Mirth transformer script to take a base-64 encoded rtf and convert it to a base-64 encoded PDF

MirthrtfToPdf.js

// ===============================
// AUTHOR:			Matt Blanton
// CREATE DATE:		1/7/2016
// PURPOSE:			Takes encoded rtf data from HL7 message, converts it to pdf, then places the encoded pdf data into the message
// SPECIAL NOTES:	Open/LibreOffice must be installed and JODConverter + libs must be placed in Mirth Connect/custom-lib/ - I get best results using OpenOffice 4 for RTF-PDF
// ===============================
// Change History:
//
//==================================

var channelName = Packages.com.mirth.connect.server.controllers.ChannelController.getInstance().getDeployedChannelById(channelId).getName();
//File name format is PID-Date/Time(in YYYYMMDDhhmmss)-OBX#
var fileNameString = msg['PID']['PID.3']['PID.3.1'].toString() + '-' + msg['MSH']['MSH.7']['MSH.7.1'].toString();
var resultLocation = 'C:\\Program Files\\Mirth Connect\\appdata\\temp\\';

for (var i=0; i<msg['OBX'].length(); i++) {
	
	var msgRtfString = msg['OBX'][i]['OBX.5']['OBX.5.1'].toString();

	logger.info("Decoding OBX RTF string")
	try {
		var decodedRtfString = FileUtil.decode(msgRtfString);
	}
	catch(e) {
		
		logger.error(channelName + ' failed to decode OBX RTF string because: ' + e);
		throw(e);
	}
	var rtfLocation = resultLocation + fileNameString + '-' + i + '.rtf';
	logger.info("Writing RTF to file")
	try {
		FileUtil.write(rtfLocation, false, decodedRtfString);
	}
	catch(e) {
		logger.error(channelName + ' failed to write RTF file because: ' + e);
		throw(e);
	}
	
	var pdfLocation = resultLocation + fileNameString + '-' + i + '.pdf';
	
	//args to feed JODConverter
	var argArray = new Array();
		argArray[0] = rtfLocation;
		argArray[1] = pdfLocation;
	
	logger.info("Converting RTF to PDF");
	try {
		var jodConv = Packages.org.artofsolving.jodconverter.cli.Convert;
		logger.debug(Packages.org.artofsolving.jodconverter.cli.Convert.main(argArray));
	}
	catch(e) {
		logger.error(channelName + ' failed to convert to PDF because: ' + e);
		throw(e);
	}
	
	logger.info("Encoding PDF");
	try {
		var encodedPdf = Packages.org.apache.commons.codec.binary.Base64.encodeBase64String(FileUtil.readBytes(pdfLocation));
	}
	catch(e) {
		logger.error(channelName + ' failed to encode PDF because: ' + e);
		throw(e);
	}

	logger.info('Placing encoded PDF in transformed message');
	tmp['OBX'][i]['OBX.5']['OBX.5.1'] = 'application^PDF^^Base64^' + encodedPdf.toString();
	
	//may not be necessary, Mirth MAY delete files in $installDir/appdata/temp automatically
	logger.info("Deleting files");
	try {
		var file = Packages.java.io.File(rtfLocation);
		file["delete"]();
		file = Packages.java.io.File(pdfLocation);
		file["delete"]();
	}
	catch(e) {
		logger.error('Files failed to delete because: ' + e);
	}
}

I am looking to utilize this code. Do you place this in the source transformer? Also what version of jodconverter are you using 2 or 3?

@thenealmiller, sorry for the late reply. It's placed in the source transformer. I believe it was version 3. I'm not at that company anymore, so unfortunately I can't check for you :(