renamed 'src' to 'tools'

tools/common.h

@@ -0,0 +1,58 @@
+//
+// Common parts of utilities written in C++
+// for providing uniform user experience
+//
+
+#include <iostream>
+#include <string>
+
+
+#if defined(WIN32) || defined(_WIN32)
+    #define DIR_SEPARATOR "\\"
+#else
+    #define DIR_SEPARATOR "/"
+#endif
+
+
+const std::string BANNER_LINE = "//-------------------------------------------------------------------------------------------";
+
+
+void ERROR()
+{
+    exit(-1);
+}
+
+void ERROR(const std::string &message)
+{
+    std::cout << "\n" << "ERROR: " << message << "\n\n";
+    exit(-1);
+}
+
+void printBannerLineTop()
+{
+    std::cout << "\n\n\n" << BANNER_LINE << "\n";
+}
+
+void printBannerLineBottom()
+{
+    std::cout << BANNER_LINE << "\n\n";
+}
+
+
+class DualStream
+{
+public:
+    DualStream(std::ostream& str1, std::ostream& str2) : str1(str1), str2(str2) {}
+
+    template<class T> DualStream &operator<<(const T& x)
+    {
+        str1 << x;
+        str2 << x;
+
+        return *this;
+    }
+
+private:
+    std::ostream& str1;
+    std::ostream& str2;
+};