Notepad++ Plugin for Swift Messages

NppSWIFT is a plugin for Notepad++ which will convert the machine readable text into something slightly more friendly for humans.

Before MT950 Message Conversion

After MT950 Message Conversion

Overview
Getting Started
Supported Messages
Examples

Getting Started

Do one of the following depending on your version of Notepad++

Download the x86 SWIFTPlugin.dll and place it in the C:\program files (x86)\notepad++\plugins\ folder.
Download the x64 SWIFTPlugin.dll and place it in the C:\program files\notepad++\plugins\ folder.

Supported Messages

MT950

Examples

With the message(s) as the active tab in Notepad++, click the following:

Plugins
SWIFT
MT950

Before processing:

{1:F01SAESVAV0AXXX0466020565}{2:O9501552070522LRLRXXXX4A0700005915090705221752N}{3:{108:MT950 007 OF 030}}
{4::20:02711:25:210057665066:28C:00196:60F:C000103HKD672,:61:000103D642,NRTI9999CHECK NO. 57650:62F:C000103HKD30,-}
{5:{CHK:22ED16B18106}{TNG:}}

After processing:

{1:F01SAESVAV0AXXX0466020565}
{2:O9501552070522LRLRXXXX4A0700005915090705221752N}
transaction_reference_number:02711
account_identification_statement:210057665066
statement_sequence_number:00196
opening_balance:C000103HKD672,
	debit_or_credit:C
	date:000103
	currency:HKD
	amount:672,
statement_line:000103D642
	debit_or_credit:D
	value_date:000103
	entry_date:
	funds_code:
	amount:642
	transaction_type:
	reference_account_owner:
	refernece_institution:
	supplementary_details:
closing_balance:C000103HKD30,
	debit_or_credit:C
	date:000103
	currency:HKD
	amount:30,
-}
{5:{CHK:22ED16B18106}{TNG:}}

Considerations and Thoughts for Improvements

While this was affective for my purposes at work, there are many way in which this script can be improved upon.

Dehuman the message! The ability to seemlessly switch between human and machine version would be super neat!
Handling and parsing of messages when non-mandatory fields are filled in (MT950 field 61 for example).
Remove looping over each field and message and update to a regex replace which would apply to all matching values. This should be much more efficient in theory.
The datastructure for the SWIFT regexs' is setup in such a way that field 61 for an MT950 contains the same information and rules as it would for an MT940. I did not confirm this is always the case but if someone were to expand the compatibility of more messages, field consistency should be thoroughly checked.
Active page is copied into memory and transformed. Exploration of Np++ features would provide more options and potential for optimizations - maybe working on sections is more efficient?
Informative error messages. If format is incorrect, Np++ gives generic error.

joshuabragge/NppSWIFT