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#include "sudoku.hh"
bool Grid::verbose = false;
bool Grid::advprint = false;
int Grid::load(const char *filename)
{
int val;
std::fstream fs;
assert(filename);
if (Grid::verbose)
std::cout << "Loading file: " << filename << "..." << std::endl;
fs.open(filename, std::fstream::in);
if (!fs.is_open())
return 0;
for (int y = 0; y < GRID_SIDE; ++y)
for (int x = 0; x < GRID_SIDE; ++x) {
fs >> std::dec >> val;
if (val < 0 || val > 9) {
std::cerr << "Invalid value in file: " << val << std::endl;
exit(EXIT_LOADFAIL);
}
if (val > 0)
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//block_[i][j].set(val);
}
fs.close();
return 1;
}
void Grid::pose(int x, int y, int v)
{
if (x < 0 || x >= GRID_SIDE || y < 0 || y >= GRID_SIDE) {
std::cerr << "Invalid position: " << x + 1 << ", " << y + 1 << std::endl;
exit(EXIT_INV_POS);
}
if (v <= 0 || v > GRID_SIDE) {
std::cerr << "Invalid value: " << v << std::endl;
exit(EXIT_INV_VAL);
}
for (int i = 0; i < GRID_SIDE; ++i) {
block_[x][i].forbid(v);
block_[i][y].forbid(v);
}
for (int i = 0; i < 3; ++i)
for (int j = 0; j < 3; ++j)
block_[(x / 3) * 3 + x][(y / 3) * 3 + y].forbid(v);
}
void Grid::resolve()
{
if (Grid::verbose)
std::cout << "Resolving..." << std::endl;
}
void Grid::print() const
{
int i, j, k;
for (i = 0; i < GRID_SIDE; ++i) {
print_line();
if (i > 0 && i % 3 == 0)
print_line();
if (Grid::advprint) {
for (int l = 0; l < 3; ++l) {
for (j = 0; j < GRID_SIDE; ++j) {
if (j > 0 && j % 3 == 0)
std::cout << "| ";
std::cout << "|";
for (k = l * 3 + 1; k <= l * 3 + 3; ++k)
if (block_[i][j].value_get() == k)
std::cout << "\033[0;32m" << k << "\033[0m";
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std::cout << "\033[0;31m" << k << "\033[0m";
else
std::cout << k;
}
std::cout << "|" << std::endl;
}
}
else {
std::cout << "|";
for (j = 0; j < GRID_SIDE; ++j) {
if (j > 0 && j % 3 == 0) std::cout << " |";
std::cout << " " << block_[i][j] << " |";
}
std::cout << std::endl;
}
}
print_line();
}
bool Grid::is_done() const
{
for (int i = 0; i < GRID_SIDE; ++i)
for (int j = 0; j < GRID_SIDE; ++j)
if (block_[i][j].value_get() == 0)
return false;
return true;
}
bool Grid::verify() const
{
bool vertical_line[GRID_SIDE];
bool horizontal_line[GRID_SIDE];
int tmp;
// check horizontals and verticales
for (int i = 0; i < GRID_SIDE; ++i) {
for (int j = 0; j < GRID_SIDE; ++j)
horizontal_line[j] = vertical_line[j] = false;
for (int j = 0; j < GRID_SIDE; ++j) {
//horizontals
tmp = block_[i][j].value_get() - 1;
if (tmp < 0 || horizontal_line[tmp])
return false;
horizontal_line[tmp] = true;
//verticals
tmp = block_[j][i].value_get() - 1;
if (tmp < 0 || vertical_line[tmp] == true)
return false;
vertical_line[tmp] = true;
}
for (int j = 0; j < GRID_SIDE; ++j)
if (!vertical_line[j] || !horizontal_line[j])
return false;
}
// check nine blocks (use vertical_block)
for (int j = 0; j < GRID_SIDE; ++j)
vertical_line[j] = false;
for (int i = 0; i < GRID_SIDE; i += 3)
for (int j = 0; j < GRID_SIDE; j += 3)
for (int k = 0; k < 3; ++k)
for (int l = 0; l < 3; ++l) {
tmp = block_[i + k][j + l].value_get() - 1;
if (tmp < 0 || vertical_line[tmp] == true)
return false;
vertical_line[tmp] = true;
}
for (int j = 0; j < GRID_SIDE; ++j)
if (!vertical_line[j])
return false;
return true;
}