meblog/lib/core/post/MarkdownPostParser.js

A simple blog engine for personal blogging

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const tslib_1 = require("tslib");
const PostParser_1 = tslib_1.__importDefault(require("./PostParser"));
const Post_1 = require("./Post");
const FileUtils_1 = tslib_1.__importDefault(require("../util/FileUtils"));
const MarkdownItRenderer_1 = tslib_1.__importDefault(require("../markdown/MarkdownItRenderer"));
class MarkdownPostParser extends PostParser_1.default {
    mdRenderer;
    constructor() {
        super();
        this.mdRenderer = new MarkdownItRenderer_1.default();
    }
    parse(filePath, separator = '---') {
        const post = {};
        let content = FileUtils_1.default.readFile(filePath);
        if (!content) {
            return new Post_1.Post();
        }
        post.markdown = content;
        post.slug = this.extractSlug(filePath);
        let separatorCounter = 0;
        const metaLines = [];
        while (true) {
            const index = content.indexOf('\n');
            if (index < 0) {
                break;
            }
            const line = content.substring(0, index).trim();
            content = content.substring(index + 1);
            if (line === separator) {
                separatorCounter += 1;
                if (separatorCounter === 2) {
                    post.body = this.mdRenderer.render(content);
                    break;
                }
                else {
                    continue;
                }
            }
            if (separatorCounter <= 1) {
                metaLines.push(line);
            }
        }
        metaLines.forEach((line) => {
            const colonIndex = line.indexOf(':');
            if (colonIndex <= 0) {
                return;
            }
            const metaName = line.substring(0, colonIndex).trim();
            const metaValue = line.substring(colonIndex + 1).trim();
            post[metaName] = metaValue;
        });
        return new Post_1.Post(post);
    }
    extractSlug(filePath) {
        const fileName = FileUtils_1.default.basename(filePath, FileUtils_1.default.ext(filePath));
        return fileName.replace(/[^\w-]*/gm, '');
    }
}
exports.default = MarkdownPostParser;