[O] Timesheet from clocking data

[Aankhen]

Greetings,

Given an Org file with clocking data, is there a way to generate a
timesheet?  This would complement the clock table by focusing on the
timings rather than the headings.

As I haven’t come across anything like this as yet, I’ll try to give
an example (manually-created) to show what I mean, in case someone
more familiar with Org can tell me something about it:

,----[ Org tree ]
| * Foo
|   :CLOCK:
|   CLOCK: [2011-04-19 Tue 18:50]--[2011-04-19 Tue 20:30] =>  1:40
|   CLOCK: [2011-04-18 Mon 20:15]--[2011-04-18 Mon 21:00] =>  0:45
|   CLOCK: [2011-04-21 Thu 01:03]--[2011-04-21 Thu 02:03] =>  1:00
|   :END:
|   CLOCK: [2011-04-19 Tue 12:30]--[2011-04-19 Tue 18:06] =>  5:36
|
|
| *** Bar
|     :CLOCK:
|     CLOCK: [2011-04-19 Tue 18:06]--[2011-04-19 Tue 18:50] =>  0:44
|     CLOCK: [2011-04-22 Fri 01:00]--[2011-04-22 Fri 01:05] =>  0:05
|     :END:
|
| *** Baz
|     :CLOCK:
|     CLOCK: [2011-04-21 Thu 03:10]--[2011-04-21 Thu 04:00] =>  0:50
|     :END:
`----

(Please ignore the very strange timings.  I just threw together
whatever I could for the sake of the example. :-)

The table:

#+BEGIN: timesheet :group day :scope subtree :block thisweek

Timesheet
| Entry            | Time    |       |
|------------------+---------+-------|
| *2011-40-18 Mon* | *00:45* |       |
|  20:15–21:00     |         | 00:45 |
| *2011-04-19 Tue* | *08:00* |       |
|  12:30–20:30     |         | 08:00 |
| *2011-04-21 Thu* | *01:50* |       |
|  01:03–02:03     |         | 01:00 |
|  03:10–04:00     |         | 00:50 |
| *2011-04-22 Fri* | *01:00* |       |
|  01:00–01:05     |         | 01:05 |
|------------------+---------+-------|
| Total            | 11:35   |       |

#+END:

As you can see, each day with any time clocked gets one entry in the
table.  Underneath that entry are all the non-contiguous blocks of
time clocked in during that day.  Clocked times from subtrees are
summed up and subsumed by their parents, so in the example given,
there is one single contiguous block from 12:30 to 20:30 on Tuesday,
whereas there are two entries for the non-contiguous blocks on
Thursday.

I really have no idea where to begin in order to obtain this sort of
report, if it is even possible.  Any pointers would be most
appreciated!

Thanks,
Aankhen