@rr0/cms/dist/anchor/AnchorReplacer.js

RR0 Content Management System (CMS)

export class AnchorReplacer {
    constructor(baseUrl, handlers) {
        this.handlers = handlers;
        this.baseUrl = baseUrl.endsWith("/") ? baseUrl : baseUrl + "/";
    }
    async replacement(context, a) {
        const href = a.href;
        const baseUrl = this.baseUrl + context.file.name;
        try {
            if (href.startsWith("http") && !href.startsWith(this.baseUrl)) {
                this.updateLinkExternal(context, a);
            }
            else {
                const url = new URL(href, baseUrl);
                await this.updateLinkInternal(context, a, url);
            }
        }
        catch (e) {
            throw Error(e + ": " + href);
        }
        return a;
    }
    /**
     * Update a link to denote it as external.
     *
     * @param context
     * @param a
     * @protected
     */
    updateLinkExternal(context, a) {
        a.target = "_blank";
        a.title = new URL(a.href).host;
        context.debug("Adding target in", a.outerHTML);
    }
    async updateLinkInternal(context, a, url) {
        if (url.protocol.startsWith("http")) {
            const pathname = url.pathname;
            const pathToSearch = pathname.substring(1);
            if (pathToSearch) {
                for (const handler of this.handlers) {
                    await handler.handle(context, a, pathToSearch);
                }
            }
            if (pathname.indexOf(".") < 0 && !pathname.endsWith("/") && !url.hash) {
                a.href += "/";
                context.debug("Added trailing slash in", a.outerHTML);
            }
        }
    }
}