73 lines
2.1 KiB
JavaScript
73 lines
2.1 KiB
JavaScript
(function (scope) {
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'use strict';
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var TITLE_RE = /<title>([\s\S]*?)<\/title>/i;
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var TEMPLATE_RE = /data-template="([a-z0-9_-]+)"/i;
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var TEMPLATES = './templates/';
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var NAMES = [
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'base.njk',
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'page.njk',
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'book.njk',
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'index.njk',
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'version.njk',
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'notice.njk'
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];
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scope.TEMPLATE_URLS = NAMES.map(function (name) { return TEMPLATES + name; });
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scope.createRenderer = function (readText) {
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function Loader() {}
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Loader.prototype.async = true;
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Loader.prototype.getSource = function (name, callback) {
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readText(TEMPLATES + name).then(
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function (src) { callback(null, { src: src, path: name, noCache: false }); },
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function (err) { callback(err); });
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};
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var env = new nunjucks.Environment(new Loader(), { autoescape: true });
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var loaded = null;
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// Nunjucks resolves {% include %} asynchronously. A template that is not
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// compiled yet when the render reaches it is skipped, taking the rest of
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// the block it sits in with it, and the render still succeeds.
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function loadAll() {
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if (!loaded) {
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loaded = Promise.all(NAMES.map(function (name) {
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return new Promise(function (resolve) {
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env.getTemplate(name, true, null, false, function () { resolve(); });
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});
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}));
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}
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return loaded;
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}
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function render(name, context) {
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return loadAll().then(function () {
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return new Promise(function (resolve, reject) {
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env.render(name, context, function (err, out) {
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return err ? reject(err) : resolve(out);
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});
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});
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});
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}
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return {
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render: render,
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compose: function (fragment) {
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var title = (TITLE_RE.exec(fragment) || ['', ''])[1].trim();
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var content = fragment.replace(TITLE_RE, '');
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var name = (TEMPLATE_RE.exec(content) || ['', 'page'])[1] + '.njk';
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return render(name, { title: title, content: content });
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},
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notice: function (heading, text) {
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return render('notice.njk', { heading: heading, text: text });
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}
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};
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};
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})(self);
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