/// <summary>
/// Returns the chunks of current file that are NOT identical with the other file
/// </summary>
/// <param name="file">File to compare</param>
/// <param name="chunkSize">Chunk size (Bytes)</param>
/// <returns>Returns the chunks of current file that are NOT identical with the other file</returns>
public IEnumerable<QuickIOFileChunk> GetFileChunksUnequal( QuickIOFileInfo file, Int32 chunkSize = DefaultChunkSize )
{
var en1 = GetFileChunksEnumerator( chunkSize );
var en2 = file.GetFileChunksEnumerator( chunkSize );
while ( en1.MoveNext( ) )
{
var mn2 = en2.MoveNext( );
// EOF of file2?
if ( !mn2 )
{
// current chunk must be unequal
yield return en1.Current;
}
else
{
// check of the chunks are unequal
if ( !en1.Current.ChunkEquals( en2.Current ) )
{
// unequal
yield return en1.Current;
}
}
}
}
/// <summary>
/// Returns the chunks of current file that are NOT identical with the other file
/// </summary>
/// <param name="file">File to compare</param>
/// <param name="chunkSize">Chunk size (Bytes)</param>
/// <returns>Returns the chunks of current file that are NOT identical with the other file</returns>
public IEnumerable <QuickIOFileChunk> GetFileChunksUnequal(QuickIOFileInfo file, Int32 chunkSize = DefaultChunkSize)
{
var en1 = GetFileChunksEnumerator(chunkSize);
var en2 = file.GetFileChunksEnumerator(chunkSize);
while (en1.MoveNext( ))
{
var mn2 = en2.MoveNext( );
// EOF of file2?
if (!mn2)
{
// current chunk must be unequal
yield return(en1.Current);
}
else
{
// check of the chunks are unequal
if (!en1.Current.ChunkEquals(en2.Current))
{
// unequal
yield return(en1.Current);
}
}
}
}
/// <summary>
/// Checks if both file contents are equal.
/// Opens both files for read and breaks on first unequal chunk.
/// </summary>
/// <param name="file">File to compare</param>
/// <param name="chunkSize">Chunk size (Bytes)</param>
/// <returns>true if contents are equal</returns>
public Boolean IsEqualContents(QuickIOFileInfo file, Int32 chunkSize = DefaultChunkSize)
{
var en1 = GetFileChunksEnumerator(chunkSize);
var en2 = file.GetFileChunksEnumerator(chunkSize);
while (true)
{
// Go to next element
var mn1 = en1.MoveNext( );
var mn2 = en2.MoveNext( );
// check if next element exists
if (mn1 != mn2)
{
// collections count diff
return(false);
}
// no more elements in both collections
if (!mn1)
{
return(true);
}
// check chunks
var chunk1 = en1.Current;
var chunk2 = en2.Current;
if (!chunk1.ChunkEquals(chunk2))
{
return(false);
}
}
}
/// <summary>
/// Returns the chunks of current file that are identical with the other file
/// </summary>
/// <param name="file">File to compare</param>
/// <param name="chunkSize">Chunk size (Bytes)</param>
/// <returns>Returns the chunks of current file that are identical with the other file</returns>
public IEnumerable<QuickIOFileChunk> GetFileChunksEqual( QuickIOFileInfo file, Int32 chunkSize = DefaultChunkSize )
{
var en1 = GetFileChunksEnumerator( chunkSize );
var en2 = file.GetFileChunksEnumerator( chunkSize );
while ( en1.MoveNext( ) && en2.MoveNext( ) )
{
// check of the chunks are equal
if ( en1.Current.ChunkEquals( en2.Current ) )
{
// equal
yield return en1.Current;
}
}
}
/// <summary>
/// Returns the chunks of current file that are identical with the other file
/// </summary>
/// <param name="file">File to compare</param>
/// <param name="chunkSize">Chunk size (Bytes)</param>
/// <returns>Returns the chunks of current file that are identical with the other file</returns>
public IEnumerable <QuickIOFileChunk> GetFileChunksEqual(QuickIOFileInfo file, Int32 chunkSize = DefaultChunkSize)
{
var en1 = GetFileChunksEnumerator(chunkSize);
var en2 = file.GetFileChunksEnumerator(chunkSize);
while (en1.MoveNext( ) && en2.MoveNext( ))
{
// check of the chunks are equal
if (en1.Current.ChunkEquals(en2.Current))
{
// equal
yield return(en1.Current);
}
}
}
/// <summary>
/// Checks if both file contents are equal.
/// Opens both files for read and breaks on first unequal chunk.
/// </summary>
/// <param name="file">File to compare</param>
/// <param name="chunkSize">Chunk size (Bytes)</param>
/// <returns>true if contents are equal</returns>
public Boolean IsEqualContents( QuickIOFileInfo file, Int32 chunkSize = DefaultChunkSize )
{
var en1 = GetFileChunksEnumerator( chunkSize );
var en2 = file.GetFileChunksEnumerator( chunkSize );
while ( true )
{
// Go to next element
var mn1 = en1.MoveNext( );
var mn2 = en2.MoveNext( );
// check if next element exists
if ( mn1 != mn2 )
{
// collections count diff
return false;
}
// no more elements in both collections
if ( !mn1 )
{
return true;
}
// check chunks
var chunk1 = en1.Current;
var chunk2 = en2.Current;
if ( !chunk1.ChunkEquals( chunk2 ) )
{
return false;
}
}
}