mirror of https://github.com/djcb/mu.git
137 lines
2.9 KiB
C++
137 lines
2.9 KiB
C++
/* -*-mode: c++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8-*- */
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/*
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** Copyright (C) 2008-2011 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
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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, write to the Free Software Foundation,
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** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**
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*/
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#if HAVE_CONFIG_H
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#include "config.h"
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#endif /*HAVE_CONFIG_H*/
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#include <cstring>
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#include <errno.h>
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#include <xapian.h>
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#include "mu-util.h"
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static char*
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xapian_get_metadata (const gchar *xpath, const gchar *key)
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{
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g_return_val_if_fail (xpath, NULL);
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g_return_val_if_fail (key, NULL);
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if (!access(xpath, F_OK) == 0) {
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g_warning ("cannot access %s: %s", xpath, strerror(errno));
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return NULL;
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}
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try {
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Xapian::Database db (xpath);
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const std::string val(db.get_metadata (key));
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return val.empty() ? NULL : g_strdup (val.c_str());
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} MU_XAPIAN_CATCH_BLOCK;
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return NULL;
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}
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char*
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mu_util_xapian_dbversion (const gchar *xpath)
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{
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g_return_val_if_fail (xpath, NULL);
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return xapian_get_metadata (xpath, MU_STORE_VERSION_KEY);
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}
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gboolean
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mu_util_xapian_needs_upgrade (const gchar *xpath)
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{
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char *version;
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gboolean rv;
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g_return_val_if_fail (xpath, TRUE);
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version = mu_util_xapian_dbversion (xpath);
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if (g_strcmp0 (version, MU_XAPIAN_DB_VERSION) == 0)
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rv = FALSE;
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else
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rv = TRUE;
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g_free (version);
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return rv;
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}
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gboolean
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mu_util_xapian_is_empty (const gchar* xpath)
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{
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g_return_val_if_fail (xpath, TRUE);
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/* it's 'empty' (non-existant) */
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if (access(xpath, F_OK) != 0 && errno == ENOENT)
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return TRUE;
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try {
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Xapian::Database db (xpath);
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return db.get_doccount() == 0 ? TRUE : FALSE;
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} MU_XAPIAN_CATCH_BLOCK;
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return FALSE;
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}
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gboolean
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mu_util_xapian_clear (const gchar *xpath)
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{
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g_return_val_if_fail (xpath, FALSE);
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try {
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Xapian::WritableDatabase db
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(xpath, Xapian::DB_CREATE_OR_OVERWRITE);
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db.flush ();
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MU_WRITE_LOG ("emptied database %s", xpath);
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return TRUE;
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} MU_XAPIAN_CATCH_BLOCK;
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return FALSE;
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}
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gboolean
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mu_util_xapian_is_locked (const gchar *xpath)
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{
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g_return_val_if_fail (xpath, FALSE);
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try {
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Xapian::WritableDatabase db (xpath, Xapian::DB_OPEN);
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} catch (const Xapian::DatabaseLockError& xer) {
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return TRUE;
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} catch (const Xapian::Error &xer) {
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g_warning ("%s: error: %s", __FUNCTION__,
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xer.get_msg().c_str());
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}
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return FALSE;
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}
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