mirror of https://github.com/aria2/aria2
90 lines
2.7 KiB
C++
90 lines
2.7 KiB
C++
/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2010 Tatsuhiro Tsujikawa
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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 2 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
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#ifndef D_HASH_FUNC_ENTRY_H
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#define D_HASH_FUNC_ENTRY_H
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#include "common.h"
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#include <string>
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#include <algorithm>
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#include "DlAbortEx.h"
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#include "fmt.h"
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namespace aria2 {
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template<typename HashFunc>
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struct HashFuncEntry {
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typedef HashFunc HashFuncType;
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std::string hashType;
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HashFunc hashFunc;
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HashFuncEntry(const std::string& hashType, const HashFunc& hashFunc):
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hashType(hashType), hashFunc(hashFunc)
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{}
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};
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template<typename HashFunc>
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class FindHashFunc {
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private:
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const std::string& hashType_;
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public:
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FindHashFunc(const std::string& hashType):hashType_(hashType)
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{}
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bool operator()(const HashFuncEntry<HashFunc>& entry) const
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{
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return entry.hashType == hashType_;
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}
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};
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template<class HashFuncEntry>
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const typename HashFuncEntry::HashFuncType& getHashFunc
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(HashFuncEntry* first, HashFuncEntry* last, const std::string& hashType)
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{
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HashFuncEntry* e =
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std::find_if(first, last,
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FindHashFunc<typename HashFuncEntry::HashFuncType>
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(hashType));
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if(e == last) {
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throw DL_ABORT_EX
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(fmt("Hash type %s is not supported.", hashType.c_str()));
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}
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return e->hashFunc;
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}
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} // namespace aria2
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#endif // D_HASH_FUNC_ENTRY_H
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