add Path::is_file() and Path::is_dir()

src/core/Path.cc

@@ -1,4 +1,7 @@
 #include "Path.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
 
 std::string Path::dirname(const std::string & s)
 {
@@ -31,3 +34,23 @@ std::string Path::join(const std::string & first, const std::string & second)
     }
     return first + "/" + second;
 }
+
+bool Path::is_file(const std::string & s)
+{
+    struct stat st;
+    if (stat(s.c_str(), &st) != 0)
+    {
+        return false;
+    }
+    return S_ISREG(st.st_mode);
+}
+
+bool Path::is_dir(const std::string & s)
+{
+    struct stat st;
+    if (stat(s.c_str(), &st) != 0)
+    {
+        return false;
+    }
+    return S_ISDIR(st.st_mode);
+}

src/core/Path.h

@@ -8,6 +8,8 @@ class Path
 public:
     static std::string dirname(const std::string & s);
     static std::string join(const std::string & first, const std::string & second);
+    static bool is_file(const std::string & s);
+    static bool is_dir(const std::string & s);
 };
 
 #endif

test/src/test_Path.cc

@@ -61,3 +61,35 @@ 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_is_file, returns_true_for_file)
+{
+    EXPECT_TRUE(Path::is_file("test/src/test_Path.cc"));
+}
+
+TEST(Path_is_file, returns_false_for_directory)
+{
+    EXPECT_FALSE(Path::is_file("test"));
+}
+
+TEST(Path_is_file, returns_false_for_nonexistent_path)
+{
+    EXPECT_FALSE(Path::is_file("non.existent"));
+}
+
+
+TEST(Path_is_dir, returns_true_for_directory)
+{
+    EXPECT_TRUE(Path::is_dir("test/src"));
+}
+
+TEST(Path_is_dir, returns_false_for_file)
+{
+    EXPECT_FALSE(Path::is_dir("test/src/test_Path.cc"));
+}
+
+TEST(Path_is_dir, returns_false_for_nonexistent_path)
+{
+    EXPECT_FALSE(Path::is_dir("non.existent"));
+}