Good localtime friends,

Given a large 1000+ line file with the following format (flexible here):

Collection=>168245 ImageCount=>6 Status=>SI Missing=>1,3 Modified=>01/
+18/2012 11:14:30
Collection=>161745 ImageCount=>6 Status=>I Missing=>2,3 Modified=>01/1
+8/2012 11:16:38
Collection=>162451 ImageCount=>6 Status=>SC Missing=> Modified=>01/20/
+2012 11:16:38
Collection=>117481 ImageCount=>8 Status=>C Missing=> Modified=>01/18/2
+011 7:16:38
...
[download]

What would be the best way to extract all the information into a hash so that I can can perform sorts based on Collection, Status, and Modified?

Some caveats:
1)Collection would be the db equivalent of an unique id.
2)I cannot use a database or non-core modules.
3)I will dynamically build web pages displaying collection information on a table row based upon a timeframe a user requests, so I will have to play with dates a bit.
4)The creation of the file containing the format about is done in the background, so anything I can do to speed up fetching/sorting specific to file format etc would be worth considering.

Thanks for your advice,
hok