text-stream-search/dist/searches/regex-search.js

Searches for occurrences of a given search term in Node.js text streams

/**
 * RegexSearch looks for the given regex in the text stream.
 */
export class RegexSearch {
    constructor(regex, resolve, reject, text, timeoutDuration) {
        this.resolve = resolve;
        this.reject = reject;
        this.text = text;
        this.searchRegexp = new RegExp(regex);
        if (timeoutDuration != null) {
            this.timeoutDuration = timeoutDuration;
            setTimeout(this.onTimeout.bind(this), timeoutDuration);
        }
    }
    /** Scan checks the stream text for occurrences of the searchRegexp. */
    scan() {
        const matches = this.searchRegexp.exec(this.text.toString());
        if (matches) {
            const match = matches[0];
            if (match == null) {
                throw new Error(`Regex "{this.regex}" does not contain a capture group`);
            }
            this.resolve(match);
        }
    }
    /** OnTimeOut is called after this subscription times out. */
    onTimeout() {
        var _a;
        this.reject(new Error(`Regex ${this.searchRegexp.toString()} not found within ${(_a = this.timeoutDuration) !== null && _a !== void 0 ? _a : -1} ms. The captured text so far is:\n${this.text.toString()}`));
    }
}
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