#include <fstream>

#include <regex>

#include <algorithm>

#include <unistd.h>

void processDataStream(ostream &output, istream* input) {

	wregex devicePattern = wregex(L"(LABEL|UUID)=(.*)");

	wregex linePattern = wregex(L"^([^\\s#]+)\\s+([^\\s]+)\\s+([^\\s]+)\\s+([^\\s]+)\\s+(\\d+)\\s+(\\d+)\\s*$");

	wstring_convert < codecvt_utf8<wchar_t>> convertor; // TODO: support also other encodings.

	std::shared_ptr<RelationalWriter> writer(Factory::create(output));

	writer->startRelation(L"fstab",{

		{L"scheme", TypeId::STRING},

		{L"device", TypeId::STRING},

		{L"mount_point", TypeId::STRING},

		{L"type", TypeId::STRING},

		// {L"types", TypeId::STRING}, // TODO: array

		{L"options", TypeId::STRING}, // TODO: array

		{L"dump", TypeId::INTEGER},

		{L"pass", TypeId::INTEGER}

	}, true);

	string lineBytes;

	while (getline(*input, lineBytes)) {

		wstring line = convertor.from_bytes(lineBytes);

		wsmatch lineMatch;

		if (regex_search(line, lineMatch, linePattern) && lineMatch.size() > 0) {

			int g = 1;

			wstring device = lineMatch[g++];

			wstring mountPoint = lineMatch[g++];

			wstring type = lineMatch[g++];

			wstring options = lineMatch[g++];

			wstring dump = lineMatch[g++];

			wstring pass = lineMatch[g++];

			wsmatch deviceMatch;

			if (regex_search(device, deviceMatch, devicePattern)) {

				writer->writeAttribute(deviceMatch[1]);

				writer->writeAttribute(deviceMatch[2]);

			} else {

				writer->writeAttribute(L""); // TODO: null (requires bitmap)

				writer->writeAttribute(device);

			}

			if (mountPoint == L"none") mountPoint = L""; // TODO: null (requires bitmap)

			writer->writeAttribute(mountPoint);

			writer->writeAttribute(type);

			writer->writeAttribute(options);

			writer->writeAttribute(dump);

			writer->writeAttribute(pass);

		}

	}

}

	//CLI cli(argc, argv);

		if (isatty(fileno(stdin))) {

			ifstream s("/etc/fstab");

			processDataStream(cout, &s);

		} else {

			processDataStream(cout, &cin);

		}

		resultCode = CLI::EXIT_CODE_SUCCESS;