@rr0/cms/dist/time/SsiTitleReplaceCommand.js

RR0 Content Management System (CMS)

import { SsiEchoVarReplaceCommand } from "ssg-api";
/**
 * Replaces the SSI expression "<!--#echo var="title" -->" by the page's <title> content,
 * with a link if there's a <meta name="url"> content.
 */
export class SsiTitleReplaceCommand extends SsiEchoVarReplaceCommand {
    /**
     * @param defaultHandlers Will generate a title for a given context/file, if no title is found.
     */
    constructor(defaultHandlers = []) {
        super("title");
        this.defaultHandlers = defaultHandlers;
    }
    async createReplacer(context) {
        return {
            replace: (_match, ..._args) => {
                const titleStr = this.getTitle(context);
                context.file.title = titleStr;
                const titleUrl = context.file.meta.url;
                return titleUrl ? `<a href="${titleUrl}" target="_blank">${titleStr}</a>` : titleStr;
            }
        };
    }
    getTitle(context) {
        let title = context.file.title;
        if (!title) {
            this.defaultHandlers.some(handle => !title && (title = handle(context)));
        }
        if (!title) {
            title = context.file.name;
        }
        return title;
    }
}