Annotation of OpenXM_contrib/gmp/scanf/sscanffuns.c, Revision 1.1
1.1 ! ohara 1: /* __gmp_sscanf_funs -- support for formatted input from a string.
! 2:
! 3: THE FUNCTIONS IN THIS FILE ARE FOR INTERNAL USE ONLY. THEY'RE ALMOST
! 4: CERTAIN TO BE SUBJECT TO INCOMPATIBLE CHANGES OR DISAPPEAR COMPLETELY IN
! 5: FUTURE GNU MP RELEASES.
! 6:
! 7: Copyright 2001 Free Software Foundation, Inc.
! 8:
! 9: This file is part of the GNU MP Library.
! 10:
! 11: The GNU MP Library is free software; you can redistribute it and/or modify
! 12: it under the terms of the GNU Lesser General Public License as published by
! 13: the Free Software Foundation; either version 2.1 of the License, or (at your
! 14: option) any later version.
! 15:
! 16: The GNU MP Library is distributed in the hope that it will be useful, but
! 17: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
! 18: or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
! 19: License for more details.
! 20:
! 21: You should have received a copy of the GNU Lesser General Public License
! 22: along with the GNU MP Library; see the file COPYING.LIB. If not, write to
! 23: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
! 24: MA 02111-1307, USA. */
! 25:
! 26: #include <stdio.h>
! 27: #include "gmp.h"
! 28: #include "gmp-impl.h"
! 29:
! 30:
! 31: static int
! 32: scan (const char **sp, const char *fmt, void *p1, void *p2)
! 33: {
! 34: return sscanf (*sp, fmt, p1, p2);
! 35: }
! 36:
! 37: static void
! 38: step (const char **sp, int n)
! 39: {
! 40: ASSERT (n >= 0);
! 41:
! 42: /* shouldn't push us past the the end of the string */
! 43: #if WANT_ASSERT
! 44: {
! 45: int i;
! 46: for (i = 0; i < n; i++)
! 47: ASSERT ((*sp)[i] != '\0');
! 48: }
! 49: #endif
! 50:
! 51: (*sp) += n;
! 52: }
! 53:
! 54: static int
! 55: get (const char **sp)
! 56: {
! 57: const char *s;
! 58: int c;
! 59: s = *sp;
! 60: c = *s++;
! 61: if (c == '\0')
! 62: return EOF;
! 63: *sp = s;
! 64: return c;
! 65: }
! 66:
! 67: static void
! 68: unget (int c, const char **sp)
! 69: {
! 70: const char *s;
! 71: s = *sp;
! 72: if (c == EOF)
! 73: {
! 74: ASSERT (*s == '\0');
! 75: return;
! 76: }
! 77: s--;
! 78: ASSERT (*s == c);
! 79: *sp = s;
! 80: }
! 81:
! 82: const struct gmp_doscan_funs_t __gmp_sscanf_funs = {
! 83: (gmp_doscan_scan_t) scan,
! 84: (gmp_doscan_step_t) step,
! 85: (gmp_doscan_get_t) get,
! 86: (gmp_doscan_unget_t) unget,
! 87: };
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