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import _ from "lodash";
import async from "async";
import bag from "bagofcli";
import * as cheerio from "cheerio";
import { mkdirp } from "mkdirp";
import f from "file";
import fs from "fs";
import functions from "./functions.js";
import jazz from "jazz";
import p from "path";
import { fileURLToPath } from "url";
import util from "util";
const DIRNAME = p.dirname(fileURLToPath(import.meta.url));
/**
* class Engine
*/
class Engine {
/**
* @param {String} opts: optional
* - ext: template file extension, files without this extension will be ignored.
*/
constructor(opts) {
opts = opts || {};
this.ext = opts.ext || "html";
this.version =
opts.version ||
JSON.parse(fs.readFileSync(p.join(DIRNAME, "../package.json"))).version;
}
/**
* Compile all template files (identified by file extension) in a directory.
* This can be done in parallel because compiling a template does not depend on other templates.
*
* @param {String} dir: directory containing the templates
* @param {Function} cb: standard cb(err, result) callback
*/
compile(dir, cb) {
const tasks = {},
self = this;
function _task(base, file) {
const baseFile = p.join(base, file);
const baseUrlPath = baseFile.replace(/\\/g, "/");
tasks[baseUrlPath.substr(baseUrlPath.indexOf("/") + 1)] = function (cb) {
fs.readFile(baseFile, "utf8", function (err, result) {
cb(err, jazz.compile(result));
});
};
}
f.walkSync(dir, function (base, dirs, files) {
files.forEach(function (file) {
if (file.match(new RegExp("\\." + self.ext))) {
_task(base, file);
}
});
});
async.parallel(tasks, cb);
}
/**
* Compile all template files (identified by file extension) in a directory.
* This can be done in parallel because compiling a template does not depend on other templates.
*
* @param {String} dir: output directory where website files will be written to
* @param {Object} templates: compiled jazz templates
* @param {Object} params: template parameters and functions
* @param {Function} cb: standard cb(err, result) callback
*/
merge(dir, templates, params, cb) {
const self = this;
// merge a set of params to a set of templates
function _process(templates, params, cb) {
const _templates = _.extend(templates, {}), // process template copies, not the originals
tasks = {};
_.keys(_templates).forEach(function (key) {
tasks[key] = function (cb) {
_templates[key].process(params, function (data) {
cb(null, data);
});
};
});
async.parallel(tasks, function (err, results) {
cb(results);
});
}
const tasks = {};
_.keys(templates.pages).forEach(function (page) {
tasks[page] = function (cb) {
let pageParams = _.extend(
_.extend({}, params),
functions(page, templates, params),
);
let pageContent;
function _mergePartials(cb) {
_process(templates.partials, pageParams, (result) => {
pageParams.partials = result;
pageParams = _.extend(
pageParams,
functions(page, templates, pageParams),
);
_process(templates.partials, pageParams, (result) => {
pageParams.partials = result;
cb();
});
});
}
function _mergePage(cb) {
_process(
{ currpage: templates.pages[page] },
pageParams,
(result) => {
pageParams.content = result.currpage;
cb();
},
);
}
function _mergeLayout(cb) {
const layout =
pageParams.sitemap &&
pageParams.sitemap[page] &&
pageParams.sitemap[page].layout
? pageParams.sitemap[page].layout
: "default.html";
_process(
{ currlayout: templates.layouts[layout] },
pageParams,
(result) => {
const $ = cheerio.load(result.currlayout);
$("head").append(
util.format(
'<meta name="generator" content="AE86 %s" />',
self.version,
),
);
pageContent = $.html();
cb();
},
);
}
function _writePage(cb) {
mkdirp.sync(p.join(dir, page).replace(/(\/[^\/]+$|\\[^\\]+$)/, ""));
fs.writeFile(p.join(dir, page), pageContent, "utf8", function (err) {
if (!err) {
bag.logStepItemSuccess(
util.format("creating %s", p.join(dir, page)),
);
}
cb(err);
});
}
async.series(
[_mergePartials, _mergePage, _mergeLayout, _writePage],
cb,
);
};
});
async.parallel(tasks, function (err, results) {
cb(err, _.keys(results));
});
}
}
export { Engine as default };
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