Python Multiline Regex Search in Binary File

Asked Aug 10 '18 at 17:40

Active Aug 10 '18 at 17:40

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I'm trying to figure out a way to locate multi-line strings embedded in a binary file. The code I've got will identify non-multi-line versions of the pattern, but not the multi-line versions.

I've tried this with with re.findall():

import re
a = open('file', 'rb')
b = a.read()
c = re.findall(b'[<]{2}.*?[>]{2}', b, re.MULTILINE)

And with re.search():

import re
a = open('file', 'rb')
b = a.read()
c = re.search(b'[<]{2}.*?[>]{2}', b, re.MULTILINE)
c.group()

In each case, the code will return non-multi-line substrings, but not those where a \n character appears in the string.

Any ideas?

asked Aug 10 '18 at 17:40

nxl4

2

Replace `re.MULTILINE` with `re.DOTALL` – Josh Withee Aug 10 '18 at 17:47
1

`re.MULTILINE` affects the meaning of `^` and `$`, allowing these to anchor linewise rather than stringwise. – Steven Rumbalski Aug 10 '18 at 17:48
Someone with a background in Ruby? – revo Aug 10 '18 at 18:14
The `re.DOTALL` switch did the trick, @Marathon55. Thank you! – nxl4 Aug 10 '18 at 18:52

Python Multiline Regex Search in Binary File

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