I would like get all data between two strings using regex and python

Question

I would like get all data between two strings

I want all text from 'config firewall policy' to 'end' (From 'Configure Firewall Policy' to the first line starting with 'End' )

Sample of initial text:

config firewall policy
    edit 1
        set name "demo"
        set uuid demo
        set srcintf "demo-b-demo"
        set dstintf "demo"
        set srcaddr "demo.demo.demo.110" "host_10.demo.demo.129"
    next
    edit 2
        set name "demo rule"
        set uuid demo-c532-51eb-end-demo
        set srcintf "end-demo-demo"
        set dstintf "demo"
        set srcaddr "demo.40.demo.129" "demo.40.demo.110"
    next
end
config firewall policy
    edit 3
        set name "VIP-demo"
        set uuid demo-d428-end-demo-demo
        set srcintf "demo-b-inside"
        set dstintf "demo"
        set srcaddr "demo.demo.128.demo" "demo.demo.128.demo"
    next
end

Result must be:

edit 1
    set name "demo"
    set uuid demo
    set srcintf "demo-b-demo"
    set dstintf "demo"
    set srcaddr "demo.demo.demo.110" "host_10.demo.demo.129"
next
edit 2
    set name "demo rule"
    set uuid demo-c532-51eb-end-demo
    set srcintf "end-demo-demo"
    set dstintf "demo"
    set srcaddr "demo.40.demo.129" "demo.40.demo.110"
next

I tried something in Python result = re.findall('config firewall policy\s([\s\S]*?)end', str(abovetext))

Wiktor Stribiżew · Accepted Answer · 2021-07-30 07:45:48Z

1

You can leverage the fact these delimiters are on separate lines.

That means, you can use

re.findall(r'(?m)^config firewall policy\r?\n\s*([\s\S]*?)\s*\nend$', text)

See this regex demo.

Details:

(?m) - the re.M inline flag variant
^ - start of a line
config firewall policy - a string of words
\r?\n - CRLF or an LF line break sequence
\s* - zero or more whitespaces
([\s\S]*?) - Group 1: any zero or more chars, as few as possible
\s* - zero or more whitespaces
\n - a newline
end$ - a line with only end text on it.

answered Jul 30, 2021 at 7:45

Wiktor Stribiżew

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