mirror of https://github.com/aria2/aria2
87 lines
2.8 KiB
C
87 lines
2.8 KiB
C
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/* <!-- 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) 2012 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_GENERIC_PARSER_H
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#define D_GENERIC_PARSER_H
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#include "common.h"
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#include "SharedHandle.h"
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namespace aria2 {
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template<typename Parser, typename ParserStateMachine>
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class GenericParser {
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public:
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GenericParser()
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: parser_(&psm_)
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{}
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~GenericParser()
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{}
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// Parses |size| bytes of data |data| and returns the number of
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// bytes processed. On error, one of the negative error codes is
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// returned.
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ssize_t parseUpdate(const char* data, size_t size)
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{
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return parser_.parseUpdate(data, size);
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}
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// Parses |size| bytes of data |data| and returns result. On error,
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// null value is returned. On success, the |error| will be the
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// number of bytes processed (>= 0). On error, it will be one of the
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// negative error code. This function also resets underlying parser
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// facility and make it ready to reuse.
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typename ParserStateMachine::ResultType
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parseFinal(const char* data, size_t size, ssize_t& error)
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{
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typename ParserStateMachine::ResultType res;
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error = parser_.parseFinal(data, size);
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if(error < 0) {
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res = ParserStateMachine::noResult;
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} else {
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res = psm_.getResult();
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}
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parser_.reset();
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return res;
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}
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private:
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ParserStateMachine psm_;
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Parser parser_;
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};
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} // namespace aria2
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#endif // D_GENERIC_PARSER_H
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