I come across quite a few use cases where it would be very useful to take input from a (usually newline-delimited) stream and summarise it in a top-like fashion (see top, iotop, etc). A kind of on-the-fly pivot table.
e.g. Take the log-esque input:
I heard A from unit 1 and it said "Great!" 56
I heard A from unit 2 and it said "Oh no!" 42
I heard C from unit 1 and it said "Waiting for input." 33
I heard B from unit 3 and it said "Stopped." -1
...
From this, we could run a tool with a regex and group indicators:
topify [lineout] [regex] [name #1] [group #1] [name #2] [group #2] [All other columns name position]
where:
lineout is the number of lines before removing it from the display
regex is a regex of the lines to match, complete with group indicators
name #n is a string for the title of column n
group #n is the number of the group in the regex
e.g.
topify '/^I heard ([A-Z]) from unit ([1-9]) and it said "(.*)" ([-0-9]*)$/' Unit 2 Status 1 Message 3 RetVal 4
This would display in an interactive way, such that the columns could be selected/reordered, etc.:
Unit Status Message Retval
1 C Waiting for input. 33
2 A Oh no! 42
3 B Stopped. -1
I understand the brittleness of it, but I'd be really surprised if it hadn't been built before and wanted to check before I go into building it. I also appreciate it isn't particularly complicated to write so maybe everyone has just implemented their own solution...
Has anyone seen a tool like this?
(Please excuse the tags I've used here. I know I may be pushing/breaking the rules of some tags, but this is very generalised. Suggestions welcome.)