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1943 lines
50 KiB
C
1943 lines
50 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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* 4. 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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<<vfwprintf>>, <<vwprintf>>, <<vswprintf>>---wide character format argument list
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INDEX
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vfwprintf
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INDEX
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_vfwprintf_r
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INDEX
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vwprintf
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INDEX
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_vwprintf_r
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INDEX
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vswprintf
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INDEX
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_vswprintf_r
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ANSI_SYNOPSIS
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#include <stdio.h>
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#include <stdarg.h>
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#include <wchar.h>
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int vwprintf(const wchar_t *<[fmt]>, va_list <[list]>);
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int vfwprintf(FILE *<[fp]>, const wchar_t *<[fmt]>, va_list <[list]>);
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int vswprintf(wchar_t *<[str]>, size_t <[size]>, const wchar_t *<[fmt]>,
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va_list <[list]>);
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int _vwprintf_r(struct _reent *<[reent]>, const wchar_t *<[fmt]>,
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va_list <[list]>);
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int _vfwprintf_r(struct _reent *<[reent]>, FILE *<[fp]>,
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const wchar_t *<[fmt]>, va_list <[list]>);
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int _vswprintf_r(struct _reent *<[reent]>, wchar_t *<[str]>,
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size_t <[size]>, const wchar_t *<[fmt]>, va_list <[list]>);
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DESCRIPTION
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<<vwprintf>>, <<vfwprintf>> and <<vswprintf>> are (respectively) variants
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of <<wprintf>>, <<fwprintf>> and <<swprintf>>. They differ only in allowing
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their caller to pass the variable argument list as a <<va_list>> object
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(initialized by <<va_start>>) rather than directly accepting a variable
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number of arguments. The caller is responsible for calling <<va_end>>.
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<<_vwprintf_r>>, <<_vfwprintf_r>> and <<_vswprintf_r>> are reentrant
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versions of the 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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POSIX-1.2008 with extensions; C99 (compliant except for POSIX extensions).
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Supporting OS subroutines required: <<close>>, <<fstat>>, <<isatty>>,
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<<lseek>>, <<read>>, <<sbrk>>, <<write>>.
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SEEALSO
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<<wprintf>>, <<fwprintf>> and <<swprintf>>.
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*/
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/*
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* Actual wprintf 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 VFWPRINTF vfiwprintf
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# ifdef STRING_ONLY
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# define _VFWPRINTF_R _svfiwprintf_r
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# else
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# define _VFWPRINTF_R _vfiwprintf_r
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# endif
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#else
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# define VFWPRINTF vfwprintf
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# ifdef STRING_ONLY
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# define _VFWPRINTF_R _svfwprintf_r
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# else
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# define _VFWPRINTF_R _vfwprintf_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 "fvwrite.h"
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#include "vfieeefp.h"
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#ifdef __HAVE_LOCALE_INFO_EXTENDED__
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#include "../locale/lnumeric.h"
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#endif
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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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int _EXFUN(_VFWPRINTF_R, (struct _reent *, FILE *, _CONST wchar_t *, va_list));
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/* Defined in vfprintf.c. */
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#ifdef STRING_ONLY
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#define __SPRINT __ssprint_r
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#else
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#define __SPRINT __sprint_r
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#endif
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int _EXFUN(__SPRINT, (struct _reent *, FILE *, register struct __suio *));
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#ifndef STRING_ONLY
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/*
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* Helper function for `fprintf to unbuffered unix file': creates a
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* temporary buffer. We only work on write-only files; this avoids
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* worries about ungetc buffers and so forth.
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*/
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static int
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_DEFUN(__sbwprintf, (rptr, fp, fmt, ap),
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struct _reent *rptr _AND
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register FILE *fp _AND
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_CONST wchar_t *fmt _AND
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va_list ap)
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{
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int ret;
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FILE fake;
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unsigned char buf[BUFSIZ];
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/* copy the important variables */
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fake._flags = fp->_flags & ~__SNBF;
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fake._flags2 = fp->_flags2;
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fake._file = fp->_file;
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fake._cookie = fp->_cookie;
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fake._write = fp->_write;
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/* set up the buffer */
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fake._bf._base = fake._p = buf;
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fake._bf._size = fake._w = sizeof (buf);
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fake._lbfsize = 0; /* not actually used, but Just In Case */
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#ifndef __SINGLE_THREAD__
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__lock_init_recursive (fake._lock);
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#endif
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/* do the work, then copy any error status */
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ret = _VFWPRINTF_R (rptr, &fake, fmt, ap);
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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;
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#ifndef __SINGLE_THREAD__
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__lock_close_recursive (fake._lock);
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#endif
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return (ret);
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}
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#endif /* !STRING_ONLY */
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#if defined (FLOATING_POINT) || defined (_WANT_IO_C99_FORMATS)
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# include <locale.h>
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#endif
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#ifdef FLOATING_POINT
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# include <math.h>
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/* For %La, an exponent of 15 bits occupies the exponent character, a
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sign, and up to 5 digits. */
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# define MAXEXPLEN 7
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# define DEFPREC 6
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# ifdef _NO_LONGDBL
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extern char *_dtoa_r _PARAMS((struct _reent *, double, int,
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int, int *, int *, char **));
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# define _PRINTF_FLOAT_TYPE double
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# define _DTOA_R _dtoa_r
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# define FREXP frexp
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# else /* !_NO_LONGDBL */
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extern char *_ldtoa_r _PARAMS((struct _reent *, _LONG_DOUBLE, int,
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int, int *, int *, char **));
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extern int _EXFUN(_ldcheck,(_LONG_DOUBLE *));
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# define _PRINTF_FLOAT_TYPE _LONG_DOUBLE
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# define _DTOA_R _ldtoa_r
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/* FIXME - frexpl is not yet supported; and cvt infloops if (double)f
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converts a finite value into infinity. */
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/* # define FREXP frexpl */
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# define FREXP(f,e) ((_LONG_DOUBLE) frexp ((double)f, e))
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# endif /* !_NO_LONGDBL */
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static wchar_t *wcvt(struct _reent *, _PRINTF_FLOAT_TYPE, int, int, wchar_t *,
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int *, int, int *, wchar_t *, int);
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static int wexponent(wchar_t *, int, int);
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#endif /* FLOATING_POINT */
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/* BUF must be big enough for the maximum %#llo (assuming long long is
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at most 64 bits, this would be 23 characters), the maximum
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multibyte character %C, and the maximum default precision of %La
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(assuming long double is at most 128 bits with 113 bits of
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mantissa, this would be 29 characters). %e, %f, and %g use
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reentrant storage shared with mprec. All other formats that use
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buf get by with fewer characters. Making BUF slightly bigger
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reduces the need for malloc in %.*a and %ls/%S, when large precision or
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long strings are processed.
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The bigger size of 100 bytes is used on systems which allow number
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strings using the locale's grouping character. Since that's a multibyte
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value, we should use a conservative value.
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*/
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#ifdef _WANT_IO_C99_FORMATS
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#define BUF 100
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#else
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#define BUF 40
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#endif
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#if defined _MB_CAPABLE && MB_LEN_MAX > BUF
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# undef BUF
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# define BUF MB_LEN_MAX
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#endif
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#ifndef _NO_LONGLONG
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# define quad_t long long
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# define u_quad_t unsigned long long
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#else
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# define quad_t long
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# define u_quad_t unsigned long
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#endif
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typedef quad_t * quad_ptr_t;
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typedef _PTR void_ptr_t;
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typedef char * char_ptr_t;
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typedef wchar_t* wchar_ptr_t;
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typedef long * long_ptr_t;
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typedef int * int_ptr_t;
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typedef short * short_ptr_t;
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#ifndef _NO_POS_ARGS
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# ifdef NL_ARGMAX
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# define MAX_POS_ARGS NL_ARGMAX
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# else
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# define MAX_POS_ARGS 32
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# endif
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union arg_val
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{
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int val_int;
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u_int val_u_int;
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long val_long;
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u_long val_u_long;
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float val_float;
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double val_double;
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_LONG_DOUBLE val__LONG_DOUBLE;
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int_ptr_t val_int_ptr_t;
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short_ptr_t val_short_ptr_t;
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long_ptr_t val_long_ptr_t;
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char_ptr_t val_char_ptr_t;
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wchar_ptr_t val_wchar_ptr_t;
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quad_ptr_t val_quad_ptr_t;
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void_ptr_t val_void_ptr_t;
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quad_t val_quad_t;
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u_quad_t val_u_quad_t;
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wint_t val_wint_t;
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};
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static union arg_val *
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_EXFUN(get_arg, (struct _reent *data, int n, wchar_t *fmt,
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va_list *ap, int *numargs, union arg_val *args,
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int *arg_type, wchar_t **last_fmt));
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#endif /* !_NO_POS_ARGS */
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/*
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* Macros for converting digits to letters and vice versa
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*/
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#define to_digit(c) ((c) - L'0')
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#define is_digit(c) ((unsigned)to_digit (c) <= 9)
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#define to_char(n) ((n) + L'0')
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/*
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* Flags used during conversion.
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*/
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#define ALT 0x001 /* alternate form */
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#define HEXPREFIX 0x002 /* add 0x or 0X prefix */
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#define LADJUST 0x004 /* left adjustment */
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#define LONGDBL 0x008 /* long double */
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#define LONGINT 0x010 /* long integer */
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#ifndef _NO_LONGLONG
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# define QUADINT 0x020 /* quad integer */
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#else /* ifdef _NO_LONGLONG, make QUADINT equivalent to LONGINT, so
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that %lld behaves the same as %ld, not as %d, as expected if:
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sizeof (long long) = sizeof long > sizeof int */
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# define QUADINT LONGINT
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#endif
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#define SHORTINT 0x040 /* short integer */
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#define ZEROPAD 0x080 /* zero (as opposed to blank) pad */
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#define FPT 0x100 /* Floating point number */
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#ifdef _WANT_IO_C99_FORMATS
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# define CHARINT 0x200 /* char as integer */
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#else /* define as 0, to make SARG and UARG occupy fewer instructions */
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# define CHARINT 0
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#endif
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#ifdef _WANT_IO_C99_FORMATS
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# define GROUPING 0x400 /* use grouping ("'" flag) */
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#endif
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#ifndef STRING_ONLY
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int
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_DEFUN(VFWPRINTF, (fp, fmt0, ap),
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FILE * fp _AND
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_CONST wchar_t *fmt0 _AND
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va_list ap)
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{
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int result;
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result = _VFWPRINTF_R (_REENT, fp, fmt0, ap);
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return result;
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}
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#endif /* STRING_ONLY */
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int
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_DEFUN(_VFWPRINTF_R, (data, fp, fmt0, ap),
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struct _reent *data _AND
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FILE * fp _AND
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_CONST wchar_t *fmt0 _AND
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va_list ap)
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{
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register wchar_t *fmt; /* format string */
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register wint_t ch; /* character from fmt */
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register int n, m; /* handy integers (short term usage) */
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register wchar_t *cp; /* handy char pointer (short term usage) */
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register struct __siov *iovp;/* for PRINT macro */
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register int flags; /* flags as above */
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wchar_t *fmt_anchor; /* current format spec being processed */
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#ifndef _NO_POS_ARGS
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int N; /* arg number */
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int arg_index; /* index into args processed directly */
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int numargs; /* number of varargs read */
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wchar_t *saved_fmt; /* saved fmt pointer */
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union arg_val args[MAX_POS_ARGS];
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int arg_type[MAX_POS_ARGS];
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int is_pos_arg; /* is current format positional? */
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int old_is_pos_arg; /* is current format positional? */
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#endif
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int ret; /* return value accumulator */
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int width; /* width from format (%8d), or 0 */
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int prec; /* precision from format (%.3d), or -1 */
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wchar_t sign; /* sign prefix (' ', '+', '-', or \0) */
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#ifdef _WANT_IO_C99_FORMATS
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/* locale specific numeric grouping */
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wchar_t thousands_sep;
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const char *grouping;
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#endif
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#ifdef _MB_CAPABLE
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mbstate_t state; /* mbtowc calls from library must not change state */
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#endif
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#ifdef FLOATING_POINT
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wchar_t decimal_point;
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wchar_t softsign; /* temporary negative sign for floats */
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union { int i; _PRINTF_FLOAT_TYPE fp; } _double_ = {0};
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# define _fpvalue (_double_.fp)
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int expt; /* integer value of exponent */
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int expsize = 0; /* character count for expstr */
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wchar_t expstr[MAXEXPLEN]; /* buffer for exponent string */
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int lead; /* sig figs before decimal or group sep */
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#endif /* FLOATING_POINT */
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#if defined (FLOATING_POINT) || defined (_WANT_IO_C99_FORMATS)
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int ndig = 0; /* actual number of digits returned by cvt */
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#endif
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#ifdef _WANT_IO_C99_FORMATS
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int nseps; /* number of group separators with ' */
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int nrepeats; /* number of repeats of the last group */
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#endif
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u_quad_t _uquad; /* integer arguments %[diouxX] */
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enum { OCT, DEC, HEX } base;/* base for [diouxX] conversion */
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int dprec; /* a copy of prec if [diouxX], 0 otherwise */
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int realsz; /* field size expanded by dprec */
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int size = 0; /* size of converted field or string */
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wchar_t *xdigs = NULL; /* digits for [xX] conversion */
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#define NIOV 8
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struct __suio uio; /* output information: summary */
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struct __siov iov[NIOV];/* ... and individual io vectors */
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wchar_t buf[BUF]; /* space for %c, %ls/%S, %[diouxX], %[aA] */
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wchar_t ox[2]; /* space for 0x hex-prefix */
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wchar_t *malloc_buf = NULL;/* handy pointer for malloced buffers */
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/*
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* Choose PADSIZE to trade efficiency vs. size. If larger printf
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* fields occur frequently, increase PADSIZE and make the initialisers
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* below longer.
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*/
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#define PADSIZE 16 /* pad chunk size */
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static _CONST wchar_t blanks[PADSIZE] =
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{L' ',L' ',L' ',L' ',L' ',L' ',L' ',L' ',
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L' ',L' ',L' ',L' ',L' ',L' ',L' ',L' '};
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static _CONST wchar_t zeroes[PADSIZE] =
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{L'0',L'0',L'0',L'0',L'0',L'0',L'0',L'0',
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L'0',L'0',L'0',L'0',L'0',L'0',L'0',L'0'};
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#ifdef FLOATING_POINT
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#ifdef _MB_CAPABLE
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#ifdef __HAVE_LOCALE_INFO_EXTENDED__
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decimal_point = *__get_current_numeric_locale ()->wdecimal_point;
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#else
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{
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size_t nconv;
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memset (&state, '\0', sizeof (state));
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nconv = _mbrtowc_r (data, &decimal_point,
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_localeconv_r (data)->decimal_point,
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MB_CUR_MAX, &state);
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if (nconv == (size_t) -1 || nconv == (size_t) -2)
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decimal_point = L'.';
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}
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#endif
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#else
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decimal_point = (wchar_t) *_localeconv_r (data)->decimal_point;
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#endif
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#endif
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/*
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* BEWARE, these `goto error' on error, and PAD uses `n'.
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*/
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#define PRINT(ptr, len) { \
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|
iovp->iov_base = (char *) (ptr); \
|
|
iovp->iov_len = (len) * sizeof (wchar_t); \
|
|
uio.uio_resid += (len) * sizeof (wchar_t); \
|
|
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; \
|
|
}
|
|
|
|
/* 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);
|
|
_flockfile (fp);
|
|
|
|
ORIENT(fp, 1);
|
|
|
|
/* sorry, fwprintf(read_only_file, "") returns EOF, not 0 */
|
|
if (cantwrite (data, fp)) {
|
|
_funlockfile (fp);
|
|
return (EOF);
|
|
}
|
|
|
|
/* optimise fwprintf(stderr) (and other unbuffered Unix files) */
|
|
if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) &&
|
|
fp->_file >= 0) {
|
|
_funlockfile (fp);
|
|
return (__sbwprintf (data, fp, fmt0, ap));
|
|
}
|
|
#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 = (wchar_t *)fmt0;
|
|
uio.uio_iov = iovp = iov;
|
|
uio.uio_resid = 0;
|
|
uio.uio_iovcnt = 0;
|
|
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;
|
|
while (*fmt != L'\0' && *fmt != L'%')
|
|
++fmt;
|
|
if ((m = fmt - cp) != 0) {
|
|
PRINT (cp, m);
|
|
ret += m;
|
|
}
|
|
if (*fmt == L'\0')
|
|
goto done;
|
|
fmt_anchor = fmt;
|
|
fmt++; /* skip over '%' */
|
|
|
|
flags = 0;
|
|
dprec = 0;
|
|
width = 0;
|
|
prec = -1;
|
|
sign = L'\0';
|
|
#ifdef FLOATING_POINT
|
|
lead = 0;
|
|
#endif
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
nseps = nrepeats = 0;
|
|
#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 L'\'':
|
|
#ifdef _MB_CAPABLE
|
|
#ifdef __HAVE_LOCALE_INFO_EXTENDED__
|
|
thousands_sep = *__get_current_numeric_locale ()->wthousands_sep;
|
|
#else
|
|
{
|
|
size_t nconv;
|
|
|
|
memset (&state, '\0', sizeof (state));
|
|
nconv = _mbrtowc_r (data, &thousands_sep,
|
|
_localeconv_r (data)->thousands_sep,
|
|
MB_CUR_MAX, &state);
|
|
if (nconv == (size_t) -1 || nconv == (size_t) -2)
|
|
thousands_sep = L'\0';
|
|
}
|
|
#endif
|
|
#else
|
|
thousands_sep = (wchar_t) *_localeconv_r(data)->thousands_sep;
|
|
#endif
|
|
grouping = _localeconv_r (data)->grouping;
|
|
if (thousands_sep && grouping && *grouping)
|
|
flags |= GROUPING;
|
|
goto rflag;
|
|
#endif
|
|
case L' ':
|
|
/*
|
|
* ``If the space and + flags both appear, the space
|
|
* flag will be ignored.''
|
|
* -- ANSI X3J11
|
|
*/
|
|
if (!sign)
|
|
sign = L' ';
|
|
goto rflag;
|
|
case L'#':
|
|
flags |= ALT;
|
|
goto rflag;
|
|
case L'*':
|
|
#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)) {
|
|
wchar_t *old_fmt = fmt;
|
|
|
|
n = 0;
|
|
ch = *fmt++;
|
|
do {
|
|
n = 10 * n + to_digit (ch);
|
|
ch = *fmt++;
|
|
} while (is_digit (ch));
|
|
|
|
if (ch == L'$') {
|
|
if (n <= MAX_POS_ARGS) {
|
|
n -= 1;
|
|
is_pos_arg = 1;
|
|
}
|
|
else
|
|
goto error;
|
|
}
|
|
else {
|
|
fmt = old_fmt;
|
|
goto rflag;
|
|
}
|
|
}
|
|
#endif /* !_NO_POS_ARGS */
|
|
|
|
/*
|
|
* ``A negative field width argument is taken as a
|
|
* - flag followed by a positive field width.''
|
|
* -- ANSI X3J11
|
|
* They don't exclude field widths read from args.
|
|
*/
|
|
width = GET_ARG (n, ap, int);
|
|
#ifndef _NO_POS_ARGS
|
|
is_pos_arg = old_is_pos_arg;
|
|
#endif
|
|
if (width >= 0)
|
|
goto rflag;
|
|
width = -width;
|
|
/* FALLTHROUGH */
|
|
case L'-':
|
|
flags |= LADJUST;
|
|
goto rflag;
|
|
case L'+':
|
|
sign = L'+';
|
|
goto rflag;
|
|
case L'.':
|
|
if ((ch = *fmt++) == L'*') {
|
|
#ifndef _NO_POS_ARGS
|
|
/* we must check for positional arg used for dynamic width */
|
|
n = N;
|
|
old_is_pos_arg = is_pos_arg;
|
|
is_pos_arg = 0;
|
|
if (is_digit (*fmt)) {
|
|
wchar_t *old_fmt = fmt;
|
|
|
|
n = 0;
|
|
ch = *fmt++;
|
|
do {
|
|
n = 10 * n + to_digit (ch);
|
|
ch = *fmt++;
|
|
} while (is_digit (ch));
|
|
|
|
if (ch == L'$') {
|
|
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 L'0':
|
|
/*
|
|
* ``Note that 0 is taken as a flag, not as the
|
|
* beginning of a field width.''
|
|
* -- ANSI X3J11
|
|
*/
|
|
flags |= ZEROPAD;
|
|
goto rflag;
|
|
case L'1': case L'2': case L'3': case L'4':
|
|
case L'5': case L'6': case L'7': case L'8': case L'9':
|
|
n = 0;
|
|
do {
|
|
n = 10 * n + to_digit (ch);
|
|
ch = *fmt++;
|
|
} while (is_digit (ch));
|
|
#ifndef _NO_POS_ARGS
|
|
if (ch == L'$') {
|
|
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'L':
|
|
flags |= LONGDBL;
|
|
goto rflag;
|
|
#endif
|
|
case L'h':
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
if (*fmt == L'h') {
|
|
fmt++;
|
|
flags |= CHARINT;
|
|
} else
|
|
#endif
|
|
flags |= SHORTINT;
|
|
goto rflag;
|
|
case L'l':
|
|
#if defined _WANT_IO_C99_FORMATS || !defined _NO_LONGLONG
|
|
if (*fmt == L'l') {
|
|
fmt++;
|
|
flags |= QUADINT;
|
|
} else
|
|
#endif
|
|
flags |= LONGINT;
|
|
goto rflag;
|
|
case L'q': /* GNU extension */
|
|
flags |= QUADINT;
|
|
goto rflag;
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
case L'j':
|
|
if (sizeof (intmax_t) == sizeof (long))
|
|
flags |= LONGINT;
|
|
else
|
|
flags |= QUADINT;
|
|
goto rflag;
|
|
case L'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 L'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 L'C': /* POSIX extension */
|
|
#endif /* _WANT_IO_C99_FORMATS */
|
|
case L'c':
|
|
cp = buf;
|
|
if (ch == L'c' && !(flags & LONGINT)) {
|
|
wint_t wc = btowc ((int) GET_ARG (N, ap, int));
|
|
if (wc == WEOF) {
|
|
fp->_flags |= __SERR;
|
|
goto error;
|
|
}
|
|
cp[0] = (wchar_t) wc;
|
|
}
|
|
else
|
|
{
|
|
cp[0] = GET_ARG (N, ap, int);
|
|
}
|
|
cp[1] = L'\0';
|
|
size = 1;
|
|
sign = L'\0';
|
|
break;
|
|
case L'd':
|
|
case L'i':
|
|
_uquad = SARG ();
|
|
#ifndef _NO_LONGLONG
|
|
if ((quad_t)_uquad < 0)
|
|
#else
|
|
if ((long) _uquad < 0)
|
|
#endif
|
|
{
|
|
|
|
_uquad = -_uquad;
|
|
sign = L'-';
|
|
}
|
|
base = DEC;
|
|
goto number;
|
|
#ifdef FLOATING_POINT
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
case L'a':
|
|
case L'A':
|
|
case L'F':
|
|
# endif
|
|
case L'e':
|
|
case L'E':
|
|
case L'f':
|
|
case L'g':
|
|
case L'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 <= L'G') /* 'A', 'E', 'F', or 'G' */
|
|
cp = L"INF";
|
|
else
|
|
cp = L"inf";
|
|
size = 3;
|
|
flags &= ~ZEROPAD;
|
|
break;
|
|
}
|
|
if (isnan (_fpvalue)) {
|
|
if (ch <= L'G') /* 'A', 'E', 'F', or 'G' */
|
|
cp = L"NAN";
|
|
else
|
|
cp = L"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 = L'-';
|
|
if (ch <= L'G') /* 'A', 'E', 'F', or 'G' */
|
|
cp = L"INF";
|
|
else
|
|
cp = L"inf";
|
|
size = 3;
|
|
flags &= ~ZEROPAD;
|
|
break;
|
|
}
|
|
if (expt == 1) {
|
|
if (ch <= L'G') /* 'A', 'E', 'F', or 'G' */
|
|
cp = L"NAN";
|
|
else
|
|
cp = L"nan";
|
|
size = 3;
|
|
flags &= ~ZEROPAD;
|
|
break;
|
|
}
|
|
# endif /* !_NO_LONGDBL */
|
|
|
|
cp = buf;
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
if (ch == L'a' || ch == L'A') {
|
|
ox[0] = L'0';
|
|
ox[1] = ch == L'a' ? L'x' : L'X';
|
|
flags |= HEXPREFIX;
|
|
if (prec >= BUF)
|
|
{
|
|
if ((malloc_buf =
|
|
(wchar_t *)_malloc_r (data, (prec + 1) * sizeof (wchar_t)))
|
|
== NULL)
|
|
{
|
|
fp->_flags |= __SERR;
|
|
goto error;
|
|
}
|
|
cp = malloc_buf;
|
|
}
|
|
} else
|
|
# endif /* _WANT_IO_C99_FORMATS */
|
|
if (prec == -1) {
|
|
prec = DEFPREC;
|
|
} else if ((ch == L'g' || ch == L'G') && prec == 0) {
|
|
prec = 1;
|
|
}
|
|
|
|
flags |= FPT;
|
|
|
|
cp = wcvt (data, _fpvalue, prec, flags, &softsign,
|
|
&expt, ch, &ndig, cp, BUF);
|
|
|
|
/* If buf is not large enough for the converted wchar_t
|
|
sequence, call wcvt again with a malloced new buffer.
|
|
This should happen fairly rarely.
|
|
*/
|
|
if (cp == buf && ndig > BUF && malloc_buf == NULL) {
|
|
if ((malloc_buf =
|
|
(wchar_t *)_malloc_r (data, ndig * sizeof (wchar_t)))
|
|
== NULL)
|
|
{
|
|
fp->_flags |= __SERR;
|
|
goto error;
|
|
}
|
|
cp = wcvt (data, _fpvalue, prec, flags, &softsign,
|
|
&expt, ch, &ndig, malloc_buf, ndig);
|
|
}
|
|
|
|
if (ch == L'g' || ch == L'G') {
|
|
if (expt <= -4 || expt > prec)
|
|
ch -= 2; /* 'e' or 'E' */
|
|
else
|
|
ch = L'g';
|
|
}
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
else if (ch == L'F')
|
|
ch = L'f';
|
|
# endif
|
|
if (ch <= L'e') { /* 'a', 'A', 'e', or 'E' fmt */
|
|
--expt;
|
|
expsize = wexponent (expstr, expt, ch);
|
|
size = expsize + ndig;
|
|
if (ndig > 1 || flags & ALT)
|
|
++size;
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
flags &= ~GROUPING;
|
|
# endif
|
|
} else {
|
|
if (ch == L'f') { /* f fmt */
|
|
if (expt > 0) {
|
|
size = expt;
|
|
if (prec || flags & ALT)
|
|
size += prec + 1;
|
|
} else /* "0.X" */
|
|
size = (prec || flags & ALT)
|
|
? prec + 2
|
|
: 1;
|
|
} else if (expt >= ndig) { /* fixed g fmt */
|
|
size = expt;
|
|
if (flags & ALT)
|
|
++size;
|
|
} else
|
|
size = ndig + (expt > 0 ?
|
|
1 : 2 - 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;
|
|
} else
|
|
# endif
|
|
lead = expt;
|
|
}
|
|
if (softsign)
|
|
sign = L'-';
|
|
break;
|
|
#endif /* FLOATING_POINT */
|
|
case L'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 L'o':
|
|
_uquad = UARG ();
|
|
base = OCT;
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
flags &= ~GROUPING;
|
|
#endif
|
|
goto nosign;
|
|
case L'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 = L"0123456789abcdef";
|
|
flags |= HEXPREFIX;
|
|
ox[0] = L'0';
|
|
ox[1] = ch = L'x';
|
|
goto nosign;
|
|
case L's':
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
case L'S': /* POSIX extension */
|
|
#endif
|
|
sign = '\0';
|
|
cp = GET_ARG (N, ap, wchar_ptr_t);
|
|
#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 = L"(null)";
|
|
size = ((unsigned) prec > 6U) ? 6 : prec;
|
|
}
|
|
else
|
|
#endif /* __OPTIMIZE_SIZE__ */
|
|
#ifdef _MB_CAPABLE
|
|
if (ch == L's' && !(flags & LONGINT)) {
|
|
char *arg = (char *) cp;
|
|
size_t insize = 0, nchars = 0, nconv = 0;
|
|
mbstate_t ps;
|
|
wchar_t *p;
|
|
|
|
if (prec >= 0) {
|
|
char *p = arg;
|
|
memset ((_PTR)&ps, '\0', sizeof (mbstate_t));
|
|
while (nchars < (size_t)prec) {
|
|
nconv = mbrlen (p, MB_CUR_MAX, &ps);
|
|
if (nconv == 0 || nconv == (size_t)-1 ||
|
|
nconv == (size_t)-2)
|
|
break;
|
|
p += nconv;
|
|
++nchars;
|
|
insize += nconv;
|
|
}
|
|
if (nconv == (size_t) -1 || nconv == (size_t) -2) {
|
|
fp->_flags |= __SERR;
|
|
goto error;
|
|
}
|
|
} else
|
|
insize = strlen(arg);
|
|
if (insize >= BUF) {
|
|
if ((malloc_buf = (wchar_t *) _malloc_r (data, (insize + 1) * sizeof (wchar_t)))
|
|
== NULL) {
|
|
fp->_flags |= __SERR;
|
|
goto error;
|
|
}
|
|
cp = malloc_buf;
|
|
} else
|
|
cp = buf;
|
|
memset ((_PTR)&ps, '\0', sizeof (mbstate_t));
|
|
p = cp;
|
|
while (insize != 0) {
|
|
nconv = _mbrtowc_r (data, p, arg, insize, &ps);
|
|
if (nconv == 0 || nconv == (size_t)-1 || nconv == (size_t)-2)
|
|
break;
|
|
++p;
|
|
arg += nconv;
|
|
insize -= nconv;
|
|
}
|
|
if (nconv == (size_t) -1 || nconv == (size_t) -2) {
|
|
fp->_flags |= __SERR;
|
|
goto error;
|
|
}
|
|
*p = L'\0';
|
|
size = p - cp;
|
|
}
|
|
else
|
|
#endif /* _MB_CAPABLE */
|
|
if (prec >= 0) {
|
|
/*
|
|
* can't use wcslen; can only look for the
|
|
* NUL in the first `prec' characters, and
|
|
* strlen () will go further.
|
|
*/
|
|
wchar_t *p = wmemchr (cp, L'\0', prec);
|
|
|
|
if (p != NULL) {
|
|
size = p - cp;
|
|
if (size > prec)
|
|
size = prec;
|
|
} else
|
|
size = prec;
|
|
} else
|
|
size = wcslen (cp);
|
|
|
|
break;
|
|
case L'u':
|
|
_uquad = UARG ();
|
|
base = DEC;
|
|
goto nosign;
|
|
case L'X':
|
|
xdigs = L"0123456789ABCDEF";
|
|
goto hex;
|
|
case 'x':
|
|
xdigs = L"0123456789abcdef";
|
|
hex: _uquad = UARG ();
|
|
base = HEX;
|
|
/* leading 0x/X only if non-zero */
|
|
if (flags & ALT && _uquad != 0) {
|
|
ox[0] = L'0';
|
|
ox[1] = ch;
|
|
flags |= HEXPREFIX;
|
|
}
|
|
|
|
#ifdef _WANT_IO_C99_FORMATS
|
|
flags &= ~GROUPING;
|
|
#endif
|
|
/* unsigned conversions */
|
|
nosign: sign = L'\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 != L'0')
|
|
*--cp = L'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 = thousands_sep;
|
|
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 = L"bug in vfprintf: bad base";
|
|
size = wcslen (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 = L'0';
|
|
|
|
size = buf + BUF - cp;
|
|
skipsize:
|
|
break;
|
|
default: /* "%?" prints ?, unless ? is NUL */
|
|
if (ch == L'\0')
|
|
goto done;
|
|
/* pretend it was %c with argument ch */
|
|
cp = buf;
|
|
*cp = ch;
|
|
size = 1;
|
|
sign = L'\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 >= L'f') { /* 'f' or 'g' */
|
|
if (_fpvalue == 0) {
|
|
/* kludge for __dtoa irregularity */
|
|
PRINT (L"0", 1);
|
|
if (expt < ndig || flags & ALT) {
|
|
PRINT (&decimal_point, 1);
|
|
PAD (ndig - 1, zeroes);
|
|
}
|
|
} else if (expt <= 0) {
|
|
PRINT (L"0", 1);
|
|
if (expt || ndig || flags & ALT) {
|
|
PRINT (&decimal_point, 1);
|
|
PAD (-expt, zeroes);
|
|
PRINT (cp, ndig);
|
|
}
|
|
} else {
|
|
wchar_t *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, 1);
|
|
PRINTANDPAD (cp, convbuf + ndig,
|
|
*grouping, zeroes);
|
|
cp += *grouping;
|
|
}
|
|
if (cp > convbuf + ndig)
|
|
cp = convbuf + ndig;
|
|
}
|
|
#endif
|
|
if (expt < ndig || flags & ALT)
|
|
PRINT (&decimal_point, 1);
|
|
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, 1);
|
|
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
|
|
_funlockfile (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]; different from vfprintf.c:cvt(), the return string
|
|
lives in BUF regardless of CH. LEN is the length of BUF, except
|
|
when CH is [aA], in which case LEN is not in use. If BUF is not
|
|
large enough for the converted string, only the first LEN number
|
|
of characters will be returned in BUF, but *LENGTH will be set to
|
|
the full length of the string before the truncation. */
|
|
static wchar_t *
|
|
wcvt(struct _reent *data, _PRINTF_FLOAT_TYPE value, int ndigits, int flags,
|
|
wchar_t *sign, int *decpt, int ch, int *length, wchar_t *buf, int len)
|
|
{
|
|
int mode, dsgn;
|
|
# 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 = L'-';
|
|
} else
|
|
*sign = L'\0';
|
|
# 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 = L'-';
|
|
} else
|
|
*sign = L'\0';
|
|
# endif /* !_NO_LONGDBL */
|
|
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
if (ch == L'a' || ch == L'A') {
|
|
wchar_t *digits, *bp, *rve;
|
|
/* 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 == L'a' ? L"0123456789abcdef" : L"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 = L'0';
|
|
}
|
|
*rve = *rve == L'9' ? digits[0xa] : *rve + 1;
|
|
} else {
|
|
while (ndigits-- >= 0) {
|
|
*bp++ = L'0';
|
|
}
|
|
}
|
|
*length = bp - buf;
|
|
return buf;
|
|
}
|
|
# endif /* _WANT_IO_C99_FORMATS */
|
|
if (ch == L'f' || ch == L'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 == L'e' || ch == L'E') {
|
|
ndigits++;
|
|
}
|
|
mode = 2; /* ndigits significant digits */
|
|
}
|
|
|
|
{
|
|
char *digits, *bp, *rve;
|
|
#ifndef _MB_CAPABLE
|
|
int i;
|
|
#endif
|
|
|
|
digits = _DTOA_R (data, value, mode, ndigits, decpt, &dsgn, &rve);
|
|
|
|
if ((ch != L'g' && ch != L'G') || flags & ALT) { /* Print trailing zeros */
|
|
bp = digits + ndigits;
|
|
if (ch == L'f' || ch == L'F') {
|
|
if (*digits == L'0' && value)
|
|
*decpt = -ndigits + 1;
|
|
bp += *decpt;
|
|
}
|
|
if (value == 0) /* kludge for __dtoa irregularity */
|
|
rve = bp;
|
|
while (rve < bp)
|
|
*rve++ = '0';
|
|
}
|
|
|
|
*length = rve - digits; /* full length of the string */
|
|
#ifdef _MB_CAPABLE
|
|
_mbsnrtowcs_r (data, buf, (const char **) &digits, *length,
|
|
len, NULL);
|
|
#else
|
|
for (i = 0; i < *length && i < len; ++i)
|
|
buf[i] = (wchar_t) digits[i];
|
|
#endif
|
|
return buf;
|
|
}
|
|
}
|
|
|
|
static int
|
|
wexponent(wchar_t *p0, int exp, int fmtch)
|
|
{
|
|
register wchar_t *p, *t;
|
|
wchar_t expbuf[MAXEXPLEN];
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
int isa = fmtch == L'a' || fmtch == L'A';
|
|
# else
|
|
# define isa 0
|
|
# endif
|
|
|
|
p = p0;
|
|
*p++ = isa ? L'p' - L'a' + fmtch : fmtch;
|
|
if (exp < 0) {
|
|
exp = -exp;
|
|
*p++ = L'-';
|
|
}
|
|
else
|
|
*p++ = L'+';
|
|
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++ = L'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. */
|
|
|
|
/* function to get positional parameter N where n = N - 1 */
|
|
static union arg_val *
|
|
_DEFUN(get_arg, (data, n, fmt, ap, numargs_p, args, arg_type, last_fmt),
|
|
struct _reent *data _AND
|
|
int n _AND
|
|
wchar_t *fmt _AND
|
|
va_list *ap _AND
|
|
int *numargs_p _AND
|
|
union arg_val *args _AND
|
|
int *arg_type _AND
|
|
wchar_t **last_fmt)
|
|
{
|
|
wchar_t 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 };
|
|
|
|
/* if this isn't the first call, pick up where we left off last time */
|
|
if (*last_fmt != NULL)
|
|
fmt = *last_fmt;
|
|
|
|
/* 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)
|
|
{
|
|
while (*fmt != L'\0' && *fmt != L'%')
|
|
fmt += 1;
|
|
|
|
if (*fmt == L'\0')
|
|
break;
|
|
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 = ch < (wchar_t) 256 ? __chclass[ch] : OTHER;
|
|
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 L'h':
|
|
/* No flag needed, since short and char promote to int. */
|
|
break;
|
|
case L'L':
|
|
flags |= LONGDBL;
|
|
break;
|
|
case L'q':
|
|
flags |= QUADINT;
|
|
break;
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
case L'j':
|
|
if (sizeof (intmax_t) == sizeof (long))
|
|
flags |= LONGINT;
|
|
else
|
|
flags |= QUADINT;
|
|
break;
|
|
case L'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 L'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'l':
|
|
default:
|
|
# if defined _WANT_IO_C99_FORMATS || !defined _NO_LONGLONG
|
|
if (*fmt == L'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 L'd':
|
|
case L'i':
|
|
case L'o':
|
|
case L'x':
|
|
case L'X':
|
|
case L'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;
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
case L'a':
|
|
case L'A':
|
|
case L'F':
|
|
# endif
|
|
case L'f':
|
|
case L'g':
|
|
case L'G':
|
|
case L'E':
|
|
case L'e':
|
|
# ifndef _NO_LONGDBL
|
|
if (flags & LONGDBL)
|
|
spec_type = LONG_DOUBLE;
|
|
else
|
|
# endif
|
|
spec_type = DOUBLE;
|
|
break;
|
|
case L's':
|
|
# ifdef _WANT_IO_C99_FORMATS
|
|
case L'S': /* POSIX extension */
|
|
# endif
|
|
case L'p':
|
|
case L'n':
|
|
spec_type = CHAR_PTR;
|
|
break;
|
|
case L'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 L'C': /* POSIX extension */
|
|
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_wchar_ptr_t = va_arg (*ap, wchar_t *);
|
|
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_wchar_ptr_t = va_arg (*ap, wchar_t *);
|
|
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 */
|