DbcIterator.cpp

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#include "DbcIterator.hpp"

#include <limits>
#include <fstream>
#include <stdexcept>

DBCIterator::DBCIterator(const std::vector<std::string>& paths) {
  messageList.clear();
  // Multiple files will overlap but this doesn't matter.
  for (unsigned int i = 0; i < paths.size(); i++) {
    std::ifstream file(paths[i].c_str());
    if (file) {
      parseStream(file);
    } else {
      throw std::invalid_argument("The File could not be opened");
    }
    file.close(); 
  }
}

DBCIterator::DBCIterator(const std::string& path) {
  messageList.clear();
  std::ifstream file(path.c_str());
  if (file) {
    parseStream(file);
  } else {
    throw std::invalid_argument("The File could not be opened");
  }
  file.close();
}

DBCIterator::DBCIterator(std::istream& stream) {
  parseStream(stream);
}

void DBCIterator::parseStream(std::istream& stream) {
  std::vector<Message> messages;
  do {
    Message msg;
    stream >> msg;
    if (stream.fail()) {
      stream.clear();
      stream.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
    } else {
      messages.push_back(msg);
    }
  } while (!stream.eof());
  messageList.insert(messageList.begin(), messages.begin(), messages.end());
}