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34 lines
845 B
C++
34 lines
845 B
C++
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//
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// HFV.cpp
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// Clock Signal
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//
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// Created by Thomas Harte on 25/08/2019.
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// Copyright © 2019 Thomas Harte. All rights reserved.
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//
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#include "HFV.hpp"
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using namespace Storage::MassStorage;
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HFV::HFV(const std::string &file_name) : file_(file_name) {
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// Is the file a multiple of 512 bytes in size and larger than a floppy disk?
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const auto file_size = file_.stats().st_size;
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if(file_size & 511 || file_size <= 800*1024) throw std::exception();
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// TODO: check filing system for MFS, HFS or HFS+.
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}
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size_t HFV::get_block_size() {
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return 512;
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}
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size_t HFV::get_number_of_blocks() {
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return size_t(file_.stats().st_size) / get_block_size();
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}
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std::vector<uint8_t> HFV::get_block(size_t address) {
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const long file_offset = long(get_block_size() * address);
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file_.seek(file_offset, SEEK_SET);
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return file_.read(get_block_size());
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}
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