cadesjs/build/ContentHints.js

CAdESjs gives you an ability to make CAdES signatures on pure JavaScript. The libray made with latest CAdES standards in mind

"use strict";

Object.defineProperty(exports, "__esModule", {
	value: true
});

var _asn1js = require("asn1js");

var asn1js = _interopRequireWildcard(_asn1js);

var _pvutils = require("pvutils");

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

//**************************************************************************************
// noinspection JSUnusedGlobalSymbols
class ContentHints {
	//**********************************************************************************
	/**
  * Constructor for ContentHints class
  * @param {Object} [parameters={}]
  * @property {Object} [schema] asn1js parsed value
  */
	constructor(parameters = {}) {
		//region Internal properties of the object
		if ("contentDescription" in parameters)
			/**
    * @type {string}
    * @description contentDescription
    */
			this.contentDescription = (0, _pvutils.getParametersValue)(parameters, "contentDescription", ContentHints.defaultValues("contentDescription"));

		/**
   * @type {string}
   * @description contentType
   */
		this.contentType = (0, _pvutils.getParametersValue)(parameters, "contentType", ContentHints.defaultValues("contentType"));
		//endregion

		//region If input argument array contains "schema" for this object
		if ("schema" in parameters) this.fromSchema(parameters.schema);
		//endregion
	}
	//**********************************************************************************
	/**
  * Return default values for all class members
  * @param {string} memberName String name for a class member
  */
	static defaultValues(memberName) {
		switch (memberName) {
			case "contentDescription":
			case "contentType":
				return "";
			default:
				throw new Error(`Invalid member name for ContentHints class: ${memberName}`);
		}
	}
	//**********************************************************************************
	/**
  * Compare values with default values for all class members
  * @param {string} memberName String name for a class member
  * @param {*} memberValue Value to compare with default value
  */
	static compareWithDefault(memberName, memberValue) {
		switch (memberName) {
			case "contentDescription":
			case "contentType":
				return memberValue === "";
			default:
				throw new Error(`Invalid member name for ContentHints class: ${memberName}`);
		}
	}
	//**********************************************************************************
	/**
  * Return value of asn1js schema for current class
  * @param {Object} parameters Input parameters for the schema
  * @returns {Object} asn1js schema object
  */
	static schema(parameters = {}) {
		// ContentHints ::= SEQUENCE {
		//    contentDescription UTF8String (SIZE (1..MAX)) OPTIONAL,
		//    contentType ContentType }

		/**
   * @type {Object}
   * @property {string} [blockName]
   * @property {string} [contentDescription]
   * @property {string} [contentType]
   */
		const names = (0, _pvutils.getParametersValue)(parameters, "names", {});

		return new asn1js.Sequence({
			name: names.blockName || "",
			value: [new asn1js.Utf8String({
				name: names.contentDescription || "",
				optinal: true
			}), new asn1js.ObjectIdentifier({ name: names.contentType || "" })]
		});
	}
	//**********************************************************************************
	/**
  * Convert parsed asn1js object into current class
  * @param {!Object} schema
  */
	fromSchema(schema) {
		//region Check the schema is valid
		const asn1 = asn1js.compareSchema(schema, schema, ContentHints.schema({
			names: {
				contentDescription: "contentDescription",
				contentType: "contentType"
			}
		}));

		if (asn1.verified === false) throw new Error("Object's schema was not verified against input data for ContentHints");
		//endregion

		//region Get internal properties from parsed schema
		if ("contentDescription" in asn1.result) this.contentDescription = asn1.result.contentDescription.valueBlock.value;

		// noinspection JSUnusedGlobalSymbols
		this.contentType = asn1.result.contentType.valueBlock.toString();
		//endregion
	}
	//**********************************************************************************
	/**
  * Convert current object to asn1js object and set correct values
  * @returns {Object} asn1js object
  */
	toSchema() {
		//region Construct and return new ASN.1 schema for this object
		return new asn1js.Sequence({
			value: [new asn1js.Utf8String({ value: this.contentType }), new asn1js.ObjectIdentifier({ value: this.contentType })]
		});
		//endregion
	}
	//**********************************************************************************
	/**
  * Convertion for the class to JSON object
  * @returns {Object}
  */
	toJSON() {
		return {
			contentDescription: this.contentDescription,
			contentType: this.contentType
		};
	}
	//**********************************************************************************
}
exports.default = ContentHints; //**************************************************************************************
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