updated filesystem and exception api

include/fc/exception.hpp

@@ -3,6 +3,11 @@
 #include <fc/shared_ptr.hpp>
 #include <fc/string.hpp>
 
+// TODO: Remove boost exception dependency here!!
+// TODO: Remove boost format dependency here!!
+#include <boost/format.hpp>
+#include <boost/exception/all.hpp>
+
 // provided for easy integration with boost.
 namespace boost { class exception_ptr; }
 
@@ -46,9 +51,19 @@ namespace fc {
   }
   void          rethrow_exception( const exception_ptr& e );
 
-} // namespace fc 
 
-#define FC_THROW( X, ... ) throw (X) 
+  typedef boost::error_info<struct err_msg_,std::string> err_msg;
+  struct exception : public virtual boost::exception, public virtual std::exception {
+      const char* what()const throw()     { return "exception";                     }
+      virtual void       rethrow()const   { BOOST_THROW_EXCEPTION(*this);                  } 
+      const std::string& message()const   { return *boost::get_error_info<fc::err_msg>(*this); }
+  };
+} // namespace fc 
+#define FC_THROW(X,...) throw X
+#define FC_THROW_MSG( MSG, ... ) \
+  do { \
+    BOOST_THROW_EXCEPTION( fc::exception() << fc::err_msg( (boost::format( MSG ) __VA_ARGS__ ).str() ) );\
+  } while(0)
 
 
 #endif // _FC_EXCEPTION_HPP_

include/fc/filesystem.hpp

@@ -25,17 +25,23 @@ namespace fc {
 
       path& operator /=( const fc::path& );
       friend path operator /( const fc::path& p, const fc::path& );
+      friend bool operator ==( const fc::path& p, const fc::path& );
+      friend bool operator !=( const fc::path& p, const fc::path& );
 
       operator boost::filesystem::path& ();
       operator const boost::filesystem::path& ()const;
 
+      fc::path   filename()const;
       fc::string string()const;
     private:
       fwd<boost::filesystem::path,8> _p; 
   };
 
   bool     exists( const path& p );
+  bool     is_directory( const path& p );
+  bool     is_regular( const path& p );
   void     create_directories( const path& p );
+  uint64_t file_size( const path& p );
 }
 
 #endif // _FC_FILESYSTEM_HPP_

src/filesystem.cpp

@@ -30,6 +30,9 @@ namespace fc {
     return *this;
    }
 
+   bool operator ==( const fc::path& l, const fc::path& r ) { return *l._p == *r._p; }
+   bool operator !=( const fc::path& l, const fc::path& r ) { return *l._p != *r._p; }
+
    path& path::operator /=( const fc::path& p ) {
       *_p /= *p._p;
       return *this;
@@ -50,8 +53,14 @@ namespace fc {
    fc::string path::string()const {
     return _p->string().c_str();
    }
+   fc::path path::filename()const {
+    return _p->filename();
+   }
 
 
   bool exists( const path& p ) { return boost::filesystem::exists(p); }
   void create_directories( const path& p ) { boost::filesystem::create_directories(p); }
+  bool is_directory( const path& p ) { return boost::filesystem::is_directory(p); }
+  bool is_regular( const path& p ) { return boost::filesystem::is_regular(p); }
+  uint64_t file_size( const path& p ) { return boost::filesystem::file_size(p); }
 }