61 lines
1.2 KiB
C++
61 lines
1.2 KiB
C++
#pragma once
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#include "./file.hpp"
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#include <fstream>
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struct FileRWFile : public FileI {
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std::fstream _file;
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//FileWFile(std::string_view file_path, uint64_t file_size) : _file(static_cast<std::string>(file_path), std::ios::binary) {
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//_file_size = file_size;
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//if (!_file.is_open()) {
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//return; // TODO: error
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//}
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//}
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virtual ~FileRWFile(void) {}
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bool isGood(void) override {
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return _file.is_open() && _file.good();
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}
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std::vector<uint8_t> read(uint64_t pos, uint32_t size) override {
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if (pos >= _file_size) {
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return {};
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}
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// TODO: error check
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_file.seekg(pos);
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// TODO: optimize
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std::vector<uint8_t> chunk;
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int read_char;
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for (size_t i = 0; i < size && (_file_size == 0 || i+pos < _file_size) && (read_char = _file.get()) != std::ifstream::traits_type::eof(); i++) {
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chunk.push_back(read_char);
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}
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_bytes_read += chunk.size();
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return chunk;
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}
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bool write(uint64_t pos, const std::vector<uint8_t>& data) override {
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if (pos >= _file_size) {
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return false;
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}
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// if out-of-order, seek
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if (_file.tellp() != int64_t(pos)) {
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// TODO: error check
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_file.seekp(pos);
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}
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_file.write(reinterpret_cast<const char*>(data.data()), data.size());
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return _file.good();
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}
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};
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