Function BinaryDecoder.doReadItemCount

Returns the number of items to follow in the current array or map. Returns 0 if there are no more items in the current array and the array/map has ended. Arrays are encoded as a series of blocks. Each block consists of a long count value, followed by that many array items. A block with count zero indicates the end of the array. If a block's count is negative, its absolute value is used, and the count is followed immediately by a long block size indicating the number of bytes in the block.

Throws

IOException If the first byte cannot be read for any reason other than the end of the file, if the input stream has been closed, or if some other I/O error occurs.