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/*
* Copyright (C) 2001-2019 Jacek Sieka, arnetheduck on gmail point com
*
* 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, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include <cstdint>
#include <string>
namespace dcpp {
using std::string;
class SFVReader {
public:
/** @see load */
SFVReader(const string& aFileName) : crc32(0), crcFound(false) { load(aFileName); }
/**
* Search for a CRC32 file in all .sfv files in the directory of fileName.
* Each SFV file has a number of lines containing a filename and its CRC32 value
* in the form:
* filename.ext<whitespaces>xxxxxxxx
* where the x's represent the file's crc32 value. Lines starting with ';' are
* considered comments but we throw away any lines that do not start with
* a file name that resides in the same directory as the .sfv file anyway.
* https://en.wikipedia.org/wiki/Simple_file_verification
*/
void load(const string& fileName) noexcept;
bool hasCRC() const noexcept { return crcFound; }
uint32_t getCRC() const noexcept { return crc32; }
private:
uint32_t crc32;
bool crcFound;
bool tryFile(const string& sfvFile, const string& fileName);
};
} // namespace dcpp
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