From: Fabio Vitale <fabio@...>
Date: 2006-07-17T19:54:35+09:00
Subject: How can I parse binary files?

I've the need to parse a binary file with the following structure:
How can I accomplish this in Ruby?

Header (36 bytes):
 - Version (4 byte unsigned integer) currently 1
 - UIDValidity (4 byte unsigned integer)
 - UIDNext (4 byte unsigned integer)
 - Last Write Counter (4 byte unsigned integer)
 - the rest unused

Message data (36 bytes per message):
 - Filename (23 bytes including terminating NUL character)
 - Flags (1 byte bitmask)
 - UID (4 byte unsigned integer)
 - Message size (4 byte unsigned integer)
 - Date (4 byte time_t value)

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