text: import * as asn1js from "asn1js";
  import { getParametersValue, clearProps } from "pvutils";
  //**************************************************************************************
  /**
   * Class from RFC5652
   */
  export default class EncapsulatedContentInfo
  {
  	//**********************************************************************************
  	/**
  	 * Constructor for EncapsulatedContentInfo class
  	 * @param {Object} [parameters={}]
  	 * @param {Object} [parameters.schema] asn1js parsed value to initialize the class from
  	 */
  	constructor(parameters = {})
  	{
  		//region Internal properties of the object
  		/**
  		 * @type {string}
  		 * @desc eContentType
  		 */
  		this.eContentType = getParametersValue(parameters, "eContentType", EncapsulatedContentInfo.defaultValues("eContentType"));
  
  		if("eContent" in parameters)
  		{
  			/**
  			 * @type {OctetString}
  			 * @desc eContent
  			 */
  			this.eContent = getParametersValue(parameters, "eContent", EncapsulatedContentInfo.defaultValues("eContent"));
  			if((this.eContent.idBlock.tagClass === 1) &&
  				(this.eContent.idBlock.tagNumber === 4))
  			{
  				//region Divide OCTETSTRING value down to small pieces
  				if(this.eContent.idBlock.isConstructed === false)
  				{
  					const constrString = new asn1js.OctetString({
  						idBlock: { isConstructed: true },
  						isConstructed: true
  					});
  					
  					let offset = 0;
  					let length = this.eContent.valueBlock.valueHex.byteLength;
  					
  					while(length > 0)
  					{
  						const pieceView = new Uint8Array(this.eContent.valueBlock.valueHex, offset, ((offset + 65536) > this.eContent.valueBlock.valueHex.byteLength) ? (this.eContent.valueBlock.valueHex.byteLength - offset) : 65536);
  						const _array = new ArrayBuffer(pieceView.length);
  						const _view = new Uint8Array(_array);
  						
  						for(let i = 0; i < _view.length; i++)
  							_view[i] = pieceView[i];
  						
  						constrString.valueBlock.value.push(new asn1js.OctetString({ valueHex: _array }));
  						
  						length -= pieceView.length;
  						offset += pieceView.length;
  					}
  					
  					this.eContent = constrString;
  				}
  				//endregion
  			}
  		}
  		//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 "eContentType":
  				return "";
  			case "eContent":
  				return new asn1js.OctetString();
  			default:
  				throw new Error(`Invalid member name for EncapsulatedContentInfo 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 "eContentType":
  				return (memberValue === "");
  			case "eContent":
  				{
  					if((memberValue.idBlock.tagClass === 1) && (memberValue.idBlock.tagNumber === 4))
  						return (memberValue.isEqual(EncapsulatedContentInfo.defaultValues("eContent")));
  					
  					return false;
  				}
  			default:
  				throw new Error(`Invalid member name for EncapsulatedContentInfo class: ${memberName}`);
  		}
  	}
  	//**********************************************************************************
  	/**
  	 * Return value of pre-defined ASN.1 schema for current class
  	 *
  	 * ASN.1 schema:
  	 * ```asn1
  	 * EncapsulatedContentInfo ::= SEQUENCE {
  	 *    eContentType ContentType,
  	 *    eContent [0] EXPLICIT OCTET STRING OPTIONAL } * Changed it to ANY, as in PKCS#7
  	 * ```
  	 *
  	 * @param {Object} parameters Input parameters for the schema
  	 * @returns {Object} asn1js schema object
  	 */
  	static schema(parameters = {})
  	{
  		/**
  		 * @type {Object}
  		 * @property {string} [blockName]
  		 * @property {string} [type]
  		 * @property {string} [setName]
  		 * @property {string} [values]
  		 */
  		const names = getParametersValue(parameters, "names", {});
  		
  		return (new asn1js.Sequence({
  			name: (names.blockName || ""),
  			value: [
  				new asn1js.ObjectIdentifier({ name: (names.eContentType || "") }),
  				new asn1js.Constructed({
  					optional: true,
  					idBlock: {
  						tagClass: 3, // CONTEXT-SPECIFIC
  						tagNumber: 0 // [0]
  					},
  					value: [
  						new asn1js.Any({ name: (names.eContent || "") }) // In order to aling this with PKCS#7 and CMS as well
  					]
  				})
  			]
  		}));
  	}
  	//**********************************************************************************
  	/**
  	 * Convert parsed asn1js object into current class
  	 * @param {!Object} schema
  	 */
  	fromSchema(schema)
  	{
  		//region Clear input data first
  		clearProps(schema, [
  			"eContentType",
  			"eContent"
  		]);
  		//endregion
  		
  		//region Check the schema is valid
  		const asn1 = asn1js.compareSchema(schema,
  			schema,
  			EncapsulatedContentInfo.schema({
  				names: {
  					eContentType: "eContentType",
  					eContent: "eContent"
  				}
  			})
  		);
  
  		if(asn1.verified === false)
  			throw new Error("Object's schema was not verified against input data for EncapsulatedContentInfo");
  		//endregion
  
  		//region Get internal properties from parsed schema
  		this.eContentType = asn1.result.eContentType.valueBlock.toString();
  		if("eContent" in asn1.result)
  			this.eContent = asn1.result.eContent;
  		//endregion
  	}
  	//**********************************************************************************
  	/**
  	 * Convert current object to asn1js object and set correct values
  	 * @returns {Object} asn1js object
  	 */
  	toSchema()
  	{
  		//region Create array for output sequence 
  		const outputArray = [];
  		
  		outputArray.push(new asn1js.ObjectIdentifier({ value: this.eContentType }));
  		if("eContent" in this)
  		{
  			if(EncapsulatedContentInfo.compareWithDefault("eContent", this.eContent) === false)
  			{
  				outputArray.push(new asn1js.Constructed({
  					optional: true,
  					idBlock: {
  						tagClass: 3, // CONTEXT-SPECIFIC
  						tagNumber: 0 // [0]
  					},
  					value: [this.eContent]
  				}));
  			}
  		}
  		//endregion 
  		
  		//region Construct and return new ASN.1 schema for this object 
  		return (new asn1js.Sequence({
  			value: outputArray
  		}));
  		//endregion 
  	}
  	//**********************************************************************************
  	/**
  	 * Convertion for the class to JSON object
  	 * @returns {Object}
  	 */
  	toJSON()
  	{
  		const _object = {
  			eContentType: this.eContentType
  		};
  
  		if("eContent" in this)
  		{
  			if(EncapsulatedContentInfo.compareWithDefault("eContent", this.eContent) === false)
  				_object.eContent = this.eContent.toJSON();
  		}
  
  		return _object;
  	}
  	//**********************************************************************************
  }
  //**************************************************************************************
  