Commit 167c54a2 authored by Jakub Klinkovský's avatar Jakub Klinkovský Committed by Jakub Klinkovský
Browse files

Added File::ignore

parent 25975561

src/TNL/File.h

+12 −0
Original line number Diff line number Diff line
@@ -140,6 +140,18 @@ public: 
   void

   save( const Type* buffer, std::streamsize elements = 1 );



   /**

    * \brief Extracts and discards characters from the file.

    *

    * Throws \ref std::ios_base::failure on failure.

    *

    * \tparam SourceType type of data stored on the file,

    * \param elements number of elements to be read and ignored.

    */

   template< typename SourceType >

   void

   ignore( std::streamsize elements = 1 );



protected:

   // implementation for all allocators which allocate data accessible from host

   template< typename Type,

src/TNL/File.hpp

+9 −0
Original line number Diff line number Diff line
@@ -234,6 +234,15 @@ File::save_impl( const Type* buffer, std::streamsize elements ) 
#endif

}



template< typename SourceType >

void

File::ignore( std::streamsize elements )

{

   // use seekg instead of ignore for efficiency

   // https://stackoverflow.com/a/31246560

   file.seekg( sizeof( SourceType ) * elements, std::ios_base::cur );

}



inline bool

fileExists( const String& fileName )

{

src/UnitTests/FileTest.h

+4 −1
Original line number Diff line number Diff line
@@ -18,11 +18,13 @@ TEST( FileTest, WriteAndRead ) 
   File file;

   ASSERT_NO_THROW( file.open( String( TEST_FILE_NAME ), std::ios_base::out ) );



   int intData( 5 );

   int intData = 5;

   double doubleData[ 3 ] = { 1.0, 2.0, 3.0 };

   const int ignoredValue = 42;

   const double constDoubleData = 3.14;

   ASSERT_NO_THROW( file.save( &intData ) );

   ASSERT_NO_THROW( file.save( doubleData, 3 ) );

   ASSERT_NO_THROW( file.save( &ignoredValue ) );

   ASSERT_NO_THROW( file.save( &constDoubleData ) );

   ASSERT_NO_THROW( file.close() );
@@ -32,6 +34,7 @@ TEST( FileTest, WriteAndRead ) 
   double newConstDoubleData;

   ASSERT_NO_THROW( file.load( &newIntData, 1 ) );

   ASSERT_NO_THROW( file.load( newDoubleData, 3 ) );

   ASSERT_NO_THROW( file.ignore< decltype(ignoredValue) >( 1 ) );

   ASSERT_NO_THROW( file.load( &newConstDoubleData, 1 ) );



   EXPECT_EQ( newIntData, intData );