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433 lines
14 KiB
HTML
Executable file
433 lines
14 KiB
HTML
Executable file
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<div id="main">
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<h1 class="page-title">Source: core/Dish.js</h1>
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<section>
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<article>
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<pre
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class="sunlight-highlight-javascript linenums">/**
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* The data being operated on by each operation.
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*
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* @author n1474335 [n1474335@gmail.com]
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* @copyright Crown Copyright 2016
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* @license Apache-2.0
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*
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* @class
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* @param {byte_array|string|number} value - The value of the input data.
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* @param {number} type - The data type of value, see Dish enums.
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*/
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var Dish = function(value, type) {
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this.value = value || typeof value == "string" ? value : null;
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this.type = type || Dish.BYTE_ARRAY;
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};
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/**
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* Dish data type enum for byte arrays.
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* @readonly
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* @enum
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*/
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Dish.BYTE_ARRAY = 0;
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/**
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* Dish data type enum for strings.
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* @readonly
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* @enum
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*/
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Dish.STRING = 1;
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/**
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* Dish data type enum for numbers.
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* @readonly
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* @enum
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*/
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Dish.NUMBER = 2;
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/**
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* Dish data type enum for HTML.
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* @readonly
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* @enum
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*/
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Dish.HTML = 3;
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/**
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* Returns the data type enum for the given type string.
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*
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* @static
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* @param {string} type_str - The name of the data type.
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* @returns {number} The data type enum value.
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*/
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Dish.type_enum = function(type_str) {
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switch (type_str) {
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case "byte_array":
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case "Byte array":
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return Dish.BYTE_ARRAY;
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case "string":
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case "String":
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return Dish.STRING;
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case "number":
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case "Number":
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return Dish.NUMBER;
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case "html":
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case "HTML":
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return Dish.HTML;
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default:
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throw "Invalid data type string. No matching enum.";
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}
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};
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/**
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* Returns the data type string for the given type enum.
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*
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* @static
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* @param {string} type_enum - The enum value of the data type.
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* @returns {number} The data type as a string.
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*/
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Dish.enum_lookup = function(type_enum) {
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switch (type_enum) {
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case Dish.BYTE_ARRAY:
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return "byte_array";
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case Dish.STRING:
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return "string";
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case Dish.NUMBER:
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return "number";
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case Dish.HTML:
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return "html";
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default:
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throw "Invalid data type enum. No matching type.";
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}
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};
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/**
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* Sets the data value and type and then validates them.
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*
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* @param {byte_array|string|number} value - The value of the input data.
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* @param {number} type - The data type of value, see Dish enums.
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*/
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Dish.prototype.set = function(value, type) {
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this.value = value;
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this.type = type;
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if (!this.valid()) {
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var sample = Utils.truncate(JSON.stringify(this.value), 13);
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throw "Data is not a valid " + Dish.enum_lookup(type) + ": " + sample;
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}
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};
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/**
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* Returns the value of the data in the type format specified.
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*
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* @param {number} type - The data type of value, see Dish enums.
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* @returns {byte_array|string|number} The value of the output data.
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*/
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Dish.prototype.get = function(type) {
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if (this.type != type) {
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this.translate(type);
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}
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return this.value;
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};
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/**
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* Translates the data to the given type format.
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*
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* @param {number} to_type - The data type of value, see Dish enums.
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*/
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Dish.prototype.translate = function(to_type) {
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// Convert data to intermediate byte_array type
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switch (this.type) {
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case Dish.STRING:
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this.value = this.value ? Utils.str_to_byte_array(this.value) : [];
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this.type = Dish.BYTE_ARRAY;
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break;
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case Dish.NUMBER:
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this.value = typeof this.value == "number" ? Utils.str_to_byte_array(this.value.toString()) : [];
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this.type = Dish.BYTE_ARRAY;
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break;
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case Dish.HTML:
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this.value = this.value ? Utils.str_to_byte_array(Utils.strip_html_tags(this.value, true)) : [];
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this.type = Dish.BYTE_ARRAY;
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break;
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default:
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break;
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}
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// Convert from byte_array to to_type
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switch (to_type) {
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case Dish.STRING:
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case Dish.HTML:
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this.value = this.value ? Utils.byte_array_to_utf8(this.value) : "";
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this.type = Dish.STRING;
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break;
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case Dish.NUMBER:
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this.value = this.value ? parseFloat(Utils.byte_array_to_utf8(this.value)) : 0;
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this.type = Dish.NUMBER;
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break;
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default:
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break;
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}
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};
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/**
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* Validates that the value is the type that has been specified.
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* May have to disable parts of BYTE_ARRAY validation if it effects performance.
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*
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* @returns {boolean} Whether the data is valid or not.
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*/
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Dish.prototype.valid = function() {
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switch (this.type) {
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case Dish.BYTE_ARRAY:
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if (!(this.value instanceof Array)) {
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return false;
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}
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// Check that every value is a number between 0 - 255
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for (var i = 0; i < this.value.length; i++) {
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if (typeof this.value[i] != "number" ||
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this.value[i] < 0 ||
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this.value[i] > 255) {
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return false;
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}
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}
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return true;
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case Dish.STRING:
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case Dish.HTML:
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if (typeof this.value == "string") {
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return true;
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}
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return false;
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case Dish.NUMBER:
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if (typeof this.value == "number") {
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return true;
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}
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return false;
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default:
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return false;
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}
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};
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</pre>
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</article>
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</section>
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© Crown Copyright 2016
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.4.3</a>
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