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| | /* mailstore.c - mail storage backends
*
* Copyright © 2009 Carl Worth
*
* 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, see http://www.gnu.org/licenses/ .
*/
#include <stdio.h>
#include <stdarg.h>
#include "notmuch-private.h"
typedef struct _notmuch_mailstore {
notmuch_status_t (*constructor) (void **data, va_list args);
FILE *(*open) (struct _notmuch_mailstore *mailstore, const char *filename);
int (*close) (struct _notmuch_mailstore *mailstore, FILE *);
int (*rename) (struct _notmuch_mailstore *mailstore, const char *old_filename,
const char *new_filename);
void *data;
} _notmuch_mailstore;
static notmuch_status_t
_maildir_constructor (void **data, unused (va_list ap))
{
(*data) = NULL;
return NOTMUCH_STATUS_SUCCESS;
}
static FILE *
_maildir_open_function (unused (notmuch_mailstore_t *mailstore),
const char *filename)
{
return fopen (filename, "r");
}
static int
_maildir_close_function (unused (notmuch_mailstore_t *mailstore),
FILE *file)
{
return fclose (file);
}
static int
_maildir_rename_function (unused (notmuch_mailstore_t *mailstore),
const char *old_filename, const char *new_filename)
{
return rename (old_filename, new_filename);
}
/* A mailstore is defined as:
*
* - A function used to "open" a mail message. This takes the
* "filename" for the file and should return a FILE *.
*
* - A function to "rename" a mail message, which is currently only
* used in tags_to_maildir_flags.
*
* - A "constructor" that creates a mailstore object of the requisite
* type. Arguments are passed via va_args.
*
* A mailstore also has a "data" field that can be used to store
* instance-specific information about this mailstore -- for example,
* a CouchDB URL or a path. FIXME: mailstores are all statically
* allocated, so maybe we shouldn't do this.
*/
_notmuch_mailstore
notmuch_mailstore_maildir = { _maildir_constructor,
_maildir_open_function, _maildir_close_function,
_maildir_rename_function,
NULL };
_notmuch_mailstore *
notmuch_mailstore_get_by_name (const char *name)
{
if (strcmp (name, "maildir") == 0)
return ¬much_mailstore_maildir;
return NULL;
}
FILE *
notmuch_mailstore_open (notmuch_mailstore_t *mailstore, const char *filename)
{
return mailstore->open (mailstore, filename);
}
int
notmuch_mailstore_rename (notmuch_mailstore_t *mailstore, const char *old_filename,
const char *new_filename)
{
return mailstore->rename (mailstore, old_filename, new_filename);
}
int
notmuch_mailstore_close (notmuch_mailstore_t *mailstore, FILE *file)
{
return mailstore->close (mailstore, file);
}
notmuch_status_t
notmuch_mailstore_construct (notmuch_mailstore_t *mailstore, ...)
{
va_list va_args;
notmuch_status_t status;
va_start (va_args, mailstore);
status = mailstore->constructor (&mailstore->data, va_args);
va_end (va_args);
return status;
}
|