98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
#include <hex/helpers/encoding_file.hpp>
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#include <hex/helpers/utils.hpp>
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#include <wolv/io/file.hpp>
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#include <wolv/utils/string.hpp>
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namespace hex {
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EncodingFile::EncodingFile(Type type, const std::fs::path &path) {
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auto file = wolv::io::File(path, wolv::io::File::Mode::Read);
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switch (type) {
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case Type::Thingy:
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parse(file.readString());
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break;
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default:
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return;
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}
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this->m_valid = true;
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}
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EncodingFile::EncodingFile(Type type, const std::string &content) {
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switch (type) {
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case Type::Thingy:
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parse(content);
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break;
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default:
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return;
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}
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this->m_valid = true;
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}
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std::pair<std::string_view, size_t> EncodingFile::getEncodingFor(std::span<u8> buffer) const {
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for (auto riter = this->m_mapping.crbegin(); riter != this->m_mapping.crend(); ++riter) {
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const auto &[size, mapping] = *riter;
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if (size > buffer.size()) continue;
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std::vector<u8> key(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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size_t EncodingFile::getEncodingLengthFor(std::span<u8> buffer) const {
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for (auto riter = this->m_mapping.crbegin(); riter != this->m_mapping.crend(); ++riter) {
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const auto &[size, mapping] = *riter;
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if (size > buffer.size()) continue;
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std::vector<u8> key(buffer.begin(), buffer.begin() + size);
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if (mapping.contains(key))
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return size;
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}
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return 1;
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}
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void EncodingFile::parse(const std::string &content) {
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this->m_tableContent = content;
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for (const auto &line : splitString(this->m_tableContent, "\n")) {
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std::string from, to;
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{
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auto delimiterPos = line.find('=');
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if (delimiterPos >= line.length())
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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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if (from.empty()) continue;
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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 (to.length() > 1)
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to = wolv::util::trim(to);
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if (to.empty())
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to = " ";
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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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auto keySize = fromBytes.size();
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this->m_mapping[keySize].insert({ std::move(fromBytes), to });
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this->m_longestSequence = std::max(this->m_longestSequence, keySize);
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}
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}
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} |