public void BuildPage(long buildPageNumber, long position, byte[] pageBuffer, int offset)
{
lock (this) {
File.Read(position, buffer, 0, 36);
var type = BytesUtil.ReadInt8(buffer, 0);
var resourceId = BytesUtil.ReadInt8(buffer, 12);
var pageNumber = BytesUtil.ReadInt8(buffer, 20);
var pageOffset = BytesUtil.ReadInt4(buffer, 28);
var pageLength = BytesUtil.ReadInt4(buffer, 32);
// Some asserts,
if (type != 1)
{
throw new IOException(String.Format("Invalid page type '{0}' at position '{1}'", type, position));
}
if (pageNumber != buildPageNumber)
{
throw new IOException(String.Format(
"The page number '{0}' does not match the number of the page to build ('{1}')", pageNumber, buildPageNumber));
}
// Read the content.
File.Read(position + 36, pageBuffer, offset + pageOffset, pageLength);
}
}