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269520ee69
This is desirable so that we don't have to wake up disk if control file is not changed, and it is not have to be written again. We use the same method (SHA1 hash) to check the content is the same. The limitation is the hash is stored in memory, so we have to write the first time in each session. See GH-382
106 lines
2.4 KiB
C++
106 lines
2.4 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) 2015 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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#include "SHA1IOFile.h"
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#include <cassert>
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namespace aria2 {
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SHA1IOFile::SHA1IOFile() : sha1_(MessageDigest::sha1())
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{
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}
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std::string SHA1IOFile::digest()
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{
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return sha1_->digest();
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}
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size_t SHA1IOFile::onRead(void* ptr, size_t count)
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{
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assert(0);
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return 0;
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}
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size_t SHA1IOFile::onWrite(const void* ptr, size_t count)
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{
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sha1_->update(ptr, count);
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return count;
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}
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char* SHA1IOFile::onGets(char* s, int size)
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{
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assert(0);
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return nullptr;
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}
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int SHA1IOFile::onVprintf(const char* format, va_list va)
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{
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assert(0);
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return -1;
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}
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int SHA1IOFile::onFlush()
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{
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return 0;
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}
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int SHA1IOFile::onClose()
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{
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return 0;
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}
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bool SHA1IOFile::onSupportsColor()
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{
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return false;
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}
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bool SHA1IOFile::isError() const
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{
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return false;
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}
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bool SHA1IOFile::isEOF() const
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{
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return false;
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}
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bool SHA1IOFile::isOpen() const
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{
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return true;
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}
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} // namespace aria2
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