1 files changed, 44 insertions, 0 deletions
diff --git a/mcc.cpp b/mcc.cpp
index da2a981..fa9b0b8 100644
--- a/mcc.cpp
+++ b/mcc.cpp
@@ -1,6 +1,50 @@
+//
 // CLI
+//
+
+#include "cpp.h"
+#include "elf.h"
+#include "file.h"
+
+#include <iostream>
+
+using namespace std::string_literals;
+
+namespace {
+
+void usage() {
+ std::cout << "Usage: mcc <translation_unit>" << std::endl;
+}
+
+}
 
 int main(int argc, char* argv[])
 {
+ try {
+  CPP cpp;
+
+  if (argc != 2) {
+   usage();
+   return 1;
+  }
+
+  fs::path in_filename{argv[1]};
+  fs::path out_filename{in_filename.parent_path() / in_filename.stem()};
+
+  if (in_filename == out_filename)
+   throw std::runtime_error("Bad output filename: "s + out_filename.generic_string());
+
+  auto unit {File::getFile(in_filename)};
+
+  std::string unit_string(reinterpret_cast<char*>(unit.data()), unit.size());
+
+  cpp.translate(unit_string);
+
+  Elf::Write(out_filename, cpp.getCode(), cpp.getData());
+ } catch (const std::exception& ex) {
+  std::cout << "Error: " << ex.what() << std::endl;
+  return 1;
+ }
+
  return 0;
 }