98 lines
2.5 KiB
TypeScript
98 lines
2.5 KiB
TypeScript
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#!/bin/env deno run
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import { globber } from "https://deno.land/x/globber@0.1.0/mod.ts"
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interface FileIndex {
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title: string
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slug: string
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abstr: string
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date: string
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readingTimeSlow: number
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readingTimeFast: number
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}
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const cwd = './blog/'
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const outputPath = './blog/index.md'
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const fileIndex: FileIndex[] = []
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const fileIter = globber({ cwd, include: ["????-??-??*.md"] })
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const decoder = new TextDecoder('utf-8')
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const encoder = new TextEncoder()
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const header = `*Sometimes, I write long-form articles about a topic that I find interesting. I use this as a way to dive deeper into a topic, while often create an example project on the side.*
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Last updated: ${(new Date()).toISOString().slice(0,10)}
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`
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const template = `<article class="blog">
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<time datetime="%DATE%">%DATE%</time>
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<div>
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<a href="/blog/%SLUG%.html">%TITLE%</a>
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<span class="reading-time">(%READING_TIME_FAST% to %READING_TIME_SLOW% minutes)</span>
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</div>
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<p>
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%ABSTRACT%
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</p>
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</article>
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`
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function getAbstract(lines: string[]): string {
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const sep = '<!-- more -->'
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const sep2 = '<!--more-->'
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let foundSep = false
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return lines.slice(3).filter(line => {
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if (foundSep) return false
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if (line.indexOf(sep) >= 0 || line.indexOf(sep2) >= 0) {
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foundSep = true
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return false
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}
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return true
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}).join('\n').trim()
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}
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function render(fi: FileIndex) {
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return template
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.replaceAll('%DATE%', fi.date)
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.replaceAll('%TITLE%', fi.title)
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.replaceAll('%SLUG%', fi.slug)
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.replaceAll('%ABSTRACT%', fi.abstr)
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.replaceAll('%READING_TIME_FAST%', fi.readingTimeFast)
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.replaceAll('%READING_TIME_SLOW%', fi.readingTimeSlow)
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}
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for await (const file of fileIter) {
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if (file.isDirectory) {
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console.log('ignoring directory', file.relative)
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break
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}
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const path = file.absolute
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const date = file.relative.slice(0, 10)
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const slug = file.relative.slice(0, -3)
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const raw = await Deno.readFile(path)
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const text = decoder.decode(raw)
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const words = text.trim().split(/\s+/).length
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const lines = text.split('\n')
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const title = lines[0].slice(2)
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const abstr = getAbstract(lines)
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// calculates estimated reading times: [fast, slow]
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// wpm numbers from https://thereadtime.com/
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const readingTimeFast = Math.round(words / 207)
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const readingTimeSlow = Math.round(words / 167)
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fileIndex.push({ title, slug, abstr, date, readingTimeFast, readingTimeSlow })
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}
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const output = fileIndex
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.sort((a, b) => a.date.localeCompare(b.date) * -1)
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.map(render)
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.join('\n')
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Deno.writeFile(outputPath, encoder.encode(header+output))
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