@oaklean/profiler-core/dist/src/helper/DataUrlUtils.js

Part of the @oaklean suite. It provides all basic functions to work with the `.oak` file format. It allows parsing the `.oak` file format as well as tools for analyzing the measurement values. It also provides all necessary capabilities required for prec

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.DataUrlUtils = void 0;
// eslint-disable-next-line no-useless-escape
const VALID_DATA_URL_REGEX = /^(data:)([\w\/\+-]*)((?:;charset=[\w-]+)?;base64){0,1},(.*)$/i;
class DataUrlUtils {
    static isDataUrl(s) {
        return VALID_DATA_URL_REGEX.test((s || '').trim());
    }
    static parseDataUrl(s) {
        if (!DataUrlUtils.isDataUrl(s)) {
            return '{}';
        }
        const parts = s.trim().match(VALID_DATA_URL_REGEX);
        if (parts === null || parts[3] === undefined || parts[4] === undefined) {
            return '{}';
        }
        const contentType = parts[3].slice(1);
        const content = parts[4];
        if (contentType !== 'base64' && contentType !== 'charset=utf-8;base64') {
            throw new Error(`DataUrlUtils.parseDataUrl: The Format ${contentType} is not supported`);
        }
        return Buffer.from(content, 'base64').toString('utf-8');
    }
}
exports.DataUrlUtils = DataUrlUtils;
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