How to escape multiline regex text to valid json?

Question

Value Year (\d+)
Value Timezone (\S+)
Value MonthDay (\d+)
Value Month (\w+)
Value Time (..:..:..)

Start
  ^${Time}.* ${Timezone} \w+ ${Month} ${MonthDay} ${Year} -> Record

This is a template for texfsm which does parsing of cli based responses with a regex template. Heres the return from javascripts json.stringify

{"template":"Value Year (\\d+)\nValue Timezone (\\S+)\nValue MonthDay (\\d+)\nValue Month (\\w+)\nValue Time (..:..:..)\n\nStart\n  ^${Time}.* ${Timezone} \\w+ ${Month} ${MonthDay} ${Year} -> Record"}

I want to write this template on the front end and then send it to my server for processing. I've used json.stringify() but when try and use json.loads() in python it compains about improperly escaped characters.

ValueError: Invalid \escape: line 1 column 83 (char 82)

How can I properly escape this template for json to then unescape it and use it on my server in python?

--

As a side note.

I've seen here how to escape regex ( Is there a RegExp.escape function in Javascript?) though I'm a bit unsure on how to unescape it.

That probably would be helpful :D, just updated the post with it. @Anonymous — Justin, Jul 04 '18 at 14:58

score 0 · Answer 1 · answered Jul 04 '18 at 16:28

0

You have to escape all dollar sign characters. Change all $ with \$

answered Jul 04 '18 at 16:28

Henok Tesfaye

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Cool. I’ll check that out and let you know what happens. – Justin Jul 05 '18 at 03:25

How to escape multiline regex text to valid json?

1 Answers1