[Boost-users] how to use input_filter to read data from a file?

Subject: [Boost-users] how to use input_filter to read data from a file?
From: eial_at_[hidden]
Date: 2009-11-23 14:47:15

hello all.
I have a code that gets a line, encodes it in base64 and save it to a file and another part that opens the same file inorder to read the data, for some reason, the get function at line 99 returns an empty string. how can I solve this problem?
complete code can be found at http://pastebin.com/f62d2fbf5

thanks