opentype.features.js/lib/opentype/src/substitution.js

Library to list opentype fonts optional features.

"use strict";
// The Substitution object provides utility methods to manipulate
// the GSUB substitution table.
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var layout_1 = __importDefault(require("./layout"));
/**
 * @exports opentype.Substitution
 * @class
 * @extends opentype.Layout
 * @param {opentype.Font}
 * @constructor
 */
function Substitution(font) {
    layout_1.default.call(this, font, 'gsub');
}
Substitution.prototype = layout_1.default.prototype;
/**
 * Create a default GSUB table.
 * @return {Object} gsub - The GSUB table.
 */
Substitution.prototype.createDefaultTable = function () {
    // Generate a default empty GSUB table with just a DFLT script and dflt lang sys.
    return {
        version: 1,
        scripts: [{
                tag: 'DFLT',
                script: {
                    defaultLangSys: { reserved: 0, reqFeatureIndex: 0xffff, featureIndexes: [] },
                    langSysRecords: []
                }
            }],
        features: [],
        lookups: []
    };
};
exports.default = Substitution;