@c This is part of the GNU Mailutils manual.
@c Copyright (C) 1999-2004, 2006-2007, 2010-2012, 2014-2016 Free
@c Software Foundation, Inc.
@c See file mailutils.texi for copying conditions.
@comment *******************************************************************

@smallexample
@code{/* Prefix @emph{mu_message_} is reserved. */}
@code{#include <mailutils/message.h>}

@end smallexample

The @code{mu_message_t} object is a convenient way to manipulate messages. It
encapsulates the @code{envelope_t}, the @code{header_t} and the @code{body_t}.

@smallexample
@group
    mailbox_t
    ----------                   mu_message_t
   (message[1])        +------>+--------------------+
    ----------         |       |  mu_envelope_t     |
   (message[2])        |       |--------------------|
    ----------         |       |  mu_header_t       |
   (message[3])--------+       |--------------------|
    ----------                 |  mu_body_t         |
   (message[n])                |--------------------|
    ----------                 |  mu_attribute_t    |
                               |--------------------|
                               |  mu_stream_t       |
                               +--------------------+
@end group
@end smallexample

@c
@c Basic.
@c

@deftypefun void mu_message_create (mu_message_t *@var{msg}, void *@var{owner})
@end deftypefun

@deftypefun void mu_message_destroy (mu_message_t *@var{msg}, void *@var{owner})
The resources allocate for @var{msg} are freed.
@end deftypefun

@deftypefun  int mu_message_create_copy (mu_message_t *@var{to}, mu_message_t *@var{from})
@end deftypefun

@deftypefun  void* mu_message_get_owner (mu_message_t @var{msg})
@end deftypefun

@deftypefun  int mu_message_is_modified (mu_message_t @var{msg})
@end deftypefun

@deftypefun  int mu_message_clear_modified (mu_message_t @var{msg})
@end deftypefun

@deftypefun  int mu_message_get_mailbox (mu_message_t @var{msg}, mu_mailbox_t *@var{mbox})
@end deftypefun

@deftypefun  int mu_message_set_mailbox (mu_message_t @var{msg}, mu_mailbox_t @var{mbox}, void *@var{owner})
@end deftypefun

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

@deftypefun  int mu_message_ref (mu_message_t @var{msg})
@end deftypefun

@deftypefun  int mu_message_get_envelope (mu_message_t @var{msg}, mu_envelope_t *@var{envelope})
@end deftypefun

@deftypefun  int mu_message_set_envelope (mu_message_t @var{msg}, mu_envelope_t @var{envelope}, void *@var{owner})
@end deftypefun

@deftypefun  int mu_message_get_header (mu_message_t @var{msg}, mu_header_t *@var{header})
Retrieve @var{msg} header.
@end deftypefun

@deftypefun  int mu_message_set_header (mu_message_t @var{msg}, mu_header_t @var{header}, void *@var{owner})
@end deftypefun

@deftypefun  int mu_message_get_body (mu_message_t @var{msg}, mu_body_t *@var{body})
@end deftypefun

@deftypefun  int mu_message_set_body (mu_message_t @var{msg}, mu_body_t @var{body}, void *@var{owner})
@end deftypefun

@deftypefun  int mu_message_get_stream (mu_message_t @var{msg}, mu_stream_t *@var{stream})
@end deftypefun

@deftypefun  int mu_message_set_stream (mu_message_t @var{msg}, mu_stream_t @var{stream}, void *@var{owner})
@end deftypefun

@deftypefun  int mu_message_get_attribute (mu_message_t @var{msg}, mu_attribute_t *@var{attribute})
@end deftypefun

@deftypefun  int mu_message_set_attribute (mu_message_t @var{msg}, mu_attribute_t @var{attribute}, void *@var{owner})
@end deftypefun

@deftypefun  int mu_message_get_observable (mu_message_t @var{msg}, mu_observable_t *@var{observable})
@end deftypefun

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

@deftypefun  int mu_message_is_multipart (mu_message_t @var{msg}, int *@var{multi})
Set *@var{multi} to non-zero value if @var{msg} is multi-part.
@end deftypefun

@deftypefun  int mu_message_set_is_multipart (mu_message_t @var{msg}, int (*@var{_is_multipart}) (mu_message_t, int *), void *);
@end deftypefun

@deftypefun  int mu_message_size (mu_message_t @var{msg}, size_t *@var{size})
@end deftypefun

@deftypefun  int mu_message_set_size (mu_message_t @var{msg}, int (*@var{_size}) (mu_message_t, size_t *), void *@var{owner})
@end deftypefun

@deftypefun  int mu_message_lines (mu_message_t @var{msg}, size_t *@var{size})
@end deftypefun

@deftypefun  int mu_message_set_lines (mu_message_t @var{msg}, int (*@var{_lines}) (mu_message_t, size_t *), void *@var{owner})
@end deftypefun

@deftypefun  int mu_message_get_num_parts (mu_message_t @var{msg}, size_t *@var{nparts})
@end deftypefun

@deftypefun  int mu_message_set_get_num_parts (mu_message_t @var{msg}, int (*@var{_get_num_parts}) (mu_message_t, size_t *), void *@var{owner})
@end deftypefun

@deftypefun  int mu_message_get_part (mu_message_t @var{msg}, size_t @var{part}, mu_message_t *@var{msg})
@end deftypefun

@deftypefun  int mu_message_set_get_part (mu_message_t @var{msg}, int (*@var{_get_part}) (mu_message_t, size_t, mu_message_t *), void *@var{owner})
@end deftypefun

@deftypefun  int mu_message_get_uidl (mu_message_t @var{msg}, char *@var{buffer}, size_t @var{buflen}, size_t *@var{writen})
@end deftypefun

@deftypefun  int mu_message_set_uidl (mu_message_t @var{msg}, int (*@var{_get_uidl}) (mu_message_t, char *, size_t, size_t *), void *@var{owner})
@end deftypefun

@deftypefun  int mu_message_get_uid (mu_message_t @var{msg}, size_t *@var{uid})
@end deftypefun

@deftypefun  int mu_message_set_uid (mu_message_t @var{msg}, int (*@var{_get_uid}) (mu_message_t, size_t *), void *@var{owner})
@end deftypefun

@deftypefun  int mu_message_create_attachment (const char *@var{content_type}, const char *@var{encoding}, const char *@var{filename}, mu_message_t *@var{newmsg})
@end deftypefun

@deftypefun  int mu_message_save_attachment (mu_message_t @var{msg}, const char *@var{filename}, void **@var{data})
@end deftypefun

@deftypefun  int mu_message_encapsulate (mu_message_t @var{msg}, mu_message_t *@var{newmsg}, void **@var{data})
@end deftypefun

@deftypefun  int mu_message_unencapsulate (mu_message_t @var{msg}, mu_message_t *@var{newmsg}, void **@var{data});
@end deftypefun

@deftypefun  int mu_message_get_attachment_name (mu_message_t @var{msg}, char *@var{name}, size_t @var{bufsize}, size_t *@var{size});
@end deftypefun

@deftypefun  int mu_message_aget_attachment_name (mu_message_t @var{msg}, char **@var{name});
@end deftypefun

@deftypefun  int mu_message_save_to_mailbox (mu_message_t @var{msg}, mu_ticket_t @var{ticket}, mu_debug_t @var{debug}, const char *@var{toname});
@end deftypefun