mirror of https://github.com/djcb/mu.git
136 lines
4.5 KiB
C
136 lines
4.5 KiB
C
/*
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** Copyright (C) 2008-2017 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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#ifndef __MU_QUERY_H__
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#define __MU_QUERY_H__
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#include <glib.h>
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#include <mu-store.hh>
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#include <mu-msg-iter.h>
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#include <utils/mu-util.h>
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G_BEGIN_DECLS
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struct _MuQuery;
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typedef struct _MuQuery MuQuery;
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/**
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* create a new MuQuery instance.
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*
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* @param store a MuStore object
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* @param err receives error information (if there is any); if
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* function returns non-NULL, err will _not_be set. err can be NULL
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* possible errors (err->code) are MU_ERROR_XAPIAN_DIR and
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* MU_ERROR_XAPIAN_NOT_UPTODATE
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*
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* @return a new MuQuery instance, or NULL in case of error.
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* when the instance is no longer needed, use mu_query_destroy
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* to free it
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*/
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MuQuery* mu_query_new (MuStore *store, GError **err)
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G_GNUC_MALLOC G_GNUC_WARN_UNUSED_RESULT;
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/**
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* destroy the MuQuery instance
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*
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* @param self a MuQuery instance, or NULL
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*/
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void mu_query_destroy (MuQuery *self);
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/**
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* get a version string for the database
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*
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* @param store a valid MuQuery
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*
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* @return the version string (free with g_free), or NULL in case of error
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*/
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char* mu_query_version (MuQuery *store)
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G_GNUC_MALLOC G_GNUC_WARN_UNUSED_RESULT;
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typedef enum {
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MU_QUERY_FLAG_NONE = 0 << 0, /**< no flags */
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MU_QUERY_FLAG_DESCENDING = 1 << 0, /**< sort z->a */
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MU_QUERY_FLAG_SKIP_UNREADABLE = 1 << 1, /**< skip unreadable msgs */
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MU_QUERY_FLAG_SKIP_DUPS = 1 << 2, /**< skip duplicate msgs */
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MU_QUERY_FLAG_INCLUDE_RELATED = 1 << 3, /**< include related msgs */
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MU_QUERY_FLAG_THREADS = 1 << 4, /**< calculate threading info */
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MU_QUERY_FLAG_RAW = 1 << 5 /**< don't parse the query */
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} MuQueryFlags;
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/**
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* run a Xapian query; for the syntax, please refer to the mu-find
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* manpage, or http://xapian.org/docs/queryparser.html
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*
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* @param self a valid MuQuery instance
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* @param expr the search expression; use "" to match all messages
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* @param sortfield the field id to sort by or MU_MSG_FIELD_ID_NONE if
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* sorting is not desired
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* @param maxnum maximum number of search results to return, or <= 0 for
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* unlimited
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* @param flags bitwise OR'd flags to influence the query (see MuQueryFlags)
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* @param err receives error information (if there is any); if
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* function returns non-NULL, err will _not_be set. err can be NULL
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* possible error (err->code) is MU_ERROR_QUERY,
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*
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* @return a MuMsgIter instance you can iterate over, or NULL in
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* case of error
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*/
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MuMsgIter* mu_query_run (MuQuery *self, const char* expr,
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MuMsgFieldId sortfieldid, int maxnum,
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MuQueryFlags flags, GError **err)
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G_GNUC_MALLOC G_GNUC_WARN_UNUSED_RESULT;
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/**
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* get Xapian's internal string representation of the query
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*
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* @param self a MuQuery instance
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* @param searchexpr a xapian search expression
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* @param warn print warnings to stderr
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* @param err receives error information (if there is any); if
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* function returns non-NULL, err will _not_be set. err can be NULL
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*
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* @return the string representation of the xapian query, or NULL in case of
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* error; free the returned value with g_free
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*/
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char* mu_query_internal (MuQuery *self, const char *searchexpr,
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gboolean warn, GError **err)
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G_GNUC_MALLOC G_GNUC_WARN_UNUSED_RESULT;
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/**
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* get Xapian's internal string representation of the query
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*
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* @param self a MuQuery instance
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* @param searchexpr a xapian search expression
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* @param err receives error information (if there is any); if
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* function returns non-NULL, err will _not_be set. err can be NULL
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*
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* @return the string representation of the xapian query, or NULL in case of
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* error; free the returned value with g_free
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*/
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char* mu_query_internal_xapian (MuQuery *self, const char* searchexpr,
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GError **err)
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G_GNUC_MALLOC G_GNUC_WARN_UNUSED_RESULT;
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G_END_DECLS
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#endif /*__MU_QUERY_H__*/
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