fileutils: add isDirectory

The method returns true if given path is a directory filesystem entry

Refs #68196

Change-Id: I983b23aec24e30321483b3f90d0ef9ccacbc515f

src/fileutils.cpp

@@ -214,6 +214,14 @@ expand_path(const std::string &path)
 #endif
 }
 
+bool isDirectory(const std::string& path)
+{
+    struct stat s;
+    if (stat(path.c_str(), &s) == 0)
+        return s.st_mode & S_IFDIR;
+    return false;
+}
+
 bool isDirectoryWritable(const std::string &directory)
 {
     return access(directory.c_str(), W_OK) == 0;

src/fileutils.h

@@ -67,6 +67,8 @@ namespace ring { namespace fileutils {
     bool recursive_mkdir(const std::string& path);
 #endif
 
+    bool isDirectory(const std::string& path);
+
     /**
      * Read content of the directory.
      * The result is a list of full paths of files in the directory,