trans.c
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2011-2012, 2014-2017 Free Software Foundation, Inc.
GNU Mailutils 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, or (at your option)
any later version.
GNU Mailutils 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 GNU Mailutils. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include <stdlib.h>
#include <mailutils/types.h>
#include <mailutils/errno.h>
#include <mailutils/list.h>
#include <mailutils/msgset.h>
#include <mailutils/mailbox.h>
#include <mailutils/sys/msgset.h>
int
_mu_msgset_translate_pair (mu_msgset_t mset, int mode,
size_t *pbeg, size_t *pend)
{
if (mset->mbox)
{
int cmd, rc;
size_t n = 1;
size_t beg = *pbeg;
size_t end = *pend;
switch (mode)
{
case MU_MSGSET_NUM:
cmd = MU_MAILBOX_UID_TO_MSGNO;
break;
case MU_MSGSET_UID:
cmd = MU_MAILBOX_MSGNO_TO_UID;
break;
default:
return EINVAL;
}
rc = mu_mailbox_translate (mset->mbox, cmd, beg, &n);
if (rc)
{
if (rc == MU_ERR_NOENT && cmd == MU_MAILBOX_UID_TO_MSGNO)
{
size_t x;
if (end == MU_MSGNO_LAST)
{
rc = mu_mailbox_uidnext (mset->mbox, &x);
if (rc)
return rc;
}
else
x = end;
for (; rc == MU_ERR_NOENT && beg < x; beg++)
rc = mu_mailbox_translate (mset->mbox, cmd, beg, &n);
}
if (rc)
return rc;
}
*pbeg = n;
if (beg == end)
*pend = n;
else if (end != MU_MSGNO_LAST)
{
rc = mu_mailbox_translate (mset->mbox, cmd, end, &n);
if (rc == MU_ERR_NOENT && cmd == MU_MAILBOX_UID_TO_MSGNO)
{
for (; rc == MU_ERR_NOENT && beg < end; end--)
rc = mu_mailbox_translate (mset->mbox, cmd, end, &n);
}
if (rc)
return rc;
*pend = n;
}
}
return 0;
}
int
_mu_msgset_translate_range (mu_msgset_t mset, int mode, struct mu_msgrange *r)
{
return _mu_msgset_translate_pair (mset, mode, &r->msg_beg, &r->msg_end);
}
struct trans_closure
{
mu_msgset_t mset;
int flags;
};
static int
trans_range (void *item, void *data)
{
struct mu_msgrange const *range = item;
struct trans_closure *clos = data;
struct mu_msgrange *copy;
int rc;
copy = malloc (sizeof *copy);
if (!copy)
return errno;
*copy = *range;
rc = _mu_msgset_translate_range (clos->mset, _MU_MSGSET_MODE (clos->flags),
copy);
switch (rc)
{
case 0:
rc = mu_list_append (clos->mset->list, copy);
break;
case MU_ERR_NOENT:
if (clos->flags & MU_MSGSET_IGNORE_TRANSERR)
rc = 0;
/* fallthrough */
default:
free (copy);
}
return rc;
}
int
mu_msgset_translate (mu_msgset_t *dst, mu_msgset_t src, int flags)
{
int rc;
mu_msgset_t tmp;
rc = mu_msgset_create (&tmp, src->mbox, src->flags);
if (rc)
return rc;
tmp->format = src->format;
if (_MU_MSGSET_MODE (flags) == src->flags)
{
rc = mu_msgset_copy (src, tmp);
}
else
{
struct trans_closure tc;
tc.mset = tmp;
tc.flags = flags;
rc = mu_list_foreach (src->list, trans_range, &tc);
}
if (rc)
mu_msgset_destroy (&tmp);
else
*dst = tmp;
return rc;
}