common/replacements/open_memstream.h

   1 /* nbdkit
   2  * Copyright Red Hat
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   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are
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   9  * notice, this list of conditions and the following disclaimer.
  10  *
  11  * * Redistributions in binary form must reproduce the above copyright
  12  * notice, this list of conditions and the following disclaimer in the
  13  * documentation and/or other materials provided with the distribution.
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  15  * * Neither the name of Red Hat nor the names of its contributors may be
  16  * used to endorse or promote products derived from this software without
  17  * specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
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  21  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
  22  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
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  31  */
  32
  33 #ifndef NBDKIT_OPEN_MEMSTREAM_H
  34 #define NBDKIT_OPEN_MEMSTREAM_H
  35
  36 #include <config.h>
  37
  38 #include <stdio.h>
  39
  40 #ifndef HAVE_OPEN_MEMSTREAM
  41 extern FILE *open_memstream (char **ptr, size_t *size);
  42
  43 /* This function is not a straight replacement for open_memstream
  44  * because if you use it you must replace fclose with close_memstream.
  45  *
  46  * Also you cannot access the buffer until you close it, which is fine
  47  * for all uses in nbdkit, but it is not a general replacement.
  48  */
  49 extern int close_memstream (FILE *memstream);
  50 #else
  51 #define close_memstream fclose
  52 #endif
  53
  54 #endif /* NBDKIT_OPEN_MEMSTREAM_H */