Extracting strings between two Regex expression -

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i have string (log file), want extract text between 2 strings (multiple instances).

this text have:

++ planning iterations of demand 337 ++ =========================================   demand: 337   event: 1189.001   object/state: 7058/0   tier: 0   start: 1608130700   duration: 90   at: 19-7-2016 16:19:36  demand: 337   event: 1190.001   object/state: 7059/0   tier: 0   start: 1608130830   duration: 330   at: 19-7-2016 16:19:36  demand: 337   event: 1191.001   object/state: 7060/0   tier: 0   start: 1608140000   duration: 360   at: 19-7-2016 16:19:36  ++ event plan of demand 337 ++ ===============================  event_time(1242.001,1,1609070800,1609071430) event_time(1241.001,1,1609060800,1609061430) event_time(1240.001,1,1609050800,1609051430)   ++ planning iterations of demand 174 ++ =========================================   demand: 174   event: 212.001   object/state: 6948/0   tier: 0   start: 1609010800   duration: 390   at: 19-7-2016 16:19:38  demand: 174   event: 213.001   object/state: 6949/0   tier: 0   start: 1609020800   duration: 390   at: 19-7-2016 16:19:38  ++ event plan of demand 174 ++ ===============================  event_time(213.001,1,1609020800,1609021430) event_time(212.001,1,1609010800,1609011430)

i want every thing between 

++ planning iterations of demand 337 ++ =========================================

and

++ event plan of demand 174 ++ ===============================

the results expect is:

demand: 337   event: 1189.001   object/state: 7058/0   tier: 0   start: 1608130700   duration: 90   at: 19-7-2016 16:19:36 demand: 337   event: 1190.001   object/state: 7059/0   tier: 0   start: 1608130830   duration: 330   at: 19-7-2016 16:19:36 demand: 337   event: 1191.001   object/state: 7060/0   tier: 0   start: 1608140000   duration: 360   at: 19-7-2016 16:19:36 demand: 174   event: 212.001   object/state: 6948/0   tier: 0   start: 1609010800   duration: 390   at: 19-7-2016 16:19:38 demand: 174   event: 213.001   object/state: 6949/0   tier: 0   start: 1609020800   duration: 390   at: 19-7-2016 16:19:38

i tried solved myself , got point, returns first match end of text.

this regular expression used:

demand:(?s)(.*)[+][+]

online example

i think best way find demand: ... lines.

you following regex:

(?m)demand:\s+.*$

this regex finds 1 line of type want. need use function in whatever language/library use searches strings match regex in text.

the (?m) @ beginning sets m option, stands multiline, $ match end of line , not end of entire txt.

after regex quite simple. searches demmand: followed @ least 1 space, until end of line. regex default doesn't expand . search across lines, , limited line scans. had expanded (like using option s inside preceding parenthesis) have had update regex (?m)demand:\s+.*?$ - add ? symbol make search until end of line non greedy.


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