I am thinking about some market trading and decided to split all my trading into separate operations - this way I could track which ones are good investments and which ones were a waste of time and isk. One operation would be a separate item or a set of items within certain location (i.e. "Flipping Hulks in Jita" or "Manipulating cap recharger prices in Domain"). The app would automatically pull my market transaction logs and show me how much profit (or loss) I had within the operation so far (i.e. "You've already got 200 gazzilions profit on this operation and can just dump the rest to sell orders" or "You already lost 20 millions, but if you manage to turn in all your sell orders you'll have 300 billions profit").

I wonder if there is an application which would help me doing such tracking, or I should write one myself.

I know there are lots of wallet tracking programs but most are written in .Net which doesn't work under Linux (neither in mono, nor under wine). I'd like something cross-platform.