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57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
//
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// Parser.cpp
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// Clock Signal
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//
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// Created by Thomas Harte on 24/09/2017.
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// Copyright 2017 Thomas Harte. All rights reserved.
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//
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#include "Parser.hpp"
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#include "Constants.hpp"
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#include "../../Track/TrackSerialiser.hpp"
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#include "SegmentParser.hpp"
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using namespace Storage::Encodings::MFM;
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Parser::Parser(bool is_mfm, const std::shared_ptr<Storage::Disk::Disk> &disk) :
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disk_(disk), is_mfm_(is_mfm) {}
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void Parser::install_sectors_from_track(const Storage::Disk::Track::Address &address) {
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if(sectors_by_address_by_track_.find(address) != sectors_by_address_by_track_.end()) {
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return;
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}
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std::shared_ptr<Storage::Disk::Track> track = disk_->get_track_at_position(address);
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if(!track) {
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return;
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}
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std::map<std::size_t, Sector> sectors = sectors_from_segment(
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Storage::Disk::track_serialisation(*track, is_mfm_ ? MFMBitLength : FMBitLength),
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is_mfm_);
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std::map<int, Storage::Encodings::MFM::Sector> sectors_by_id;
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for(const auto §or : sectors) {
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sectors_by_id.insert(std::make_pair(sector.second.address.sector, std::move(sector.second)));
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}
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sectors_by_address_by_track_.insert(std::make_pair(address, std::move(sectors_by_id)));
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}
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Sector *Parser::get_sector(int head, int track, uint8_t sector) {
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Disk::Track::Address address(head, Storage::Disk::HeadPosition(track));
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install_sectors_from_track(address);
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auto sectors = sectors_by_address_by_track_.find(address);
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if(sectors == sectors_by_address_by_track_.end()) {
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return nullptr;
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}
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auto stored_sector = sectors->second.find(sector);
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if(stored_sector == sectors->second.end()) {
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return nullptr;
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}
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return &stored_sector->second;
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}
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