import esbuild from "esbuild"
|
import remarkParse from "remark-parse"
|
import remarkRehype from "remark-rehype"
|
import { Processor, unified } from "unified"
|
import { Root as MDRoot } from "remark-parse/lib"
|
import { Root as HTMLRoot } from "hast"
|
import { ProcessedContent } from "../plugins/vfile"
|
import { PerfTimer } from "../util/perf"
|
import { read } from "to-vfile"
|
import { FilePath, QUARTZ, slugifyFilePath } from "../util/path"
|
import path from "path"
|
import workerpool, { Promise as WorkerPromise } from "workerpool"
|
import { QuartzLogger } from "../util/log"
|
import { trace } from "../util/trace"
|
import { BuildCtx } from "../util/ctx"
|
|
export type QuartzProcessor = Processor<MDRoot, HTMLRoot, void>
|
export function createProcessor(ctx: BuildCtx): QuartzProcessor {
|
const transformers = ctx.cfg.plugins.transformers
|
|
// base Markdown -> MD AST
|
let processor = unified().use(remarkParse)
|
|
// MD AST -> MD AST transforms
|
for (const plugin of transformers.filter((p) => p.markdownPlugins)) {
|
processor = processor.use(plugin.markdownPlugins!(ctx))
|
}
|
|
// MD AST -> HTML AST
|
processor = processor.use(remarkRehype, { allowDangerousHtml: true })
|
|
// HTML AST -> HTML AST transforms
|
for (const plugin of transformers.filter((p) => p.htmlPlugins)) {
|
processor = processor.use(plugin.htmlPlugins!(ctx))
|
}
|
|
return processor
|
}
|
|
function* chunks<T>(arr: T[], n: number) {
|
for (let i = 0; i < arr.length; i += n) {
|
yield arr.slice(i, i + n)
|
}
|
}
|
|
async function transpileWorkerScript() {
|
// transpile worker script
|
const cacheFile = "./.quartz-cache/transpiled-worker.mjs"
|
const fp = "./quartz/worker.ts"
|
return esbuild.build({
|
entryPoints: [fp],
|
outfile: path.join(QUARTZ, cacheFile),
|
bundle: true,
|
keepNames: true,
|
platform: "node",
|
format: "esm",
|
packages: "external",
|
sourcemap: true,
|
sourcesContent: false,
|
plugins: [
|
{
|
name: "css-and-scripts-as-text",
|
setup(build) {
|
build.onLoad({ filter: /\.scss$/ }, (_) => ({
|
contents: "",
|
loader: "text",
|
}))
|
build.onLoad({ filter: /\.inline\.(ts|js)$/ }, (_) => ({
|
contents: "",
|
loader: "text",
|
}))
|
},
|
},
|
],
|
})
|
}
|
|
export function createFileParser(ctx: BuildCtx, fps: FilePath[]) {
|
const { argv, cfg } = ctx
|
return async (processor: QuartzProcessor) => {
|
const res: ProcessedContent[] = []
|
for (const fp of fps) {
|
try {
|
const perf = new PerfTimer()
|
const file = await read(fp)
|
|
// strip leading and trailing whitespace
|
file.value = file.value.toString().trim()
|
|
// Text -> Text transforms
|
for (const plugin of cfg.plugins.transformers.filter((p) => p.textTransform)) {
|
file.value = plugin.textTransform!(ctx, file.value)
|
}
|
|
// base data properties that plugins may use
|
file.data.slug = slugifyFilePath(path.posix.relative(argv.directory, file.path) as FilePath)
|
file.data.filePath = fp
|
|
const ast = processor.parse(file)
|
const newAst = await processor.run(ast, file)
|
res.push([newAst, file])
|
|
if (argv.verbose) {
|
console.log(`[process] ${fp} -> ${file.data.slug} (${perf.timeSince()})`)
|
}
|
} catch (err) {
|
trace(`\nFailed to process \`${fp}\``, err as Error)
|
}
|
}
|
|
return res
|
}
|
}
|
|
const clamp = (num: number, min: number, max: number) =>
|
Math.min(Math.max(Math.round(num), min), max)
|
export async function parseMarkdown(ctx: BuildCtx, fps: FilePath[]): Promise<ProcessedContent[]> {
|
const { argv } = ctx
|
const perf = new PerfTimer()
|
const log = new QuartzLogger(argv.verbose)
|
|
// rough heuristics: 128 gives enough time for v8 to JIT and optimize parsing code paths
|
const CHUNK_SIZE = 128
|
const concurrency = ctx.argv.concurrency ?? clamp(fps.length / CHUNK_SIZE, 1, 4)
|
|
let res: ProcessedContent[] = []
|
log.start(`Parsing input files using ${concurrency} threads`)
|
if (concurrency === 1) {
|
try {
|
const processor = createProcessor(ctx)
|
const parse = createFileParser(ctx, fps)
|
res = await parse(processor)
|
} catch (error) {
|
log.end()
|
throw error
|
}
|
} else {
|
await transpileWorkerScript()
|
const pool = workerpool.pool("./quartz/bootstrap-worker.mjs", {
|
minWorkers: "max",
|
maxWorkers: concurrency,
|
workerType: "thread",
|
})
|
|
const childPromises: WorkerPromise<ProcessedContent[]>[] = []
|
for (const chunk of chunks(fps, CHUNK_SIZE)) {
|
childPromises.push(pool.exec("parseFiles", [argv, chunk, ctx.allSlugs]))
|
}
|
|
const results: ProcessedContent[][] = await WorkerPromise.all(childPromises).catch((err) => {
|
const errString = err.toString().slice("Error:".length)
|
console.error(errString)
|
process.exit(1)
|
})
|
res = results.flat()
|
await pool.terminate()
|
}
|
|
log.end(`Parsed ${res.length} Markdown files in ${perf.timeSince()}`)
|
return res
|
}
|
