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/*
* Copyright (c) 2012-2014 ARM Ltd
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. The name of the company may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY ARM LTD ``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 ARM LTD 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.
*/
#include <newlib.h>
#include <_ansi.h>
#include <reent.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <stdint.h>
#include <wchar.h>
#include <sys/lock.h>
#include <stdarg.h>
#include "local.h"
#include "../stdlib/local.h"
#include "fvwrite.h"
#include "vfieeefp.h"
#include "nano-vfprintf_local.h"
/* Decode and print non-floating point data. */
int
_printf_common (struct _reent *data,
struct _prt_data_t *pdata,
int *realsz,
FILE *fp,
int (*pfunc)(struct _reent *, FILE *,
_CONST char *, size_t len))
{
int n;
/*
* 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 = pdata->dprec > pdata->size ? pdata->dprec : pdata->size;
if (pdata->l_buf[0])
(*realsz)++;
if (pdata->flags & HEXPREFIX)
*realsz += 2;
/* Right-adjusting blank padding. */
if ((pdata->flags & (LADJUST|ZEROPAD)) == 0)
PAD (pdata->width - *realsz, pdata->blank);
/* Prefix. */
n = 0;
if (pdata->l_buf[0])
n++;
if (pdata->flags & HEXPREFIX)
{
pdata->l_buf[n++] = '0';
pdata->l_buf[n++] = pdata->l_buf[2];
}
PRINT (pdata->l_buf, n);
n = pdata->width - *realsz;
if ((pdata->flags & (LADJUST|ZEROPAD)) != ZEROPAD || n < 0)
n = 0;
if (pdata->dprec > pdata->size)
n += pdata->dprec - pdata->size;
PAD (n, pdata->zero);
return 0;
error:
return -1;
}
int
_printf_i (struct _reent *data, struct _prt_data_t *pdata, FILE *fp,
int (*pfunc)(struct _reent *, FILE *, _CONST char *, size_t len),
va_list *ap)
{
/* Field size expanded by dprec. */
int realsz;
u_quad_t _uquad;
int base;
int n;
char *cp = pdata->buf + BUF;
char *xdigs = "0123456789ABCDEF";
/* Decoding the conversion specifier. */
switch (pdata->code)
{
case 'c':
*--cp = GET_ARG (N, *ap, int);
pdata->size = 1;
goto non_number_nosign;
case 'd':
case 'i':
_uquad = SARG (pdata->flags);
if ((long) _uquad < 0)
{
_uquad = -_uquad;
pdata->l_buf[0] = '-';
}
base = 10;
goto number;
case 'u':
case 'o':
_uquad = UARG (pdata->flags);
base = (pdata->code == 'o') ? 8 : 10;
goto nosign;
case 'X':
pdata->l_buf[2] = 'X';
goto hex;
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
*/
pdata->flags |= HEXPREFIX;
if (sizeof (void*) > sizeof (int))
pdata->flags |= LONGINT;
/* NOSTRICT. */
case 'x':
pdata->l_buf[2] = 'x';
xdigs = "0123456789abcdef";
hex:
_uquad = UARG (pdata->flags);
base = 16;
if (pdata->flags & ALT)
pdata->flags |= HEXPREFIX;
/* Leading 0x/X only if non-zero. */
if (_uquad == 0)
pdata->flags &= ~HEXPREFIX;
/* Unsigned conversions. */
nosign:
pdata->l_buf[0] = '\0';
/*
* ``... diouXx conversions ... if a precision is
* specified, the 0 flag will be ignored.''
* -- ANSI X3J11
*/
number:
if ((pdata->dprec = pdata->prec) >= 0)
pdata->flags &= ~ZEROPAD;
/*
* ``The result of converting a zero value with an
* explicit precision of zero is no characters.''
* -- ANSI X3J11
*/
if (_uquad != 0 || pdata->prec != 0)
{
do
{
*--cp = xdigs[_uquad % base];
_uquad /= base;
}
while (_uquad);
}
/* For 'o' conversion, '#' increases the precision to force the first
digit of the result to be zero. */
if (base == 8 && (pdata->flags & ALT) && pdata->prec <= pdata->size)
*--cp = '0';
pdata->size = pdata->buf + BUF - cp;
break;
case 'n':
if (pdata->flags & LONGINT)
*GET_ARG (N, *ap, long_ptr_t) = pdata->ret;
else if (pdata->flags & SHORTINT)
*GET_ARG (N, *ap, short_ptr_t) = pdata->ret;
else
*GET_ARG (N, *ap, int_ptr_t) = pdata->ret;
case '\0':
pdata->size = 0;
break;
case 's':
cp = GET_ARG (N, *ap, char_ptr_t);
/* Precision gives the maximum number of chars to be written from a
string, and take prec == -1 into consideration.
Use normal Newlib approach here to support case where cp is not
nul-terminated. */
char *p = memchr (cp, 0, pdata->prec);
if (p != NULL)
pdata->prec = p - cp;
pdata->size = pdata->prec;
goto non_number_nosign;
default:
/* "%?" prints ?, unless ? is NUL. */
/* Pretend it was %c with argument ch. */
*--cp = pdata->code;
pdata->size = 1;
non_number_nosign:
pdata->l_buf[0] = '\0';
break;
}
/* Output. */
n = _printf_common (data, pdata, &realsz, fp, pfunc);
if (n == -1)
goto error;
PRINT (cp, pdata->size);
/* Left-adjusting padding (always blank). */
if (pdata->flags & LADJUST)
PAD (pdata->width - realsz, pdata->blank);
return (pdata->width > realsz ? pdata->width : realsz);
error:
return -1;
}
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