145 lines
4.5 KiB
TypeScript
145 lines
4.5 KiB
TypeScript
/* eslint-disable @typescript-eslint/no-explicit-any */
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/* eslint-disable @typescript-eslint/no-unused-vars */
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import { parse as parseToml } from 'smol-toml';
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import { parse as parseYaml } from 'yaml';
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export interface HugoPostData {
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title: string;
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slug: string;
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content: string;
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cover: string;
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published_at: string;
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updated_at: string;
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categories: string[];
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tags: string[];
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series: string[];
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series_weight: number | null;
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}
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/**
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* 解析并转换时间，一旦解析失败或空缺，严格使用当前系统时间
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*/
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function parseOrCurrentDate(val: unknown): string {
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if (!val) return new Date().toISOString();
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try {
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const dateObj = new Date(val as string | number | Date);
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if (isNaN(dateObj.getTime())) {
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return new Date().toISOString();
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}
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return dateObj.toISOString();
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} catch (err: any) {
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return new Date().toISOString();
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}
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}
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/**
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* 清洗分类和标签列表（同时支持数组与单字符格式）
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*/
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function parseArrayField(val: unknown): string[] {
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if (Array.isArray(val)) {
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return val.map((item) => String(item).trim()).filter(Boolean);
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}
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if (typeof val === 'string' && val.trim() !== '') {
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return [val.trim()];
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}
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return [];
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}
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function parseIntegerField(val: unknown): number | null {
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if (val === null || val === undefined || val === '') return null;
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const parsed = typeof val === 'number' ? val : Number(String(val).trim());
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return Number.isInteger(parsed) ? parsed : null;
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}
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/**
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* 去掉文件名结尾的格式拓展名，提供纯文件名基础
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*/
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function stripExtension(filename: string): string {
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return filename.replace(/\.(md|markdown|txt)$/i, '').trim();
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}
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/**
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* Hugo Markdown 头部元数据及正文解析器
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* 同时原生兼容 TOML (+++) 与 YAML (---) 语法，自动过滤并丢弃本项目无端对应参数
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*/
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export function parseHugoMarkdown(rawContent: string, fileName = ''): HugoPostData {
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// 剔除可能存在的 UTF-8 BOM
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const text = rawContent.replace(/^\uFEFF/, '').trim();
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const defaultName = fileName ? stripExtension(fileName) : '新文章';
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let meta: Record<string, unknown> = {};
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let bodyContent = text;
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try {
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// 1. 优先检识 TOML (以 +++ 开头包络)
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if (text.startsWith('+++')) {
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const endIndex = text.indexOf('\n+++', 3);
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if (endIndex !== -1) {
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const frontmatter = text.substring(3, endIndex).trim();
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bodyContent = text.substring(endIndex + 4).trim();
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meta = parseToml(frontmatter) as Record<string, any>;
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}
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}
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// 2. 检识常规 YAML (以 --- 开头包络)
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else if (text.startsWith('---')) {
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const endIndex = text.indexOf('\n---', 3);
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if (endIndex !== -1) {
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const frontmatter = text.substring(3, endIndex).trim();
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bodyContent = text.substring(endIndex + 4).trim();
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meta = parseYaml(frontmatter) as Record<string, any>;
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}
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}
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} catch (err: any) {
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console.error(
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'解析 Markdown 头部参数时出现异常，直接回货底稿正文并对时差退回初始系统时刻:',
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err
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);
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// 当解析受卡出错，空字典依然不阻挠对下方日期与稿费正文字面的顺利捕拾
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}
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// 取值并完成映射：除以下对应参数处，诸如 draft/twemoji/lightgallery 等全在空载转储里随水蒸丢！
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const title =
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typeof meta.title === 'string' && meta.title.trim() !== '' ? meta.title.trim() : defaultName;
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let slug = typeof meta.slug === 'string' ? meta.slug.trim() : '';
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if (!slug) {
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// 没有声明明确的 slug 时，由名目精简转化出基础链接字符串
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slug = defaultName
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.toLowerCase()
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.replace(/[^\w\u4e00-\u9fa5\s-]/g, '')
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.replace(/\s+/g, '-');
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if (!slug) {
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slug = 'post-' + Date.now();
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}
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}
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// 特色图片字段识别（首挑 featuredImage，也兼备处理 cover/image）
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const cover =
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typeof meta.featuredImage === 'string'
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? meta.featuredImage.trim()
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: typeof meta.cover === 'string'
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? meta.cover.trim()
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: typeof meta.image === 'string'
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? meta.image.trim()
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: '';
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// 时间字段转化：严格按需求约定“一旦转换错漏或是全无，采用目前时刻填满”
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const published_at = parseOrCurrentDate(meta.date || meta.published_at);
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const updated_at = parseOrCurrentDate(
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meta.lastmod || meta.updated_at || meta.date || meta.published_at
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);
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return {
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title: title || '无名小贴',
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slug,
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content: bodyContent,
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cover,
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published_at,
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updated_at,
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categories: parseArrayField(meta.categories || meta.category),
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tags: parseArrayField(meta.tags || meta.tag),
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series: parseArrayField(meta.series),
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series_weight: parseIntegerField(meta.series_weight)
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};
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}
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