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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: };