Annotation of OpenXM_contrib/gmp/scanf/sscanffuns.c, Revision 1.1.1.1
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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