Discussion on: How I can extract words from strings using regular expressions?

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Replies for: Yes, I am using JS and Node.js. Yes, I can use lib from npm. Can you suggest to me? I am a junior developer. Joined 1 month ago. You saved me. T...

Look output now

Operands [
  '(',
  '"type":"Nanoheal"',
  'AND',
  '(',
  '"specialFields.email":"prathameshmore@gmail.com"',
  'OR',
  '"specialFields.address":"Jaysingpur"',
  ')'
]
Generate [
  '"specialFields.address":"Jaysingpur"',
  'OR',
  '"specialFields.email":"prathameshmore@gmail.com"'
]
Filter {"$or":[{"specialFields.address":"Jaysingpur"},{"specialFields.email":"prathameshmore@gmail.com"}]}

Prathamesh More • Nov 24 '20

Filter is final output

Mihail Malo • Nov 24 '20

Nah, you're good.

But for correct treatment of strings, such as if "ty\"pe": "Pe\"rson" is allowed, you should look at using a proper tokenizer, for example moo: github.com/no-context/moo#states (see how they match string escape here!)
You can then take tokens from this tokenizer yourself, or give it to for example nearley: nearley.js.org/docs/tokenizers

I suggest you read the documentation for these two libraries later today when you have time, you will then be a head above most people in tasks where custom text formats need to be parsed.

Prathamesh More • Nov 24 '20

Thanks Mihail for such valuable time.

Prathamesh More • Nov 24 '20 • Edited

How I can modify the Regex so can support for > ,<, <=,>=, = and != .

E.g.

(("assetType": "Application" AND "assetType"> "Application" ) OR ("assetType": "AccessKey" OR "assetType": "Google"))

Prathamesh More • Nov 24 '20

This is working

(?:[()]|AND|OR|"[^"]*"\s*:*>*[<|>=|<=|!=|=]*\s*"[^"]*")