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gulpfile.js
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gulpfile.js
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const path = require('path')
const {series, parallel, src, dest, watch} = require('gulp')
const clean = require('gulp-clean')
const rename = require('gulp-rename')
const marked = require('gulp-marked')
var Vinyl = require('vinyl');
const frontMatter = require('gulp-front-matter')
const through2 = require('through2')
const twig = require('twig')
const liveServer = require("live-server");
twig.cache = false;
var site = require('./site.json');
site.time = new Date();
function applyTemplate(templateFile) {
const tplFile = path.join(__dirname, templateFile)
return through2.obj(function (file, enc, cb) {
var data = {
site: site,
page: file.page,
content: file.contents.toString()
};
twig.renderFile(tplFile, data, function(err, html) {
if (err === null) {
file.contents = Buffer.from(html, 'utf8')
}
cb(err, file)
})
})
}
function summarize(marker) {
return through2.obj(function (file, enc, cb) {
const summary = file.contents.toString().split(marker)[0]
file.page.summary = summary;
cb(null, file);
});
}
function fixTitle() {
const reTitle = /\s*#([ -~]+)/;
return through2.obj(function (file, enc, cb) {
if (file.page.title) {
return cb(null, file);
}
const contents = file.contents.toString();
const match = contents.match(reTitle);
if (!match) {
return cb(null, file);
}
const title = match[1].trim();
file.page.title = title;
file.contents = Buffer.from(contents.replace(reTitle, ""), "utf-8");
return cb(null, file);
});
}
const rePostName = /(\d{4})-(\d{1,2})-(\d{1,2})-(.*)/;
function filename2date() {
return through2.obj(function (file, enc, cb) {
const basename = path.basename(file.path, '.md');
const match = rePostName.exec(basename);
if (match)
{
const year = match[1];
const month = match[2];
const day = match[3];
const basename = match[4];
file.page.date = new Date(year + "-" + month + "-" + day);
file.page.url = '/' + year + '/' + month + '/' + day + '/' + basename;
}
cb(null, file);
});
}
function collectPosts() {
var posts = [];
return through2.obj(function (file, enc, cb) {
posts.push(file.page);
posts[posts.length - 1].content = file.contents.toString();
cb(null, file);
},
function (cb) {
posts.sort(function (a, b) {
return b.date - a.date;
});
site.posts = posts;
cb();
});
}
function dummy(file, title) {
var stream = through2.obj(function(file, enc, cb) {
cb(null, file);
})
if (site)
{
var file = new Vinyl({
path: file,
contents: Buffer.from('', 'utf8')
})
file.page = {title: title}
stream.write(file);
}
stream.end()
stream.emit("end")
return stream
}
function posts(basename, count) {
const stream = through2.obj(function(file, enc, cb) {
this.push(file);
cb();
});
if (site.posts)
{
let c = 0;
let page = 0;
let posts = [];
site.posts.forEach(function (post) {
posts.push(post);
c++;
if (c == count) {
const file = new Vinyl({
path: basename + (page == 0 ? '' : page) + '.html',
contents: Buffer.from('', 'utf-8')
});
file.page = {
title: 'Journal',
posts: posts,
prevPage: page != 0 ? basename + ((page-1) == 0 ? '' : page-1) + '.html' : null,
nextPage: (page+1) * count < site.posts.length ? basename + (page+1) + '.html' : null,
};
stream.write(file);
c = 0;
posts = [];
page++;
}
});
if (posts.length != 0) {
const file = new Vinyl({
path: basename + (page == 0 ? '' : page) + '.html',
contents: Buffer.from('', 'utf-8')
});
file.page = {
posts: posts,
prevPage: page != 0 ? basename + ((page-1) == 0 ? '' : page) + '.html' : null,
nextPage: null,
};
stream.write(file);
}
}
stream.end();
stream.emit("end");
return stream;
}
function cleanTask() {
return src('build', {read: false, allowEmpty: true})
.pipe(gulpClean())
}
function assetsTask() {
return src('assets/**/*')
.pipe(dest('build/'))
}
function mediaTask() {
return src('content/media/**/*')
.pipe(dest('build/media'))
}
function pagesTask() {
return src('content/pages/*.md')
.pipe(frontMatter({property: 'page', remove: true}))
.pipe(marked())
.pipe(applyTemplate('templates/page.html'))
.pipe(rename({extname: '.html'}))
.pipe(dest('build'))
}
function postsTask() {
return src('content/posts/*.md')
.pipe(frontMatter({property: 'page', remove: true}))
.pipe(fixTitle())
.pipe(marked())
.pipe(summarize('<!--more-->'))
.pipe(filename2date())
.pipe(collectPosts())
.pipe(applyTemplate('templates/post.html'))
.pipe(rename(function (path) {
path.extname = ".html";
var match = rePostName.exec(path.basename);
if (match)
{
var year = match[1];
var month = match[2];
var day = match[3];
path.dirname = year + '/' + month + '/' + day;
path.basename = match[4];
}
}))
.pipe(dest('build'))
}
function archiveTask() {
return posts('journal', 10)
.pipe(applyTemplate('templates/journal.html'))
.pipe(dest('build/'))
}
function indexTask() {
return dummy('index.html', 'Index')
.pipe(applyTemplate('templates/index.html'))
.pipe(dest('build/'))
}
const buildAll = series(parallel(assetsTask, mediaTask, pagesTask, postsTask), parallel(archiveTask, indexTask))
function watchTask() {
watch('assets/**/*', assetsTask);
watch('content/media/**/*', mediaTask);
watch('content/pages/*.md', pagesTask);
watch('content/posts/*.md', series(postsTask, parallel(archiveTask, indexTask)));
watch('templates/*.html', series(parallel(pagesTask, postsTask), parallel(archiveTask, indexTask)));
}
function server() {
liveServer.start({
root: "build",
wait: 500
});
}
exports.clean = cleanTask
exports.default = buildAll
exports.watch = series(buildAll, watchTask)
exports.server = series(buildAll, parallel(watchTask, server))