mirror of https://github.com/djcb/mu.git
235 lines
5.2 KiB
C++
235 lines
5.2 KiB
C++
/*
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** Copyright (C) 2008 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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#include <stdlib.h>
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#include <iostream>
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#include <string.h>
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#include "xapian.h"
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#include "mu-msg-xapian.h"
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struct _MuMsgXapian {
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Xapian::Enquire *_enq;
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Xapian::MSet _matches;
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Xapian::MSet::const_iterator _cursor;
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size_t _batchsize;
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size_t _offset;
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char* _str[MU_MSG_FIELD_ID_NUM];
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};
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MuMsgXapian *
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mu_msg_xapian_new (const Xapian::Enquire& enq, size_t batchsize)
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{
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MuMsgXapian *msg;
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try {
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msg = new MuMsgXapian;
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memset (msg->_str, 0, sizeof(msg->_str));
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msg->_enq = new Xapian::Enquire(enq);
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msg->_matches = msg->_enq->get_mset (0, batchsize);
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if (!msg->_matches.empty())
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msg->_cursor = msg->_matches.begin();
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msg->_batchsize = batchsize;
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msg->_offset = 0;
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return msg;
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} catch (const Xapian::Error &err) {
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g_warning ("%s: caught xapian exception '%s' (%s)",
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__FUNCTION__, err.get_msg().c_str(),
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err.get_error_string());
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} catch (...) {
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g_warning ("%s: caught exception", __FUNCTION__);
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}
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return msg;
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}
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void
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mu_msg_xapian_destroy (MuMsgXapian *msg)
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{
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if (msg) {
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for (int i = 0; i != MU_MSG_FIELD_ID_NUM; ++i)
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g_free (msg->_str[i]);
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delete msg->_enq;
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delete msg;
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}
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}
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gboolean
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mu_msg_xapian_next (MuMsgXapian *msg)
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{
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g_return_val_if_fail (msg, FALSE);
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g_return_val_if_fail (!mu_msg_xapian_is_done(msg), FALSE);
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if (++msg->_cursor == msg->_matches.end())
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return FALSE; /* no more matches */
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for (int i = 0; i != MU_MSG_FIELD_ID_NUM; ++i) {
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g_free (msg->_str[i]);
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msg->_str[i] = NULL;
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}
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return TRUE;
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}
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gboolean
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mu_msg_xapian_is_done (MuMsgXapian *msg)
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{
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if (msg->_matches.empty())
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return TRUE;
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if (msg->_cursor == msg->_matches.end())
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return TRUE;
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return FALSE;
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}
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const gchar*
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mu_msg_xapian_get_field (MuMsgXapian *row, const MuMsgField *field)
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{
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g_return_val_if_fail (row, NULL);
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g_return_val_if_fail (!mu_msg_xapian_is_done(row), NULL);
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g_return_val_if_fail (field, NULL);
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try {
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MuMsgFieldId id = mu_msg_field_id (field);
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if (!row->_str[id]) { /* cache the value */
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Xapian::Document doc (row->_cursor.get_document());
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row->_str[id] = g_strdup (doc.get_value(id).c_str());
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}
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return row->_str[id];
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} catch (const Xapian::Error &err) {
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g_warning ("%s: caught xapian exception '%s' (%s)",
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__FUNCTION__, err.get_msg().c_str(),
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err.get_error_string());
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} catch (...) {
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g_warning ("%s: caught exception", __FUNCTION__);
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}
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return NULL;
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}
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gint64
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mu_msg_xapian_get_field_numeric (MuMsgXapian *row, const MuMsgField *field)
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{
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g_return_val_if_fail (mu_msg_field_is_numeric(field), -1);
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return Xapian::sortable_unserialise(
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mu_msg_xapian_get_field(row, field));
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}
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static const gchar*
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get_field (MuMsgXapian *row, MuMsgFieldId id)
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{
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return mu_msg_xapian_get_field(row, mu_msg_field_from_id (id));
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}
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unsigned int
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mu_msg_xapian_get_id (MuMsgXapian *row)
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{
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g_return_val_if_fail (row, NULL);
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const char *str;
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try {
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return row->_cursor.get_document().get_docid();
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} catch (const Xapian::Error &err) {
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g_warning ("%s: caught xapian exception '%s' (%s)",
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__FUNCTION__, err.get_msg().c_str(),
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err.get_error_string());
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} catch (...) {
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g_warning ("%s: caught exception", __FUNCTION__);
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}
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return 0;
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}
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const char*
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mu_msg_xapian_get_path(MuMsgXapian *row)
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{
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return get_field (row, MU_MSG_FIELD_ID_PATH);
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}
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const char*
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mu_msg_xapian_get_from (MuMsgXapian *row)
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{
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return get_field (row, MU_MSG_FIELD_ID_FROM);
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}
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const char*
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mu_msg_xapian_get_to (MuMsgXapian *row)
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{
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return get_field (row, MU_MSG_FIELD_ID_TO);
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}
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const char*
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mu_msg_xapian_get_cc (MuMsgXapian *row)
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{
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return get_field (row, MU_MSG_FIELD_ID_CC);
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}
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const char*
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mu_msg_xapian_get_subject (MuMsgXapian *row)
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{
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return get_field (row, MU_MSG_FIELD_ID_SUBJECT);
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}
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size_t
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mu_msg_xapian_get_size (MuMsgXapian *row)
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{
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return atoi(get_field (row, MU_MSG_FIELD_ID_SIZE));
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}
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time_t
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mu_msg_xapian_get_date (MuMsgXapian *row)
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{
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return atoi(get_field (row, MU_MSG_FIELD_ID_DATE));
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}
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MuMsgFlags
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mu_msg_xapian_get_flags (MuMsgXapian *row)
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{
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return (MuMsgFlags)atoi(get_field
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(row, MU_MSG_FIELD_ID_FLAGS));
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}
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MuMsgPriority
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mu_msg_xapian_get_priority (MuMsgXapian *row)
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{
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return (MuMsgPriority)atoi(get_field
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(row, MU_MSG_FIELD_ID_PRIORITY));
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}
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