Extract (parse) amount and description from BIZ (Transaction) sms

Question

I am doing below steps.

1. match sms with regex

2. if contains specified keyword then get values from sms body like amount,description (reason

Answer 1

To detect any transactional message in android :

"(?=.*[Aa]ccount.*|.*[Aa]/[Cc].*|.*[Aa][Cc][Cc][Tt].*|.*[Cc][Aa][Rr][Dd].*)(?=.*[Cc]redit.*|.*[Dd]ebit.*)(?=.*[Ii][Nn][Rr].*|.*[Rr][Ss].*)"

tested on several bank messages

Answer 2

For finding out amount from bank transaction message.

(?i)(?:(?:RS|INR|MRP)\.?\s?)(\d+(:?\,\d+)?(\,\d+)?(\.\d{1,2})?)

For finding out merchant name from bank transaction message.

(?i)(?:\sat\s|in\*)([A-Za-z0-9]*\s?-?\s?[A-Za-z0-9]*\s?-?\.?)

For finding out card name(debit/credit card) from bank transaction message.

(?i)(?:\smade on|ur|made a\s|in\*)([A-Za-z]*\s?-?\s[A-Za-z]*\s?-?\s[A-Za-z]*\s?-?)

Answer 3

The following two regular expressions helped in finding amount from most of the bank transactions(HDFC, ICICI, ING, KOTAK, SBI, CANARA, PNB):

[Ii][Nn][Rr](\\s*.\\s*\\d*)
[rR][sS](\\s*.\\s*\\d*)

Please comment if you have figured out much better expressions than the above.

Answer 4

In python following Regex can be helpful.

For finding amount in bank messages

[rR][sS]\.?\s[,\d]+\.?\d{0,2}|[iI][nN][rR]\.?\s*[,\d]+\.?\d{0,2}

For finding A/C no

[0-9]*[Xx\*]*[0-9]*[Xx\*]+[0-9]{3,}