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Annotation of OpenXM_contrib/gmp/printf/sprintffuns.c, Revision 1.1.1.1

1.1       ohara       1: /* __gmp_sprintf_funs -- support for gmp_sprintf and gmp_vsprintf.
                      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 "config.h"
                     27:
                     28: #if HAVE_STDARG
                     29: #include <stdarg.h>
                     30: #else
                     31: #include <varargs.h>
                     32: #endif
                     33:
                     34: #include <stdio.h>
                     35: #include <stdlib.h>
                     36: #include <string.h>
                     37:
                     38: #include "gmp.h"
                     39: #include "gmp-impl.h"
                     40:
                     41:
                     42: /* The data parameter "bufp" points to a "char *buf" which is the next
                     43:    character to be written, having started as the destination from the
                     44:    application.  This is then increased each time output is produced.  */
                     45:
                     46:
                     47: /* If vsprintf returns -1 then pass it upwards.  It doesn't matter that
                     48:    "*bufp" is ruined in this case, since gmp_doprint will bail out
                     49:    immediately anyway.  */
                     50: static int
                     51: gmp_sprintf_format (char **bufp, const char *fmt, va_list ap)
                     52: {
                     53:   char  *buf = *bufp;
                     54:   int   ret;
                     55:   vsprintf (buf, fmt, ap);
                     56:   ret = strlen (buf);
                     57:   *bufp = buf + ret;
                     58:   return ret;
                     59: }
                     60:
                     61: static int
                     62: gmp_sprintf_memory (char **bufp, const char *str, size_t len)
                     63: {
                     64:   char  *buf = *bufp;
                     65:   *bufp = buf + len;
                     66:   memcpy (buf, str, len);
                     67:   return len;
                     68: }
                     69:
                     70: static int
                     71: gmp_sprintf_reps (char **bufp, int c, int reps)
                     72: {
                     73:   char  *buf = *bufp;
                     74:   ASSERT (reps >= 0);
                     75:   *bufp = buf + reps;
                     76:   memset (buf, c, reps);
                     77:   return reps;
                     78: }
                     79:
                     80: static int
                     81: gmp_sprintf_final (char **bufp, int c, int reps)
                     82: {
                     83:   char  *buf = *bufp;
                     84:   *buf = '\0';
                     85:   return 0;
                     86: }
                     87:
                     88: const struct doprnt_funs_t  __gmp_sprintf_funs = {
                     89:   (doprnt_format_t) gmp_sprintf_format,
                     90:   (doprnt_memory_t) gmp_sprintf_memory,
                     91:   (doprnt_reps_t)   gmp_sprintf_reps,
                     92:   (doprnt_final_t)  gmp_sprintf_final
                     93: };