tree aea5379ca96c99ec14f1c5c8dc202b7b5b36ca47
parent b4cd267db30c152245e6308598e0066d87c5c55d
author Colin Cross <ccross@android.com> 1337643345 -0700
committer Colin Cross <ccross@android.com> 1341896977 -0700

libsparse: add callback output file type

Add a new output file subclass that will call a callback for
each block as it is written.  Will be used to measure the space
used by each sparse block to allow resparsing files.

Also add sparse_file_callback, which will write out a sparse
file by calling the provided write function.

Change-Id: I18707bd9c357b68da319cc07982e93d1c2b2bee2