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3458e3c89c
This is a thin wrapper around the Xapian metadata API. The job of this layer is to keep the config key value pairs from colliding with other metadata by transparently prefixing the keys, along with the usual glue to provide a C interface. The split of _get_config into two functions is to allow returning of the return value with different memory ownership semantics.
87 lines
2.5 KiB
C++
87 lines
2.5 KiB
C++
/* config.cc - API for database metadata
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*
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* Copyright © 2016 David Bremner
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see http://www.gnu.org/licenses/ .
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*
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* Author: David Bremner <david@tethera.net>
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*/
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#include "notmuch.h"
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#include "notmuch-private.h"
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#include "database-private.h"
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static const std::string CONFIG_PREFIX = "C";
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notmuch_status_t
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notmuch_database_set_config (notmuch_database_t *notmuch,
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const char *key,
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const char *value)
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{
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notmuch_status_t status;
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Xapian::WritableDatabase *db;
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status = _notmuch_database_ensure_writable (notmuch);
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if (status)
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return status;
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try {
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db = static_cast <Xapian::WritableDatabase *> (notmuch->xapian_db);
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db->set_metadata (CONFIG_PREFIX + key, value);
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} catch (const Xapian::Error &error) {
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status = NOTMUCH_STATUS_XAPIAN_EXCEPTION;
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notmuch->exception_reported = TRUE;
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_notmuch_database_log (notmuch, "Error: A Xapian exception occurred setting metadata: %s\n",
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error.get_msg().c_str());
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}
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return NOTMUCH_STATUS_SUCCESS;
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}
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static notmuch_status_t
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_metadata_value (notmuch_database_t *notmuch,
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const char *key,
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std::string &value)
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{
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notmuch_status_t status = NOTMUCH_STATUS_SUCCESS;
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try {
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value = notmuch->xapian_db->get_metadata (CONFIG_PREFIX + key);
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} catch (const Xapian::Error &error) {
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status = NOTMUCH_STATUS_XAPIAN_EXCEPTION;
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notmuch->exception_reported = TRUE;
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_notmuch_database_log (notmuch, "Error: A Xapian exception occurred getting metadata: %s\n",
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error.get_msg().c_str());
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}
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return status;
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}
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notmuch_status_t
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notmuch_database_get_config (notmuch_database_t *notmuch,
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const char *key,
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char **value)
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{
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std::string strval;
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notmuch_status_t status;
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if (! value)
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return NOTMUCH_STATUS_NULL_POINTER;
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status = _metadata_value (notmuch, key, strval);
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if (status)
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return status;
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*value = strdup (strval.c_str ());
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return NOTMUCH_STATUS_SUCCESS;
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}
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