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// -*- mode: c++; tab-width: 4; indent-tabs-mode: t -*-
/* @file
* @author Enrico Zini (enrico) <enrico@enricozini.org>
*/
/*
* libpkg Debtags data provider
*
* Copyright (C) 2003-2007 Enrico Zini <enrico@debian.org>
*
* 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 2 of the License, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef EPT_DEBTAGS_DEBTAGS_H
#define EPT_DEBTAGS_DEBTAGS_H
#include <ept/debtags/coll/fast.h>
#include <string>
namespace ept {
namespace debtags {
/**
* Access the on-disk Debtags tag database.
*
* The database is normally found in /var/lib/debtags.
*
* Tags and Facets are returned as std::strings. The objects follow
* the flyweight pattern and access the data contained in the Vocabulary
* instantiated inside Debtags.
*
* It is possible to get a reference to the Vocabulary object using the
* vocabulary() method.
*/
class Debtags : public coll::Fast
{
protected:
// User rc directory to store patches
std::string rcdir;
// Last modification timestamp of the index
time_t m_timestamp;
void load(const std::string& pathname);
public:
typedef ept::debtags::coll::Fast coll_type;
typedef std::pair< std::string, std::set<std::string> > value_type;
/// Create a Debtags object, reading the system database
Debtags();
/// Create a Debtags object, reading the given database file
Debtags(const std::string& pathname);
~Debtags() {}
/// Get the timestamp of when the index was last updated
time_t timestamp() const { return m_timestamp; }
/// Return true if this data source has data, false if it's empty
bool hasData() const { return m_timestamp != 0; }
coll_type& tagdb() { return *this; }
const coll_type& tagdb() const { return *this; }
/**
* Return the default pathname for the debtags tags.
*
* This returns /var/lib/debtags/package-tags, unless it has been
* overridden by setting $DEBTAGS_TAGS
*/
static std::string pathname();
};
}
}
// vim:set ts=4 sw=4:
#endif
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