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/*=============================================================================
This file is part of FLINT.
FLINT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FLINT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FLINT; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
=============================================================================*/
/******************************************************************************
Copyright (C) 2013 William Hart
******************************************************************************/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdarg.h>
#include "flint.h"
int flint_sscanf(const char * s, const char * str, ...)
{
va_list ap;
int * w1 = NULL, *w2 = NULL;
void ** w3;
double * d;
ulong * wu;
slong * w;
int args, floating;
int ret;
char *str2, *s2;
size_t n, len = strlen(str);
if(!strlen(s))
return 0;
str2 = flint_malloc(len + 1);
s2 = flint_malloc(strlen(s) + 1);
/* deal with first substring */
n = strcspn(str, "%");
strncpy(str2, s, n);
str2[n] = '\0';
ret = 0;
len -= n;
str += n;
s += n;
va_start(ap, str);
while (len) /* deal with fmt spec prefixed strings */
{
n = strcspn(str + 2, "%") + 2; /* be sure to skip a %% */
strncpy(str2, str, n);
str2[n] = '\0';
switch (str[1])
{
case 'w':
if (str[2] == 'x')
{
wu = (ulong *) va_arg(ap, ulong *);
ret += sscanf(s, WORD_FMT "x", wu);
s += sprintf(s2, WORD_FMT "x", *wu);
s += n - 3;
} else if (str[2] == 'u')
{
wu = (ulong *) va_arg(ap, ulong *);
ret += sscanf(s, WORD_FMT "u", wu);
s += sprintf(s2, WORD_FMT "u", *wu);
s += n - 3;
} else if (str[2] == 'd')
{
w = (slong *) va_arg(ap, slong *);
ret += sscanf(s, WORD_FMT "d", w);
s += sprintf(s2, WORD_FMT "d", *w);
s += n - 3;
} else
{
w = (slong *) va_arg(ap, slong *);
ret += sscanf(s, WORD_FMT "d", w);
s += sprintf(s2, WORD_FMT "d", *w);
s += n - 2;
}
break;
default: /* pass to printf */
args = parse_fmt(&floating, str2);
if (args)
{
if (args == 3)
w1 = va_arg(ap, int *);
if (args >= 2)
w2 = va_arg(ap, int *);
if (floating)
{
d = va_arg(ap, double *);
if (args == 2)
{
ret += sscanf(s, str2, w2, d);
s += sprintf(s2, str2, *w2, *d);
}
else if (args == 3)
{
ret += sscanf(s, str2, w1, w2, d);
s += sprintf(s2, str2, *w1, *w2, *d);
}
else
{
ret += sscanf(s, str2, d);
s += sprintf(s2, str2, *d);
}
} else
{
w3 = va_arg(ap, void **);
if (args == 2)
{
ret += sscanf(s, str2, w2, w3);
s += sprintf(s2, str2, *w2, *w3);
}
else if (args == 3)
{
ret += sscanf(s, str2, w1, w2, w3);
s += sprintf(s2, str2, *w1, *w2, *w3);
}
else
{
ret += sscanf(s, str2, w3);
s += sprintf(s2, str2, *w3);
}
}
} else /* zero args */
s += n;
}
len -= n;
str += n;
}
va_end(ap);
flint_free(str2);
flint_free(s2);
return ret;
}
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