1  /* __gmp_asprintf_memory etc -- formatted output to allocated space.
       2  
       3  Copyright 2001, 2002 Free Software Foundation, Inc.
       4  
       5  This file is part of the GNU MP Library.
       6  
       7  The GNU MP Library is free software; you can redistribute it and/or modify
       8  it under the terms of either:
       9  
      10    * the GNU Lesser General Public License as published by the Free
      11      Software Foundation; either version 3 of the License, or (at your
      12      option) any later version.
      13  
      14  or
      15  
      16    * the GNU General Public License as published by the Free Software
      17      Foundation; either version 2 of the License, or (at your option) any
      18      later version.
      19  
      20  or both in parallel, as here.
      21  
      22  The GNU MP Library is distributed in the hope that it will be useful, but
      23  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
      24  or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      25  for more details.
      26  
      27  You should have received copies of the GNU General Public License and the
      28  GNU Lesser General Public License along with the GNU MP Library.  If not,
      29  see https://www.gnu.org/licenses/.  */
      30  
      31  
      32  /* These routines are in a separate file so that the mpz_t, mpq_t and mpf_t
      33     operator<< routines can avoid dragging vsnprintf into the link (via
      34     __gmp_asprintf_format).  */
      35  
      36  #include <stdarg.h>
      37  #include <stdio.h>
      38  #include <stdlib.h>
      39  #include <string.h>
      40  
      41  #include "gmp-impl.h"
      42  
      43  
      44  int
      45  __gmp_asprintf_memory (struct gmp_asprintf_t *d, const char *str, size_t len)
      46  {
      47    GMP_ASPRINTF_T_NEED (d, len);
      48    memcpy (d->buf + d->size, str, len);
      49    d->size += len;
      50    return len;
      51  }
      52  
      53  int
      54  __gmp_asprintf_reps (struct gmp_asprintf_t *d, int c, int reps)
      55  {
      56    GMP_ASPRINTF_T_NEED (d, reps);
      57    memset (d->buf + d->size, c, reps);
      58    d->size += reps;
      59    return reps;
      60  }
      61  
      62  int
      63  __gmp_asprintf_final (struct gmp_asprintf_t *d)
      64  {
      65    char  *buf = d->buf;
      66    ASSERT (d->alloc >= d->size + 1);
      67    buf[d->size] = '\0';
      68    __GMP_REALLOCATE_FUNC_MAYBE_TYPE (buf, d->alloc, d->size+1, char);
      69    *d->result = buf;
      70    return 0;
      71  }