private static void parseLineOfSudokuBoard(SudokuFile sf, String[] values, int rowNumber) {
// writes values to the row set in param rowNumber
if (sf.getBoard() == null) {
sf.setBoard(new int[sf.getN()][sf.getN()]);
}
int[][] board = sf.getBoard();
for (int i = 0; i < values.length; i++) {
board[rowNumber][i] = Odometer.odometerToInt(values[i]);
}
}
public static SudokuFile readFile(String filePath) {
// Get filePath. from path and filename. If path is null,
// it'll default to the current directory
try (Reader reader = new FileReader(filePath)) {
try (BufferedReader br = new BufferedReader(reader)) {
SudokuFile sF = new SudokuFile();
String line;
int lineCounter = 0;
while ((line = br.readLine()) != null) {
String[] lineParts = line.split("\\s+");
if (lineCounter == 0) {
setSudokuFileParameters(sF, lineParts); // parameter line: contains p, q, N
} else {
parseLineOfSudokuBoard(
sF, lineParts, lineCounter - 1); // obo due to parameters taking up first line
}
lineCounter++;
}
if (lineCounter == 0) {
System.out.println("Input file \"" + filePath + "\" was empty");
} else if (lineCounter < sF.getN()) {
System.out.println(
"Incomplete or Emtpy board for file " + filePath + ". Please be advised");
}
return sF;
}
} catch (IOException e1) {
// TODO Auto-generated catch block
System.err.print("Invalid file:" + filePath + ". Skipping to the next file.\n");
} catch (NumberFormatException e2) {
e2.printStackTrace();
}
// Something wrong happened if it reaches here
return new SudokuFile();
}
// helpers
private static void setSudokuFileParameters(SudokuFile sf, String[] params) throws IOException {
if (params.length != 3) throw new IOException("Params invalid in file.");
sf.setN(Integer.parseInt(params[0]));
sf.setP(Integer.parseInt(params[1]));
sf.setQ(Integer.parseInt(params[2]));
}
