#152 Reading from Zip file in chunks.

[Martin]

I created a large map which resulted in some search files of a size larger than 4 MB.
My mobile denied to read any file from zip after trying to read a file of 4 MB of size when trying to search.

I resolved the problem by changing the call for reading the file from zip from one call to many calls of a maximum read size of 64K.

A possibility to reduce the maximal search file size for faster search would also be very nice.

[Martin]