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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#ifndef D_OPTION_H
#define D_OPTION_H
#include "common.h"
#include <string>
#include <vector>
#include <memory>
#include "prefs.h"
namespace aria2 {
class Option {
private:
std::vector<std::string> table_;
std::vector<unsigned char> use_;
std::shared_ptr<Option> parent_;
public:
Option();
~Option();
Option(const Option& option);
Option& operator=(const Option& option);
void put(PrefPtr pref, const std::string& value);
// Returns true if name is defined. Otherwise returns false. Note
// that even if the value is a empty string, this method returns
// true. If option is not defined in this object and parent_ is not
// NULL, lookup parent_ to check |pref| is defined.
bool defined(PrefPtr pref) const;
// Just like defined(), but this function does not lookup parent_.
bool definedLocal(PrefPtr pref) const;
// Returns true if name is not defined or the value is a empty string.
// Otherwise returns false.
bool blank(PrefPtr pref) const;
// Returns option value for |pref|. If the |pref| is not defined in
// this object, parent_ is looked up.
const std::string& get(PrefPtr pref) const;
int32_t getAsInt(PrefPtr pref) const;
int64_t getAsLLInt(PrefPtr pref) const;
bool getAsBool(PrefPtr pref) const;
double getAsDouble(PrefPtr pref) const;
// Removes |pref| from this object. This function does not modify
// parent_.
void removeLocal(PrefPtr pref);
// Removes |pref| from this object from all option hierarchy.
void remove(PrefPtr pref);
// Removes all option values from this object. This function does
// not modify parent_.
void clear();
// Returns the option value table of this object. It does not
// contain option values in parent_ and so forth.
const std::vector<std::string>& getTable() const { return table_; }
// Copy option values defined in option to this option. parent_ is
// left unmodified for this object.
void merge(const Option& option);
// Sets parent Option object for this object.
void setParent(const std::shared_ptr<Option>& parent);
const std::shared_ptr<Option>& getParent() const;
// Returns true if there is no option stored.
bool emptyLocal() const;
};
} // namespace aria2
#endif // D_OPTION_H
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