allow Path::join() to take an arbitrary number of arguments

src/core/Path.cc

@@ -17,7 +17,7 @@ std::string Path::dirname(const std::string & s)
     return std::string(s, 0, pos);
 }
 
-std::string Path::join(const std::string & first, const std::string & second)
+std::string Path::_join(const std::string & first, const std::string & second)
 {
     if (first == "")
     {

src/core/Path.h

@@ -7,9 +7,24 @@ class Path
 {
 public:
     static std::string dirname(const std::string & s);
-    static std::string join(const std::string & first, const std::string & second);
+
+    template <typename... Parts>
+    static std::string join(Parts... parts)
+    {
+        return _join(parts...);
+    }
+
     static bool is_file(const std::string & s);
     static bool is_dir(const std::string & s);
+
+protected:
+    static std::string _join(const std::string & first, const std::string & second);
+
+    template <typename... Parts>
+    static std::string _join(const std::string & first, const std::string & second, Parts... more)
+    {
+        return _join(_join(first, second), more...);
+    }
 };
 
 #endif

test/src/test_Path.cc

@@ -62,6 +62,11 @@ TEST(Path_join, does_not_add_extra_slash_when_first_path_already_ends_with_one)
     EXPECT_EQ("/var/run", Path::join("/var/", "run"));
 }
 
+TEST(Path_join, allows_arbitrary_number_of_arguments)
+{
+    EXPECT_EQ("/usr/local/share/jes/runtime", Path::join("/usr/local/", "share", "jes/", "runtime"));
+}
+
 
 TEST(Path_is_file, returns_true_for_file)
 {