mu/src/mu-msg.h

302 lines
8.5 KiB
C

/*
** Copyright (C) 2010 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 3 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software Foundation,
** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**
*/
#ifndef __MU_MSG_H__
#define __MU_MSG_H__
#include "mu-msg-flags.h"
#include "mu-msg-fields.h"
#include "mu-msg-status.h"
#include "mu-msg-prio.h"
G_BEGIN_DECLS
struct _MuMsg;
typedef struct _MuMsg MuMsg;
/**
* initialize the message parsing system; this function must be called
* before doing any message parsing (ie., any of the other
* mu_msg functions). when done with the message parsing system,
* call mu_msg_uninit. Note: calling this function on an already
* initialized system has no effect
*/
void mu_msg_init (void);
/**
* uninitialize the messge parsing system that has previously been
* initialized with mu_msg_init. not calling mu_msg_uninit after
* mu_msg_init has been called will lead to memory leakage. Note:
* calling mu_msg_uninit on an uninitialized system has no
* effect
*/
void mu_msg_uninit (void);
/**
* create a new MuMsg* instance which parses a message and provides
* read access to its properties; call mu_msg_destroy when done with it.
*
* @param path full path to an email message file
*
* @param mdir the maildir for this message; ie, if the path is
* ~/Maildir/foo/bar/cur/msg, the maildir would be foo/bar; you can
* pass NULL for this parameter, in which case some maildir-specific
* information is not available.
*
* @return a new MuMsg instance or NULL in case of error
*/
MuMsg* mu_msg_new (const char* filepath,
const char *maildir);
/**
* destroy a MuMsg* instance; call this function when done with
* a MuMsg
*
* @param msg a MuMsg* instance or NULL
*/
void mu_msg_destroy (MuMsg *msg);
/**
* get the plain text body of this message
*
* @param msg a valid MuMsg* instance
*
* @return the plain text body or NULL in case of error or if there is no
* such body. the returned string should *not* be modified or freed.
* The returned data is in UTF8 or NULL.
*/
const char* mu_msg_get_body_text (MuMsg *msg);
/**
* get the html body of this message
*
* @param msg a valid MuMsg* instance
*
* @return the html body or NULL in case of error or if there is no
* such body. the returned string should *not* be modified or freed.
*/
const char* mu_msg_get_body_html (MuMsg *msg);
/**
* get a summary of the body of this message; a summary takes up to
* the first @max_lines from the message, and replaces newlines
* etc. with single whitespace characters. This only works if there's
* a text-body for the message
*
* @param msg a valid MuMsg* instance
* @param max_lines the max number of lines to summarize
*
* @return the summary of the message or NULL in case of error or if
* there is no such body. the returned string should *not* be modified
* or freed. When called multiple times, the function will always
* return the same summary, regardless of a different max_lines value.
*/
const char* mu_msg_get_summary (MuMsg *msg, size_t max_lines);
/**
* save a specific attachment to some targetdir
*
* @param msg a valid MuMsg instance
* @param wanted_idx index of the attachment you want to save
* @param targetdir filesystem directory to save the attachment
* @param overwrite existing files?
*
* @return TRUE if saving succeeded, FALSE otherwise
*/
gboolean
mu_msg_mime_part_save (MuMsg *msg, int wanted_idx,
const char *targetdir, gboolean overwrite);
/**
* get the sender (From:) of this message
*
* @param msg a valid MuMsg* instance
*
* @return the sender of this Message or NULL in case of error or if there
* is no sender. the returned string should *not* be modified or freed.
*/
const char* mu_msg_get_from (MuMsg *msg);
/**
* get the recipients (To:) of this message
*
* @param msg a valid MuMsg* instance
*
* @return the sender of this Message or NULL in case of error or if there
* are no recipients. the returned string should *not* be modified or freed.
*/
const char* mu_msg_get_to (MuMsg *msg);
/**
* get the carbon-copy recipients (Cc:) of this message
*
* @param msg a valid MuMsg* instance
*
* @return the Cc: recipients of this Message or NULL in case of error or if
* there are no such recipients. the returned string should *not* be modified
* or freed.
*/
const char* mu_msg_get_cc (MuMsg *msg);
/**
* get the file system path of this message
*
* @param msg a valid MuMsg* instance
*
* @return the path of this Message or NULL in case of error.
* the returned string should *not* be modified or freed.
*/
const char* mu_msg_get_path (MuMsg *msg);
/**
* get the maildir this message lives in; ie, if the path is
* ~/Maildir/foo/bar/cur/msg, the maildir would be foo/bar
*
* @param msg a valid MuMsg* instance
*
* @return the maildir requested or NULL in case of error. The returned
* string should *not* be modified or freed.
*/
const char* mu_msg_get_maildir (MuMsg *msg);
/**
* get the subject of this message
*
* @param msg a valid MuMsg* instance
*
* @return the subject of this Message or NULL in case of error or if there
* is no subject. the returned string should *not* be modified or freed.
*/
const char* mu_msg_get_subject (MuMsg *msg);
/**
* get the Message-Id of this message
*
* @param msg a valid MuMsg* instance
*
* @return the Message-Id of this Message (without the enclosing <>)
* or NULL in case of error or if there is none. the returned string
* should *not* be modified or freed.
*/
const char* mu_msg_get_msgid (MuMsg *msg);
/**
* get any arbitrary header from this message
*
* @param msg a valid MuMsg* instance
* @header the header requested
*
* @return the header requested or NULL in case of error or if there
* is no such header. the returned string should *not* be modified or freed.
*/
const char* mu_msg_get_header (MuMsg *msg,
const char* header);
/**
* get the message date/time (the Date: field) as time_t, using UTC
*
* @param msg a valid MuMsg* instance
*
* @return message date/time or 0 in case of error or if there
* is no such header.
*/
time_t mu_msg_get_date (MuMsg *msg);
/**
* get the flags for this message
*
* @param msg valid MuMsg* instance
*
* @return the fileflags as logically OR'd #Mu MsgFlags or 0 if
* there are none.
*/
MuMsgFlags mu_msg_get_flags (MuMsg *msg);
/**
* get the file size in bytes of this message
*
* @param msg a valid MuMsg* instance
*
* @return the filesize
*/
size_t mu_msg_get_size (MuMsg *msg);
/**
* get some field value as string
*
* @param msg a valid MuMsg instance
* @param field the field to retrieve; it must be a string-typed field
*
* @return a string that should not be freed
*/
const char* mu_msg_get_field_string (MuMsg *msg,
const MuMsgField* field);
/**
* get some field value as string
*
* @param msg a valid MuMsg instance
* @param field the field to retrieve; it must be a numeric field
*
* @return a string that should not be freed
*/
gint64 mu_msg_get_field_numeric (MuMsg *msg,
const MuMsgField* field);
/**
* get the message priority for this message (MU_MSG_PRIO_LOW,
* MU_MSG_PRIO_NORMAL or MU_MSG_PRIO_HIGH) the X-Priority,
* X-MSMailPriority, Importance and Precedence header are checked, in
* that order. if no known or explicit priority is set,
* MU_MSG_PRIO_NORMAL is assumed
*
* @param msg a valid MuMsg* instance
*
* @return the message priority (!= 0) or 0 in case of error
*/
MuMsgPrio mu_msg_get_prio (MuMsg *msg);
/**
* get the timestamp (mtime) for the file containing this message
*
* @param msg a valid MuMsg* instance
*
* @return the timestamp or 0 in case of error
*/
time_t mu_msg_get_timestamp (MuMsg *msg);
G_END_DECLS
#endif /*__MU_MSG_H__*/