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index.js
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index.js
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#!/usr/bin/env node
require(`loud-rejection`)()
const pify = require(`pify`)
const pMap = require(`p-map`)
const pFilter = require(`p-filter`)
const listDir = pify(require(`list-directory-contents`))
const mri = require(`mri`)
const matcher = require(`matcher`)
const makeDir = require(`make-dir`)
const makeRenderer = require(`noddity-lazy-static-render`)
const Butler = require(`noddity-butler`)
const level = require(`level-mem`)
const { readFile, writeFile } = pify(require(`fs`))
const path = require(`path`)
const makeFsRetrieval = require(`noddity-fs-retrieval`)
const help = () => console.log(`generate-noddity [options] [pattern ...]
Options:
--root the directory to scrape for posts. Defaults to the current working directory
--template (required) the template html file content should be injected into. The file should contain '{{{html}}}'
--output (required) the directory where the html files should be created
--extension the extension to be used on the output files. Defaults to 'html'
--data path to a js/json file to be 'require'd as the data object
--filter path to a js file exposing a filter function that determines if a post should be included in the index
--feed path to a js/json file containing urlRoot, title, author, outputFileName, feedUrl
pattern patterns to match files against. Defaults to '*.md'
`)
const requireCwd = file => require(path.join(process.cwd(), file))
const cli = async(...argv) => {
const args = mri(argv, {
alias: {
patterns: `_`,
templateFile: `template`,
},
defaults: {
root: process.cwd(),
extension: `html`,
},
})
if (args.patterns.length === 0) {
args.patterns = [ `*.md` ]
}
if (!args.output || !args.template) {
help()
} else {
return generate(args)
}
}
const generate = async({
root,
output,
templateFile,
patterns,
extension,
data: dataFile,
filter: filterFile,
feed: feedSettingsFile,
}) => {
const data = dataFile ? requireCwd(dataFile) : {}
const filter = filterFile ? requireCwd(filterFile) : () => true
const [
indexHtml,
allFiles,
] = await Promise.all([
readFile(templateFile, { encoding: `utf8` }),
listDir(root),
])
await makeDir(output)
const { getPost } = makeFsRetrieval(root)
const allPaths = matcher(allFiles, patterns)
.map(file => path.relative(root, file))
const getPostPromise = pify(getPost)
const allUnfilteredPosts = await Promise.all(allPaths.map(file => getPostPromise(file)))
const indexFiles = allUnfilteredPosts.sort((postA, postB) => {
if (postA?.metadata?.date && postB?.metadata?.date) {
const a = new Date(postA.metadata.date)
const b = new Date(postB.metadata.date)
if (a < b) {
return -1
} else if (a > b) {
return 1
}
return 0
} else if (postA?.metadata?.date) {
return 1
} else if (postB?.metadata?.date) {
return -1
} else {
return postA.filename.localeCompare(postB.filename)
}
}).filter(filter).map(({ filename }) => filename)
const retrieval = {
getIndex(cb) {
process.nextTick(cb, null, indexFiles)
},
getPost,
}
const butler = new Butler(retrieval, level())
const render = makeRenderer({
butler,
indexHtml,
data,
})
if (feedSettingsFile) {
const feedSettings = requireCwd(feedSettingsFile)
const xml = await generateFeed({
indexFiles,
butler,
getPostPromise,
extension,
...feedSettings,
})
await writeFile(path.join(output, feedSettings.outputFileName), xml)
}
await pMap(allPaths, async file => {
try {
const html = await render({ file })
const { dir, name } = path.parse(path.join(output, file))
const outputPath = path.format({
dir,
name,
ext: `.` + extension,
})
await writeFile(outputPath, html)
} catch (err) {
console.error(`Error rendering`, file)
throw err
}
}, { concurrency: 4 })
}
const FEED_TEMPLATE_POST = {
name: `template`,
metadata: {
title: `RSS Template`,
markdown: false,
},
content: `{{>current}}`,
}
const generateFeed = async({
indexFiles,
title,
author,
feedUrl,
urlRoot,
butler,
getPostPromise,
extension,
}) => {
const url = require(`url`)
const Rss = require(`rss`)
const renderStatic = require(`noddity-render-static`)
const linkify = require(`noddity-linkifier`)(urlRoot)
const siteRootUrl = url.resolve(urlRoot, ``)
const rss = new Rss({
title,
feed_url: feedUrl,
site_url: siteRootUrl,
ttl: 12 * 60,
})
const postItems = await pMap(indexFiles, async file => {
const post = await getPostPromise(file)
const html = await renderStatic(FEED_TEMPLATE_POST, post, {
butler,
linkifier: linkify,
data: {},
})
const { name: bareName } = path.parse(post.filename)
return {
title: post.metadata.title || bareName,
description: html,
url: dumbResolve(urlRoot, bareName) + `.` + extension,
// Because we're using an empty guid, post URLs must be unique!
// guid: '',
author: post.metadata.author || author,
date: post.metadata.date,
}
})
postItems.forEach(postItem => rss.item(postItem))
return rss.xml()
}
function dumbResolve(firstThingy, secondThingy) {
const startsWithSlash = firstThingy[firstThingy.length - 1] === `/`
const separator = startsWithSlash ? `` : `/`
return firstThingy + separator + secondThingy
}
const [ ,, ...argv ] = process.argv
cli(...argv)