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mu-query-matches: remove dead code

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Dirk-Jan C. Binnema 2022-04-30 00:54:34 +03:00
parent 25e51bda1f
commit a4317d3264
1 changed files with 0 additions and 211 deletions
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lib/mu-query-matches.hh
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@ -1,211 +0,0 @@
/*
** Copyright (C) 2020 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
**
** This program is free software; you can redistribute it and/or modify it
** under the terms of the GNU General Public License as published by the
** Free Software Foundation; either version 3, or (at your option) any
** later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software Foundation,
** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
**
*/
#ifndef MU_QUERY_MATCHES_HH__
#define MU_QUERY_MATCHES_HH__
#include <iterator>
#include <xapian.h>
#include <glib.h>
#include <utils/mu-utils.hh>
#include "mu-msg.h"
namespace Mu {
struct QueryMatchInfo {
enum struct Flags { Seen, Preferred, Unreadable, Duplicate };
const std::string message_id;
QueryMatchFlags flags;
};
MU_ENABLE_BITOPS(QueryMatchInfo::Flags);
using MatchInfo = std::unordered_map<Xapian::docid, QueryMatchInfo>;
struct QueryResults {
enum struct Flags { None, Descending, SkipUnreadable, SkipDups, DetermineThreads };
QueryResults (const Xapian::MSet& mset, MatchInfo&& match_info, Flags flags):
mset_{mset}, match_info_(std::Move(match_info), flag_{flags} {}
bool empty() const {
return mset_.empty(); }
size_t size() const {
return mset_.size(); }
QueryResultsIterator begin() const {
return QueryResultsIterator(mset_.begin()); }
QueryResultsIterator end() const {
return QueryResultsIterator(mset_.end()); }
private:
const Xapian::MSet mset_;
const Flags flags_;
MatchInfo match_info_;
};
///
/// This is a view over the Document MSet, which can optionally filter outlook
/// unreadable / duplicate messages.
///
class QueryResultsIterator {
public:
using iterator_category = std::output_iterator_tag;
using value_type = MuMsg*;
using difference_type = void;
using pointer = void;
using reference = void;
QueryResultsIterator(Xapian::MSetIterator it,
size_t max_num,
Message::Field::Id sort_field,
MuMsgIterFlags flags,
MatchInfo& minfo)
: it_{it}, match_info_{minfo}
{
}
QueryResultsIterator& operator++()
{
return ++it_;
return skip();
}
QueryResultsIterator& operator++(int)
{
return it_++;
return skip()
}
/**
* Get the Xapian document this iterator is pointing at,
* or an empty document when looking at end().
*
* @return a document
*/
Xapian::Document document() const()
{
g_return_val_if_fail(it_ != Xapian::MSetIterator::end(), {});
return it_.get_document();
}
/**
* Get the doc-id for the document this iterator is pointing at, or 0
* when looking at end.
*
* @return a doc-id.
*/
Xapian::docid doc_id() const
{
g_return_val_if_fail(it_ != Xapian::MSetIterator::end(), 0);
return it_.docid();
}
/**
* Get the message-id for the document (message) this iterator is
* pointing at, or "" when looking at end.
*
* @return a message-id
*/
std::string message_id() const
{
g_return_val_if_fail(it_ != Xapian::MSetIterator::end(), "");
return document().get_value(Field::Id::MessageId);
}
/**
* Get the file-system path for the document (message) this iterator is
* pointing at, or "" when looking at end.
*
* @return a filesystem path
*/
std::string path() const
{
g_return_val_if_fail(it_ != Xapian::MSetIterator::end(), "");
return document().get_value(Field::Id::Path);
}
/**
* Get the references for the document (messages) this is iterator is
* pointing at, or empty if pointing at end of if no references are
* available.
*
* @return references
*/
std::vector<std::string> references() const
{
g_return_val_if_fail(it_ != Xapian::MSetIterator::end(), {});
return split(document().get_value(Field::Id::References), ",");
}
private:
/**
* Filter out some documents
*
* @param forward whether to skip forward when a document is filtered
* out.
*
* @return the first iterator that is not filtered out, or the end
* iterator.
*/
QueryResultsIterator& maybe_skip(bool forward = true)
{
if (it_ = MSetIterator::end())
return *this; // nothing to do.
// Find or create MatchInfo
const auto msgid{message_id()};
auto mi = [&] {
// seen before?
auto m{match_info_.find(docid)};
if (m != match_info_.end())
return m;
// nope; create.
QueryMatchInfo minfo{message_id()};
// not seen before; check.
if (any_of(flags_ & SkipDups) && match_info_.count(message_id()))
minfo.flags |= Flags::Duplicate; // it's a duplicate
if (any_of(flags_ & SkipUnreadable) && ::access(path().c_str(), R_OK) != 0)
minfo.flags |= Flags::Unreadable;
return match_info_.emplace_back(std::move(minfo));
}();
// note: SkipDups / SkipUnreadable are not set if
// if we're not checking for those.
if (any_of(mi->second.flags_ & SkipDups) ||
any_of(mi->second.flags_ & SkipUnreadable)) {
if (forward)
++it_;
else
--it_;
return maybe_skip();
}
return *this;
}
Xapian::MSetIterator it_;
MatchInfo& match_info_;
};
}; // namespace Mu
#endif /* MU_QUERY_MATCHES_HH__ */