42 lines
1.0 KiB
JavaScript
42 lines
1.0 KiB
JavaScript
/* global hexo */
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'use strict'
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hexo.extend.filter.register('after_post_render', function (data) {
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const config = this.config;
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const url = new URL(config.url);
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const siteHost = url.hostname || config.url;
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// Match 'a' tags that don't contain html children.
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const regPureATag = /<a([^>]*)href="([^"]*)"([^>]*)>([^<]*)<\/a>/gim
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data.content = data.content.replace(regPureATag, function (
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match,
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attrBegin,
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href,
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attrEnd,
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html
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) {
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// Exit if the href attribute doesn't exists.
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if (!href) return match;
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let link = '';
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try {
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link = new URL(href);
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} catch (e) {
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// Invalid url, e.g. Anchor link.
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return match;
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}
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// Exit if the url has same host with `config.url`, which means isn't an external link.
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if (!link.protocol || link.hostname === siteHost) return match;
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return (
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`<a class="link" ${attrBegin} href="${href}" ${attrEnd}>${html}<i class="fas fa-external-link-alt"></i></a>`
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)
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})
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},
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0
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)
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