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convertToXml.js
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convertToXml.js
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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.ConvertToXml = void 0;
const convert = require("xml-js");
const parseConformance_1 = require("./parseConformance");
const xmlHelper_1 = require("./xmlHelper");
const constants_1 = require("./constants");
class ConvertToXml {
constructor(parser) {
this.attributeProperties = {
'Extension': 'url'
};
this.parser = parser || new parseConformance_1.ParseConformance(true);
}
convert(obj) {
if (obj.hasOwnProperty('resourceType')) {
const xmlObj = this.resourceToXML(obj);
return convert.js2xml(xmlObj);
}
}
resourceToXML(obj, xmlObj) {
const resourceElement = {
type: 'element',
name: obj.resourceType,
attributes: {
xmlns: 'http://hl7.org/fhir'
},
elements: []
};
if (!xmlObj) {
xmlObj = {
declaration: {
attributes: {
version: '1.0',
encoding: 'UTF-8'
}
},
elements: [resourceElement]
};
}
if (!this.parser.parsedStructureDefinitions[obj.resourceType]) {
throw new Error('Unknown resource type: ' + obj.resourceType);
}
const properties = this.parser.parsedStructureDefinitions[obj.resourceType]._properties || [];
for (const property of properties) {
this.propertyToXML(resourceElement, this.parser.parsedStructureDefinitions[obj.resourceType], obj, property._name);
}
return xmlObj;
}
propertyToXML(parentXmlObj, parentType, obj, propertyName, parentPropertyType) {
const isAttribute = (propertyName === 'id' && !!parentPropertyType) || this.attributeProperties[parentPropertyType] === propertyName;
if (propertyName.startsWith('_'))
return;
const propertyType = parentType._properties.find(property => property._name == propertyName);
function xmlEscapeString(value) {
return value
.replace(/&/g, '&')
.replace(/</g, '<')
.replace(/>/g, '>')
.replace(/\r/g, '
')
.replace(/\n/g, '
');
}
const pushProperty = (value, extra) => {
const nextXmlObj = {
type: 'element',
name: propertyName,
elements: [],
attributes: {}
};
if (extra) {
if (extra.id) {
nextXmlObj.attributes.id = extra.id;
}
if (extra.fhir_comments) {
for (const fhirComment of extra.fhir_comments) {
parentXmlObj.elements.push({ type: 'comment', comment: fhirComment });
}
}
if (extra.extension) {
const extensionStructure = this.parser.parsedStructureDefinitions['Extension'];
this.propertyToXML(nextXmlObj, extensionStructure, extra, 'extension');
}
}
switch (propertyType._type) {
case 'string':
case 'base64Binary':
case 'code':
case 'id':
case 'markdown':
case 'uri':
case 'url':
case 'canonical':
case 'oid':
case 'boolean':
case 'integer':
case 'decimal':
case 'unsignedInt':
case 'positiveInt':
case 'date':
case 'dateTime':
case 'time':
case 'instant':
const actual = !value || !(typeof value === 'string') ? value : xmlEscapeString(value);
nextXmlObj.attributes.value = actual;
break;
case 'xhtml':
if (propertyName === 'div' && value) {
let divXmlObj;
try {
divXmlObj = convert.xml2js(value);
divXmlObj = xmlHelper_1.XmlHelper.escapeInvalidCharacters(divXmlObj);
}
catch (ex) {
throw new Error('The embedded xhtml is not properly formatted/escaped: ' + ex.message);
}
if (divXmlObj.elements.length === 1 && divXmlObj.elements[0].name === 'div') {
divXmlObj.elements[0].attributes = divXmlObj.elements[0].attributes || {};
divXmlObj.elements[0].attributes.xmlns = 'http://www.w3.org/1999/xhtml';
nextXmlObj.elements = divXmlObj.elements[0].elements;
nextXmlObj.attributes = divXmlObj.elements[0].attributes;
}
}
break;
case 'Resource':
if (value) {
const elements = this.resourceToXML(value).elements;
for (const e in elements) {
if (elements[e].attributes) {
delete elements[e].attributes.xmlns;
}
}
nextXmlObj.elements.push(...elements);
}
break;
case 'Element':
case 'BackboneElement':
for (const x in propertyType._properties) {
const nextProperty = propertyType._properties[x];
this.propertyToXML(nextXmlObj, propertyType, value, nextProperty._name, propertyType._type);
}
break;
default:
let nextType = this.parser.parsedStructureDefinitions[propertyType._type];
if (propertyType._type.startsWith('#')) {
const typeSplit = propertyType._type.substring(1).split('.');
for (let i = 0; i < typeSplit.length; i++) {
if (i == 0) {
nextType = this.parser.parsedStructureDefinitions[typeSplit[i]];
}
else {
nextType = nextType._properties.find(nextTypeProperty => nextTypeProperty._name === typeSplit[i]);
}
if (!nextType) {
break;
}
}
}
if (!nextType) {
console.log('Could not find type ' + propertyType._type);
}
else {
for (const nextProperty of nextType._properties) {
this.propertyToXML(nextXmlObj, nextType, value, nextProperty._name, propertyType._type);
}
}
}
let hasAttributes = false;
const hasElements = nextXmlObj.elements && nextXmlObj.elements.length > 0;
if (nextXmlObj.attributes) {
for (const attrKey in nextXmlObj.attributes) {
if (nextXmlObj.attributes[attrKey] || nextXmlObj.attributes[attrKey] === false || nextXmlObj.attributes[attrKey] === 0) {
hasAttributes = true;
}
}
}
if (isAttribute && nextXmlObj.attributes && nextXmlObj.attributes.hasOwnProperty('value')) {
if (!parentXmlObj.attributes) {
parentXmlObj.attributes = {};
}
parentXmlObj.attributes[nextXmlObj.name] = nextXmlObj.attributes['value'];
}
else if (hasAttributes || hasElements) {
parentXmlObj.elements.push(nextXmlObj);
}
};
if (obj) {
let extra;
if (propertyType._multiple && obj[propertyName]) {
for (let i = 0; i < obj[propertyName].length; i++) {
if (constants_1.Constants.PrimitiveTypes.indexOf(propertyType._type) >= 0) {
if (obj['_' + propertyName]) {
extra = obj['_' + propertyName][i];
}
}
else {
extra = {
fhir_comments: obj[propertyName][i].fhir_comments
};
}
pushProperty(obj[propertyName][i], extra);
}
}
else {
if (constants_1.Constants.PrimitiveTypes.indexOf(propertyType._type) >= 0) {
extra = obj['_' + propertyName];
}
else if (obj[propertyName]) {
extra = {
fhir_comments: obj[propertyName].fhir_comments
};
}
pushProperty(obj[propertyName], extra);
}
}
}
}
exports.ConvertToXml = ConvertToXml;
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