Grid and file reading

This commit is contained in:
Love 2024-09-04 19:25:47 +02:00
parent 6306327d74
commit cc2ce40642

View File

@ -4,10 +4,14 @@
#include "grid.h"
#include "lifeutil.h"
#include "unistd.h"
#include <fstream>
#include <iostream>
#include <string>
const char *const FORMAT_UNDERSCORE = "\033[4m";
const char *const END_FORMATTING = "\033[0m";
void printWelcome() {
std::cout << "Welcome to the TDDD86 Game of Life,\n"
<< "a simulation of the lifecycle of a bacteria colony.\n"
@ -20,16 +24,19 @@ void printWelcome() {
std::string input(const char *message) {
if (message != nullptr) {
std::cout << message;
std::cout << message << FORMAT_UNDERSCORE;
std::flush(std::cout);
}
std::string ret;
std::getline(std::cin, ret);
if (message != nullptr)
std::cout << END_FORMATTING;
return ret;
}
std::string readFile(const char *filePath) {
bool fileExists(const char *fileName) { return access(fileName, 0) == 0; }
std::string fileRead(const char *filePath) {
std::ifstream file(filePath, std::ios::binary);
if (!file.is_open())
throw std::runtime_error("File couldn't be found");
@ -45,8 +52,100 @@ std::string readFile(const char *filePath) {
return content;
}
enum UserAction { NO_ACTION, ACTION, TICK, QUIT };
UserAction askUserForAction() {
std::string userInput = input("a)nimate, t)ick, q)uit? ");
if (userInput == "a")
return UserAction::ACTION;
else if (userInput == "t")
return UserAction::TICK;
else if (userInput == "q")
return UserAction::QUIT;
return UserAction::NO_ACTION;
}
std::vector<std::string> split(const std::string &s, const char at) {
std::vector<std::string> ret;
size_t last = 0, idx;
while ((idx = s.find(at, last)) != std::string::npos) {
std::string sub = s.substr(last, idx - last);
ret.push_back(sub);
last = idx + 1;
}
ret.push_back(s.substr(last));
return ret;
}
enum Cell { ALIVE, DEAD };
int main() {
printWelcome();
std::string inputFile;
while (true) {
inputFile = input("Grid input file name? ");
if (fileExists(inputFile.c_str()))
break;
std::cout << "File '" << inputFile << "' doesn't exist!" << std::endl;
}
std::string fileContents;
try {
fileContents = fileRead(inputFile.c_str());
} catch (std::exception &e) {
std::cerr << "Failed to read file: " << e.what() << std::endl;
return 1;
}
std::vector<std::string> lines = split(fileContents, '\n');
if (lines.size() <= 2) {
std::cerr << "No column, row header, in the file!" << std::endl;
return 1;
}
int columns, rows;
try {
columns = std::stoi(lines[0]);
rows = std::stoi(lines[1]);
} catch (const std::invalid_argument &e) {
std::cerr << "Column or row wasn't a number" << std::endl;
return 1;
} catch (const std::out_of_range &e) {
std::cerr << "Column or row was too large" << std::endl;
return 1;
}
if (lines.size() - 2 < rows) {
std::cerr << "There's less rows than described in the header!" << std::endl;
return 1;
}
Grid<Cell> grid(columns, rows);
for (int x = 0; x < rows; x++) {
std::string &row = lines[x];
if (columns < row.size()) {
std::cerr << "There's less columns, than described in the header!"
<< std::endl;
return 1;
}
for (int y = 0; y < columns; y++) {
char sign = row[y];
switch (sign) {
case '-':
grid.set(x, y, Cell::DEAD);
break;
case 'X':
grid.set(x, y, Cell::ALIVE);
break;
default:
std::cerr << "Invalid option '" << sign << "' in grid description!"
<< std::endl;
return 1;
}
}
}
return 0;
}