quartz-research-note/quartz/processors/parse.ts
2023-05-31 17:01:23 -04:00

59 lines
1.7 KiB
TypeScript

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 '../perf'
import { read } from 'to-vfile'
import { slugify } from '../path'
import path from 'path'
import { QuartzTransformerPlugin } from '../plugins/types'
export type QuartzProcessor = Processor<MDRoot, HTMLRoot, void>
export function createProcessor(transformers: QuartzTransformerPlugin[]): any {
// base Markdown -> MD AST
let processor = unified().use(remarkParse)
// MD AST -> MD AST transforms
for (const plugin of transformers) {
processor = processor.use(plugin.markdownPlugins())
}
// MD AST -> HTML AST
processor = processor.use(remarkRehype, { allowDangerousHtml: true })
// HTML AST -> HTML AST transforms
for (const plugin of transformers) {
processor = processor.use(plugin.htmlPlugins())
}
return processor
}
export async function parseMarkdown(processor: QuartzProcessor, baseDir: string, fps: string[], verbose: boolean): Promise<ProcessedContent[]> {
const perf = new PerfTimer()
const res: ProcessedContent[] = []
for (const fp of fps) {
const file = await read(fp)
// base data properties that plugins may use
file.data.slug = slugify(path.relative(baseDir, file.path))
file.data.filePath = fp
const ast = processor.parse(file)
res.push([await processor.run(ast, file), file])
if (verbose) {
console.log(`[process] ${fp} -> ${file.data.slug}`)
}
}
if (verbose) {
console.log(`Parsed and transformed ${res.length} Markdown files in ${perf.timeSince()}`)
}
return res
}