83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
#include "stdafx.h"
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#include "../inc/Rom.h"
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#include <iostream>
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bool EightBit::Rom::operator==(const Rom& rhs) const {
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return BYTES() == rhs.BYTES();
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}
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int EightBit::Rom::load(std::ifstream& file, std::vector<uint8_t>& output, const int writeOffset, const int readOffset, int limit, const int maximumSize) {
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file.seekg(0, std::ios::end);
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const auto size = (int)file.tellg();
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if ((maximumSize > 0) && ((size - readOffset) > maximumSize))
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throw std::runtime_error("Binary cannot fit");
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file.seekg(readOffset, std::ios::beg);
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if ((limit < 0) || (limit > size))
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limit = size;
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const size_t extent = limit + writeOffset;
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if (output.size() < extent)
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output.resize(extent);
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file.read((char*)&output[writeOffset], limit);
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return size;
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}
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int EightBit::Rom::load(const std::string path, std::vector<uint8_t>& output, const int writeOffset, const int readOffset, const int limit, const int maximumSize) {
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std::ifstream file;
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file.exceptions(std::ios::failbit | std::ios::badbit);
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file.open(path, std::ios::binary | std::ios::ate);
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const auto size = load(file, output, writeOffset, readOffset, limit, maximumSize);
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file.close();
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return size;
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}
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void EightBit::Rom::poke(const uint16_t address, const uint8_t value) noexcept {
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BYTES()[address] = value;
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}
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EightBit::Rom::Rom(const size_t size) noexcept
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: m_bytes(size) {}
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EightBit::Rom::Rom(const Rom& rhs)
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: m_bytes(rhs.m_bytes) {}
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EightBit::Rom& EightBit::Rom::operator=(const Rom& rhs) {
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if (this != &rhs)
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m_bytes = rhs.m_bytes;
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return *this;
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}
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uint16_t EightBit::Rom::size() const noexcept {
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const auto size = BYTES().size();
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assert(size <= 0x10000);
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return static_cast<uint16_t>(size);
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}
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int EightBit::Rom::load(std::ifstream& file, const int writeOffset, const int readOffset, const int limit) {
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const auto maximumSize = size() - writeOffset;
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return load(file, m_bytes, writeOffset, readOffset, limit, maximumSize);
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}
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int EightBit::Rom::load(const std::string path, const int writeOffset, const int readOffset, const int limit) {
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const auto maximumSize = size() - writeOffset;
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return load(path, m_bytes, writeOffset, readOffset, limit, maximumSize);
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}
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int EightBit::Rom::load(const std::vector<uint8_t>& bytes, const int writeOffset, const int readOffset, int limit) {
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return load(bytes.cbegin(), bytes.cend(), writeOffset, readOffset, limit);
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}
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uint8_t EightBit::Rom::peek(const uint16_t address) const noexcept {
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return BYTES()[address];
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}
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