2 files changed, 46 insertions, 0 deletions
diff --git a/um/libsimple/utils/CMakeLists.txt b/um/libsimple/utils/CMakeLists.txt
new file mode 100644
index 0000000..8824e3e
--- /dev/null
+++ b/um/libsimple/utils/CMakeLists.txt
@@ -0,0 +1,2 @@
+add_executable(exchange_ints exchange_ints.cpp)
+target_link_libraries(exchange_ints libsimple)
diff --git a/um/libsimple/utils/exchange_ints.cpp b/um/libsimple/utils/exchange_ints.cpp
new file mode 100644
index 0000000..2935b2f
--- /dev/null
+++ b/um/libsimple/utils/exchange_ints.cpp
@@ -0,0 +1,44 @@
+// Copyright (c) 2015 Egor Tensin <Egor.Tensin@gmail.com>
+// This file is part of the "Windows 7 drivers" project.
+// For details, see https://github.com/egor-tensin/windows7-drivers.
+// Distributed under the MIT License.
+
+#include "libsimple/all.hpp"
+
+#include <exception>
+#include <iostream>
+#include <sstream>
+#include <string>
+
+namespace
+{
+    bool parse_int(unsigned int& dest, const std::string& src)
+    {
+        std::istringstream iss(src);
+        char c;
+        return iss >> dest && !iss.get(c);
+    }
+}
+
+int main(int argc, char* argv[])
+{
+    try
+    {
+        unsigned int src;
+
+        if (argc != 2 || !parse_int(src, argv[1]))
+        {
+            std::cout << "Usage: " << argv[0] << " N\n";
+            return 1;
+        }
+
+        std::cout << libsimple::Device().exchange_ints(src) << "\n";
+    }
+    catch (const std::exception& e)
+    {
+        std::cerr << e.what() << "\n";
+        return 1;
+    }
+
+    return 0;
+}