size. If larger printf
|
|
* fields occur frequently, increase PADSIZE and make the initialisers
|
|
* below longer.
|
|
*/
|
|
#define PADSIZE 16 /* pad chunk size */
|
|
static const char blanks[PADSIZE] =
|
|
{' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
|
|
static const char zeroes[PADSIZE] =
|
|
{'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
|
|
|
|
#ifdef _MB_CAPABLE
|
|
memset (&state, '\0', sizeof (state));
|
|
#endif
|
|
/*
|
|
* BEWARE, these `goto error' on error, and PAD uses `n'.
|
|
*/
|
|
#ifdef _FVWRITE_IN_STREAMIO
|
|
#define PRINT(ptr, len) { \
|
|
iovp->iov_base = (ptr); \
|
|
iovp->iov_len = (len); \
|
|
uio.uio_resid += (len); \
|
|
iovp++; \
|
|
if (++uio.uio_iovcnt >= NIOV) { \
|
|
if (__SPRINT(data, fp, &uio)) \
|
|
goto error; \
|
|
iovp = iov; \
|
|
} \
|
|
}
|
|
#define PAD(howmany, with) { \
|
|
if ((n = (howmany)) > 0) { \
|
|
while (n > PADSIZE) { \
|
|
PRINT (with, PADSIZE); \
|
|
n -= PADSIZE; \
|
|
} \
|
|
PRINT (with, n); \
|
|
} \
|
|
}
|
|
#define PRINTANDPAD(p, ep, len, with) { \
|
|
int n = (ep) - (p); \
|
|
if (n > (len)) \
|
|
n = (len); \
|
|
if (n > 0) \
|
|
PRINT((p), n); \
|
|
PAD((len) - (n > 0 ? n : 0), (with)); \
|
|
}
|
|
#define FLUSH() { \
|
|
if (uio.uio_resid && __SPRINT(data, fp, &uio)) \
|
|
goto error; \
|
|
uio.uio_iovcnt = 0; \
|
|
iovp = iov; \
|
|
}
|
|
#else
|
|
#define PRINT(ptr, len) { \
|
|
if (__SPRINT (data, fp, (ptr), (len)) == EOF) \
|
|
goto error; \
|
|
}
|
|
#define PAD(howmany, with) { \
|
|
if ((n = (howmany)) > 0) { \
|
|
while (n > PADSIZE) { \
|
|
PRINT (with, PADSIZE); \
|
|
n -= PADSIZE; \
|
|
} \
|
|
PRINT (with, n); \
|
|
} \
|
|
}
|
|
#define PRINTANDPAD(p, ep, len, with) { \
|
|
int n = (ep) - (p); \
|
|
if (n > (len)) \
|
|
n = (len); \
|
|
if (n > 0) \
|
|
PRINT((p), n); \
|
|
PAD((len) - (n > 0 ? n : 0), (with)); \
|
|
}
|
|
#define FLUSH()
|
|
#endif
|
|
|
|
/* Macros to support positional arguments */
|
|
#ifndef _NO_POS_ARGS
|
|
# define GET_ARG(n, ap, type) \
|
|
(is_pos_arg \
|
|
? (n < numargs \
|
|
? args[n].val_##type \
|
|
: get_arg (data, n, fmt_anchor, &ap, &numargs, args, \
|
|
arg_type, &saved_fmt)->val_##type) \
|
|
: (arg_index++ < numargs \
|
|
? args[n].val_##type \
|
|
: (numargs < MAX_POS_ARGS \
|
|
? args[numargs++].val_##type = va_arg (ap, type) \
|
|
: va_arg (ap, type))))
|
|
#else
|
|
# define GET_ARG(n, ap, type) (va_arg (ap, type))
|
|
#endif
|
|
|
|
/*
|
|
* To extend shorts properly, we need both signed and unsigned
|
|
* argument extraction methods.
|
|
*/
|
|
#ifndef _NO_LONGLONG
|
|
#define SARG() \
|
|
(flags&QUADINT ? GET_ARG (N, ap, quad_t) : \
|
|
flags&LONGINT ? GET_ARG (N, ap, long) : \
|
|
flags&SHORTINT ? (long)(short)GET_ARG (N, ap, int) : \
|
|
flags&CHARINT ? (long)(signed char)GET_ARG (N, ap, int) : \
|
|
(long)GET_ARG (N, ap, int))
|
|
#define UARG() \
|
|
(flags&QUADINT ? GET_ARG (N, ap, u_quad_t) : \
|
|
flags&LONGINT ? GET_ARG (N, ap, u_long) : \
|
|
flags&SHORTINT ? (u_long)(u_short)GET_ARG (N, ap, int) : \
|
|
flags&CHARINT ? (u_long)(unsigned char)GET_ARG (N, ap, int) : \
|
|
(u_long)GET_ARG (N, ap, u_int))
|
|
#else
|
|
#define SARG() \
|
|
(flags&LONGINT ? GET_ARG (N, ap, long) : \
|
|
flags&SHORTINT ? (long)(short)GET_ARG (N, ap, int) : \
|
|
flags&CHARINT ? (long)(signed char)GET_ARG (N, ap, int) : \
|
|
(long)GET_ARG (N, ap, int))
|
|
#define UARG() \
|
|
(flags&LONGINT ? GET_ARG (N, ap, u_long) : \
|
|
flags&SHORTINT ? (u_long)(u_short)GET_ARG (N, ap, int) : \
|
|
flags&CHARINT ? (u_long)(unsigned char)GET_ARG (N, ap, int) : \
|
|
(u_long)GET_ARG (N, ap, u_int))
|
|
#endif
|
|
|
|
#ifndef STRING_ONLY
|
|
/* Initialize std streams if not dealing with sprintf family. */
|
|
CHECK_INIT (data, fp);
|
|
_newlib_flockfile_start (fp);
|
|
|
|
ORIENT(fp, -1);
|
|
|
|
/* sorry, fprintf(read_only_file, "") returns EOF, not 0 */
|
|
if (cantwrite (data, fp)) {
|
|
_newlib_flockfile_exit (fp);
|
|
return (EOF);
|
|
}
|
|
|
|
#ifdef _UNBUF_STREAM_OPT
|
|
/* optimise fprintf(stderr) (and other unbuffered Unix files) */
|
|
if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) &&
|
|
fp->_file >= 0) {
|
|
_newlib_flockfile_exit (fp);
|
|
return (__sbprintf (data, fp, fmt0, ap));
|
|
}
|
|
#endif
|
|
#else /* STRING_ONLY */
|
|
/* Create initial buffer if we are called by asprintf family. */
|
|
if (fp->_flags & __SMBF && !fp->_bf._base)
|
|
{
|
|
fp->_bf._base = fp->_p = _malloc_r (data, 64);
|
|
if (!fp->_p)
|
|
{
|
|
data->_errno = ENOMEM;
|
|
return EOF;
|
|
}
|
|
fp->_bf._size = 64;
|
|
}
|
|
#endif /* STRING_ONLY */
|
|
|
|
fmt = (char *)fmt0;
|
|
#ifdef _FVWRITE_IN_STREAMIO
|
|
uio.uio_iov = iovp = iov;
|
|
uio.uio_resid = 0;
|
|
uio.uio_iovcnt = 0;
|
|
#endif
|
|
ret = 0;
|
|
#ifndef _NO_POS_ARGS
|
|
arg_index = 0;
|
|
saved_fmt = NULL;
|
|
arg_type[0] = -1;
|
|
numargs = 0;
|
|
is_pos_arg = 0;
|
|
#endif
|
|
|
|
/*
|
|
* Scan the format for conversions (`%' character).
|
|
*/
|
|
for (;;) {
|
|
cp = fmt;
|
|
#ifdef _MB_CAPABLE
|
|
while ((n = __MBTOWC (data, &wc, fmt, MB_CUR_MAX,
|
|
&state)) != 0) {
|
|
if (n < 0) {
|
|
/* Wave invalid chars through. */
|
|
memset (&state, 0, sizeof state);
|
|
n = 1;
|
|
}
|
|
else if (wc == '%')
|
|
break;
|
|
fmt += n;
|
|
}
|
|
#else
|
|
while (*fmt != '\0' && *fmt != '%')
|
|
fmt += 1;
|
|
#endif
|
|
if ((m = fmt - cp) != 0) {
|
|
PRINT (cp, m);
|
|
ret += m;
|
|
}
|
|
#ifdef _MB_CAPABLE
|
|
if (n <= 0)
|
|
goto done;
|
|
#else
|
|
if (*fmt == '\0')
|
|
goto done;
|
|
#endif
|
|
fmt_anchor = fmt;
|
|
fmt++; /* skip over '%' */
|
|
|
|
flags = 0;
|
|
dprec = 0;
|
|
width = 0;
|
|
prec = -1;
|
|
sign = '\0';
|
|
#ifdef FLOATING_POINT
|
|
lead = 0;
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
nseps = nrepeats = 0;
|
|
#endif
|
|
#endif
|
|
#ifndef _NO_POS_ARGS
|
|
N = arg_index;
|
|
is_pos_arg = 0;
|
|
#endif
|
|
|
|
rflag: ch = *fmt++;
|
|
reswitch: switch (ch) {
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
case '\'':
|
|
thousands_sep = _localeconv_r (data)->thousands_sep;
|
|
thsnd_len = strlen (thousands_sep);
|
|
grouping = _localeconv_r (data)->grouping;
|
|
if (thsnd_len > 0 && grouping && *grouping)
|
|
flags |= GROUPING;
|
|
goto rflag;
|
|
#endif
|
|
case ' ':
|
|
/*
|
|
* ``If the space and + flags both appear, the space
|
|
* flag will be ignored.''
|
|
* -- ANSI X3J11
|
|
*/
|
|
if (!sign)
|
|
sign = ' ';
|
|
goto rflag;
|
|
case '#':
|
|
flags |= ALT;
|
|
goto rflag;
|
|
case '*':
|
|
#ifndef _NO_POS_ARGS
|
|
/* we must check for positional arg used for dynamic width */
|
|
n = N;
|
|
old_is_pos_arg = is_pos_arg;
|
|
is_pos_arg = 0;
|
|
if (is_digit (*fmt)) {
|
|
char *old_fmt = fmt;
|
|
|
|
n = 0;
|
|
ch = *fmt++;
|
|
do {
|
|
n = 10 * n + to_digit (ch);
|
|
ch = *fmt++;
|
|
} while (is_digit (ch));
|
|
|
|
if (ch == '$') {
|
|
if (n <= MAX_POS_ARGS) {
|
|
n -= 1;
|
|
is_pos_arg = 1;
|
|
}
|
|
else
|
|
goto error;
|
|
}
|
|
else {
|
|
fmt = old_fmt;
|
|
goto rflag;
|
|
}
|
|
}
|
|
#endif /* !_NO_POS_ARGS */
|
|
|
|
/*
|
|
* ``A negative field width argument is taken as a
|
|
* - flag followed by a positive field width.''
|
|
* -- ANSI X3J11
|
|
* They don't exclude field widths read from args.
|
|
*/
|
|
width = GET_ARG (n, ap, int);
|
|
#ifndef _NO_POS_ARGS
|
|
is_pos_arg = old_is_pos_arg;
|
|
#endif
|
|
if (width >= 0)
|
|
goto rflag;
|
|
width = -width;
|
|
/* FALLTHROUGH */
|
|
case '-':
|
|
flags |= LADJUST;
|
|
goto rflag;
|
|
case '+':
|
|
sign = '+';
|
|
goto rflag;
|
|
case '.':
|
|
if ((ch = *fmt++) == '*') {
|
|
#ifndef _NO_POS_ARGS
|
|
/* we must check for positional arg used for dynamic width */
|
|
n = N;
|
|
old_is_pos_arg = is_pos_arg;
|
|
is_pos_arg = 0;
|
|
if (is_digit (*fmt)) {
|
|
char *old_fmt = fmt;
|
|
|
|
n = 0;
|
|
ch = *fmt++;
|
|
do {
|
|
n = 10 * n + to_digit (ch);
|
|
ch = *fmt++;
|
|
} while (is_digit (ch));
|
|
|
|
if (ch == '$') {
|
|
if (n <= MAX_POS_ARGS) {
|
|
n -= 1;
|
|
is_pos_arg = 1;
|
|
}
|
|
else
|
|
goto error;
|
|
}
|
|
else {
|
|
fmt = old_fmt;
|
|
goto rflag;
|
|
}
|
|
}
|
|
#endif /* !_NO_POS_ARGS */
|
|
prec = GET_ARG (n, ap, int);
|
|
#ifndef _NO_POS_ARGS
|
|
is_pos_arg = old_is_pos_arg;
|
|
#endif
|
|
if (prec < 0)
|
|
prec = -1;
|
|
goto rflag;
|
|
}
|
|
n = 0;
|
|
while (is_digit (ch)) {
|
|
n = 10 * n + to_digit (ch);
|
|
ch = *fmt++;
|
|
}
|
|
prec = n < 0 ? -1 : n;
|
|
goto reswitch;
|
|
case '0':
|
|
/*
|
|
* ``Note that 0 is taken as a flag, not as the
|
|
* beginning of a field width.''
|
|
* -- ANSI X3J11
|
|
*/
|
|
flags |= ZEROPAD;
|
|
goto rflag;
|
|
case '1': case '2': case '3': case '4':
|
|
case '5': case '6': case '7': case '8': case '9':
|
|
n = 0;
|
|
do {
|
|
n = 10 * n + to_digit (ch);
|
|
ch = *fmt++;
|
|
} while (is_digit (ch));
|
|
#ifndef _NO_POS_ARGS
|
|
if (ch == '$') {
|
|
if (n <= MAX_POS_ARGS) {
|
|
N = n - 1;
|
|
is_pos_arg = 1;
|
|
goto rflag;
|
|
}
|
|
else
|
|
goto error;
|
|
}
|
|
#endif /* !_NO_POS_ARGS */
|
|
width = n;
|
|
goto reswitch;
|
|
#ifdef FLOATING_POINT
|
|
case 'L':
|
|
flags |= LONGDBL;
|
|
goto rflag;
|
|
#endif
|
|
case 'h':
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
if (*fmt == 'h') {
|
|
fmt++;
|
|
flags |= CHARINT;
|
|
} else
|
|
#endif
|
|
flags |= SHORTINT;
|
|
goto rflag;
|
|
case 'l':
|
|
#if defined _WANT_IO_C99_FORMATS || !defined _NO_LONGLONG
|
|
if (*fmt == 'l') {
|
|
fmt++;
|
|
flags |= QUADINT;
|
|
} else
|
|
#endif
|
|
flags |= LONGINT;
|
|
goto rflag;
|
|
case 'q': /* extension */
|
|
flags |= QUADINT;
|
|
goto rflag;
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
case 'j':
|
|
if (sizeof (intmax_t) == sizeof (long))
|
|
flags |= LONGINT;
|
|
else
|
|
flags |= QUADINT;
|
|
goto rflag;
|
|
case 'z':
|
|
if (sizeof (size_t) < sizeof (int))
|
|
/* POSIX states size_t is 16 or more bits, as is short. */
|
|
flags |= SHORTINT;
|
|
else if (sizeof (size_t) == sizeof (int))
|
|
/* no flag needed */;
|
|
else if (sizeof (size_t) <= sizeof (long))
|
|
flags |= LONGINT;
|
|
else
|
|
/* POSIX states that at least one programming
|
|
environment must support size_t no wider than
|
|
long, but that means other environments can
|
|
have size_t as wide as long long. */
|
|
flags |= QUADINT;
|
|
goto rflag;
|
|
case 't':
|
|
if (sizeof (ptrdiff_t) < sizeof (int))
|
|
/* POSIX states ptrdiff_t is 16 or more bits, as
|
|
is short. */
|
|
flags |= SHORTINT;
|
|
else if (sizeof (ptrdiff_t) == sizeof (int))
|
|
/* no flag needed */;
|
|
else if (sizeof (ptrdiff_t) <= sizeof (long))
|
|
flags |= LONGINT;
|
|
else
|
|
/* POSIX states that at least one programming
|
|
environment must support ptrdiff_t no wider than
|
|
long, but that means other environments can
|
|
have ptrdiff_t as wide as long long. */
|
|
flags |= QUADINT;
|
|
goto rflag;
|
|
case 'C':
|
|
#endif /* _WANT_IO_C99_FORMATS */
|
|
case 'c':
|
|
cp = buf;
|
|
#ifdef _MB_CAPABLE
|
|
if (ch == 'C' || (flags & LONGINT)) {
|
|
mbstate_t ps;
|
|
|
|
memset ((void *)&ps, '\0', sizeof (mbstate_t));
|
|
if ((size = (int)_wcrtomb_r (data, cp,
|
|
(wchar_t)GET_ARG (N, ap, wint_t),
|
|
&ps)) == -1) {
|
|
fp->_flags |= __SERR;
|
|
goto error;
|
|
}
|
|
}
|
|
else
|
|
#endif /* _MB_CAPABLE */
|
|
{
|
|
*cp = GET_ARG (N, ap, int);
|
|
size = 1;
|
|
}
|
|
sign = '\0';
|
|
break;
|
|
case 'D': /* extension */
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'd':
|
|
case 'i':
|
|
_uquad = SARG ();
|
|
#ifndef _NO_LONGLONG
|
|
if ((quad_t)_uquad < 0)
|
|
#else
|
|
if ((long) _uquad < 0)
|
|
#endif
|
|
{
|
|
|
|
_uquad = -_uquad;
|
|
sign = '-';
|
|
}
|
|
base = DEC;
|
|
goto number;
|
|
#ifdef FLOATING_POINT
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
case 'a':
|
|
case 'A':
|
|
case 'F':
|
|
# endif
|
|
case 'e':
|
|
case 'E':
|
|
case 'f':
|
|
case 'g':
|
|
case 'G':
|
|
# ifdef _NO_LONGDBL
|
|
if (flags & LONGDBL) {
|
|
_fpvalue = (double) GET_ARG (N, ap, _LONG_DOUBLE);
|
|
} else {
|
|
_fpvalue = GET_ARG (N, ap, double);
|
|
}
|
|
|
|
/* do this before tricky precision changes
|
|
|
|
If the output is infinite or NaN, leading
|
|
zeros are not permitted. Otherwise, scanf
|
|
could not read what printf wrote.
|
|
*/
|
|
if (isinf (_fpvalue)) {
|
|
if (_fpvalue < 0)
|
|
sign = '-';
|
|
if (ch <= 'G') /* 'A', 'E', 'F', or 'G' */
|
|
cp = "INF";
|
|
else
|
|
cp = "inf";
|
|
size = 3;
|
|
flags &= ~ZEROPAD;
|
|
break;
|
|
}
|
|
if (isnan (_fpvalue)) {
|
|
if (signbit (_fpvalue))
|
|
sign = '-';
|
|
if (ch <= 'G') /* 'A', 'E', 'F', or 'G' */
|
|
cp = "NAN";
|
|
else
|
|
cp = "nan";
|
|
size = 3;
|
|
flags &= ~ZEROPAD;
|
|
break;
|
|
}
|
|
|
|
# else /* !_NO_LONGDBL */
|
|
|
|
if (flags & LONGDBL) {
|
|
_fpvalue = GET_ARG (N, ap, _LONG_DOUBLE);
|
|
} else {
|
|
_fpvalue = (_LONG_DOUBLE)GET_ARG (N, ap, double);
|
|
}
|
|
|
|
/* do this before tricky precision changes */
|
|
expt = _ldcheck (&_fpvalue);
|
|
if (expt == 2) {
|
|
if (_fpvalue < 0)
|
|
sign = '-';
|
|
if (ch <= 'G') /* 'A', 'E', 'F', or 'G' */
|
|
cp = "INF";
|
|
else
|
|
cp = "inf";
|
|
size = 3;
|
|
flags &= ~ZEROPAD;
|
|
break;
|
|
}
|
|
if (expt == 1) {
|
|
if (signbit (_fpvalue))
|
|
sign = '-';
|
|
if (ch <= 'G') /* 'A', 'E', 'F', or 'G' */
|
|
cp = "NAN";
|
|
else
|
|
cp = "nan";
|
|
size = 3;
|
|
flags &= ~ZEROPAD;
|
|
break;
|
|
}
|
|
# endif /* !_NO_LONGDBL */
|
|
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
if (ch == 'a' || ch == 'A') {
|
|
ox[0] = '0';
|
|
ox[1] = ch == 'a' ? 'x' : 'X';
|
|
flags |= HEXPREFIX;
|
|
if (prec >= BUF)
|
|
{
|
|
if ((malloc_buf =
|
|
(char *)_malloc_r (data, prec + 1))
|
|
== NULL)
|
|
{
|
|
fp->_flags |= __SERR;
|
|
goto error;
|
|
}
|
|
cp = malloc_buf;
|
|
}
|
|
else
|
|
cp = buf;
|
|
} else
|
|
# endif /* _WANT_IO_C99_FORMATS */
|
|
if (prec == -1) {
|
|
prec = DEFPREC;
|
|
} else if ((ch == 'g' || ch == 'G') && prec == 0) {
|
|
prec = 1;
|
|
}
|
|
|
|
flags |= FPT;
|
|
|
|
cp = cvt (data, _fpvalue, prec, flags, &softsign,
|
|
&expt, ch, &ndig, cp);
|
|
|
|
if (ch == 'g' || ch == 'G') {
|
|
if (expt <= -4 || expt > prec)
|
|
ch -= 2; /* 'e' or 'E' */
|
|
else
|
|
ch = 'g';
|
|
}
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
else if (ch == 'F')
|
|
ch = 'f';
|
|
# endif
|
|
if (ch <= 'e') { /* 'a', 'A', 'e', or 'E' fmt */
|
|
--expt;
|
|
expsize = exponent (expstr, expt, ch);
|
|
size = expsize + ndig;
|
|
if (ndig > 1 || flags & ALT)
|
|
size += decp_len;
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
flags &= ~GROUPING;
|
|
# endif
|
|
} else {
|
|
if (ch == 'f') { /* f fmt */
|
|
if (expt > 0) {
|
|
size = expt;
|
|
if (prec || flags & ALT)
|
|
size += prec + decp_len;
|
|
} else /* "0.X" */
|
|
size = (prec || flags & ALT)
|
|
? prec + 1 + decp_len
|
|
: 1;
|
|
} else if (expt >= ndig) { /* fixed g fmt */
|
|
size = expt;
|
|
if (flags & ALT)
|
|
size += decp_len;
|
|
} else {
|
|
size = ndig + decp_len;
|
|
if (expt <= 0)
|
|
size += 1 - expt;
|
|
}
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
if ((flags & GROUPING) && expt > 0) {
|
|
/* space for thousands' grouping */
|
|
nseps = nrepeats = 0;
|
|
lead = expt;
|
|
while (*grouping != CHAR_MAX) {
|
|
if (lead <= *grouping)
|
|
break;
|
|
lead -= *grouping;
|
|
if (grouping[1]) {
|
|
nseps++;
|
|
grouping++;
|
|
} else
|
|
nrepeats++;
|
|
}
|
|
size += (nseps + nrepeats) * thsnd_len;
|
|
} else
|
|
# endif
|
|
lead = expt;
|
|
}
|
|
|
|
if (softsign)
|
|
sign = '-';
|
|
break;
|
|
#endif /* FLOATING_POINT */
|
|
#ifdef _GLIBC_EXTENSION
|
|
case 'm': /* extension */
|
|
{
|
|
int dummy;
|
|
cp = _strerror_r (data, data->_errno, 1, &dummy);
|
|
}
|
|
flags &= ~LONGINT;
|
|
goto string;
|
|
#endif
|
|
case 'n':
|
|
#ifndef _NO_LONGLONG
|
|
if (flags & QUADINT)
|
|
*GET_ARG (N, ap, quad_ptr_t) = ret;
|
|
else
|
|
#endif
|
|
if (flags & LONGINT)
|
|
*GET_ARG (N, ap, long_ptr_t) = ret;
|
|
else if (flags & SHORTINT)
|
|
*GET_ARG (N, ap, short_ptr_t) = ret;
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
else if (flags & CHARINT)
|
|
*GET_ARG (N, ap, char_ptr_t) = ret;
|
|
#endif
|
|
else
|
|
*GET_ARG (N, ap, int_ptr_t) = ret;
|
|
continue; /* no output */
|
|
case 'O': /* extension */
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'o':
|
|
_uquad = UARG ();
|
|
base = OCT;
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
flags &= ~GROUPING;
|
|
#endif
|
|
goto nosign;
|
|
case 'p':
|
|
/*
|
|
* ``The argument shall be a pointer to void. The
|
|
* value of the pointer is converted to a sequence
|
|
* of printable characters, in an implementation-
|
|
* defined manner.''
|
|
* -- ANSI X3J11
|
|
*/
|
|
/* NOSTRICT */
|
|
_uquad = (uintptr_t) GET_ARG (N, ap, void_ptr_t);
|
|
base = HEX;
|
|
xdigs = "0123456789abcdef";
|
|
flags |= HEXPREFIX;
|
|
ox[0] = '0';
|
|
ox[1] = ch = 'x';
|
|
goto nosign;
|
|
case 's':
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
case 'S':
|
|
#endif
|
|
cp = GET_ARG (N, ap, char_ptr_t);
|
|
#ifdef _GLIBC_EXTENSION
|
|
string:
|
|
#endif
|
|
sign = '\0';
|
|
#ifndef __OPTIMIZE_SIZE__
|
|
/* Behavior is undefined if the user passed a
|
|
NULL string when precision is not 0.
|
|
However, if we are not optimizing for size,
|
|
we might as well mirror glibc behavior. */
|
|
if (cp == NULL) {
|
|
cp = "(null)";
|
|
size = ((unsigned) prec > 6U) ? 6 : prec;
|
|
}
|
|
else
|
|
#endif /* __OPTIMIZE_SIZE__ */
|
|
#ifdef _MB_CAPABLE
|
|
if (ch == 'S' || (flags & LONGINT)) {
|
|
mbstate_t ps;
|
|
const wchar_t *wcp;
|
|
|
|
wcp = (const wchar_t *)cp;
|
|
size = m = 0;
|
|
memset ((void *)&ps, '\0', sizeof (mbstate_t));
|
|
|
|
/* Count number of bytes needed for multibyte
|
|
string that will be produced from widechar
|
|
string. */
|
|
if (prec >= 0) {
|
|
while (1) {
|
|
if (wcp[m] == L'\0')
|
|
break;
|
|
if ((n = (int)_wcrtomb_r (data,
|
|
buf, wcp[m], &ps)) == -1) {
|
|
fp->_flags |= __SERR;
|
|
goto error;
|
|
}
|
|
if (n + size > prec)
|
|
break;
|
|
m += 1;
|
|
size += n;
|
|
if (size == prec)
|
|
break;
|
|
}
|
|
}
|
|
else {
|
|
if ((size = (int)_wcsrtombs_r (data,
|
|
NULL, &wcp, 0, &ps)) == -1) {
|
|
fp->_flags |= __SERR;
|
|
goto error;
|
|
}
|
|
wcp = (const wchar_t *)cp;
|
|
}
|
|
|
|
if (size == 0)
|
|
break;
|
|
|
|
if (size >= BUF) {
|
|
if ((malloc_buf =
|
|
(char *)_malloc_r (data, size + 1))
|
|
== NULL) {
|
|
fp->_flags |= __SERR;
|
|
goto error;
|
|
}
|
|
cp = malloc_buf;
|
|
} else
|
|
cp = buf;
|
|
|
|
/* Convert widechar string to multibyte string. */
|
|
memset ((void *)&ps, '\0', sizeof (mbstate_t));
|
|
if (_wcsrtombs_r (data, cp, &wcp, size, &ps)
|
|
!= size) {
|
|
fp->_flags |= __SERR;
|
|
goto error;
|
|
}
|
|
cp[size] = '\0';
|
|
}
|
|
else
|
|
#endif /* _MB_CAPABLE */
|
|
if (prec >= 0) {
|
|
/*
|
|
* can't use strlen; can only look for the
|
|
* NUL in the first `prec' characters, and
|
|
* strlen () will go further.
|
|
*/
|
|
char *p = memchr (cp, 0, prec);
|
|
|
|
if (p != NULL)
|
|
size = p - cp;
|
|
else
|
|
size = prec;
|
|
} else
|
|
size = strlen (cp);
|
|
|
|
break;
|
|
case 'U': /* extension */
|
|
flags |= LONGINT;
|
|
/*FALLTHROUGH*/
|
|
case 'u':
|
|
_uquad = UARG ();
|
|
base = DEC;
|
|
goto nosign;
|
|
case 'X':
|
|
xdigs = "0123456789ABCDEF";
|
|
goto hex;
|
|
case 'x':
|
|
xdigs = "0123456789abcdef";
|
|
hex: _uquad = UARG ();
|
|
base = HEX;
|
|
/* leading 0x/X only if non-zero */
|
|
if (flags & ALT && _uquad != 0) {
|
|
ox[0] = '0';
|
|
ox[1] = ch;
|
|
flags |= HEXPREFIX;
|
|
}
|
|
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
flags &= ~GROUPING;
|
|
#endif
|
|
/* unsigned conversions */
|
|
nosign: sign = '\0';
|
|
/*
|
|
* ``... diouXx conversions ... if a precision is
|
|
* specified, the 0 flag will be ignored.''
|
|
* -- ANSI X3J11
|
|
*/
|
|
number: if ((dprec = prec) >= 0)
|
|
flags &= ~ZEROPAD;
|
|
|
|
/*
|
|
* ``The result of converting a zero value with an
|
|
* explicit precision of zero is no characters.''
|
|
* -- ANSI X3J11
|
|
*/
|
|
cp = buf + BUF;
|
|
if (_uquad != 0 || prec != 0) {
|
|
/*
|
|
* Unsigned mod is hard, and unsigned mod
|
|
* by a constant is easier than that by
|
|
* a variable; hence this switch.
|
|
*/
|
|
switch (base) {
|
|
case OCT:
|
|
do {
|
|
*--cp = to_char (_uquad & 7);
|
|
_uquad >>= 3;
|
|
} while (_uquad);
|
|
/* handle octal leading 0 */
|
|
if (flags & ALT && *cp != '0')
|
|
*--cp = '0';
|
|
break;
|
|
|
|
case DEC:
|
|
/* many numbers are 1 digit */
|
|
if (_uquad < 10) {
|
|
*--cp = to_char(_uquad);
|
|
break;
|
|
}
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
ndig = 0;
|
|
#endif
|
|
do {
|
|
*--cp = to_char (_uquad % 10);
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
ndig++;
|
|
/* If (*grouping == CHAR_MAX) then no
|
|
more grouping */
|
|
if ((flags & GROUPING)
|
|
&& ndig == *grouping
|
|
&& *grouping != CHAR_MAX
|
|
&& _uquad > 9) {
|
|
cp -= thsnd_len;
|
|
strncpy (cp, thousands_sep,
|
|
thsnd_len);
|
|
ndig = 0;
|
|
/* If (grouping[1] == '\0') then we
|
|
have to use *grouping character
|
|
(last grouping rule) for all
|
|
next cases. */
|
|
if (grouping[1] != '\0')
|
|
grouping++;
|
|
}
|
|
#endif
|
|
_uquad /= 10;
|
|
} while (_uquad != 0);
|
|
break;
|
|
|
|
case HEX:
|
|
do {
|
|
*--cp = xdigs[_uquad & 15];
|
|
_uquad >>= 4;
|
|
} while (_uquad);
|
|
break;
|
|
|
|
default:
|
|
cp = "bug in vfprintf: bad base";
|
|
size = strlen (cp);
|
|
goto skipsize;
|
|
}
|
|
}
|
|
/*
|
|
* ...result is to be converted to an 'alternate form'.
|
|
* For o conversion, it increases the precision to force
|
|
* the first digit of the result to be a zero."
|
|
* -- ANSI X3J11
|
|
*
|
|
* To demonstrate this case, compile and run:
|
|
* printf ("%#.0o",0);
|
|
*/
|
|
else if (base == OCT && (flags & ALT))
|
|
*--cp = '0';
|
|
|
|
size = buf + BUF - cp;
|
|
skipsize:
|
|
break;
|
|
default: /* "%?" prints ?, unless ? is NUL */
|
|
if (ch == '\0')
|
|
goto done;
|
|
/* pretend it was %c with argument ch */
|
|
cp = buf;
|
|
*cp = ch;
|
|
size = 1;
|
|
sign = '\0';
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* All reasonable formats wind up here. At this point, `cp'
|
|
* points to a string which (if not flags&LADJUST) should be
|
|
* padded out to `width' places. If flags&ZEROPAD, it should
|
|
* first be prefixed by any sign or other prefix; otherwise,
|
|
* it should be blank padded before the prefix is emitted.
|
|
* After any left-hand padding and prefixing, emit zeroes
|
|
* required by a decimal [diouxX] precision, then print the
|
|
* string proper, then emit zeroes required by any leftover
|
|
* floating precision; finally, if LADJUST, pad with blanks.
|
|
* If flags&FPT, ch must be in [aAeEfg].
|
|
*
|
|
* Compute actual size, so we know how much to pad.
|
|
* size excludes decimal prec; realsz includes it.
|
|
*/
|
|
realsz = dprec > size ? dprec : size;
|
|
if (sign)
|
|
realsz++;
|
|
if (flags & HEXPREFIX)
|
|
realsz+= 2;
|
|
|
|
/* right-adjusting blank padding */
|
|
if ((flags & (LADJUST|ZEROPAD)) == 0)
|
|
PAD (width - realsz, blanks);
|
|
|
|
/* prefix */
|
|
if (sign)
|
|
PRINT (&sign, 1);
|
|
if (flags & HEXPREFIX)
|
|
PRINT (ox, 2);
|
|
|
|
/* right-adjusting zero padding */
|
|
if ((flags & (LADJUST|ZEROPAD)) == ZEROPAD)
|
|
PAD (width - realsz, zeroes);
|
|
|
|
/* leading zeroes from decimal precision */
|
|
PAD (dprec - size, zeroes);
|
|
|
|
/* the string or number proper */
|
|
#ifdef FLOATING_POINT
|
|
if ((flags & FPT) == 0) {
|
|
PRINT (cp, size);
|
|
} else { /* glue together f_p fragments */
|
|
if (ch >= 'f') { /* 'f' or 'g' */
|
|
if (_fpvalue == 0) {
|
|
/* kludge for __dtoa irregularity */
|
|
PRINT ("0", 1);
|
|
if (expt < ndig || flags & ALT) {
|
|
PRINT (decimal_point, decp_len);
|
|
PAD (ndig - 1, zeroes);
|
|
}
|
|
} else if (expt <= 0) {
|
|
PRINT ("0", 1);
|
|
if (expt || ndig || flags & ALT) {
|
|
PRINT (decimal_point, decp_len);
|
|
PAD (-expt, zeroes);
|
|
PRINT (cp, ndig);
|
|
}
|
|
} else {
|
|
char *convbuf = cp;
|
|
PRINTANDPAD(cp, convbuf + ndig,
|
|
lead, zeroes);
|
|
cp += lead;
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
if (flags & GROUPING) {
|
|
while (nseps > 0 || nrepeats > 0) {
|
|
if (nrepeats > 0)
|
|
nrepeats--;
|
|
else {
|
|
grouping--;
|
|
nseps--;
|
|
}
|
|
PRINT(thousands_sep, thsnd_len);
|
|
PRINTANDPAD (cp, convbuf + ndig,
|
|
*grouping, zeroes);
|
|
cp += *grouping;
|
|
}
|
|
if (cp > convbuf + ndig)
|
|
cp = convbuf + ndig;
|
|
}
|
|
#endif
|
|
if (expt < ndig || flags & ALT)
|
|
PRINT (decimal_point, decp_len);
|
|
PRINTANDPAD (cp, convbuf + ndig,
|
|
ndig - expt, zeroes);
|
|
}
|
|
} else { /* 'a', 'A', 'e', or 'E' */
|
|
if (ndig > 1 || flags & ALT) {
|
|
PRINT (cp, 1);
|
|
cp++;
|
|
PRINT (decimal_point, decp_len);
|
|
if (_fpvalue) {
|
|
PRINT (cp, ndig - 1);
|
|
} else /* 0.[0..] */
|
|
/* __dtoa irregularity */
|
|
PAD (ndig - 1, zeroes);
|
|
} else /* XeYYY */
|
|
PRINT (cp, 1);
|
|
PRINT (expstr, expsize);
|
|
}
|
|
}
|
|
#else /* !FLOATING_POINT */
|
|
PRINT (cp, size);
|
|
#endif
|
|
/* left-adjusting padding (always blank) */
|
|
if (flags & LADJUST)
|
|
PAD (width - realsz, blanks);
|
|
|
|
/* finally, adjust ret */
|
|
ret += width > realsz ? width : realsz;
|
|
|
|
FLUSH (); /* copy out the I/O vectors */
|
|
|
|
if (malloc_buf != NULL) {
|
|
_free_r (data, malloc_buf);
|
|
malloc_buf = NULL;
|
|
}
|
|
}
|
|
done:
|
|
FLUSH ();
|
|
error:
|
|
if (malloc_buf != NULL)
|
|
_free_r (data, malloc_buf);
|
|
#ifndef STRING_ONLY
|
|
_newlib_flockfile_end (fp);
|
|
#endif
|
|
return (__sferror (fp) ? EOF : ret);
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
#ifdef FLOATING_POINT
|
|
|
|
/* Using reentrant DATA, convert finite VALUE into a string of digits
|
|
with no decimal point, using NDIGITS precision and FLAGS as guides
|
|
to whether trailing zeros must be included. Set *SIGN to nonzero
|
|
if VALUE was negative. Set *DECPT to the exponent plus one. Set
|
|
*LENGTH to the length of the returned string. CH must be one of
|
|
[aAeEfFgG]; if it is [aA], then the return string lives in BUF,
|
|
otherwise the return value shares the mprec reentrant storage. */
|
|
static char *
|
|
cvt(struct _reent *data, _PRINTF_FLOAT_TYPE value, int ndigits, int flags,
|
|
char *sign, int *decpt, int ch, int *length, char *buf)
|
|
{
|
|
int mode, dsgn;
|
|
char *digits, *bp, *rve;
|
|
# ifdef _NO_LONGDBL
|
|
union double_union tmp;
|
|
|
|
tmp.d = value;
|
|
if (word0 (tmp) & Sign_bit) { /* this will check for < 0 and -0.0 */
|
|
value = -value;
|
|
*sign = '-';
|
|
} else
|
|
*sign = '\000';
|
|
# else /* !_NO_LONGDBL */
|
|
union
|
|
{
|
|
struct ldieee ieee;
|
|
_LONG_DOUBLE val;
|
|
} ld;
|
|
|
|
ld.val = value;
|
|
if (ld.ieee.sign) { /* this will check for < 0 and -0.0 */
|
|
value = -value;
|
|
*sign = '-';
|
|
} else
|
|
*sign = '\000';
|
|
# endif /* !_NO_LONGDBL */
|
|
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
if (ch == 'a' || ch == 'A') {
|
|
/* This code assumes FLT_RADIX is a power of 2. The initial
|
|
division ensures the digit before the decimal will be less
|
|
than FLT_RADIX (unless it is rounded later). There is no
|
|
loss of precision in these calculations. */
|
|
value = FREXP (value, decpt) / 8;
|
|
if (!value)
|
|
*decpt = 1;
|
|
digits = ch == 'a' ? "0123456789abcdef" : "0123456789ABCDEF";
|
|
bp = buf;
|
|
do {
|
|
value *= 16;
|
|
mode = (int) value;
|
|
value -= mode;
|
|
*bp++ = digits[mode];
|
|
} while (ndigits-- && value);
|
|
if (value > 0.5 || (value == 0.5 && mode & 1)) {
|
|
/* round to even */
|
|
rve = bp;
|
|
while (*--rve == digits[0xf]) {
|
|
*rve = '0';
|
|
}
|
|
*rve = *rve == '9' ? digits[0xa] : *rve + 1;
|
|
} else {
|
|
while (ndigits-- >= 0) {
|
|
*bp++ = '0';
|
|
}
|
|
}
|
|
*length = bp - buf;
|
|
return buf;
|
|
}
|
|
# endif /* _WANT_IO_C99_FORMATS */
|
|
if (ch == 'f' || ch == 'F') {
|
|
mode = 3; /* ndigits after the decimal point */
|
|
} else {
|
|
/* To obtain ndigits after the decimal point for the 'e'
|
|
* and 'E' formats, round to ndigits + 1 significant
|
|
* figures.
|
|
*/
|
|
if (ch == 'e' || ch == 'E') {
|
|
ndigits++;
|
|
}
|
|
mode = 2; /* ndigits significant digits */
|
|
}
|
|
|
|
digits = _DTOA_R (data, value, mode, ndigits, decpt, &dsgn, &rve);
|
|
|
|
if ((ch != 'g' && ch != 'G') || flags & ALT) { /* Print trailing zeros */
|
|
bp = digits + ndigits;
|
|
if (ch == 'f' || ch == 'F') {
|
|
if (*digits == '0' && value)
|
|
*decpt = -ndigits + 1;
|
|
bp += *decpt;
|
|
}
|
|
if (value == 0) /* kludge for __dtoa irregularity */
|
|
rve = bp;
|
|
while (rve < bp)
|
|
*rve++ = '0';
|
|
}
|
|
*length = rve - digits;
|
|
return (digits);
|
|
}
|
|
|
|
static int
|
|
exponent(char *p0, int exp, int fmtch)
|
|
{
|
|
register char *p, *t;
|
|
char expbuf[MAXEXPLEN];
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
int isa = fmtch == 'a' || fmtch == 'A';
|
|
# else
|
|
# define isa 0
|
|
# endif
|
|
|
|
p = p0;
|
|
*p++ = isa ? 'p' - 'a' + fmtch : fmtch;
|
|
if (exp < 0) {
|
|
exp = -exp;
|
|
*p++ = '-';
|
|
}
|
|
else
|
|
*p++ = '+';
|
|
t = expbuf + MAXEXPLEN;
|
|
if (exp > 9) {
|
|
do {
|
|
*--t = to_char (exp % 10);
|
|
} while ((exp /= 10) > 9);
|
|
*--t = to_char (exp);
|
|
for (; t < expbuf + MAXEXPLEN; *p++ = *t++);
|
|
}
|
|
else {
|
|
if (!isa)
|
|
*p++ = '0';
|
|
*p++ = to_char (exp);
|
|
}
|
|
return (p - p0);
|
|
}
|
|
#endif /* FLOATING_POINT */
|
|
|
|
|
|
#ifndef _NO_POS_ARGS
|
|
|
|
/* Positional argument support.
|
|
Written by Jeff Johnston
|
|
|
|
Copyright (c) 2002 Red Hat Incorporated.
|
|
All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
Redistributions of source code must retain the above copyright
|
|
notice, this list of conditions and the following disclaimer.
|
|
|
|
Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
|
|
The name of Red Hat Incorporated may not be used to endorse
|
|
or promote products derived from this software without specific
|
|
prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY
|
|
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
|
|
|
|
/* The below constant state tables are shared between all versions of
|
|
vfprintf and vfwprintf. They must only be defined once, which we do in
|
|
the STRING_ONLY/INTEGER_ONLY versions here. */
|
|
#if defined (STRING_ONLY) && defined(INTEGER_ONLY)
|
|
|
|
const __CH_CLASS __chclass[256] = {
|
|
/* 00-07 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* 08-0f */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* 10-17 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* 18-1f */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* 20-27 */ FLAG, OTHER, OTHER, FLAG, DOLLAR, OTHER, OTHER, FLAG,
|
|
/* 28-2f */ OTHER, OTHER, STAR, FLAG, OTHER, FLAG, DOT, OTHER,
|
|
/* 30-37 */ ZERO, DIGIT, DIGIT, DIGIT, DIGIT, DIGIT, DIGIT, DIGIT,
|
|
/* 38-3f */ DIGIT, DIGIT, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* 40-47 */ OTHER, SPEC, OTHER, SPEC, SPEC, SPEC, SPEC, SPEC,
|
|
/* 48-4f */ OTHER, OTHER, OTHER, OTHER, MODFR, OTHER, OTHER, SPEC,
|
|
/* 50-57 */ OTHER, OTHER, OTHER, SPEC, OTHER, SPEC, OTHER, OTHER,
|
|
/* 58-5f */ SPEC, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* 60-67 */ OTHER, SPEC, OTHER, SPEC, SPEC, SPEC, SPEC, SPEC,
|
|
/* 68-6f */ MODFR, SPEC, MODFR, OTHER, MODFR, OTHER, SPEC, SPEC,
|
|
/* 70-77 */ SPEC, MODFR, OTHER, SPEC, MODFR, SPEC, OTHER, OTHER,
|
|
/* 78-7f */ SPEC, OTHER, MODFR, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* 80-87 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* 88-8f */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* 90-97 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* 98-9f */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* a0-a7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* a8-af */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* b0-b7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* b8-bf */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* c0-c7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* c8-cf */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* d0-d7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* d8-df */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* e0-e7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* e8-ef */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* f0-f7 */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
/* f8-ff */ OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER, OTHER,
|
|
};
|
|
|
|
const __STATE __state_table[MAX_STATE][MAX_CH_CLASS] = {
|
|
/* '0' '1-9' '$' MODFR SPEC '.' '*' FLAG OTHER */
|
|
/* START */ { SFLAG, WDIG, DONE, SMOD, DONE, SDOT, VARW, SFLAG, DONE },
|
|
/* SFLAG */ { SFLAG, WDIG, DONE, SMOD, DONE, SDOT, VARW, SFLAG, DONE },
|
|
/* WDIG */ { DONE, DONE, WIDTH, SMOD, DONE, SDOT, DONE, DONE, DONE },
|
|
/* WIDTH */ { DONE, DONE, DONE, SMOD, DONE, SDOT, DONE, DONE, DONE },
|
|
/* SMOD */ { DONE, DONE, DONE, DONE, DONE, DONE, DONE, DONE, DONE },
|
|
/* SDOT */ { SDOT, PREC, DONE, SMOD, DONE, DONE, VARP, DONE, DONE },
|
|
/* VARW */ { DONE, VWDIG, DONE, SMOD, DONE, SDOT, DONE, DONE, DONE },
|
|
/* VARP */ { DONE, VPDIG, DONE, SMOD, DONE, DONE, DONE, DONE, DONE },
|
|
/* PREC */ { DONE, DONE, DONE, SMOD, DONE, DONE, DONE, DONE, DONE },
|
|
/* VWDIG */ { DONE, DONE, WIDTH, DONE, DONE, DONE, DONE, DONE, DONE },
|
|
/* VPDIG */ { DONE, DONE, PREC, DONE, DONE, DONE, DONE, DONE, DONE },
|
|
};
|
|
|
|
const __ACTION __action_table[MAX_STATE][MAX_CH_CLASS] = {
|
|
/* '0' '1-9' '$' MODFR SPEC '.' '*' FLAG OTHER */
|
|
/* START */ { NOOP, NUMBER, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP },
|
|
/* SFLAG */ { NOOP, NUMBER, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP },
|
|
/* WDIG */ { NOOP, NOOP, GETPOS, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP },
|
|
/* WIDTH */ { NOOP, NOOP, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP },
|
|
/* SMOD */ { NOOP, NOOP, NOOP, NOOP, GETARG, NOOP, NOOP, NOOP, NOOP },
|
|
/* SDOT */ { NOOP, SKIPNUM, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP },
|
|
/* VARW */ { NOOP, NUMBER, NOOP, GETPW, GETPWB, GETPW, NOOP, NOOP, NOOP },
|
|
/* VARP */ { NOOP, NUMBER, NOOP, GETPW, GETPWB, NOOP, NOOP, NOOP, NOOP },
|
|
/* PREC */ { NOOP, NOOP, NOOP, GETMOD, GETARG, NOOP, NOOP, NOOP, NOOP },
|
|
/* VWDIG */ { NOOP, NOOP, PWPOS, NOOP, NOOP, NOOP, NOOP, NOOP, NOOP },
|
|
/* VPDIG */ { NOOP, NOOP, PWPOS, NOOP, NOOP, NOOP, NOOP, NOOP, NOOP },
|
|
};
|
|
|
|
#endif /* STRING_ONLY && INTEGER_ONLY */
|
|
|
|
/* function to get positional parameter N where n = N - 1 */
|
|
static union arg_val *
|
|
get_arg (struct _reent *data,
|
|
int n,
|
|
char *fmt,
|
|
va_list *ap,
|
|
int *numargs_p,
|
|
union arg_val *args,
|
|
int *arg_type,
|
|
char **last_fmt)
|
|
{
|
|
int ch;
|
|
int number, flags;
|
|
int spec_type;
|
|
int numargs = *numargs_p;
|
|
__CH_CLASS chtype;
|
|
__STATE state, next_state;
|
|
__ACTION action;
|
|
int pos, last_arg;
|
|
int max_pos_arg = n;
|
|
/* Only need types that can be reached via vararg promotions. */
|
|
enum types { INT, LONG_INT, QUAD_INT, CHAR_PTR, DOUBLE, LONG_DOUBLE, WIDE_CHAR };
|
|
# ifdef _MB_CAPABLE
|
|
wchar_t wc;
|
|
mbstate_t wc_state;
|
|
int nbytes;
|
|
# endif
|
|
|
|
/* if this isn't the first call, pick up where we left off last time */
|
|
if (*last_fmt != NULL)
|
|
fmt = *last_fmt;
|
|
|
|
# ifdef _MB_CAPABLE
|
|
memset (&wc_state, '\0', sizeof (wc_state));
|
|
# endif
|
|
|
|
/* we need to process either to end of fmt string or until we have actually
|
|
read the desired parameter from the vararg list. */
|
|
while (*fmt && n >= numargs)
|
|
{
|
|
# ifdef _MB_CAPABLE
|
|
while ((nbytes = __MBTOWC (data, &wc, fmt, MB_CUR_MAX, &wc_state)) > 0)
|
|
{
|
|
fmt += nbytes;
|
|
if (wc == '%')
|
|
break;
|
|
}
|
|
|
|
if (nbytes <= 0)
|
|
break;
|
|
# else
|
|
while (*fmt != '\0' && *fmt != '%')
|
|
fmt += 1;
|
|
|
|
if (*fmt == '\0')
|
|
break;
|
|
|
|
fmt++;
|
|
# endif /* ! _MB_CAPABLE */
|
|
state = START;
|
|
flags = 0;
|
|
pos = -1;
|
|
number = 0;
|
|
spec_type = INT;
|
|
|
|
/* Use state/action table to process format specifiers. We ignore invalid
|
|
formats and we are only interested in information that tells us how to
|
|
read the vararg list. */
|
|
while (state != DONE)
|
|
{
|
|
ch = *fmt++;
|
|
chtype = __chclass[ch];
|
|
next_state = __state_table[state][chtype];
|
|
action = __action_table[state][chtype];
|
|
state = next_state;
|
|
|
|
switch (action)
|
|
{
|
|
case GETMOD: /* we have format modifier */
|
|
switch (ch)
|
|
{
|
|
case 'h':
|
|
/* No flag needed, since short and char promote to int. */
|
|
break;
|
|
case 'L':
|
|
flags |= LONGDBL;
|
|
break;
|
|
case 'q':
|
|
flags |= QUADINT;
|
|
break;
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
case 'j':
|
|
if (sizeof (intmax_t) == sizeof (long))
|
|
flags |= LONGINT;
|
|
else
|
|
flags |= QUADINT;
|
|
break;
|
|
case 'z':
|
|
if (sizeof (size_t) <= sizeof (int))
|
|
/* no flag needed */;
|
|
else if (sizeof (size_t) <= sizeof (long))
|
|
flags |= LONGINT;
|
|
else
|
|
/* POSIX states that at least one programming
|
|
environment must support size_t no wider than
|
|
long, but that means other environments can
|
|
have size_t as wide as long long. */
|
|
flags |= QUADINT;
|
|
break;
|
|
case 't':
|
|
if (sizeof (ptrdiff_t) <= sizeof (int))
|
|
/* no flag needed */;
|
|
else if (sizeof (ptrdiff_t) <= sizeof (long))
|
|
flags |= LONGINT;
|
|
else
|
|
/* POSIX states that at least one programming
|
|
environment must support ptrdiff_t no wider than
|
|
long, but that means other environments can
|
|
have ptrdiff_t as wide as long long. */
|
|
flags |= QUADINT;
|
|
break;
|
|
# endif /* _WANT_IO_C99_FORMATS */
|
|
case 'l':
|
|
default:
|
|
# if defined _WANT_IO_C99_FORMATS || !defined _NO_LONGLONG
|
|
if (*fmt == 'l')
|
|
{
|
|
flags |= QUADINT;
|
|
++fmt;
|
|
}
|
|
else
|
|
# endif
|
|
flags |= LONGINT;
|
|
break;
|
|
}
|
|
break;
|
|
case GETARG: /* we have format specifier */
|
|
{
|
|
numargs &= (MAX_POS_ARGS - 1);
|
|
/* process the specifier and translate it to a type to fetch from varargs */
|
|
switch (ch)
|
|
{
|
|
case 'd':
|
|
case 'i':
|
|
case 'o':
|
|
case 'x':
|
|
case 'X':
|
|
case 'u':
|
|
if (flags & LONGINT)
|
|
spec_type = LONG_INT;
|
|
# ifndef _NO_LONGLONG
|
|
else if (flags & QUADINT)
|
|
spec_type = QUAD_INT;
|
|
# endif
|
|
else
|
|
spec_type = INT;
|
|
break;
|
|
case 'D':
|
|
case 'U':
|
|
case 'O':
|
|
spec_type = LONG_INT;
|
|
break;
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
case 'a':
|
|
case 'A':
|
|
case 'F':
|
|
# endif
|
|
case 'f':
|
|
case 'g':
|
|
case 'G':
|
|
case 'E':
|
|
case 'e':
|
|
# ifndef _NO_LONGDBL
|
|
if (flags & LONGDBL)
|
|
spec_type = LONG_DOUBLE;
|
|
else
|
|
# endif
|
|
spec_type = DOUBLE;
|
|
break;
|
|
case 's':
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
case 'S':
|
|
# endif
|
|
case 'p':
|
|
case 'n':
|
|
spec_type = CHAR_PTR;
|
|
break;
|
|
case 'c':
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
if (flags & LONGINT)
|
|
spec_type = WIDE_CHAR;
|
|
else
|
|
# endif
|
|
spec_type = INT;
|
|
break;
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
case 'C':
|
|
spec_type = WIDE_CHAR;
|
|
break;
|
|
# endif
|
|
}
|
|
|
|
/* if we have a positional parameter, just store the type, otherwise
|
|
fetch the parameter from the vararg list */
|
|
if (pos != -1)
|
|
arg_type[pos] = spec_type;
|
|
else
|
|
{
|
|
switch (spec_type)
|
|
{
|
|
case LONG_INT:
|
|
args[numargs++].val_long = va_arg (*ap, long);
|
|
break;
|
|
case QUAD_INT:
|
|
args[numargs++].val_quad_t = va_arg (*ap, quad_t);
|
|
break;
|
|
case WIDE_CHAR:
|
|
args[numargs++].val_wint_t = va_arg (*ap, wint_t);
|
|
break;
|
|
case INT:
|
|
args[numargs++].val_int = va_arg (*ap, int);
|
|
break;
|
|
case CHAR_PTR:
|
|
args[numargs++].val_char_ptr_t = va_arg (*ap, char *);
|
|
break;
|
|
case DOUBLE:
|
|
args[numargs++].val_double = va_arg (*ap, double);
|
|
break;
|
|
case LONG_DOUBLE:
|
|
args[numargs++].val__LONG_DOUBLE = va_arg (*ap, _LONG_DOUBLE);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case GETPOS: /* we have positional specifier */
|
|
if (arg_type[0] == -1)
|
|
memset (arg_type, 0, sizeof (int) * MAX_POS_ARGS);
|
|
pos = number - 1;
|
|
max_pos_arg = (max_pos_arg > pos ? max_pos_arg : pos);
|
|
break;
|
|
case PWPOS: /* we have positional specifier for width or precision */
|
|
if (arg_type[0] == -1)
|
|
memset (arg_type, 0, sizeof (int) * MAX_POS_ARGS);
|
|
number -= 1;
|
|
arg_type[number] = INT;
|
|
max_pos_arg = (max_pos_arg > number ? max_pos_arg : number);
|
|
break;
|
|
case GETPWB: /* we require format pushback */
|
|
--fmt;
|
|
/* fallthrough */
|
|
case GETPW: /* we have a variable precision or width to acquire */
|
|
args[numargs++].val_int = va_arg (*ap, int);
|
|
break;
|
|
case NUMBER: /* we have a number to process */
|
|
number = (ch - '0');
|
|
while ((ch = *fmt) != '\0' && is_digit (ch))
|
|
{
|
|
number = number * 10 + (ch - '0');
|
|
++fmt;
|
|
}
|
|
break;
|
|
case SKIPNUM: /* we have a number to skip */
|
|
while ((ch = *fmt) != '\0' && is_digit (ch))
|
|
++fmt;
|
|
break;
|
|
case NOOP:
|
|
default:
|
|
break; /* do nothing */
|
|
}
|
|
}
|
|
}
|
|
|
|
/* process all arguments up to at least the one we are looking for and if we
|
|
have seen the end of the string, then process up to the max argument needed */
|
|
if (*fmt == '\0')
|
|
last_arg = max_pos_arg;
|
|
else
|
|
last_arg = n;
|
|
|
|
while (numargs <= last_arg)
|
|
{
|
|
switch (arg_type[numargs])
|
|
{
|
|
case LONG_INT:
|
|
args[numargs++].val_long = va_arg (*ap, long);
|
|
break;
|
|
case QUAD_INT:
|
|
args[numargs++].val_quad_t = va_arg (*ap, quad_t);
|
|
break;
|
|
case CHAR_PTR:
|
|
args[numargs++].val_char_ptr_t = va_arg (*ap, char *);
|
|
break;
|
|
case DOUBLE:
|
|
args[numargs++].val_double = va_arg (*ap, double);
|
|
break;
|
|
case LONG_DOUBLE:
|
|
args[numargs++].val__LONG_DOUBLE = va_arg (*ap, _LONG_DOUBLE);
|
|
break;
|
|
case WIDE_CHAR:
|
|
args[numargs++].val_wint_t = va_arg (*ap, wint_t);
|
|
break;
|
|
case INT:
|
|
default:
|
|
args[numargs++].val_int = va_arg (*ap, int);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* alter the global numargs value and keep a reference to the last bit of the fmt
|
|
string we processed here because the caller will continue processing where we started */
|
|
*numargs_p = numargs;
|
|
*last_fmt = fmt;
|
|
return &args[n];
|
|
}
|
|
#endif /* !_NO_POS_ARGS */
|