55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
//
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// Created by black on 06.07.25.
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//
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#include "ProgramLoader.h"
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#include <sstream>
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ProgramLoader *ProgramLoader::getInstance() {
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static ProgramLoader instance;
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return &instance;
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}
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[[nodiscard]] std::vector<std::string> ProgramLoader::parseLine(const std::string &input) {
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if (input.empty()) return std::vector<std::string>{};
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std::vector<std::string> output{};
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/// Konvertiere den Input String in einen IStringStream, damit dieser bei Leerzeichen gesplittet werden kann
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std::istringstream iss(input);
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std::string out;
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do {
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out.clear();
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/// Trenne den IStringStream bei jedem Leerzeichen und füge die Befehl(e)/-sargumente dem Output hinzu
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std::getline(iss, out, ' ');
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if (out.empty()) break;
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/// Stoppe, sobald ein Kommentar im Source Code vorkommt
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if (out.at(0) != '#') {
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if (out.at(out.length() - 1) == ',') {
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out.erase(out.length() - 1);
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}
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output.push_back(out);
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} else {
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break;
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}
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} while (!out.empty());
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return output;
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}
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void ProgramLoader::indexFile(std::ifstream &m_programFile) {
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m_programFile.clear();
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m_programFile.seekg(0);
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std::string line;
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/// Parse Zeile für Zeile
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while (std::getline(m_programFile, line)) {
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auto lineVector = parseLine(line);
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if (lineVector.empty()) continue;
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/// Sobald ein Label gefunden wurde, speichere die Position des Streams
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if (const auto first = lineVector.begin(); first->at(first->length() - 1) == ':') {
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m_labels[first->substr(0, first->length() - 1)] = m_programFile.tellg();
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}
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}
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}
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std::streampos ProgramLoader::getStreamPosition(const std::string &label) const {
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return m_labels.find(label)->second;
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}
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