import matter from "gray-matter"
|
import remarkFrontmatter from "remark-frontmatter"
|
import { QuartzTransformerPlugin } from "../types"
|
import yaml from "js-yaml"
|
import toml from "toml"
|
import { slugTag } from "../../util/path"
|
import { QuartzPluginData } from "../vfile"
|
import { i18n } from "../../i18n"
|
|
export interface Options {
|
delimiters: string | [string, string]
|
language: "yaml" | "toml"
|
}
|
|
const defaultOptions: Options = {
|
delimiters: "---",
|
language: "yaml",
|
}
|
|
function coalesceAliases(data: { [key: string]: any }, aliases: string[]) {
|
for (const alias of aliases) {
|
if (data[alias] !== undefined && data[alias] !== null) return data[alias]
|
}
|
}
|
|
function coerceToArray(input: string | string[]): string[] | undefined {
|
if (input === undefined || input === null) return undefined
|
|
// coerce to array
|
if (!Array.isArray(input)) {
|
input = input
|
.toString()
|
.split(",")
|
.map((tag: string) => tag.trim())
|
}
|
|
// remove all non-strings
|
return input
|
.filter((tag: unknown) => typeof tag === "string" || typeof tag === "number")
|
.map((tag: string | number) => tag.toString())
|
}
|
|
export const FrontMatter: QuartzTransformerPlugin<Partial<Options> | undefined> = (userOpts) => {
|
const opts = { ...defaultOptions, ...userOpts }
|
return {
|
name: "FrontMatter",
|
markdownPlugins({ cfg }) {
|
return [
|
[remarkFrontmatter, ["yaml", "toml"]],
|
() => {
|
return (_, file) => {
|
const { data } = matter(Buffer.from(file.value), {
|
...opts,
|
engines: {
|
yaml: (s) => yaml.load(s, { schema: yaml.JSON_SCHEMA }) as object,
|
toml: (s) => toml.parse(s) as object,
|
},
|
})
|
|
if (data.title != null && data.title.toString() !== "") {
|
data.title = data.title.toString()
|
} else {
|
data.title = file.stem ?? i18n(cfg.configuration.locale).propertyDefaults.title
|
}
|
|
const tags = coerceToArray(coalesceAliases(data, ["tags", "tag"]))
|
if (tags) data.tags = [...new Set(tags.map((tag: string) => slugTag(tag)))]
|
|
const aliases = coerceToArray(coalesceAliases(data, ["aliases", "alias"]))
|
if (aliases) data.aliases = aliases
|
const cssclasses = coerceToArray(coalesceAliases(data, ["cssclasses", "cssclass"]))
|
if (cssclasses) data.cssclasses = cssclasses
|
|
// fill in frontmatter
|
file.data.frontmatter = data as QuartzPluginData["frontmatter"]
|
}
|
},
|
]
|
},
|
}
|
}
|
|
declare module "vfile" {
|
interface DataMap {
|
frontmatter: { [key: string]: unknown } & {
|
title: string
|
} & Partial<{
|
tags: string[]
|
aliases: string[]
|
description: string
|
publish: boolean
|
draft: boolean
|
enableToc: string
|
cssclasses: string[]
|
}>
|
}
|
}
|
