lib-storage/index/index-sync.c

	index-sync.c revision d67f54632110cfb6aafe2d7cd1f99b031c0b208a
/* Copyright (C) 2002 Timo Sirainen */

#include "lib.h"
#include "index-storage.h"

int index_storage_sync(struct mailbox *box, enum mailbox_sync_flags flags)
{
    struct index_mailbox *ibox = (struct index_mailbox *)box;
    struct mail_index_view_sync_ctx *ctx;
        struct mail_full_flags full_flags;
    const struct mail_index_record *rec;
    struct mail_index_sync_rec sync;
    struct mail_storage_callbacks *sc;
    const uint32_t *expunges;
    size_t i, expunges_count;
    void *sc_context;
    enum mail_index_sync_type sync_mask;
    uint32_t seq, messages_count, recent_count;
    int ret, appends;

    sync_mask = MAIL_INDEX_SYNC_MASK_ALL;
    if ((flags & MAILBOX_SYNC_FLAG_NO_EXPUNGES) != 0)
        sync_mask &= ~MAIL_INDEX_SYNC_TYPE_EXPUNGE;

    if (mail_index_view_sync_begin(ibox->view, sync_mask, &ctx) < 0) {
                mail_storage_set_index_error(ibox);
        return -1;
    }

    if ((flags & MAILBOX_SYNC_FLAG_NO_EXPUNGES) != 0) {
        expunges_count = 0;
        expunges = NULL;
    } else {
        expunges =
            mail_index_view_sync_get_expunges(ctx, &expunges_count);
    }

    sc = ibox->storage->callbacks;
    sc_context = ibox->storage->callback_context;
    appends = FALSE;

    messages_count = mail_index_view_get_message_count(ibox->view);

    memset(&full_flags, 0, sizeof(full_flags));
    while ((ret = mail_index_view_sync_next(ctx, &sync)) > 0) {
        switch (sync.type) {
        case MAIL_INDEX_SYNC_TYPE_APPEND:
            appends = TRUE;
            break;
        case MAIL_INDEX_SYNC_TYPE_EXPUNGE:
            /* later */
            break;
        case MAIL_INDEX_SYNC_TYPE_FLAGS:
            if (sc->update_flags == NULL)
                break;

            if (sync.seq2 > messages_count)
                sync.seq2 = messages_count;

            /* FIXME: hide the flag updates for expunged messages */
            for (seq = sync.seq1; seq <= sync.seq2; seq++) {
                if (mail_index_lookup(ibox->view,
                              seq, &rec) < 0) {
                    ret = -1;
                    break;
                }
                full_flags.flags = rec->flags; // FIXME
                sc->update_flags(&ibox->box, seq,
                         &full_flags, sc_context);
            }
            break;
        }
    }

    if (ret < 0)
        mail_storage_set_index_error(ibox);

    if (sc->expunge != NULL) {
        for (i = expunges_count*2; i > 0; i -= 2) {
            seq = expunges[i-1];
            if (seq > messages_count)
                seq = messages_count;
            for (; seq >= expunges[i-2]; seq--)
                sc->expunge(&ibox->box, seq, sc_context);
        }
    }

    mail_index_view_sync_end(ctx);

    if (appends) {
        messages_count = mail_index_view_get_message_count(ibox->view);
        recent_count = ibox->get_recent_count(ibox);
        sc->new_messages(&ibox->box, messages_count, recent_count,
                 sc_context);
    }

    mail_index_view_unlock(ibox->view);
    return ret;
}