float find_product_number(string line) {
string::size_type pos = line.find(";");
string c = line.substr(0, pos);
string p = line.substr(pos + 1);
vector<string> customer, product;
while (c.find_first_of(",") != string::npos) {
pos = c.find_first_of(",");
string temp = c.substr(0, pos);
customer.push_back(temp);
c = c.substr(pos + 1);
}
customer.push_back(c);
while (p.find_first_of(",") != string::npos) {
pos = p.find_first_of(",");
string temp = p.substr(0, pos);
product.push_back(temp);
p = p.substr(pos + 1);
}
product.push_back(p);
vector<Letter *> customer_letter = find_letter(customer);
vector<Letter *> product_letter = find_letter(product);
auto M = customer_letter.size();
auto N = product_letter.size();
if (M < N) {
auto diff = N - M;
for (vector<Letter *>::size_type i = 0; i < diff; ++i) {
Letter *l = (Letter *) malloc(sizeof(Letter));
l->letter = 0;
customer_letter.push_back(l);
}
}
else if (M > N) {
auto diff = M - N;
for (vector<Letter *>::size_type i = 0; i < diff; ++i) {
Letter *l = (Letter *) malloc(sizeof(Letter));
l->letter = 0;
product_letter.push_back(l);
}
}
return Hungarian(customer_letter, product_letter);
}
void render_screen(int fd, std::string str)
{
// Clear the screen
memset(frontstore, 0, sizeof(frontstore));
auto render_string = [](std::string str, int start_line)
{
// The start line, and start x coordinate
int line = start_line;
int char_x = 1;
// Run the entire string, char by char
for(char& c : str)
{
// Find the pixel letter corresponding to the char
Letter l = find_letter(c);
// If we overflow this line, by adding it, do a line break
if(char_x + l.letter_width >= YSIZE)
{
char_x = 1;
line++;
// If we overflow the screen, skip the rest of the string
if(line > 2)
{
break;
}
}
// Calculate our y coord, based upon the line, we're in
int char_y = 0 + line * (LETTER_HEIGHT + 1);
// Do the actual printing of the character
put_letter(char_y, char_x, l);
// Move the size of this letter, and 1 character,
// before rendering the next character
char_x += l.letter_width;
char_x += 1;
}
// People who start on the line after us
return line+1;
};
// Write the new string
int end_line = render_string(str, 0);
// If the new string did not take up all the space,
// lets reload some of the old stuff, and draw that
for(std::string old : old_lines)
{
// Only draw, if we're inside the screen
if(end_line > 2)
{
break;
}
end_line = render_string(old, end_line);
}
// The string we just rendered, is now an old line
old_lines.push_front(str);
// Garbage collect old_lines
while(old_lines.size() > 3)
{
old_lines.pop_back();
}
// Render!
scr_frontmap(fd);
}
