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