chore: entrypoint initial scaffolding

main.cpp

@@ -1,3 +0,0 @@
-int main(int argc, char **argv) {
-    return 0;
-}

src/main.cpp

@@ -0,0 +1,43 @@
+#include <fstream>
+#include <iostream>
+#include <regex>
+#include <string>
+
+#include "parser.hpp"
+#include "utils.hpp"
+
+int process(std::string source) {
+  std::ifstream ifs(source);
+  std::string line;
+
+  LinkedList<Command> *commands = nullptr;
+
+  while (getline(ifs, line)) {
+    if (isComment(line) || isEmptyLine(line))
+      continue;
+
+    int parseResult;
+
+    if ((parseResult = parseCommand(commands, line)) != 0)
+      return parseResult;
+  }
+
+  return 0;
+}
+
+int main(int argc, char **argv) {
+  if (argc != 2) {
+    std::cerr << "You must specify an argument for the vm file to translate!"
+              << std::endl;
+    exit(1);
+  }
+
+  std::string source = argv[1];
+
+  if (!regex_match(source, std::regex("^.+\\.vm"))) {
+    std::cerr << "Source file is not a vm file!" << std::endl;
+    exit(1);
+  }
+
+  return process(source);
+}