1  /* Abstract output stream data type.
       2     Copyright (C) 2006, 2019 Free Software Foundation, Inc.
       3     Written by Bruno Haible <bruno@clisp.org>, 2006.
       4  
       5     This program is free software: you can redistribute it and/or modify
       6     it under the terms of the GNU General Public License as published by
       7     the Free Software Foundation; either version 3 of the License, or
       8     (at your option) any later version.
       9  
      10     This program is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      13     GNU General Public License for more details.
      14  
      15     You should have received a copy of the GNU General Public License
      16     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <config.h>
      19  
      20  /* Specification.  */
      21  #include "ostream.h"
      22  
      23  #include <stdio.h>
      24  
      25  struct ostream
      26  {
      27  fields:
      28  };
      29  
      30  #if !HAVE_INLINE
      31  
      32  void
      33  ostream_write_str (ostream_t stream, const char *string)
      34  {
      35    ostream_write_mem (stream, string, strlen (string));
      36  }
      37  
      38  #endif
      39  
      40  ptrdiff_t
      41  ostream_printf (ostream_t stream, const char *format, ...)
      42  {
      43    va_list args;
      44    char *temp_string;
      45    ptrdiff_t ret;
      46  
      47    va_start (args, format);
      48    ret = vasprintf (&temp_string, format, args);
      49    va_end (args);
      50    if (ret >= 0)
      51      {
      52        if (ret > 0)
      53          ostream_write_str (stream, temp_string);
      54        free (temp_string);
      55      }
      56    return ret;
      57  }
      58  
      59  ptrdiff_t
      60  ostream_vprintf (ostream_t stream, const char *format, va_list args)
      61  {
      62    char *temp_string;
      63    ptrdiff_t ret = vasprintf (&temp_string, format, args);
      64    if (ret >= 0)
      65      {
      66        if (ret > 0)
      67          ostream_write_str (stream, temp_string);
      68        free (temp_string);
      69      }
      70    return ret;
      71  }