63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
#include "helpers/encoding_file.hpp"
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#include <hex/helpers/utils.hpp>
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#include <fstream>
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namespace hex {
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EncodingFile::EncodingFile(Type type, std::string_view path) {
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std::ifstream encodingFile(path.data());
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switch (type) {
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case Type::Thingy: parseThingyFile(encodingFile); break;
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default: throw std::runtime_error("Invalid encoding file type");
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}
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}
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std::pair<std::string_view, size_t> EncodingFile::getEncodingFor(const std::vector<u8> &buffer) const {
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for (auto iter = this->m_mapping.rbegin(); iter != this->m_mapping.rend(); iter++) {
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auto &[size, mapping] = *iter;
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if (size > buffer.size()) continue;
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auto key = std::vector<u8>(buffer.begin(), buffer.begin() + size);
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if (mapping.contains(key))
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return { mapping.at(key), size };
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}
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return { ".", 1 };
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}
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void EncodingFile::parseThingyFile(std::ifstream &content) {
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for (std::string line; std::getline(content, line);) {
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std::string from, to;
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{
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auto delimiterPos = line.find('=', 0);
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if (delimiterPos == std::string::npos)
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continue;
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from = line.substr(0, delimiterPos);
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to = line.substr(delimiterPos + 1);
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hex::trim(from);
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hex::trim(to);
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if (from.empty()) continue;
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if (to.empty()) to = " ";
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}
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auto fromBytes = hex::parseByteString(from);
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if (fromBytes.empty()) continue;
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if (!this->m_mapping.contains(fromBytes.size()))
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this->m_mapping.insert({ fromBytes.size(), { } });
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this->m_mapping[fromBytes.size()].insert({ fromBytes, to });
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this->m_longestSequence = std::max(this->m_longestSequence, fromBytes.size());
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}
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}
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} |