├── .github └── workflows │ └── test.yml ├── .gitignore ├── LICENSE ├── README.md ├── examples ├── file.js ├── message.js └── tcp.js ├── lib ├── client │ ├── file-client.js │ └── tcp-client.js ├── connect │ ├── file.js │ ├── proto.js │ └── tcp.js ├── hl7 │ ├── component.js │ ├── delimiters.js │ ├── field.js │ ├── header.js │ ├── message.js │ ├── parser.js │ └── segment.js ├── index.js └── server │ ├── file-server.js │ └── tcp-server.js ├── package-lock.json ├── package.json └── test ├── samples ├── adt.hl7 ├── adt.txt ├── orm.hl7 ├── oru-imm.hl7 └── oru.hl7 ├── setup.js ├── test-connect.js ├── test-hl7.js └── test-server.js /.github/workflows/test.yml: -------------------------------------------------------------------------------- 1 | # This workflow will do a clean installation of node dependencies, cache/restore them, build the source code and run tests across different versions of node 2 | # For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-nodejs 3 | 4 | name: Node.js CI 5 | 6 | on: 7 | push: 8 | branches: [ "*" ] 9 | pull_request: 10 | branches: [ "master" ] 11 | 12 | jobs: 13 | build: 14 | 15 | runs-on: ubuntu-latest 16 | 17 | strategy: 18 | matrix: 19 | node-version: [14.x, 16.x, 18.x] 20 | # See supported Node.js release schedule at https://nodejs.org/en/about/releases/ 21 | 22 | steps: 23 | - uses: actions/checkout@v4 24 | - name: Use Node.js ${{ matrix.node-version }} 25 | uses: actions/setup-node@v3 26 | with: 27 | node-version: ${{ matrix.node-version }} 28 | cache: 'npm' 29 | - run: npm ci 30 | - run: npm run build --if-present 31 | - run: npm test 32 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | node_modules 2 | .DS_Store 3 | *.log 4 | test-import -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | MIT License 2 | 3 | Copyright (c) 2016 Robert Rupp 4 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy 6 | of this software and associated documentation files (the "Software"), to deal 7 | in the Software without restriction, including without limitation the rights 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 9 | copies of the Software, and to permit persons to whom the Software is 10 | furnished to do so, subject to the following conditions: 11 | 12 | The above copyright notice and this permission notice shall be included in all 13 | copies or substantial portions of the Software. 14 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 | SOFTWARE. 22 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # simple-hl7 2 | [![Node.js CI](https://github.com/hitgeek/simple-hl7/actions/workflows/test.yml/badge.svg)](https://github.com/hitgeek/simple-hl7/actions/workflows/test.yml) 3 | 4 | A simple library for creating HL7 middleware, based on connect & express. 5 | 6 | 7 | ```js 8 | var hl7 = require('simple-hl7'); 9 | 10 | ///////////////////SERVER///////////////////// 11 | var app = hl7.tcp(); 12 | 13 | app.use(function(req, res, next) { 14 | //req.msg is the HL7 message 15 | console.log('******message received*****') 16 | console.log(req.msg.log()); 17 | next(); 18 | }) 19 | 20 | app.use(function(req, res, next){ 21 | //res.ack is the ACK 22 | //acks are created automatically 23 | 24 | //send the res.ack back 25 | console.log('******sending ack*****') 26 | res.end() 27 | }) 28 | 29 | app.use(function(err, req, res, next) { 30 | //error handler 31 | //standard error middleware would be 32 | console.log('******ERROR*****') 33 | console.log(err); 34 | var msa = res.ack.getSegment('MSA'); 35 | msa.setField(1, 'AR'); 36 | res.ack.addSegment('ERR', err.message); 37 | res.end(); 38 | }); 39 | 40 | //Listen on port 7777 41 | app.start(7777); //optionally pass encoding here, app.start(1234, 'latin-1'); 42 | ///////////////////SERVER///////////////////// 43 | 44 | ///////////////////CLIENT///////////////////// 45 | var client = hl7.Server.createTcpClient('localhost', 7777); 46 | 47 | //create a message 48 | var msg = new hl7.Message( 49 | "EPIC", 50 | "EPICADT", 51 | "SMS", 52 | "199912271408", 53 | "CHARRIS", 54 | ["ADT", "A04"], //This field has 2 components 55 | "1817457", 56 | "D", 57 | "2.5" 58 | ); 59 | 60 | console.log('******sending message*****') 61 | client.send(msg, function(err, ack) { 62 | console.log('******ack received*****') 63 | console.log(ack.log()); 64 | }); 65 | ///////////////////CLIENT///////////////////// 66 | ``` 67 | 68 | ## Installation 69 | 70 | ```bash 71 | $ npm install simple-hl7 72 | ``` 73 | 74 | ## Features 75 | 76 | * Parser 77 | * Message Builder/Editor API 78 | * Server/Client components for TCP and File System Based Interfaces 79 | 80 | ## Philosophy 81 | Make HL7 interfaces and middleware as easy as express web servers. 82 | 83 | ## Examples 84 | See examples & tests folder on github. 85 | 86 | ## People 87 | Author: Bob Rupp bob@rupp.io 88 | 89 | ## License 90 | MIT 91 | -------------------------------------------------------------------------------- /examples/file.js: -------------------------------------------------------------------------------- 1 | var hl7 = require('../lib'); 2 | var fs = require('fs'); 3 | 4 | ////////////////////SERVER/////////////////// 5 | var app = hl7.file(); 6 | app.use(function(req, res, next) { 7 | console.log('Message Recieved From ' + req.facility); 8 | console.log('Message Event: ' + req.event); 9 | console.log('Message Type: ' + req.type); 10 | next(); 11 | }); 12 | 13 | //create middleware 14 | app.use(function(req, res, next) { 15 | //create middleware for certain message types 16 | if (req.type != 'ADT' || req.event != 'A04') { 17 | return next(); 18 | } 19 | 20 | var pid = req.msg.getSegment('PID'); 21 | var patient = pid.getComponent(5, 2) + ' ' + pid.getComponent(5, 1); 22 | 23 | console.log('Patient Info Is ' + patient); 24 | next(); 25 | }); 26 | 27 | //No ACK with FileClient 28 | // app.use(function(req, res, next) { 29 | // console.log('************sending ack****************') 30 | // res.end(); 31 | // }) 32 | 33 | //Error Handler 34 | app.use(function(err, req, res, next) { 35 | console.log(err); 36 | }); 37 | 38 | 39 | app.start('test-import'); 40 | console.log('tcp interface listening on ' + 7777); 41 | ////////////////////SERVER/////////////////// 42 | 43 | 44 | ////////////////////CLIENT/////////////////// 45 | var parser = new hl7.Parser({segmentSeperator: '\n'}); 46 | var client = hl7.Server.createFileClient('test-import'); 47 | var msg = parser.parseFileSync('test/samples/adt.hl7'); 48 | 49 | 50 | 51 | setTimeout(function() { 52 | client.send(msg, function(err) { 53 | console.log('************sending message****************'); 54 | if (err) { 55 | console.log("ERR: " + err.message); 56 | } else { 57 | //NO ACK for File Client 58 | } 59 | }) 60 | }, 3000) 61 | 62 | 63 | ////////////////////CLIENT/////////////////// 64 | 65 | -------------------------------------------------------------------------------- /examples/message.js: -------------------------------------------------------------------------------- 1 | var hl7 = require('../lib/index.js'); 2 | 3 | /* 4 | The message constructor creates the MSH segment. Each argument is a field. 5 | */ 6 | 7 | var adt = new hl7.Message( 8 | "EPIC", 9 | "EPICADT", 10 | "SMS", 11 | "199912271408", 12 | "CHARRIS", 13 | ["ADT", "A04"] //This field has 2 components 14 | //Keep adding fields 15 | ); 16 | 17 | /* 18 | .addSegment() takes similiar syntax as Message constructor. 19 | The first argument is segment name, and the rest of the arguments are added as fields. 20 | */ 21 | 22 | adt.addSegment("PID", 23 | "", //Blank field 24 | ["0493575", "", "", "2", "", "ID 1"], //Multiple components 25 | "454721", 26 | "", 27 | ["DOE", "JOHN", "", "", "", ""], 28 | "19480203", 29 | new hl7.Field("First", "Second") //REPEATING FIELD 30 | //Keep adding arguments to add more fields 31 | ); 32 | 33 | var pid = adt.getSegment("PID"); 34 | pid.addField(new hl7.Field("First", "Second"), 8); 35 | 36 | 37 | pid.fields.push(new hl7.Field("First", "Second")); 38 | 39 | 40 | adt.addSegment("OBX", 41 | 1, //Blank field 42 | ["JHDL", "HDL Cholesterol (CAD)"], //Multiple components 43 | 1, 44 | 62, 45 | ["CD:289", "mg/dL"], 46 | [">40", "40"] 47 | ); 48 | 49 | adt.addSegment("OBX", 50 | 1, //Blank field 51 | ["JTRIG", "Triglyceride (CAD)"], //Multiple components 52 | 1, 53 | 15, 54 | ["CD:289", "mg/dL"], 55 | ["35-150", "35", "150"] 56 | ); 57 | 58 | 59 | 60 | 61 | console.log(adt.log()); 62 | 63 | /* 64 | MSH|^~\&|EPIC|EPICADT|SMS|199912271408|CHARRIS|ADT^A04 65 | PID||0493575^^^2^^ID 1|454721||DOE^JOHN^^^^|19480203 66 | */ 67 | 68 | console.log('-----The Date of Birth in PID.6 will get updated-----') 69 | 70 | var parser = new hl7.Parser(); 71 | 72 | /* 73 | Parse any HL7 message string, could be from File, TCP Socket, Web Service. 74 | */ 75 | var msg = parser.parse(adt.toString()); 76 | 77 | /* 78 | Message.getSegment() takes the Segment name as argument, and returns a Segment object. 79 | Segment objects expose .setField, .addField, and .removeField 80 | */ 81 | 82 | msg.getSegment("PID").setField(6, "19580302"); 83 | 84 | console.log(msg.log()); 85 | 86 | 87 | console.log('-----Lets use Get Segments to look for Abnormal Values----') 88 | 89 | //the value of fields.value is always and array, because fields can repeat. 90 | //a more elegant API for this will probably be added 91 | msg.getSegments("OBX").forEach(function(segment) { 92 | var testName = segment.fields[1].value[0][1]; 93 | var result = segment.fields[3].value[0][0]; 94 | var lowRange = segment.fields[5].value[0][1]; 95 | 96 | if (result < lowRange) { 97 | console.log(testName + " was low. Result: " + result + ", Low Range: " + lowRange); 98 | } 99 | }); 100 | 101 | 102 | 103 | -------------------------------------------------------------------------------- /examples/tcp.js: -------------------------------------------------------------------------------- 1 | var hl7 = require('../lib'); 2 | 3 | ////////////////////SERVER/////////////////// 4 | var app = hl7.tcp(); 5 | app.use(function(req, res, next) { 6 | console.log('Message Recieved From ' + req.facility); 7 | console.log('Message Event: ' + req.event); 8 | console.log('Message Type: ' + req.type); 9 | next(); 10 | }); 11 | 12 | //create middleware 13 | app.use(function(req, res, next) { 14 | //create middleware for certain message types 15 | if (req.type != 'ADT' || req.event != 'A04') { 16 | return next(); 17 | } 18 | 19 | var pid = req.msg.getSegment('PID'); 20 | var patient = pid.getComponent(5, 2) + ' ' + pid.getComponent(5, 1); 21 | 22 | console.log('Patient Info Is ' + patient); 23 | next(); 24 | }); 25 | 26 | //Send Ack 27 | app.use(function(req, res, next) { 28 | console.log('************sending ack****************') 29 | res.end(); 30 | }) 31 | 32 | //Error Handler 33 | app.use(function(err, req, res, next) { 34 | var msa = res.ack.getSegment('MSA'); 35 | msa.setField(1, 'AR'); 36 | res.ack.addSegment('ERR', err.message); 37 | res.end(); 38 | }); 39 | 40 | 41 | app.start(7777); 42 | console.log('tcp interface listening on ' + 7777); 43 | ////////////////////SERVER/////////////////// 44 | 45 | 46 | ////////////////////CLIENT/////////////////// 47 | var parser = new hl7.Parser({segmentSeperator: '\n'}); 48 | var client = hl7.Server.createTcpClient({ 49 | host: 'localhost', 50 | port: 7777, 51 | keepalive: true, 52 | callback: function(err, ack) { 53 | if (err) { 54 | console.log("*******ERROR********"); 55 | console.log(err.message); 56 | } else { 57 | console.log(ack.log()); 58 | } 59 | } 60 | }); 61 | 62 | var msg = parser.parseFileSync('test/samples/adt.hl7'); 63 | 64 | console.log('************sending 1 message****************'); 65 | client.send(msg); 66 | 67 | setTimeout(function() { 68 | console.log('2'); 69 | console.log('************sending 2 message****************'); 70 | client.send(msg); 71 | }, 1000); 72 | 73 | setTimeout(function() { 74 | console.log('************sending 3 message****************'); 75 | client.send(msg); 76 | }, 2000); 77 | 78 | 79 | setTimeout(function() { 80 | process.exit(); 81 | }, 5000) 82 | 83 | ////////////////////CLIENT/////////////////// 84 | 85 | -------------------------------------------------------------------------------- /lib/client/file-client.js: -------------------------------------------------------------------------------- 1 | var fs = require('fs'); 2 | var path = require('path') 3 | 4 | 5 | function FileClient(dest) { 6 | this.dest = dest; 7 | } 8 | 9 | 10 | FileClient.prototype.send = function(msg, callback) { 11 | var messageId = msg.header.getField(8); 12 | fs.writeFile(path.join(this.dest, messageId + '.hl7'), msg.toString(), callback); 13 | } 14 | 15 | module.exports = FileClient 16 | -------------------------------------------------------------------------------- /lib/client/tcp-client.js: -------------------------------------------------------------------------------- 1 | var Parser = require('../hl7/parser.js'); 2 | var net = require('net') 3 | 4 | var VT = String.fromCharCode(0x0b); 5 | var FS = String.fromCharCode(0x1c); 6 | var CR = String.fromCharCode(0x0d); 7 | 8 | function TcpClient() { 9 | this.options = {} 10 | if (arguments.length == 2) { 11 | this.options.host = arguments[0]; 12 | this.options.port = arguments[1]; 13 | } 14 | if (arguments.length == 1) { 15 | this.options = arguments[0]; 16 | } 17 | this.host = this.options.host; 18 | this.port = this.options.port; 19 | this.callback = this.options.callback; 20 | this.keepalive = this.options.keepalive; 21 | this.responseBuffer = ""; 22 | this.awaitingResponse = false; 23 | this.parser = new Parser({ segmentSeperator: '\r' }); 24 | } 25 | 26 | TcpClient.prototype.connect = function(callback) { 27 | var self = this; 28 | self.client = net.connect({host: self.host, port: self.port}, function() { 29 | self.client.on('data', function(data) { 30 | self.responseBuffer += data.toString(); 31 | if (self.responseBuffer.substring(self.responseBuffer.length - 2, self.responseBuffer.length) == FS + CR) { 32 | var ack = self.parser.parse(self.responseBuffer.substring(1, self.responseBuffer.length - 2)); 33 | self.callback(null, ack); 34 | self.responseBuffer = ""; 35 | self.awaitingResponse = false; 36 | if (!self.keepalive) { 37 | self.close(); 38 | } 39 | } 40 | }); 41 | callback(); 42 | }); 43 | self.client.on('error', function(err) { 44 | callback(err); 45 | }) 46 | } 47 | 48 | TcpClient.prototype.send = function(msg, callback) { 49 | var self = this; 50 | self.callback = callback || self.callback; 51 | if (self.awaitingResponse) { 52 | self.callback(new Error("Can't send while awaiting response")); 53 | } 54 | self.awaitingResponse = true; 55 | try { 56 | if (self.client) { 57 | self.client.write(VT + msg.toString() + FS + CR); 58 | } else { 59 | self.connect(function(err) { 60 | if (err) return self.callback(err); 61 | self.awaitingResponse = true; 62 | self.client.write(VT + msg.toString() + FS + CR); 63 | }); 64 | } 65 | } catch (e) { 66 | self.callback(e); 67 | } 68 | } 69 | 70 | TcpClient.prototype.close = function() { 71 | var self = this; 72 | if (self.client) { 73 | self.responseBuffer = ""; 74 | self.awaitingResponse = false; 75 | self.client.end(); 76 | self.client.destroy(); 77 | delete self.client; 78 | } 79 | } 80 | 81 | module.exports = TcpClient 82 | -------------------------------------------------------------------------------- /lib/connect/file.js: -------------------------------------------------------------------------------- 1 | var EventEmitter = require('events').EventEmitter; 2 | var merge = require('utils-merge'); 3 | var proto = require('./proto'); 4 | var server = require('../index').Server; 5 | 6 | module.exports = createServer; 7 | 8 | var base = {}; 9 | 10 | function createServer(options) { 11 | function app(err, req, res, next) { 12 | app._handle(req, res, next); 13 | } 14 | merge(app, proto); 15 | merge(app, base); 16 | merge(app, EventEmitter.prototype); 17 | app.stack = []; 18 | app.options = options; 19 | return app; 20 | } 21 | 22 | 23 | base.start = function() { 24 | this.server = this.options ? 25 | server.createFileServer(this.options, this) : 26 | server.createFileServer(this); 27 | this.server.start.apply(this.server, arguments); 28 | return this.server; 29 | } 30 | 31 | base.stop = function() { 32 | this.server.stop(); 33 | } 34 | -------------------------------------------------------------------------------- /lib/connect/proto.js: -------------------------------------------------------------------------------- 1 | 2 | 3 | var proto = {} 4 | module.exports = proto; 5 | 6 | /* istanbul ignore next */ 7 | var defer = typeof setImmediate === 'function' 8 | ? setImmediate 9 | : function(fn){ process.nextTick(fn.bind.apply(fn, arguments)) } 10 | 11 | proto.use = function(fn) { 12 | var handle = fn; 13 | 14 | this.stack.push({handle: handle}); 15 | } 16 | 17 | proto._handle = function(req, res) { 18 | var index = 0; 19 | var stack = this.stack; 20 | 21 | function next(err) { 22 | 23 | var layer = stack[index++]; 24 | 25 | if (!layer) { 26 | return; 27 | } 28 | 29 | call(layer.handle, err, req, res, next); 30 | 31 | } 32 | 33 | next(); 34 | } 35 | 36 | function call(handle, err, req, res, next) { 37 | var arity = handle.length; 38 | var error = err; 39 | var hasError = Boolean(err); 40 | 41 | try { 42 | if (hasError && arity === 4) { 43 | handle(err, req, res, next); 44 | return; 45 | } else if (!hasError && arity < 4) { 46 | handle(req, res, next); 47 | return; 48 | } 49 | } catch (e) { 50 | error = e; 51 | } 52 | 53 | next(error); 54 | } -------------------------------------------------------------------------------- /lib/connect/tcp.js: -------------------------------------------------------------------------------- 1 | var EventEmitter = require('events').EventEmitter; 2 | var merge = require('utils-merge'); 3 | var proto = require('./proto'); 4 | var server = require('../index').Server; 5 | 6 | module.exports = createServer; 7 | 8 | var base = {}; 9 | 10 | function createServer(options) { 11 | function app(err, req, res, next) { 12 | app._handle(req, res, next); 13 | } 14 | merge(app, proto); 15 | merge(app, base); 16 | merge(app, EventEmitter.prototype); 17 | app.stack = []; 18 | app.server = null; 19 | app.options = options; 20 | return app; 21 | } 22 | 23 | 24 | base.start = function() { 25 | this.server = this.options ? 26 | server.createTcpServer(this.options, this) : 27 | server.createTcpServer(this) 28 | this.server.start.apply(this.server, arguments); 29 | return this.server; 30 | } 31 | 32 | base.stop = function() { 33 | this.server.stop(); 34 | } 35 | 36 | 37 | 38 | 39 | -------------------------------------------------------------------------------- /lib/hl7/component.js: -------------------------------------------------------------------------------- 1 | 2 | function component() { 3 | 4 | this.value = []; 5 | 6 | if (arguments.length > 0) { 7 | for (var i = 0; i < arguments.length; i++) { 8 | this.value.push(arguments[i]); 9 | } 10 | } 11 | 12 | } 13 | 14 | component.prototype.toString = function(delimiters) { 15 | var returnString = ""; 16 | 17 | for (var i = 0; i < this.value.length; i++) { 18 | 19 | if (Array.isArray(this.value[i])) { 20 | 21 | for (var ii = 0; ii < this.value[i].length; ii++) { 22 | returnString += this.value[i][ii]; 23 | if (ii != this.value[i].length - 1) returnString += delimiters.subcomponentSeperator 24 | } 25 | 26 | } else { 27 | 28 | returnString += this.value[i]; 29 | 30 | } 31 | 32 | if (i != this.value.length - 1) returnString += delimiters.repititionCharacter 33 | } 34 | 35 | return returnString; 36 | } 37 | 38 | 39 | module.exports = component; 40 | -------------------------------------------------------------------------------- /lib/hl7/delimiters.js: -------------------------------------------------------------------------------- 1 | 2 | 3 | module.exports = { 4 | fieldSeperator: "|", 5 | componentSeperator: "^", 6 | subcomponentSeperator: "&", 7 | escapeCharacter: "\\", 8 | repititionCharacter: "~", 9 | segmentSeperator: '\r' 10 | } -------------------------------------------------------------------------------- /lib/hl7/field.js: -------------------------------------------------------------------------------- 1 | var component = require('./component'); 2 | 3 | function field() { 4 | 5 | this.value = []; 6 | 7 | if (arguments.length > 0) { 8 | for (var i = 0; i < arguments.length; i++) { 9 | 10 | if (Array.isArray(arguments[i])) { 11 | var components = new Array(); 12 | for (var ii = 0; ii < arguments[i].length; ii++) { 13 | components.push(new component(arguments[i][ii])); 14 | } 15 | 16 | this.value.push(components); 17 | 18 | } else { 19 | this.value.push(new component(arguments[i])); 20 | } 21 | } 22 | } 23 | } 24 | 25 | field.prototype.toString = function(delimiters) { 26 | var returnString = ""; 27 | 28 | for (var i = 0; i < this.value.length; i++) { 29 | 30 | if (Array.isArray(this.value[i])) { 31 | 32 | for (var ii = 0; ii < this.value[i].length; ii++) { 33 | returnString += this.value[i][ii].toString(delimiters); 34 | if (ii != this.value[i].length - 1) returnString += delimiters.componentSeperator; 35 | } 36 | 37 | } else { 38 | 39 | returnString += this.value[i].toString(delimiters); 40 | 41 | } 42 | 43 | if (i != this.value.length - 1) returnString += delimiters.repititionCharacter 44 | } 45 | 46 | return returnString; 47 | } 48 | 49 | 50 | module.exports = field; 51 | -------------------------------------------------------------------------------- /lib/hl7/header.js: -------------------------------------------------------------------------------- 1 | var field = require('./field'); 2 | var delimiters = require('./delimiters'); 3 | var segment = require('./segment'); 4 | 5 | function header() { 6 | 7 | this.name = "MSH"; 8 | this.delimiters = { 9 | fieldSeperator: "|", 10 | componentSeperator: "^", 11 | subcomponentSeperator: "&", 12 | escapeCharacter: "\\", 13 | repititionCharacter: "~", 14 | segmentSeperator: '\r' 15 | }; 16 | 17 | this.fields = []; 18 | 19 | if (arguments.length > 1) { 20 | 21 | for (var i = 0; i < arguments.length; i++) { 22 | 23 | if (Array.isArray(arguments[i])) { 24 | var fields = new Array(); 25 | for (var ii = 0; ii < arguments[i].length; ii++) { 26 | fields.push(new field(arguments[i][ii])); 27 | } 28 | this.fields.push(fields); 29 | } else { 30 | for (var i = 0; i < arguments.length; i++) { 31 | this.fields.push(new field(arguments[i])); 32 | } 33 | } 34 | } 35 | } 36 | } 37 | 38 | header.prototype.addField = segment.prototype.addField; 39 | 40 | header.prototype.setField = segment.prototype.setField; 41 | 42 | header.prototype.removeField = segment.prototype.removeField; 43 | 44 | header.prototype.getField = segment.prototype.getField; 45 | 46 | header.prototype.getComponent = segment.prototype.getComponent; 47 | 48 | header.prototype.toString = function() { 49 | var returnString = 50 | this.name + 51 | this.delimiters.fieldSeperator + 52 | this.delimiters.componentSeperator + 53 | this.delimiters.repititionCharacter + 54 | this.delimiters.escapeCharacter + 55 | this.delimiters.subcomponentSeperator + 56 | this.delimiters.fieldSeperator 57 | 58 | for (var i = 0; i < this.fields.length; i++) { 59 | returnString += this.fields[i].toString(this.delimiters); 60 | 61 | if (i != this.fields.length - 1) returnString += this.delimiters.fieldSeperator 62 | 63 | } 64 | return returnString; 65 | } 66 | 67 | module.exports = header; 68 | -------------------------------------------------------------------------------- /lib/hl7/message.js: -------------------------------------------------------------------------------- 1 | var header = require('./header'); 2 | var segment = require('./segment'); 3 | 4 | function message() { 5 | 6 | this.header = new header(); 7 | this.segments = []; 8 | 9 | if (arguments.length > 0) { 10 | 11 | for (var i = 0; i < arguments.length; i++) { 12 | this.header.addField(arguments[i]); 13 | } 14 | 15 | } 16 | 17 | } 18 | 19 | message.prototype.getSegment = function(name) { 20 | for (var i = 0; i < this.segments.length; i++) { 21 | if (this.segments[i].name == name) return this.segments[i] 22 | } 23 | } 24 | 25 | message.prototype.getSegments = function(name) { 26 | var returnSegments = []; 27 | for (var i = 0; i < this.segments.length; i++) { 28 | if (this.segments[i].name == name) returnSegments.push(this.segments[i]); 29 | } 30 | return returnSegments; 31 | } 32 | 33 | message.prototype.addSegment = function() { 34 | 35 | if (arguments.length == 1) { 36 | var s = new segment(arguments[0]); 37 | this.segments.push(s); 38 | return s; 39 | } 40 | 41 | if (arguments.length > 1) { 42 | var s = new segment(arguments[0]); 43 | for (var i = 1; i < arguments.length; i++) { 44 | s.addField(arguments[i]); 45 | } 46 | this.segments.push(s); 47 | return s; 48 | } 49 | 50 | 51 | 52 | } 53 | 54 | message.prototype.log = function() { 55 | var currentSeperator = this.header.delimiters.segmentSeperator 56 | this.header.delimiters.segmentSeperator = '\n'; 57 | var returnString = this.toString(); 58 | this.header.delimiters.segmentSeperator = currentSeperator; 59 | return returnString 60 | 61 | } 62 | 63 | 64 | message.prototype.toString = function() { 65 | var returnString = this.header.toString() + this.header.delimiters.segmentSeperator; 66 | 67 | for (var i = 0; i < this.segments.length; i++) { 68 | 69 | returnString += this.segments[i].toString(this.header.delimiters); 70 | if (i != this.segments.length - 1) returnString += this.header.delimiters.segmentSeperator; 71 | } 72 | 73 | return returnString.replace(/^\s+|\s+$/g, ''); 74 | } 75 | 76 | 77 | module.exports = message; 78 | -------------------------------------------------------------------------------- /lib/hl7/parser.js: -------------------------------------------------------------------------------- 1 | var component = require('./component'); 2 | var field = require('./field'); 3 | var fs = require('fs'); 4 | var header = require('./header'); 5 | var message = require('./message'); 6 | var segment = require('./segment'); 7 | 8 | function parser(opts) { 9 | 10 | this.message = null; 11 | this.delimiters = { 12 | fieldSeperator: "|", 13 | componentSeperator: "^", 14 | subcomponentSeperator: "&", 15 | escapeCharacter: "\\", 16 | repititionCharacter: "~", 17 | segmentSeperator: opts ? opts.segmentSeperator : '\r' 18 | } 19 | 20 | } 21 | 22 | parser.prototype.parse = function(s) { 23 | this.message = new message(); 24 | var segments = s.split(this.delimiters.segmentSeperator); 25 | 26 | for (var i = 0; i < segments.length; i++) { 27 | if (i == 0) { 28 | this.message.header = this.parseHeader(segments[i]); 29 | } else { 30 | if (segments[i].trim() != "") { 31 | this.message.segments.push(this.parseSegment(segments[i])); 32 | } 33 | } 34 | 35 | } 36 | 37 | return this.message; 38 | 39 | } 40 | 41 | parser.prototype.parseFile = function(path, callback) { 42 | var _p = this; 43 | fs.readFile(path, function(err, data) { 44 | return callback(_p.parse(data.toString())); 45 | }); 46 | } 47 | 48 | parser.prototype.parseFileSync = function(path) { 49 | var _p = this; 50 | var data = fs.readFileSync(path); 51 | return _p.parse(data.toString()) 52 | } 53 | 54 | 55 | parser.prototype.parseHeader = function(s) { 56 | var h = new header(); 57 | var fields = s.split(this.delimiters.fieldSeperator); 58 | 59 | for (var i = 2; i < fields.length; i++ ) { 60 | h.fields.push(this.parseField(fields[i])); 61 | } 62 | 63 | return h; 64 | } 65 | 66 | parser.prototype.parseSegment = function(s) { 67 | var seg = new segment(); 68 | var fields = s.split(this.delimiters.fieldSeperator); 69 | 70 | seg.name = fields[0]; 71 | 72 | for (var i = 1; i < fields.length; i++ ) { 73 | seg.fields.push(this.parseField(fields[i])); 74 | } 75 | 76 | return seg 77 | } 78 | 79 | parser.prototype.parseField = function(s) { 80 | var f = new field(); 81 | 82 | if (s.indexOf(this.delimiters.repititionCharacter) != -1) { 83 | var _fs = s.split(this.delimiters.repititionCharacter); 84 | for (var i = 0; i < _fs.length; i++) { 85 | f.value.push(this.parseField(_fs[i])); 86 | } 87 | } else { 88 | var components = s.split(this.delimiters.componentSeperator); 89 | var cs = [] 90 | for (var i = 0; i < components.length; i++) { 91 | cs.push(this.parseComponent(components[i])); 92 | } 93 | f.value.push(cs); 94 | } 95 | 96 | return f; 97 | } 98 | 99 | parser.prototype.parseComponent = function(s) { 100 | var c = new component(); 101 | if (s.indexOf(this.delimiters.repititionCharacter) != -1) { 102 | var cs = s.split(this.delimiters.repititionCharacter); 103 | for (var i = 0; i < cs.length; i++ ) { 104 | c.value.push(parseComponent(cs[i])); 105 | } 106 | } else { 107 | if (s.indexOf(this.delimiters.subcomponentSeperator) != -1) { 108 | var subcomponents = s.split(this.delimiters.subcomponentSeperator); 109 | var subs = []; 110 | for (var i = 0; i < subcomponents.length; i++) { 111 | subs.push(subcomponents[i]); 112 | } 113 | c.value.push(subs); 114 | } else { 115 | c.value.push(s) 116 | } 117 | } 118 | return c 119 | } 120 | 121 | 122 | module.exports = parser; 123 | -------------------------------------------------------------------------------- /lib/hl7/segment.js: -------------------------------------------------------------------------------- 1 | var field = require('./field'); 2 | var component = require('./component'); 3 | var delimiters = require('./delimiters'); 4 | 5 | var segment = function() { 6 | 7 | this.name = ""; 8 | this.fields = []; 9 | 10 | if (arguments.length >= 1) { 11 | this.name = arguments[0] 12 | } 13 | 14 | if (arguments.length >= 2) { 15 | 16 | if (Array.isArray(arguments[i])) { 17 | var fields = new Array(); 18 | for (var ii = 0; ii < arguments[i].length; ii++) { 19 | fields.push(new field(arguments[i][ii])); 20 | } 21 | this.fields.push(fields); 22 | } else { 23 | for (var i = 1; i < arguments.length; i++) { 24 | this.fields.push(new field(arguments[i])); 25 | } 26 | } 27 | 28 | } 29 | 30 | } 31 | 32 | segment.prototype.addField = function(fieldValue, position) { 33 | //position is optional 34 | if(position) 35 | { 36 | if (this.fields.length > (position - 1)){ 37 | this.setField(position, fieldValue); 38 | } 39 | else{ 40 | currentLength = this.fields.length; 41 | while (currentLength <= (position-2)) { 42 | this.addField(""); 43 | currentLength = this.fields.length; 44 | } 45 | this.addField(fieldValue) 46 | } 47 | } 48 | else 49 | { 50 | if ((typeof fieldValue) == 'object') { 51 | if (Array.isArray(fieldValue)) { 52 | this.fields.push(new field(fieldValue)); 53 | } else { 54 | this.fields.push(fieldValue); 55 | } 56 | } else { 57 | this.fields.push(new field(fieldValue)); 58 | } 59 | 60 | } 61 | } 62 | 63 | segment.prototype.setField = function(index, fieldValue) { 64 | if (this.fields.length >= index) { 65 | this.fields[index - 1] = new field(fieldValue); 66 | } 67 | } 68 | 69 | segment.prototype.removeField = function(index) { 70 | if (this.fields.length >= index) { 71 | this.fields.splice(index - 1, 1); 72 | } 73 | } 74 | 75 | segment.prototype.getField = function(index, repeatIndex) { 76 | if (this.fields.length >= index) { 77 | var field = this.fields[index - 1] 78 | if (repeatIndex) { 79 | if (field.value.length >= repeatIndex) { 80 | return field.value[repeatIndex - 1].toString(delimiters); 81 | } 82 | return "" 83 | } 84 | return field.toString(delimiters); 85 | } 86 | return ""; 87 | } 88 | 89 | segment.prototype.getComponent = function(fieldIndex, componentIndex, subComponentIndex) { 90 | if (this.fields.length >= fieldIndex) { 91 | var components = this.fields[fieldIndex - 1].value[0]; 92 | if (components.length >= componentIndex) { 93 | var component = components[componentIndex - 1] 94 | if (subComponentIndex) { 95 | if (component.value[0].length >= subComponentIndex) { 96 | return component.value[0][subComponentIndex - 1].toString(delimiters) 97 | } 98 | return ""; 99 | } 100 | return component.toString(delimiters); 101 | } 102 | return ""; 103 | } 104 | return ""; 105 | } 106 | 107 | segment.prototype.setComponent = function(fieldIndex, componentIndex, value) { 108 | if (this.fields.length >= fieldIndex) { 109 | var components = this.fields[fieldIndex - 1].value[0]; 110 | if (components.length >= componentIndex) { 111 | components[componentIndex - 1] = new component(value); 112 | } 113 | } 114 | } 115 | 116 | segment.prototype.toString = function(delimiters) { 117 | var returnString = this.name + delimiters.fieldSeperator; 118 | 119 | for (var i = 0; i < this.fields.length; i++) { 120 | 121 | returnString += this.fields[i].toString(delimiters); 122 | 123 | if (i != this.fields.length -1) returnString += delimiters.fieldSeperator 124 | 125 | } 126 | 127 | return returnString; 128 | } 129 | 130 | module.exports = segment; 131 | -------------------------------------------------------------------------------- /lib/index.js: -------------------------------------------------------------------------------- 1 | module.exports.Component = require('./hl7/component') 2 | module.exports.Field = require('./hl7/field'); 3 | module.exports.Header = require('./hl7/header'); 4 | module.exports.Message = require('./hl7/message'); 5 | module.exports.Parser = require('./hl7/parser.js'); 6 | module.exports.Segment = require('./hl7/segment'); 7 | 8 | var FileClient = require('./client/file-client.js'); 9 | var FileServer = require('./server/file-server.js'); 10 | var TcpServer = require('./server/tcp-server.js'); 11 | var TcpClient = require('./client/tcp-client.js'); 12 | 13 | 14 | module.exports.Server = { 15 | createTcpServer: function(options, handler) { return new TcpServer(options, handler); }, 16 | createTcpClient: function() { 17 | if (arguments.length == 2) { 18 | return new TcpClient(arguments[0], arguments[1]); 19 | } else { 20 | return new TcpClient(arguments[0]); 21 | } 22 | }, 23 | createFileServer: function(options, handler) { return new FileServer(options, handler); }, 24 | createFileClient: function(dest) { return new FileClient(dest); }, 25 | } 26 | 27 | module.exports.tcp = require('./connect/tcp'); 28 | module.exports.file = require('./connect/file'); -------------------------------------------------------------------------------- /lib/server/file-server.js: -------------------------------------------------------------------------------- 1 | var EventEmitter = require('events').EventEmitter; 2 | var fs = require('fs'); 3 | var Parser = require('../hl7/parser.js'); 4 | var util = require('util'); 5 | var watch = require('watch'); 6 | 7 | 8 | function FileServer(options, handler) { 9 | EventEmitter.call(this); 10 | 11 | if (!handler) { 12 | handler = options; 13 | options = {}; 14 | } 15 | 16 | this.monitor = null; 17 | this.handler = handler; 18 | this.parser = options.parser || new Parser(); 19 | } 20 | 21 | util.inherits(FileServer, EventEmitter); 22 | 23 | function Req(msg, f) { 24 | this.file = f; 25 | this.msg = msg; 26 | this.sender = msg.header.getField(1).length == 1 ? 27 | msg.header.getField(1).toString() : 28 | msg.header.getField(1); 29 | 30 | this.facility = msg.header.getField(2).length == 1 ? 31 | msg.header.getField(2).toString() : 32 | msg.header.getField(2); 33 | 34 | this.type = msg.header.getComponent(7, 1).toString(); 35 | this.event = msg.header.getComponent(7, 2).toString(); 36 | } 37 | 38 | function Res() { 39 | 40 | } 41 | 42 | FileServer.prototype.start = function(src) { 43 | var self = this; 44 | var createdFiles = []; 45 | 46 | setTimeout(function() { 47 | createdFiles = []; 48 | }, 3000); 49 | 50 | 51 | 52 | watch.createMonitor(src, function(monitor) { 53 | self.monitor = monitor; 54 | 55 | self.monitor.on("created", function(f, stat) { 56 | 57 | if (createdFiles.indexOf(f) == -1) { 58 | createdFiles.push(f); 59 | 60 | fs.readFile(f, function(err, data) { 61 | if (err) { 62 | self.handler(err); 63 | return; 64 | } 65 | 66 | try { 67 | var hl7 = self.parser.parse(data.toString()); 68 | var req = new Req(hl7, f); 69 | var res = new Res(); 70 | self.handler(null, req, res); 71 | } catch (e) { 72 | self.handler(e); 73 | } 74 | }); 75 | } 76 | 77 | }); 78 | 79 | }); 80 | } 81 | 82 | FileServer.prototype.stop = function() { 83 | this.monitor.stop() 84 | } 85 | 86 | 87 | module.exports = FileServer; 88 | -------------------------------------------------------------------------------- /lib/server/tcp-server.js: -------------------------------------------------------------------------------- 1 | var EventEmitter = require('events').EventEmitter; 2 | var Message = require('../hl7/message'); 3 | var moment = require('moment'); 4 | var net = require('net'); 5 | var Parser = require('../hl7/parser'); 6 | var util = require('util'); 7 | 8 | var VT = String.fromCharCode(0x0b); 9 | var FS = String.fromCharCode(0x1c); 10 | var CR = String.fromCharCode(0x0d); 11 | 12 | function TcpServer(options, handler) { 13 | EventEmitter.call(this); 14 | 15 | if (!handler) { 16 | handler = options; 17 | options = {}; 18 | } 19 | 20 | this.handler = handler; 21 | this.server = null; 22 | this.socket = null; 23 | this.parser = options.parser || new Parser(); 24 | } 25 | 26 | util.inherits(TcpServer, EventEmitter); 27 | 28 | function Req(msg, raw) { 29 | this.msg = msg; 30 | this.raw = raw; 31 | this.sender = msg.header.getField(1).length == 1 ? 32 | msg.header.getField(1).toString() : 33 | msg.header.getField(1); 34 | 35 | this.facility = msg.header.getField(2).length == 1 ? 36 | msg.header.getField(2).toString() : 37 | msg.header.getField(2); 38 | 39 | this.type = msg.header.getComponent(7, 1).toString(); 40 | this.event = msg.header.getComponent(7, 2).toString(); 41 | } 42 | 43 | function Res(socket, ack) { 44 | this.ack = ack; 45 | this.socket = socket; 46 | 47 | this.end = function() { 48 | socket.write(VT + (this.ack).toString() + FS + CR); 49 | } 50 | } 51 | 52 | TcpServer.prototype.start = function(port, encoding, options) { 53 | var self = this; 54 | options = options || {} 55 | this.server = net.createServer(function(socket) { 56 | var message = ""; 57 | 58 | socket.on('data', function(data) { 59 | try { 60 | message += data.toString(); 61 | if (message.substring(message.length - 2, message.length) == FS + CR) { 62 | var hl7 = self.parser.parse(message.substring(1, message.length - 2)); 63 | var ack = self.createAckMessage(hl7); 64 | 65 | var req = new Req(hl7, message); 66 | var res = new Res(socket, ack); 67 | self.handler(null, req, res); 68 | message = ""; 69 | } 70 | } catch (err) { 71 | self.handler(err) 72 | } 73 | }).setEncoding(encoding ? encoding : "utf-8"); 74 | 75 | socket.on('error', function(err) { 76 | message = ""; 77 | self.handler(err); 78 | }) 79 | }); 80 | this.server.listen(port); 81 | } 82 | 83 | TcpServer.prototype.stop = function() { 84 | this.server.close(); 85 | } 86 | 87 | TcpServer.prototype.createAckMessage = function(msg) { 88 | var ack = new Message( 89 | msg.header.getField(3), 90 | msg.header.getField(4), 91 | msg.header.getField(1), 92 | msg.header.getField(2), 93 | moment().format('YYYYMMDDHHmmss'), 94 | '', 95 | ["ACK"], 96 | 'ACK' + moment().format('YYYYMMDDHHmmss'), 97 | 'P', 98 | '2.3') 99 | 100 | ack.addSegment("MSA", "AA", msg.header.getField(8)) 101 | return ack; 102 | } 103 | 104 | 105 | module.exports = TcpServer; 106 | -------------------------------------------------------------------------------- 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"resolved": "https://registry.npmjs.org/yargs-unparser/-/yargs-unparser-2.0.0.tgz", 1516 | "integrity": "sha512-7pRTIA9Qc1caZ0bZ6RYRGbHJthJWuakf+WmHK0rVeLkNrrGhfoabBNdue6kdINI6r4if7ocq9aD/n7xwKOdzOA==", 1517 | "dev": true, 1518 | "requires": { 1519 | "camelcase": "^6.0.0", 1520 | "decamelize": "^4.0.0", 1521 | "flat": "^5.0.2", 1522 | "is-plain-obj": "^2.1.0" 1523 | } 1524 | }, 1525 | "yocto-queue": { 1526 | "version": "0.1.0", 1527 | "resolved": "https://registry.npmjs.org/yocto-queue/-/yocto-queue-0.1.0.tgz", 1528 | "integrity": "sha512-rVksvsnNCdJ/ohGc6xgPwyN8eheCxsiLM8mxuE/t/mOVqJewPuO1miLpTHQiRgTKCLexL4MeAFVagts7HmNZ2Q==", 1529 | "dev": true 1530 | } 1531 | } 1532 | } 1533 | -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "simple-hl7", 3 | "version": "3.3.0", 4 | "description": "simple library for creating and parsing hl7 messages", 5 | "main": "lib/index.js", 6 | "directories": { 7 | "test": "test" 8 | }, 9 | "devDependencies": { 10 | "mocha": "10.4.0" 11 | }, 12 | "scripts": { 13 | "test": "mocha" 14 | }, 15 | "repository": { 16 | "type": "git", 17 | "url": "git+https://github.com/hitgeek/simple-hl7.git" 18 | }, 19 | "keywords": [ 20 | "hl7" 21 | ], 22 | "author": "Bob Rupp ", 23 | "license": "MIT", 24 | "bugs": { 25 | "url": "https://github.com/hitgeek/simple-hl7/issues" 26 | }, 27 | "homepage": "https://github.com/hitgeek/simple-hl7#readme", 28 | "dependencies": { 29 | "moment": "2.30.1", 30 | "utils-merge": "1.0.0", 31 | "watch": "0.13.0" 32 | } 33 | } 34 | -------------------------------------------------------------------------------- /test/samples/adt.hl7: -------------------------------------------------------------------------------- 1 | MSH|^~\&|EPIC|EPICADT|SMS|SMSADT|199912271408|CHARRIS|ADT^A04|1817457|D|2.5| 2 | PID||0493575^^^2^ID 1|454721||DOE^JOHN^^^^|DOE^JOHN^^^^|19480203|M||B|254 MYSTREET AVE^^MYTOWN^OH^44123^USA||(216)123-4567|||M|NON|400003403~1129086| 3 | NK1||ROE^MARIE^^^^|SPO||(216)123-4567||EC||||||||||||||||||||||||||| 4 | PV1||O|168 ~219~C~PMA^^^^^^^^^||||277^ALLEN MYLASTNAME^BONNIE^^^^|||||||||| ||2688684|||||||||||||||||||||||||199912271408||||||002376853 -------------------------------------------------------------------------------- /test/samples/adt.txt: -------------------------------------------------------------------------------- 1 | MSH|^~\&|EPIC|EPICADT|SMS|SMSADT|199912271408|CHARRIS|ADT^A04|1817457|D|2.5| 2 | PID||0493575^^^2^ID 1|454721||DOE^JOHN^^^^|DOE^JOHN^^^^|19480203|M||B|254 MYSTREET AVE^^MYTOWN^OH^44123^USA||(216)123-4567|||M|NON|400003403~1129086| 3 | NK1||ROE^MARIE^^^^|SPO||(216)123-4567||EC||||||||||||||||||||||||||| 4 | PV1||O|168 ~219~C~PMA^^^^^^^^^||||277^ALLEN MYLASTNAME^BONNIE^^^^|||||||||| ||2688684|||||||||||||||||||||||||199912271408||||||002376853 -------------------------------------------------------------------------------- /test/samples/orm.hl7: -------------------------------------------------------------------------------- 1 | MSH|^~\&|HIS|MedCenter|LIS|MedCenter|20060307110114||ORM^O01|MSGID20060307110114|P|2.3 2 | PID|||12001||Jones^John^^^Mr.||19670824|M|||123 West St.^^Denver^CO^80020^USA||||||| 3 | PV1||O|OP^PAREG^||||2342^Jones^Bob|||OP|||||||||2|||||||||||||||||||||||||20060307110111| 4 | ORC|NW|20060307110114 5 | OBR|1|20060307110114||003038^Urinalysis^L|||20060307110114 -------------------------------------------------------------------------------- /test/samples/oru-imm.hl7: -------------------------------------------------------------------------------- 1 | MSH|^~\&||GA0000||VAERS PROCESSOR|20010331605||ORU^R01|20010422GA03|T|2.3.1|||AL| 2 | PID|||1234^^^^SR~1234-12^^^^LR~00725^^^^MR||Doe^John^Fitzgerald^JR^^^L||20001007|M||2106-3^White^HL70005|123 Peachtree St^APT 3B^Atlanta^GA^30210^^M^^GA067||(678) 555-1212^^PRN| 3 | NK1|1|Jones^Jane^Lee^^RN|VAB^Vaccine administered by (Name)^HL70063| 4 | NK1|2|Jones^Jane^Lee^^RN|FVP^Form completed by (Name)-Vaccine provider^HL70063|101 Main Street^^Atlanta^GA^38765^^O^^GA121||(404) 554-9097^^WPN| 5 | ORC|CN|||||||||||1234567^Welby^Marcus^J^Jr^Dr.^MD^L|||||||||Peachtree Clinic|101 Main Street^^Atlanta^GA^38765^^O^^GA121|(404) 554-9097^^WPN|101 Main Street^^Atlanta^GA^38765^^O^^GA121| 6 | OBR|1|||^CDC VAERS-1 (FDA) Report|||20010316| 7 | OBX|1|NM|21612-7^Reported Patient Age^LN||05|mo^month^ANSI| 8 | OBX|1|TS|30947-6^Date form completed^LN||20010316| 9 | OBX|2|FT|30948-4^Vaccination adverse events and treatment, if any^LN|1|fever of 106F, with vomiting, seizures, persistent crying lasting over 3 hours, loss of appetite| 10 | OBX|3|CE|30949-2^Vaccination adverse event outcome^LN|1|E^required emergency room/doctor visit^NIP005| 11 | OBX|4|CE|30949-2^Vaccination adverse event outcome^LN|1|H^required hospitalization^NIP005| 12 | OBX|5|NM|30950-0^Number of days hospitalized due to vaccination adverse event^LN|1|02|d^day^ANSI| 13 | OBX|6|CE|30951-8^Patient recovered^LN||Y^Yes^ HL70239| 14 | OBX|7|TS|30952-6^Date of vaccination^LN||20010216| 15 | OBX|8|TS|30953-4^Adverse event onset date and time^LN||200102180900| 16 | OBX|9|FT|30954-2^Relevant diagnostic tests/lab data^LN||Electrolytes, CBC, Blood culture| 17 | OBR|2|||30955-9^All vaccines given on date listed in #10^LN| 18 | OBX|1|CE30955-9&30956-7^Vaccine type^LN|1|08^HepB-Adolescent/pediatric^CVX| 19 | OBX|2|CE|30955-9&30957-5^Manufacturer^LN|1|MSD^Merck^MVX| 20 | OBX|3|ST|30955-9&30959-1^Lot number^LN|1|MRK12345| 21 | OBX|4|CE|30955-9&30958-3^ Route^LN|1|IM^Intramuscular ^HL70162| 22 | OBX|5|CE|30955-9&31034-2^Site^LN|1|LA^Left arm^ HL70163| 23 | OBX|6|NM|30955-9&30960-9^Number of previous doses^LN|1|01I 24 | OBX|7|CE|CE|30955-9&30956-7^Vaccine type^LN|2|50^DTaP-Hib^CVX| 25 | OBX|8|CE|30955-9&30957-5^ Manufacturer^LN|2|WAL^Wyeth_Ayerst^MVX| 26 | OBX|9|ST|30955-9&30959-1^Lot number^LN|2|W46932777| 27 | OBX|10|CE|30955-9&30958-3^ Route^LN|2|IM^Intramuscular^HL70162| 28 | OBX|11|CE|30955-9&31034-2^Site^LN|2|LA^Left arm^HL70163| 29 | OBX|12|NM|30955-9&30960-9^Number of previous doses^LN|2|01| 30 | OBR|3|||30961-7^Any other vaccinations within 4 weeks prior to the date listed in #10| 31 | OBX|1|CE|30961-7&30956-7^Vaccine type^LN|1|10^IPV^CVX| 32 | OBX|2|CE|30961-7&30957-5^Manufacturer^LN|1|PMC^Aventis Pasteur ^MVX| 33 | OBX|3|ST|30961-7&30959-1^Lot number^LN|1|PMC123456| 34 | OBX|4|CE|30961-7&30958-3^Route^LN|1|SC^Subcutaneaous^HL70162| 35 | OBX|5|CE|30961-7&31034-2^Site^LN|1|LA^Left arm^HL70163| 36 | OBX|6|NM|30961-7&30960-9^Number of previous doses^LN|1|01| 37 | OBX|7|TS|30961-7&31035-9^date given^LN|1|20001216| 38 | OBX|8|CE|30962-^Vaccinated at^LN||PVT^Private doctor?s office/hospital^NIP009| 39 | OBX|9|CE|30963-3^Vaccine purchased with^LN||PBF^Public funds^NIP008| 40 | OBX|10|FT|30964-1^Other medications^LN||None| 41 | OBX|11|FT|30965-8^Illness at time of vaccination (specify)^LN||None| 42 | OBX|12|FT|30966-6^Pre-existing physician diagnosed allergies, birth defects, medical conditions^LN||Past conditions convulsions| 43 | OBX|13|CE|30967-4^Was adverse event reported previously^LN||N^no^NIP009| 44 | OBR|4||30968-2^Adverse event following prior vaccination in patient^LN| 45 | OBX|1|TX|30968-2&30971-6^Adverse event^LN||None| 46 | OBR|5||30969-0^Adverse event following prior vaccination in brother^LN| 47 | OBX|1|TX||30969-0&30971-6^Adverse event^LN||vomiting, fever, otitis media| 48 | OBX|2|NM||30969-0&30972-4^Onset age^LN||04|mo^month^ANSI| 49 | OBX|3|CE||30969-0&30956-7^Vaccine Type ^LN||10^IPV^CVX| 50 | OBX|4|NM||30969-0&30973-2^Dose number in series^LN||02| 51 | OBR|6|||30970-8^Adverse event following prior vaccination in sister^LN| 52 | OBX|1|TX|30970-8&30971-6^Adverse event^LN||None| 53 | OBR|7||^For children 5 and under| 54 | OBX|1|NM|8339-4^Body weight at birth^LN||82|oz^ounces^ANSI| 55 | OBX|2|NM|30974-0^Number of brothers and sisters^LN||2| 56 | OBR|8|||^Only for reports submitted by manufacturer/immunization project| 57 | OBX|1|ST|30975-7^Mfr./Imm. Proj. report no.^LN||12345678| 58 | OBX|2|TS|30976-5^Date received by manufacturer/immunization project^LN||12345678| 59 | OBX|3|CE|30977-3^15 day report^LN||N^No^HL70136| 60 | OBX|4|CE|30978-1^Report type^LN||IN^Initial^NIP010| -------------------------------------------------------------------------------- /test/samples/oru.hl7: -------------------------------------------------------------------------------- 1 | MSH|^~\&|XXXX|C|PRIORITYHEALTH|PRIORITYHEALTH|20080511103530||ORU^R01|Q335939501T337311002|P|2.3||| PID|1||94000000000^^^Priority Health||LASTNAME^FIRSTNAME^INIT||19460101|M||||| PD1|1|||1234567890^PCPLAST^PCPFIRST^M^^^^^NPI| OBR|1||185L29839X64489JLPF~X64489^ACC_NUM|JLPF^Lipid Panel - C||||||||||||1694^DOCLAST^DOCFIRST^^MD||||||20080511103529||| OBX|1|NM|JHDL^HDL Cholesterol (CAD)|1|62|CD:289^mg/dL|>40^>40|""||""|F|||20080511103500|||^^^""| OBX|2|NM|JTRIG^Triglyceride (CAD)|1|72|CD:289^mg/dL|35-150^35^150|""||""|F|||20080511103500|||^^^""| OBX|3|NM|JVLDL^VLDL-C (calc - CAD)|1|14|CD:289^mg/dL||""||""|F|||20080511103500|||^^^""| OBX|4|NM|JLDL^LDL-C (calc - CAD)|1|134|CD:289^mg/dL|0-100^0^100|H||""|F|||20080511103500|||^^^""| OBX|5|NM|JCHO^Cholesterol (CAD)|1|210|CD:289^mg/dL|90-200^90^200|H||""|F|||20080511103500|||^^^""| -------------------------------------------------------------------------------- /test/setup.js: -------------------------------------------------------------------------------- 1 | var fs = require('fs'); 2 | 3 | -------------------------------------------------------------------------------- /test/test-connect.js: -------------------------------------------------------------------------------- 1 | var assert = require('assert'); 2 | var fs = require('fs'); 3 | var hl7 = require('../lib/index.js'); 4 | var net = require('net'); 5 | var path = require('path'); 6 | var server = hl7.Server; 7 | 8 | 9 | var VT = String.fromCharCode(0x0b); 10 | var FS = String.fromCharCode(0x1c); 11 | var CR = String.fromCharCode(0x0d); 12 | 13 | describe('file', function() { 14 | 15 | describe('.start()', function() { 16 | this.timeout(10000); 17 | it('should start the file server listening on a folder, and emit event on new file', function(done) { 18 | fs.mkdirSync('test/import'); 19 | var hl7TestMessage = fs.readFileSync('test/samples/adt.hl7').toString().replace(/\r?\n/g, "\r"); 20 | 21 | var app = hl7.file(); 22 | 23 | app.use(function(req, res, next) { 24 | assert.equal(req.msg.toString(), hl7TestMessage); 25 | assert.equal(req.sender, 'EPIC'); 26 | assert.equal(req.facility, 'EPICADT'); 27 | assert.equal(req.type, 'ADT'); 28 | assert.equal(req.event, 'A04'); 29 | next(); 30 | }); 31 | 32 | app.use(function(req, res, next) { 33 | return next(); 34 | req.shouldNotBeHere = true; 35 | next(); 36 | }); 37 | 38 | app.use(function(req, res, next) { 39 | req.shouldBeHere = true; 40 | next() 41 | }); 42 | 43 | app.use(function(req, res, next) { 44 | assert(req.shouldBeHere); 45 | assert(!req.shouldNotBeHere); 46 | next(); 47 | }); 48 | 49 | app.use(function(req, res) { 50 | fs.unlinkSync(req.file); 51 | done(); 52 | }); 53 | 54 | app.use(function(err, req, res) { 55 | assert(!err); 56 | console.log(err); 57 | }); 58 | 59 | var __server = app.start('test/import') 60 | 61 | setTimeout(function() { 62 | fs.writeFileSync('test/import/adt.hl7', hl7TestMessage); 63 | }, 1000); 64 | 65 | }); 66 | describe('.stop()', function() { 67 | it('should stop server', function(done) { 68 | var app = hl7.file(); 69 | app.start('test'); 70 | setTimeout(function() { 71 | app.stop(); 72 | done(); 73 | }, 1000) 74 | }); 75 | }); 76 | }); 77 | }); 78 | 79 | 80 | describe('tcp', function() { 81 | var tcpServer 82 | describe('.start()', function() { 83 | this.timeout(10000); 84 | it('should start a tcp server listenting on specified port, and respond to messages', function(done) { 85 | var parser = new hl7.Parser(); 86 | var adt = parser.parse(fs.readFileSync('test/samples/adt.hl7').toString()); 87 | 88 | var app = hl7.tcp(); 89 | 90 | app.use(function(req, res, next) { 91 | assert(req.msg); 92 | assert(res.ack); 93 | assert(res.end); 94 | assert.equal(res.socket.localPort, 8787); 95 | 96 | assert.equal(req.sender, 'EPIC'); 97 | assert.equal(req.facility, 'EPICADT'); 98 | assert.equal(req.type, 'ADT'); 99 | assert.equal(req.event, 'A04'); 100 | 101 | next(); 102 | }); 103 | 104 | app.use(function(req, res, next) { 105 | return next(); 106 | req.shouldNotBeHere = true; 107 | next(); 108 | }); 109 | 110 | app.use(function(req, res, next) { 111 | req.shouldBeHere = true; 112 | res.shouldBeHere = true; 113 | next() 114 | }); 115 | 116 | app.use(function(req, res) { 117 | assert(req.shouldBeHere); 118 | assert(res.shouldBeHere); 119 | assert(!req.shouldNotBeHere); 120 | res.end(); 121 | }); 122 | 123 | var __server = app.start(8787); 124 | 125 | setTimeout(function() { 126 | var tcpClient = server.createTcpClient('127.0.0.1', 8787); 127 | 128 | tcpClient.send(adt, function(ack) { 129 | __server.stop(); 130 | done(); 131 | }); 132 | }, 1000); 133 | 134 | }); 135 | describe('.stop()', function() { 136 | it('should stop server', function(done) { 137 | var app = hl7.tcp(); 138 | app.start(9999); 139 | setTimeout(function() { 140 | app.stop(); 141 | done(); 142 | }, 1000) 143 | }); 144 | }); 145 | }); 146 | }); 147 | -------------------------------------------------------------------------------- /test/test-hl7.js: -------------------------------------------------------------------------------- 1 | var assert = require("assert") 2 | var component = require('../lib/hl7/component'); 3 | var delimiters = require('../lib/hl7/delimiters') 4 | var field = require('../lib/hl7/field'); 5 | var fs = require('fs'); 6 | var header = require('../lib/hl7/header'); 7 | var message = require('../lib/hl7/message'); 8 | var Parser = require('../lib/hl7/parser'); 9 | var segment = require('../lib/hl7/segment'); 10 | 11 | var delimiters = { 12 | subcomponentSeperator: "&", 13 | repititionCharacter: "~", 14 | componentSeperator: "^", 15 | fieldSeperator: "|" 16 | } 17 | var parser = new Parser(); 18 | 19 | describe('Component', function() { 20 | describe('.toString()', function() { 21 | it('should return hl7 with proper structure for various formats', function() { 22 | 23 | var singleComponent = new component("Single Component"); 24 | var componentWithSubcomponents = new component(["First Component", "Second Component"]); 25 | var repeatingComponent = new component("First Repeat", "Second Repeat"); 26 | var repeatingComponentWithSubComponents = new component( 27 | ["First Component", "Second Component"], 28 | ["First Repeat", "Second Repeat"] 29 | ); 30 | 31 | assert.equal(singleComponent.toString(delimiters), "Single Component"); 32 | assert.equal(componentWithSubcomponents.toString(delimiters), "First Component&Second Component"); 33 | assert.equal(repeatingComponent.toString(delimiters), "First Repeat~Second Repeat"); 34 | assert.equal(repeatingComponentWithSubComponents.toString(delimiters), "First Component&Second Component~First Repeat&Second Repeat"); 35 | }); 36 | }); 37 | }); 38 | 39 | describe("Field", function() { 40 | describe(".toString()", function() { 41 | it('should return hl7 with proper structure for various formats', function() { 42 | var singleValueField = new field("Field Value"); 43 | var repeatingSingleValueField = new field("Field Value", "Repeat Field Value"); 44 | var fieldWithComponents = new field(["Component 1", "Component 2"]); 45 | var fieldWithComponentsWithSubcomponents = new field([ 46 | "Component 1", 47 | ["Component 2 Subcomponent 1", "Component 2 Subcomponent 2"], 48 | "Component 3" 49 | ]); 50 | 51 | assert.equal(singleValueField.toString(delimiters), "Field Value"); 52 | assert.equal(repeatingSingleValueField.toString(delimiters), "Field Value~Repeat Field Value"); 53 | assert.equal(fieldWithComponents.toString(delimiters), "Component 1^Component 2"); 54 | assert.equal(fieldWithComponentsWithSubcomponents.toString(delimiters), "Component 1^Component 2 Subcomponent 1&Component 2 Subcomponent 2^Component 3"); 55 | 56 | }) 57 | }); 58 | }); 59 | 60 | describe("Segment", function() { 61 | describe(".toString()", function() { 62 | it('should return hl7 with proper structure for various formats', function() { 63 | var segmentWithSingleValueFields = new segment("NME", "Field 1", "Field 2", "Field 3"); 64 | var segmentWithComponentValueFields = new segment("NME", ["Component 1", "Component 2"], "Field 3"); 65 | 66 | assert.equal(segmentWithSingleValueFields.toString(delimiters), "NME|Field 1|Field 2|Field 3"); 67 | assert.equal(segmentWithComponentValueFields.toString(delimiters), "NME|Component 1^Component 2|Field 3"); 68 | }); 69 | }); 70 | describe(".addField()", function() { 71 | it('should add a field, check using toString()', function() { 72 | var segmentWithNoFields = new segment("NME"); 73 | segmentWithNoFields.addField("Field Value"); 74 | 75 | assert.equal(segmentWithNoFields.toString(delimiters), "NME|Field Value"); 76 | 77 | segmentWithNoFields.addField(["Component 1", "Component 2"]); 78 | 79 | assert.equal(segmentWithNoFields.toString(delimiters), "NME|Field Value|Component 1^Component 2"); 80 | 81 | segmentWithNoFields.addField("Field Value"); 82 | 83 | assert.equal(segmentWithNoFields.toString(delimiters), "NME|Field Value|Component 1^Component 2|Field Value"); 84 | }); 85 | }); 86 | describe(".setField()", function() { 87 | it('should swap a field at certain index, check using toString()', function() { 88 | var simpleSegment = new segment("NME", "Field 1", "Field 2", "Field 3"); 89 | 90 | assert.equal(simpleSegment.toString(delimiters), "NME|Field 1|Field 2|Field 3"); 91 | 92 | simpleSegment.setField(2, ["Component 1", "Component 2"]); 93 | 94 | assert.equal(simpleSegment.toString(delimiters), "NME|Field 1|Component 1^Component 2|Field 3"); 95 | }); 96 | }); 97 | describe(".removeField()", function() { 98 | it('should remove a field, not sure why you would do this, check using toString()', function() { 99 | var simpleSegment = new segment("NME", "Field 1", "Field 2", "Field 3"); 100 | 101 | assert.equal(simpleSegment.toString(delimiters), "NME|Field 1|Field 2|Field 3"); 102 | 103 | simpleSegment.removeField(2); 104 | 105 | assert.equal(simpleSegment.toString(delimiters), "NME|Field 1|Field 3"); 106 | }); 107 | }); 108 | describe('.getField(x)', function() { 109 | it('should return a single field from the field value array', function() { 110 | var simpleSegment = new segment("NME", "Field 1", "Field 2", ["Component 1", "Component 2"]); 111 | 112 | assert.equal(simpleSegment.getField(2), "Field 2"); 113 | assert.equal(simpleSegment.getField(3), "Component 1^Component 2"); 114 | assert.equal(simpleSegment.getField(5), ""); 115 | }); 116 | }); 117 | describe('.getField(x, z)', function() { 118 | it('should return a repeating field value', function() { 119 | var simpleSegment = new segment("NME"); 120 | simpleSegment.fields.push(new field("One", "Two")); 121 | 122 | assert.equal(simpleSegment.getField(1, 1), "One"); 123 | assert.equal(simpleSegment.getField(1, 2), "Two"); 124 | }); 125 | }); 126 | describe('.getComponent(x)', function(){ 127 | it('should return the component at index', function() { 128 | var simpleSegment = new segment("NME", "Field 1", "Field 2", ["Component 1", "Component 2"]); 129 | assert.equal(simpleSegment.getComponent(3, 1), "Component 1"); 130 | assert.equal(simpleSegment.getComponent(3, 2), "Component 2"); 131 | assert.equal(simpleSegment.getComponent(3, 3), ""); 132 | }); 133 | }); 134 | describe('.getComponent(x, z)', function(){ 135 | it('should return the sub component at index', function() { 136 | var simpleSegment = new segment("NME", ["Component 1", ["Sub1", "Sub2"]]); 137 | 138 | assert.equal(simpleSegment.getComponent(1, 2, 1), "Sub1"); 139 | assert.equal(simpleSegment.getComponent(1, 2, 2), "Sub2"); 140 | assert.equal(simpleSegment.getComponent(1, 2, 3), ""); 141 | }); 142 | }); 143 | describe('.setComponent(x, v)', function(){ 144 | it('should return the component at index', function() { 145 | var simpleSegment = new segment("NME", "Field 1", "Field 2", ["Component 1", "Component 2", ["Sub1", "Sub2"]]); 146 | assert.equal(simpleSegment.getComponent(3, 1), "Component 1"); 147 | simpleSegment.setComponent(3, 1, "Component 1 Update"); 148 | assert.equal(simpleSegment.getComponent(3, 1), "Component 1 Update"); 149 | simpleSegment.setComponent(3, 3, [ "Sub1 Update", "Sub2 Update" ]); 150 | assert.equal(simpleSegment.getComponent(3, 3), "Sub1 Update&Sub2 Update"); 151 | }); 152 | }); 153 | }); 154 | 155 | describe("Header", function() { 156 | describe(".toString()", function() { 157 | it('same as segment, but with some special sauce', function() { 158 | var defaultHeader = new header(); 159 | 160 | assert.equal(defaultHeader.toString(delimiters), "MSH|^~\\&|"); 161 | 162 | var headerWithFields = new header("Field 1", "Field 2", ["Component 1", "Component 2"]); 163 | 164 | assert.equal(headerWithFields.toString(delimiters), "MSH|^~\\&|Field 1|Field 2|Component 1^Component 2"); 165 | }); 166 | }); 167 | describe(".addField()", function() { 168 | it('should add a field, check using toString()', function() { 169 | var segmentWithNoFields = new header(); 170 | segmentWithNoFields.addField("Field Value"); 171 | 172 | assert.equal(segmentWithNoFields.toString(delimiters), "MSH|^~\\&|Field Value"); 173 | 174 | segmentWithNoFields.addField(["Component 1", "Component 2"]); 175 | 176 | assert.equal(segmentWithNoFields.toString(delimiters), "MSH|^~\\&|Field Value|Component 1^Component 2"); 177 | 178 | segmentWithNoFields.addField("Field Value"); 179 | 180 | assert.equal(segmentWithNoFields.toString(delimiters), "MSH|^~\\&|Field Value|Component 1^Component 2|Field Value"); 181 | }); 182 | }); 183 | describe(".setField()", function() { 184 | it('should swap a field at certain index, check using toString()', function() { 185 | var simpleSegment = new header("Field 1", "Field 2", "Field 3"); 186 | 187 | assert.equal(simpleSegment.toString(delimiters), "MSH|^~\\&|Field 1|Field 2|Field 3"); 188 | 189 | simpleSegment.setField(2, ["Component 1", "Component 2"]); 190 | 191 | assert.equal(simpleSegment.toString(delimiters), "MSH|^~\\&|Field 1|Component 1^Component 2|Field 3"); 192 | }); 193 | }); 194 | describe(".removeField()", function() { 195 | it('should remove a field, not sure why you would do this, check using toString()', function() { 196 | var simpleSegment = new header("Field 1", "Field 2", "Field 3"); 197 | 198 | assert.equal(simpleSegment.toString(delimiters), "MSH|^~\\&|Field 1|Field 2|Field 3"); 199 | 200 | simpleSegment.removeField(2); 201 | 202 | assert.equal(simpleSegment.toString(delimiters), "MSH|^~\\&|Field 1|Field 3"); 203 | }); 204 | }); 205 | describe('.getField()', function() { 206 | it('should return a single field from the field value array', function() { 207 | var simpleSegment = new header("Field 1", "Field 2", ["Component 1", "Component 2"]); 208 | 209 | assert.equal(simpleSegment.getField(2), "Field 2"); 210 | assert.equal(simpleSegment.getComponent(3, 1), "Component 1"); 211 | 212 | }); 213 | }); 214 | }); 215 | 216 | describe("Message", function() { 217 | describe(".toString()", function() { 218 | it('should print out structured hl7 message', function() { 219 | var emptyMessageWithSomeHeader = new message("Header Field 1", "Header Field 2"); 220 | 221 | assert.equal(emptyMessageWithSomeHeader.toString(delimiters), "MSH|^~\\&|Header Field 1|Header Field 2"); 222 | }); 223 | }); 224 | describe(".addSegment()", function() { 225 | it('should add segment with different syntaxes, check with toString()', function() { 226 | var emptyMessageWithSomeHeader = new message("Header Field 1", "Header Field 2"); 227 | emptyMessageWithSomeHeader.addSegment("NME", "Field 1", "Field 2"); 228 | 229 | assert.equal(emptyMessageWithSomeHeader.toString(delimiters), "MSH|^~\\&|Header Field 1|Header Field 2\rNME|Field 1|Field 2"); 230 | 231 | emptyMessageWithSomeHeader.addSegment("NME", "Field 1", ["Component 1", "Component 2"]); 232 | 233 | assert.equal(emptyMessageWithSomeHeader.toString(delimiters), 234 | "MSH|^~\\&|Header Field 1|Header Field 2\rNME|Field 1|Field 2\rNME|Field 1|Component 1^Component 2"); 235 | }); 236 | }); 237 | describe(".getSegment()", function() { 238 | it('should get a segment for modification and you can change it with segment API, check with toString()', function() { 239 | var emptyMessageWithSomeHeader = new message("Header Field 1", "Header Field 2"); 240 | emptyMessageWithSomeHeader.addSegment("NME", "Field 1", "Field 2"); 241 | 242 | var segmentFromMessage = emptyMessageWithSomeHeader.getSegment("NME"); 243 | 244 | assert.equal(segmentFromMessage.toString(delimiters), "NME|Field 1|Field 2"); 245 | 246 | segmentFromMessage.setField(1, ["Component 1", "Component 2"]); 247 | 248 | assert.equal(segmentFromMessage.toString(delimiters), "NME|Component 1^Component 2|Field 2"); 249 | assert.equal(emptyMessageWithSomeHeader.toString(delimiters), "MSH|^~\\&|Header Field 1|Header Field 2\rNME|Component 1^Component 2|Field 2"); 250 | 251 | }); 252 | }); 253 | describe(".getSegments()", function() { 254 | it('should return an array of segments, and if no segments return empy array', function() { 255 | var messageWithRepeatingSegments = new message("Header Field 1", "Header Field 2"); 256 | messageWithRepeatingSegments.addSegment("NME", "Field 1", "Field 2"); 257 | messageWithRepeatingSegments.addSegment("NME", "Field 3", "Field 4"); 258 | 259 | var nmeSegments = messageWithRepeatingSegments.getSegments("NME"); 260 | assert.equal(nmeSegments.length, 2); 261 | assert.equal(nmeSegments[0].toString(messageWithRepeatingSegments.header.delimiters), "NME|Field 1|Field 2"); 262 | assert.equal(nmeSegments[1].toString(messageWithRepeatingSegments.header.delimiters), "NME|Field 3|Field 4"); 263 | 264 | }); 265 | }) 266 | }); 267 | 268 | describe("Parser", function() { 269 | describe(".parse()", function() { 270 | it('should parse message with different segment seperators', function() { 271 | var msg1 = "MSH|^~\\&|Header Field 1|Header Field 2\rNME|Component 1^Component 2|Field 2" 272 | var msg2 = "MSH|^~\\&|Header Field 1|Header Field 2\nNME|Component 1^Component 2|Field 2" 273 | 274 | var x = parser.parse(msg1); 275 | 276 | assert.equal(parser.parse(msg1).segments.length, 1); 277 | assert.equal(new Parser({segmentSeperator: '\n'}).parse(msg2).segments.length, 1); 278 | }); 279 | }); 280 | describe("Parse sample documents. Success = output same as input", function() { 281 | it('should parse all the sample documents', function() { 282 | var samples = fs.readdirSync('test/samples'); 283 | var samples = samples.filter(function(x) { return x.indexOf('.hl7') > -1 }); 284 | 285 | samples.forEach(function(x) { 286 | 287 | var sampleText = fs.readFileSync('test/samples/' + x).toString().replace(/\r?\n/g, "\r").trim(); 288 | var sampleParse = parser.parse(sampleText); 289 | 290 | assert.ok(sampleParse.segments.length > 0); 291 | assert.equal(sampleParse.toString(), sampleText); 292 | }); 293 | }); 294 | }); 295 | describe("Ignore Empty Lines", function() { 296 | it('should parse the correct number of segments', function() { 297 | var sample = fs.readFileSync('test/samples/adt.txt'); 298 | var adt = parser.parse(sample.toString().replace(/\r?\n/g, "\r")); 299 | assert.equal(adt.segments.length, 3); 300 | }) 301 | }) 302 | }); 303 | -------------------------------------------------------------------------------- /test/test-server.js: -------------------------------------------------------------------------------- 1 | var assert = require('assert'); 2 | var fs = require('fs'); 3 | var hl7 = require('../lib/index.js'); 4 | var net = require('net'); 5 | var path = require('path'); 6 | var server = hl7.Server; 7 | 8 | 9 | var VT = String.fromCharCode(0x0b); 10 | var FS = String.fromCharCode(0x1c); 11 | var CR = String.fromCharCode(0x0d); 12 | 13 | describe('FileServer', function() { 14 | var fileServer; 15 | describe('.start()', function() { 16 | this.timeout(10000); 17 | it('should start the file server listening on a folder, and emit event on new file', function(done) { 18 | 19 | var hl7TestMessage = fs.readFileSync('test/samples/adt.hl7').toString().replace(/\r?\n/g, "\r"); 20 | 21 | fileServer = server.createFileServer(function(err, req, res) { 22 | 23 | assert.equal(req.msg.toString(), hl7TestMessage); 24 | 25 | fs.unlinkSync(req.file); 26 | fs.rmdirSync('test/import'); 27 | done(); 28 | }); 29 | 30 | fileServer.start('test/import'); 31 | 32 | setTimeout(function() { 33 | fs.writeFileSync('test/import/adt.hl7', hl7TestMessage); 34 | }, 1000); 35 | 36 | }); 37 | }); 38 | 39 | describe('.stop()', function() { 40 | it('should stop the server listening', function() { 41 | fileServer.stop(); 42 | //if no errors assume it works? 43 | }); 44 | }); 45 | 46 | }); 47 | 48 | describe('FileClient', function() { 49 | describe('.send()', function() { 50 | this.timeout(10000); 51 | it('should take an hl7 message and write it to the destination folder', function(done) { 52 | var parser = new hl7.Parser(); 53 | var hl7MessageString = fs.readFileSync('./test/samples/oru-imm.hl7').toString(); 54 | var msg = parser.parse(hl7MessageString) 55 | var newMessageName = msg.header.getField(8) + '.hl7' 56 | var msg = parser.parse(hl7MessageString); 57 | 58 | fs.mkdirSync('./test/export/') 59 | var fileClient = server.createFileClient('./test/export/'); 60 | 61 | fileClient.send(msg, function(err) { 62 | assert(!err); 63 | 64 | setTimeout(function() { 65 | assert.equal(fs.statSync(path.join('./test/export', newMessageName)).isFile(), true); 66 | fs.unlinkSync(path.join('./test/export', newMessageName)); 67 | fs.rmdirSync('./test/export'); 68 | done(); 69 | }, 5000) 70 | }); 71 | }); 72 | }); 73 | }); 74 | 75 | describe('TcpServer', function() { 76 | var tcpServer 77 | describe('.start()', function() { 78 | this.timeout(10000); 79 | it('should start a tcp server listenting on specified port, and respond to messages', function(done) { 80 | var parser = new hl7.Parser(); 81 | var adt = parser.parse(fs.readFileSync('test/samples/adt.hl7').toString()); 82 | 83 | tcpServer = server.createTcpServer(function(err, req, res) { 84 | res.end(); 85 | }); 86 | 87 | tcpServer.start(8686); 88 | 89 | setTimeout(function() { 90 | var tcpClient = server.createTcpClient({ host: '127.0.0.1', port: 8686 }); 91 | 92 | tcpClient.send(adt, function(ack) { 93 | done(); 94 | }); 95 | }, 1000); 96 | 97 | }); 98 | it('should work correctly if message sent as 2 parts', function(done) { 99 | var parser = new hl7.Parser(); 100 | var adt = parser.parse(fs.readFileSync('test/samples/adt.hl7').toString()); 101 | 102 | setTimeout(function() { 103 | var rawTcpClient = net.connect({host: '127.0.0.1', port: 8686}); 104 | 105 | rawTcpClient.on('data', function(data) { 106 | rawTcpClient.end(); 107 | done(); 108 | }); 109 | 110 | var part1 = adt.toString().substring(0, 10); 111 | var part2 = adt.toString().substring(10, adt.toString().length); 112 | 113 | rawTcpClient.write(VT + part1); 114 | setTimeout(function() { 115 | rawTcpClient.write(part2 + FS + CR); 116 | }, 2000) 117 | }, 1000); 118 | }); 119 | it('should keep connection open and still work', function(done) { 120 | var parser = new hl7.Parser(); 121 | var adt = parser.parse(fs.readFileSync('test/samples/adt.hl7').toString()); 122 | 123 | setTimeout(function() { 124 | var tcpClient = server.createTcpClient({ host: '127.0.0.1', port: 8686, keepalive: true }); 125 | 126 | tcpClient.send(adt, function(ack) { 127 | setTimeout(function() { 128 | setTimeout(function() { 129 | tcpClient.send(adt, function(ack) { 130 | tcpClient.close(); 131 | done(); 132 | }); 133 | }, 1000); 134 | }); 135 | }); 136 | }, 1000); 137 | }); 138 | it('should handle no server', function(done) { 139 | var parser = new hl7.Parser(); 140 | var adt = parser.parse(fs.readFileSync('test/samples/adt.hl7').toString()); 141 | var tcpClient = server.createTcpClient({ host: '127.0.0.1', port: 9999, keepalive: true }); 142 | tcpClient.send(adt, function(err) { 143 | console.log('here is the error ' + err.message); 144 | done(); 145 | }); 146 | }); 147 | }); 148 | 149 | describe('.stop()', function() { 150 | it('should stop the tcp server', function() { 151 | tcpServer.stop() 152 | }); 153 | }); 154 | }); 155 | 156 | --------------------------------------------------------------------------------