xsd2jsonschema/examples/convert-and-save.js

A pure JavaScript library for converting complex XML Schemas into equivalent JSON Schemas.

/**
 *  Basic Xsd2JsonSchema usage sample.
 */

"use strict";

const fs = require('fs');
const URI = require('urijs');

const Xsd2JsonSchema = require('xsd2jsonschema').Xsd2JsonSchema;

const xsdSchemas = {
	'BaseTypes.xsd': `
					<?xml version="1.0" encoding="UTF-8"?>
					<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://www.xsd2jsonschema.org/example" targetNamespace="http://www.xsd2jsonschema.org/example" elementFormDefault="qualified" attributeFormDefault="unqualified" version="1.0.0">
						<!--Character-->
						<xs:simpleType name="C">
							<xs:restriction base="xs:string">
								<xs:minLength value="1"/>
							</xs:restriction>
						</xs:simpleType>
						<!--Boolean-->
						<xs:simpleType name="Boolean">
							<xs:restriction base="xs:boolean"/>
						</xs:simpleType>
						<!--Year, YrMon, Date, Time, DateTime, Timestamp-->
						<xs:simpleType name="Year">
							<xs:restriction base="xs:gYear"/>
						</xs:simpleType>
						<xs:simpleType name="YrMon">
							<xs:restriction base="xs:gYearMonth"/>
						</xs:simpleType>
						<xs:simpleType name="Date">
							<xs:restriction base="xs:date"/>
						</xs:simpleType>
						<xs:simpleType name="Time">
							<xs:restriction base="xs:time"/>
						</xs:simpleType>
						<xs:simpleType name="DateTime">
							<xs:restriction base="xs:dateTime"/>
						</xs:simpleType>
						<xs:simpleType name="Timestamp">
							<xs:restriction base="xs:dateTime"/>
						</xs:simpleType>
						<!--Integer-->
						<xs:simpleType name="Integer">
							<xs:restriction base="xs:integer"/>
						</xs:simpleType>
						<!--Universal Resource Identifier (URI)-->
						<xs:simpleType name="URI">
							<xs:restriction base="xs:anyURI">
								<xs:minLength value="1"/>
							</xs:restriction>
						</xs:simpleType>
						<!--Binary-->
						<xs:simpleType name="Binary">
							<xs:restriction base="xs:base64Binary"/>
						</xs:simpleType>
						<xs:simpleType name="Duration">
							<xs:restriction base="xs:duration"/>
						</xs:simpleType>
						<xs:simpleType name="Char_20">
							<xs:restriction base="C">
								<xs:minLength value="1"/>
								<xs:maxLength value="20"/>
							</xs:restriction>
						</xs:simpleType>
					</xs:schema>`,
	'ExampleTypes.xsd': `
						<?xml version="1.0" encoding="UTF-8"?>
						<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://www.xsd2jsonschema.org/example" targetNamespace="http://www.xsd2jsonschema.org/example" elementFormDefault="qualified" attributeFormDefault="unqualified" version="1.0.0">
							<xs:import schemaLocation="BaseTypes.xsd"/>
							<xs:complexType name="PersonInfoType">
								<xs:sequence>
									<xs:element name="PersonName" type="PersonNameType"/>
									<xs:element name="Age" type="Integer" minOccurs="0"/>
									<xs:element name="BirthDate" type="Date"/>
								</xs:sequence>
							</xs:complexType>
							<xs:complexType name="PersonNameType">
								<xs:sequence>
									<xs:element name="FirstName" type="Char_20"/>
									<xs:element name="MiddleName" type="Char_20" minOccurs="0"/>
									<xs:element name="LastName" type="Char_20"/>
									<xs:element name="AliasName" type="Char_20" minOccurs="0" maxOccurs="unbounded"/>
								</xs:sequence>
							</xs:complexType>
						</xs:schema>`
}

function writeJsonSchemas(jsonSchemas, outputDir, spacing) {
	if (jsonSchemas == undefined) {
		throw new Error('The parameter jsonSchema is required');
	}
	if (spacing == undefined) {
		spacing = '\t';
	}
	Object.keys(jsonSchemas).forEach((uri) => {
		let jsonSchema = jsonSchemas[uri];
		let fullFilename = new URI(outputDir).segment(jsonSchema.filename);
		let fileContent = JSON.stringify(jsonSchema.getJsonSchema(), null, spacing);
		console.log(`Saving ${fullFilename}`);
		fs.writeFileSync(fullFilename.toString(), fileContent);
	})
}

const xs2js = new Xsd2JsonSchema();
let jsonSchemas = xs2js.processAllSchemas({
	schemas: xsdSchemas
});

writeJsonSchemas(jsonSchemas, 'examples/generated_jsonschema', '  ');