2 files changed, 20 insertions, 1 deletions
diff --git a/src/support/file.cpp b/src/support/file.cpp
index c1d9e6e33..bd6f2d4bd 100644
--- a/src/support/file.cpp
+++ b/src/support/file.cpp
@@ -73,3 +73,15 @@ wasm::Output::Output(const std::string &filename, Flags::BinaryOption binary, Fl
         }
         return buffer;
       }()) {}
+
+void wasm::copy_file(std::string input, std::string output) {
+  std::ifstream src(input, std::ios::binary);
+  std::ofstream dst(output, std::ios::binary);
+  dst << src.rdbuf();
+}
+
+size_t wasm::file_size(std::string filename) {
+  std::ifstream infile(filename, std::ifstream::ate | std::ifstream::binary);
+  return infile.tellg();
+}
+
diff --git a/src/support/file.h b/src/support/file.h
index 0f0ec15f3..b0df8fd06 100644
--- a/src/support/file.h
+++ b/src/support/file.h
@@ -66,6 +66,13 @@ class Output {
   std::ofstream outfile;
   std::ostream out;
 };
-}
+
+// Copies a file to another file
+void copy_file(std::string input, std::string output);
+
+// Retusn the size of a file
+size_t file_size(std::string filename);
+
+} // namespace wasm
 
 #endif  // wasm_support_file_h