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#include <fstream>
#include <iostream>
#include <string>

const std::string head = "#include <cstdio>\n#include <vector>\nstd::vector<short> v(30000);\nshort* p = &(v[0]);\nint main() {\n";
const std::string end = "}";


int main(int argc, char* argv[])
{
  std::string line;

  std::ifstream bfsourcef(argv[1]);
  std::string bfsource = "";
  std::string bfCleanedUp = "";

  std::string cppsource = head;

  if (bfsourcef.is_open()) {
    while (std::getline(bfsourcef, line)) {
      bfsource.append(line);
    }
    bfsourcef.close();
  }
  
  for (int i = 0; i < bfsource.size(); ++i) {
    switch(bfsource[i]) {
      case '<':
      case '>':
      case '+':
      case '-':
      case '[':
      case ']':
      case ',':
      case '.':
        bfCleanedUp.append(bfsource.substr(i, 1));
    }
  }

  int brace = 0;
  for (int i = 0; i < bfCleanedUp.size(); ++i) {
    if (bfCleanedUp[i] == '[') {
      ++brace;
    }
    else if (bfCleanedUp[i] == ']') {
      --brace;
    }
  }
  if (brace != 0) {
    if (brace > 0) {
      std::cerr << "Missing closing brackets! ";
    }
    else {
      std::cerr << "Missing opening brackets! ";
    }
    std::cerr << "Terminating compilation!\n";
    return 1;
  }

  for (int i = 0; i < bfCleanedUp.size(); ++i) {
    switch (bfCleanedUp[i]) {
      case '<':
        cppsource.append("--p;");
        break;
      case '>':
        cppsource.append("++p;");
        break;
      case '+':
        cppsource.append("++(*p);");
        break;
      case '-':
        cppsource.append("--(*p);");
        break;
      case '[':
        cppsource.append("while(*p) {");
        break;
      case ']':
        cppsource.append("}");
        break;
      case ',':
        cppsource.append("*p = std::getchar();");
        break;
      case '.':
        cppsource.append("putchar(*p);");
        break;
      }
      //cppsource.append("\n");
  }
  cppsource.append(end);

  std::cout << cppsource << std::endl;

}