@sdoc/markdown-loader/lib/markdown/link.js

san markdown loader

/**
 * @file 将相对.md 换成 html，href 是外链添加 blank
 * @author ksky521
 */
const {getRelativeLink} = require('../utils');

function markdownitLink(md, configs = {}) {
    let pathRelative = getRelativeLink;
    if (typeof configs.relativeLink === 'function') {
        pathRelative = configs.relativeLink;
    }
    md.renderer.rules.link_open = (tokens, idx, options, env, self) => {
        const token = tokens[idx];
        const hrefIndex = token.attrIndex('href');
        if (hrefIndex >= 0) {
            let href = token.attrs[hrefIndex][1];
            if (href && /^https?:\/\//.test(href)) {
                // 添加 target
                let aIndex = token.attrIndex('target');

                if (aIndex < 0) {
                    token.attrPush(['target', '_blank']);
                }
                else {
                    token.attrs[aIndex][1] = '_blank';
                }
            }
            if (/^[\.\/]+.*?\.md$/.test(href)) {
                href = pathRelative(configs.relativeLink, href, configs.rootUrl || '/');
            }
            token.attrs[hrefIndex][1] = href;
        }

        return self.renderToken(tokens, idx, options, env, self);
    };
}

module.exports = markdownitLink;