@c This is part of the GNU Mailutils manual.
@c Copyright (C) 1999-2004, 2006-2007, 2010-2012, 2014 Free Software
@c Foundation, Inc.
@c See file mailutils.texi for copying conditions.
@comment *******************************************************************

@smallexample
@code{#include <mailutils/stream.h>}
@end smallexample

These generic flags are interpreted as appropriate to the specific
streams.

@table @code
@item MU_STREAM_READ
@findex MU_STREAM_READ
The stream is open read only.
@item MU_STREAM_WRITE
@findex MU_STREAM_WRITE
The stream is open write only.
@item MU_STREAM_RDWR
@findex MU_STREAM_RDWR
The stream is open read and write.
@item MU_STREAM_APPEND
@findex MU_STREAM_APPEND
The stream is open in append mode for writing.
@item MU_STREAM_CREAT
@findex MU_STREAM_CREAT
The stream open will create the underlying resource (such as a file)
if it doesn't exist already.
@item MU_STREAM_NONBLOCK
@findex MU_STREAM_NONBLOCK
The stream is set non blocking.
@item MU_STREAM_NO_CHECK
@findex MU_STREAM_NO_CHECK
Stream is destroyed without checking for the owner.
@item MU_STREAM_SEEKABLE
@findex MU_STREAM_SEEKABLE

@item MU_STREAM_NO_CLOSE
@findex MU_STREAM_NO_CLOSE
Stream doesn't close it's underlying resource when it is closed or destroyed.
@item MU_STREAM_ALLOW_LINKS
@findex MU_STREAM_ALLOW_LINKS

@end table

@deftypefun  int mu_file_stream_create (mu_stream_t *@var{stream}, const char *@var{filename}, int @var{flags})
@end deftypefun

@deftypefun  int mu_tcp_stream_create (mu_stream_t *@var{stream}, const char *@var{host}, int @var{port}, int @var{flags})
@end deftypefun

@deftypefun  int mu_mapfile_stream_create (mu_stream_t *@var{stream}, const char *@var{filename}, int @var{flags})
@end deftypefun

@deftypefun  int mu_memory_stream_create (mu_stream_t *@var{stream}, const char *@var{filename}, int @var{flags})
@end deftypefun

@deftypefun  int mu_encoder_stream_create (mu_stream_t *@var{stream}, mu_stream_t @var{iostream}, const char *@var{encoding})
@end deftypefun

@deftypefun  int mu_decoder_stream_create (mu_stream_t *@var{stream}, mu_stream_t @var{iostream}, const char *@var{encoding})
@end deftypefun

@deftypefun  int mu_stdio_stream_create (mu_stream_t *@var{stream}, FILE *@var{stdio}, int @var{flags})
If @code{MU_STREAM_NO_CLOSE} is specified, @code{fclose()} will not be called on
@var{stdio} when the stream is closed.
@end deftypefun

@deftypefun  int mu_prog_stream_create (mu_stream_t *@var{stream}, const char *@var{progname}, int @var{flags})
@end deftypefun

@deftypefun  int mu_filter_prog_stream_create (mu_stream_t *@var{stream}, const char *@var{progname}, mu_stream_t @var{input})
@end deftypefun

@deftypefun void mu_stream_destroy (mu_stream_t *@var{stream}, void *@var{owner})
@end deftypefun

@c
@c ---------
@c

@deftypefun  int mu_stream_open (mu_stream_t @var{stream})
@end deftypefun

@deftypefun  int mu_stream_close (mu_stream_t @var{stream})
@end deftypefun

@deftypefun  int mu_stream_is_seekable (mu_stream_t @var{stream})
@end deftypefun

@deftypefun  int mu_stream_get_fd (mu_stream_t @var{stream}, int *@var{fd})
@end deftypefun

@deftypefun  int mu_stream_get_fd2 (mu_stream_t @var{stream}, int *@var{fd1}, int *@var{fd2})
@end deftypefun

@deftypefun  int mu_stream_read (mu_stream_t @var{stream}, char *@var{buffer}, size_t @var{buflen}, mu_off_t @var{offset}, size_t *@var{writen})
@end deftypefun

@deftypefun  int mu_stream_readline (mu_stream_t @var{stream}, char *@var{buffer}, size_t @var{buflen}, mu_off_t @var{offset}, size_t *@var{writen})
@end deftypefun

@deftypefun  int mu_stream_size (mu_stream_t @var{stream}, mu_off_t *@var{size})
@end deftypefun

@deftypefun n int mu_stream_truncate (mu_stream_t @var{stream}, mu_off_t @var{size})
@end deftypefun

@deftypefun  int mu_stream_write (mu_stream_t @var{stream}, const char *@var{buffer}, size_t @var{buflen}, mu_off_t @var{offset}, size_t *@var{writen})
@end deftypefun

@deftypefun  int mu_stream_setbufsiz (mu_stream_t @var{stream}, size_t @var{size})
@end deftypefun

@deftypefun  int mu_stream_flush (mu_stream_t @var{stream})
@end deftypefun

@c
@c These functions will typically only be useful to implementors of streams.
@c

@deftypefun int mu_stream_create (mu_stream_t *@var{stream}, int @var{flags}, void *@var{owner})
Used to implement a new kind of stream.
@end deftypefun

@deftypefun void* mu_stream_get_owner (mu_stream_t @var{stream})
@end deftypefun

@deftypefun void mu_stream_set_owner (mu_stream_t @var{stream}, void *@var{owner})
@end deftypefun

@deftypefun  int mu_stream_get_flags (mu_stream_t @var{stream}, int *@var{flags})
@end deftypefun

@deftypefun  int mu_stream_set_flags (mu_stream_t @var{stream}, int @var{flags})
@end deftypefun

@deftypefun  int mu_stream_get_property (mu_stream_t @var{stream}, property_t *)
@end deftypefun

@deftypefun  int mu_stream_set_property (mu_stream_t @var{stream}, property_t, void *)
@end deftypefun

@deftypefun int mu_stream_get_state (mu_stream_t @var{stream}, int *@var{state})
@table @code
@item MU_STREAM_STATE_OPEN
Last action was @code{mu_stream_open}.
@item MU_STREAM_STATE_READ
Last action was @code{mu_stream_read} or @code{mu_stream_readline}.
@item MU_STREAM_STATE_WRITE
Last action was @code{mu_stream_write}.
@item MU_STREAM_STATE_CLOSE
Last action was @code{mu_stream_close}.
@end table
@end deftypefun

@deftypefun  int mu_stream_set_destroy (mu_stream_t @var{stream}, void (*@var{_destroy}) (mu_stream_t), void *@var{owner})
@end deftypefun

@deftypefun  int mu_stream_set_open (mu_stream_t @var{stream}, int (*@var{_open}) (mu_stream_t), void *@var{owner})
@end deftypefun

@deftypefun  int mu_stream_set_close (mu_stream_t @var{stream}, int (*@var{_close}) (mu_stream_t), void *@var{owner})
@end deftypefun

@deftypefun  int mu_stream_set_fd (mu_stream_t @var{stream}, int (*@var{_get_fd}) (mu_stream_t, int *, int *), void *@var{owner})
@end deftypefun

@deftypefun  int mu_stream_set_read (mu_stream_t @var{stream}, int (*@var{_read}) (mu_stream_t, char *, size_t, mu_off_t, size_t *), void *@var{owner})
@end deftypefun

@deftypefun  int mu_stream_set_readline (mu_stream_t @var{stream}, int (*@var{_readline}) (mu_stream_t, char *, size_t, mu_off_t, size_t *), void *@var{owner})
@end deftypefun

@deftypefun  int mu_stream_set_size (mu_stream_t @var{stream}, int (*@var{_size}) (mu_stream_t, mu_off_t *), void *@var{owner})
@end deftypefun

@deftypefun  int mu_stream_set_truncate (mu_stream_t @var{stream}, int (*@var{_truncate}) (mu_stream_t, mu_off_t), void *@var{owner})
@end deftypefun

@deftypefun  int mu_stream_set_write (mu_stream_t @var{stream}, int (*@var{_write}) (mu_stream_t, const char *, size_t, mu_off_t, size_t *), void *@var{owner})
@end deftypefun

@deftypefun  int mu_stream_set_flush (mu_stream_t @var{stream}, int (*@var{_flush}) (mu_stream_t), void *@var{owner})
@end deftypefun

@deftypefun  int mu_stream_set_strerror (mu_stream_t @var{stream}, int (*@var{_fp}) (mu_stream_t, char **), void *@var{owner})
@end deftypefun

@deftypefun  int mu_stream_sequential_readline (mu_stream_ts @var{stream}, char *@var{buf}, size_t @var{size}, size_t *@var{nbytes})
@end deftypefun

@deftypefun  int mu_stream_sequential_write (mu_stream_t @var{stream}, char *@var{buf}, size_t @var{size})
@end deftypefun

@deftypefun  int mu_stream_seek (mu_stream_t @var{stream}, mu_off_t @var{off}, int @var{whence})
@end deftypefun

@deftypefun  int mu_stream_strerror (mu_stream_t @var{stream}, char **@var{p})
@end deftypefun

An example using @code{mu_tcp_stream_create()} to make a simple web client:

@smallexample
@include http.inc
@end smallexample