[Answered] Retrieve a set of rows from text file

[knob]

Good evening !

I would like to retrieve all lines from string1 to string2, string3 to string4 and string5 to string6.
The file is 3000+ lines and the strings has no fixed line number.

Could you tell me a good approach to retrieve these set of rows ?
Thanks !

  .
  .
  string1
  .
  .
  string2
  .
  .
  .
  .
  string3
  .
  string4
  .
  .
  .
  .
  string5
  .
  .
  string6
  .
  .

[Gribouillis]

Could you tell me a good approach to retrieve these set of rows ?

I suggest to read the file as a sequence of lines and compare the lines with the given strings.

[bowlofred]

I would create a "toggle" tracking whether you are "inside" or "outside". An iterator for the list of sentinel lines would be helpful as well.

Then loop over all the lines. If you're "inside", print the line. If the line matches your next sentinel, flip the toggle.

[ibreeden]

The question has a lot in common with this thread: Extract a string between 2 words from a text file. Please have look and see if this helps you along.

[knob]

Thank you ibreeden and bowlofred for the suggestions and reference !
I was able to adapt the code provided as example and it worked fine !

Thank you !