buffer (3)

#include <buffer.h>

  buffer* buffer_0;   /* like stdio's stdin */
  buffer* buffer_1;   /* like stdio's stdout */
  buffer* buffer_2;   /* like stdio's stderr */

buffer.h provides a generic buffer interface that can be used for read and write buffering. Buffers must be initialized with buffer_init.

A buffer can only be used for reading or writing at the same time, not both.

Unlike stdio, these write buffers are not flushed automatically at program termination; you must manually call buffer_flush, buffer_putsflush, buffer_putflush or buffer_putnlflush.

See buffer_init(3) for example read buffer code. Here is typical code for printing an error message on stderr:

  #include <buffer.h>

  buffer_puts(buffer_2,"error: got only ");
  buffer_putulong(buffer_2,got);
  buffer_puts(buffer_2," bytes, but expected at least ");
  buffer_putulong(buffer_2,expected);
  buffer_putsflush(buffer_2," bytes!");

buffer_init(3), buffer_put(3), buffer_get(3), buffer_flush(3)