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/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* and/or other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
/*
* 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.
*/
#ifndef VFSCANF_LOCAL
#define VFSCANF_LOCAL
#ifndef NO_FLOATING_POINT
#define FLOATING_POINT
#endif
#ifdef STRING_ONLY
#undef _newlib_flockfile_start
#undef _newlib_flockfile_exit
#undef _newlib_flockfile_end
#define _newlib_flockfile_start(x) {}
#define _newlib_flockfile_exit(x) {}
#define _newlib_flockfile_end(x) {}
#define ungetc sungetc
#define _srefill _ssrefill
#endif
#ifdef FLOATING_POINT
#include <math.h>
#include <float.h>
/* Currently a test is made to see if long double processing is warranted.
This could be changed in the future should the __ldtoa code be
preferred over __dtoa. */
#define _NO_LONGDBL
#include "floatio.h"
#if ((MAXEXP+MAXFRACT+3) > MB_LEN_MAX)
/* "3 = sign + decimal point + NUL". */
# define BUF (MAXEXP+MAXFRACT+3)
#else
# define BUF MB_LEN_MAX
#endif
/* An upper bound for how long a long prints in decimal. 4 / 13 approximates
log (2). Add one char for roundoff compensation and one for the sign. */
#define MAX_LONG_LEN ((CHAR_BIT * sizeof (long) - 1) * 4 / 13 + 2)
#else
#define BUF 40
#endif
#define _NO_LONGLONG
#undef _WANT_IO_C99_FORMATS
#undef _WANT_IO_POS_ARGS
#define _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 SHORT 0x01 /* "h": short. */
#define LONG 0x02 /* "l": long or double. */
#define LONGDBL 0x04 /* "L/ll": long double or long long. */
#define CHAR 0x08 /* "hh": 8 bit integer. */
#define SUPPRESS 0x10 /* Suppress assignment. */
#define POINTER 0x20 /* Weird %p pointer (`fake hex'). */
#define NOSKIP 0x40 /* Do not skip blanks */
/* The following are used in numeric conversions only:
SIGNOK, NDIGITS, DPTOK, and EXPOK are for floating point;
SIGNOK, NDIGITS, PFXOK, and NZDIGITS are for integral. */
#define SIGNOK 0x80 /* "+/-" is (still) legal. */
#define NDIGITS 0x100 /* No digits detected. */
#define DPTOK 0x200 /* (Float) decimal point is still legal. */
#define EXPOK 0x400 /* (Float) exponent (e+3, etc) still legal. */
#define PFXOK 0x200 /* "0x" prefix is (still) legal. */
#define NZDIGITS 0x400 /* No zero digits detected. */
#define NNZDIGITS 0x800 /* No non-zero digits detected. */
/* Conversion types. */
#define CT_CHAR 0 /* "%c" conversion. */
#define CT_CCL 1 /* "%[...]" conversion. */
#define CT_STRING 2 /* "%s" conversion. */
#define CT_INT 3 /* Integer, i.e., strtol. */
#define CT_UINT 4 /* Unsigned integer, i.e., strtoul. */
#define CT_FLOAT 5 /* Floating, i.e., strtod. */
#define u_char unsigned char
#define u_long unsigned long
/* Macro to support positional arguments. */
#define GET_ARG(n, ap, type) (va_arg ((ap), type))
#define MATCH_FAILURE 1
#define INPUT_FAILURE 2
/* All data needed to decode format string are kept in below struct. */
struct _scan_data_t
{
int flags; /* Flags. */
int base; /* Base. */
size_t width; /* Width. */
int nassigned; /* Number of assignments so far. */
int nread; /* Number of chars read so far. */
char *ccltab; /* Table used for [ format. */
int code; /* Current conversion specifier. */
char buf[BUF]; /* Internal buffer for scan. */
/* Internal buffer for scan. */
int (*pfn_ungetc)(int, FILE*);
/* Internal buffer for scan. */
int (*pfn_refill)(FILE*);
};
extern int
_scanf_chars (
struct _scan_data_t *pdata,
FILE *fp, va_list *ap);
extern int
_scanf_i (
struct _scan_data_t *pdata,
FILE *fp, va_list *ap);
/* Make _scanf_float weak symbol, so it won't be linked in if target program
does not need it. */
extern int
_scanf_float (
struct _scan_data_t *pdata,
FILE *fp, va_list *ap) _ATTRIBUTE((__weak__));
#endif
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