@jargon/platform-sdk-core/dist/utils/index.js

Core components of the Jargon Platform SDK for node.js

"use strict";
/*
 * Copyright 2018-2020 Jargon, Inc. or its affiliates. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * or in the "license" file accompanying this file. This file is distributed
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing
 * permissions and limitations under the License.
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.wrapSSML = exports.escapeSSML = void 0;
const ampRegex = /&(?!amp;)/;
const amp = '&';
/**
 * Escapes characters that have special meaning in SSML. Currently only
 * handles ampersands ('&' -> '&')
 * @param s The string to escape
 */
function escapeSSML(s) {
    let match = ampRegex.exec(s);
    if (!match) {
        return s;
    }
    let output = '';
    let i = 0;
    let li = 0;
    for (i = match.index; i < s.length; i++) {
        if (s.charAt(i) === '&') {
            if (li !== i) {
                // Add intervening text
                output += s.substring(li, i);
            }
            li = i + 1;
            output += amp;
        }
    }
    if (li !== i) {
        // Add trailing text
        output += s.substring(li, i);
    }
    return output;
}
exports.escapeSSML = escapeSSML;
/**
 * Wraps the provided string with SSSM 'speak' tags, if not already
 * present.
 * @param ssml The string to wrap
 */
function wrapSSML(ssml) {
    if (!ssml.startsWith('<speak>')) {
        ssml = `<speak>${ssml}</speak>`;
    }
    return ssml;
}
exports.wrapSSML = wrapSSML;
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