refactor: share markdown renderer via baoyu-md

2026-07-13 22:29:48 +08:00 · 2026-03-13 10:20:28 -05:00
parent c62cda4424
commit 056fa06c3b
427 changed files with 10831 additions and 3816 deletions
@@ -0,0 +1,206 @@
+{
+  "lockfileVersion": 1,
+  "workspaces": {
+    "": {
+      "name": "baoyu-markdown-to-html-scripts",
+      "dependencies": {
+        "baoyu-md": "file:./vendor/baoyu-md",
+      },
+    },
+  },
+  "packages": {
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+    "bail": ["bail@2.0.2", "", {}, "sha512-0xO6mYd7JB2YesxDKplafRpsiOzPt9V02ddPCLbY1xYGPOX24NTyN50qnUxgCPcSoYMhKpAuBTjQoRZCAkUDRw=="],
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+    "micromark-util-decode-numeric-character-reference": ["micromark-util-decode-numeric-character-reference@2.0.2", "", { "dependencies": { "micromark-util-symbol": "^2.0.0" } }, "sha512-ccUbYk6CwVdkmCQMyr64dXz42EfHGkPQlBj5p7YVGzq8I7CtjXZJrubAYezf7Rp+bjPseiROqe7G6foFd+lEuw=="],
+
+    "micromark-util-decode-string": ["micromark-util-decode-string@2.0.1", "", { "dependencies": { "decode-named-character-reference": "^1.0.0", "micromark-util-character": "^2.0.0", "micromark-util-decode-numeric-character-reference": "^2.0.0", "micromark-util-symbol": "^2.0.0" } }, "sha512-nDV/77Fj6eH1ynwscYTOsbK7rR//Uj0bZXBwJZRfaLEJ1iGBR6kIfNmlNqaqJf649EP0F3NWNdeJi03elllNUQ=="],
+
+    "micromark-util-encode": ["micromark-util-encode@2.0.1", "", {}, "sha512-c3cVx2y4KqUnwopcO9b/SCdo2O67LwJJ/UyqGfbigahfegL9myoEFoDYZgkT7f36T0bLrM9hZTAaAyH+PCAXjw=="],
+
+    "micromark-util-html-tag-name": ["micromark-util-html-tag-name@2.0.1", "", {}, "sha512-2cNEiYDhCWKI+Gs9T0Tiysk136SnR13hhO8yW6BGNyhOC4qYFnwF1nKfD3HFAIXA5c45RrIG1ub11GiXeYd1xA=="],
+
+    "micromark-util-normalize-identifier": ["micromark-util-normalize-identifier@2.0.1", "", { "dependencies": { "micromark-util-symbol": "^2.0.0" } }, "sha512-sxPqmo70LyARJs0w2UclACPUUEqltCkJ6PhKdMIDuJ3gSf/Q+/GIe3WKl0Ijb/GyH9lOpUkRAO2wp0GVkLvS9Q=="],
+
+    "micromark-util-resolve-all": ["micromark-util-resolve-all@2.0.1", "", { "dependencies": { "micromark-util-types": "^2.0.0" } }, "sha512-VdQyxFWFT2/FGJgwQnJYbe1jjQoNTS4RjglmSjTUlpUMa95Htx9NHeYW4rGDJzbjvCsl9eLjMQwGeElsqmzcHg=="],
+
+    "micromark-util-sanitize-uri": ["micromark-util-sanitize-uri@2.0.1", "", { "dependencies": { "micromark-util-character": "^2.0.0", "micromark-util-encode": "^2.0.0", "micromark-util-symbol": "^2.0.0" } }, "sha512-9N9IomZ/YuGGZZmQec1MbgxtlgougxTodVwDzzEouPKo3qFWvymFHWcnDi2vzV1ff6kas9ucW+o3yzJK9YB1AQ=="],
+
+    "micromark-util-subtokenize": ["micromark-util-subtokenize@2.1.0", "", { "dependencies": { "devlop": "^1.0.0", "micromark-util-chunked": "^2.0.0", "micromark-util-symbol": "^2.0.0", "micromark-util-types": "^2.0.0" } }, "sha512-XQLu552iSctvnEcgXw6+Sx75GflAPNED1qx7eBJ+wydBb2KCbRZe+NwvIEEMM83uml1+2WSXpBAcp9IUCgCYWA=="],
+
+    "micromark-util-symbol": ["micromark-util-symbol@2.0.1", "", {}, "sha512-vs5t8Apaud9N28kgCrRUdEed4UJ+wWNvicHLPxCa9ENlYuAY31M0ETy5y1vA33YoNPDFTghEbnh6efaE8h4x0Q=="],
+
+    "micromark-util-types": ["micromark-util-types@2.0.2", "", {}, "sha512-Yw0ECSpJoViF1qTU4DC6NwtC4aWGt1EkzaQB8KPPyCRR8z9TWeV0HbEFGTO+ZY1wB22zmxnJqhPyTpOVCpeHTA=="],
+
+    "mime": ["mime@2.6.0", "", { "bin": { "mime": "cli.js" } }, "sha512-USPkMeET31rOMiarsBNIHZKLGgvKc/LrjofAnBlOttf5ajRvqiRA8QsenbcooctK6d6Ts6aqZXBA+XbkKthiQg=="],
+
+    "ms": ["ms@2.1.3", "", {}, "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="],
+
+    "nth-check": ["nth-check@2.1.1", "", { "dependencies": { "boolbase": "^1.0.0" } }, "sha512-lqjrjmaOoAnWfMmBPL+XNnynZh2+swxiX3WUE0s4yEHI6m+AwrK2UZOimIRl3X/4QctVqS8AiZjFqyOGrMXb/w=="],
+
+    "parse5": ["parse5@7.3.0", "", { "dependencies": { "entities": "^6.0.0" } }, "sha512-IInvU7fabl34qmi9gY8XOVxhYyMyuH2xUNpb2q8/Y+7552KlejkRvqvD19nMoUW/uQGGbqNpA6Tufu5FL5BZgw=="],
+
+    "parse5-htmlparser2-tree-adapter": ["parse5-htmlparser2-tree-adapter@7.1.0", "", { "dependencies": { "domhandler": "^5.0.3", "parse5": "^7.0.0" } }, "sha512-ruw5xyKs6lrpo9x9rCZqZZnIUntICjQAd0Wsmp396Ul9lN/h+ifgVV1x1gZHi8euej6wTfpqX8j+BFQxF0NS/g=="],
+
+    "parse5-parser-stream": ["parse5-parser-stream@7.1.2", "", { "dependencies": { "parse5": "^7.0.0" } }, "sha512-JyeQc9iwFLn5TbvvqACIF/VXG6abODeB3Fwmv/TGdLk2LfbWkaySGY72at4+Ty7EkPZj854u4CrICqNk2qIbow=="],
+
+    "reading-time": ["reading-time@1.5.0", "", {}, "sha512-onYyVhBNr4CmAxFsKS7bz+uTLRakypIe4R+5A824vBSkQy/hB3fZepoVEf8OVAxzLvK+H/jm9TzpI3ETSm64Kg=="],
+
+    "remark-cjk-friendly": ["remark-cjk-friendly@1.2.3", "", { "dependencies": { "micromark-extension-cjk-friendly": "1.2.3" }, "peerDependencies": { "@types/mdast": "^4.0.0", "unified": "^11.0.0" }, "optionalPeers": ["@types/mdast"] }, "sha512-UvAgxwlNk+l9Oqgl/9MWK2eWRS7zgBW/nXX9AthV7nd/3lNejF138E7Xbmk9Zs4WjTJGs721r7fAEc7tNFoH7g=="],
+
+    "remark-parse": ["remark-parse@11.0.0", "", { "dependencies": { "@types/mdast": "^4.0.0", "mdast-util-from-markdown": "^2.0.0", "micromark-util-types": "^2.0.0", "unified": "^11.0.0" } }, "sha512-FCxlKLNGknS5ba/1lmpYijMUzX2esxW5xQqjWxw2eHFfS2MSdaHVINFmhjo+qN1WhZhNimq0dZATN9pH0IDrpA=="],
+
+    "remark-stringify": ["remark-stringify@11.0.0", "", { "dependencies": { "@types/mdast": "^4.0.0", "mdast-util-to-markdown": "^2.0.0", "unified": "^11.0.0" } }, "sha512-1OSmLd3awB/t8qdoEOMazZkNsfVTeY4fTsgzcQFdXNq8ToTN4ZGwrMnlda4K6smTFKD+GRV6O48i6Z4iKgPPpw=="],
+
+    "safer-buffer": ["safer-buffer@2.1.2", "", {}, "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="],
+
+    "slick": ["slick@1.12.2", "", {}, "sha512-4qdtOGcBjral6YIBCWJ0ljFSKNLz9KkhbWtuGvUyRowl1kxfuE1x/Z/aJcaiilpb3do9bl5K7/1h9XC5wWpY/A=="],
+
+    "sprintf-js": ["sprintf-js@1.0.3", "", {}, "sha512-D9cPgkvLlV3t3IzL0D0YLvGA9Ahk4PcvVwUbN0dSGr1aP0Nrt4AEnTUbuGvquEC0mA64Gqt1fzirlRs5ibXx8g=="],
+
+    "trough": ["trough@2.2.0", "", {}, "sha512-tmMpK00BjZiUyVyvrBK7knerNgmgvcV/KLVyuma/SC+TQN167GrMRciANTz09+k3zW8L8t60jWO1GpfkZdjTaw=="],
+
+    "undici": ["undici@6.24.0", "", {}, "sha512-lVLNosgqo5EkGqh5XUDhGfsMSoO8K0BAN0TyJLvwNRSl4xWGZlCVYsAIpa/OpA3TvmnM01GWcoKmc3ZWo5wKKA=="],
+
+    "unified": ["unified@11.0.5", "", { "dependencies": { "@types/unist": "^3.0.0", "bail": "^2.0.0", "devlop": "^1.0.0", "extend": "^3.0.0", "is-plain-obj": "^4.0.0", "trough": "^2.0.0", "vfile": "^6.0.0" } }, "sha512-xKvGhPWw3k84Qjh8bI3ZeJjqnyadK+GEFtazSfZv/rKeTkTjOJho6mFqh2SM96iIcZokxiOpg78GazTSg8+KHA=="],
+
+    "unist-util-is": ["unist-util-is@6.0.1", "", { "dependencies": { "@types/unist": "^3.0.0" } }, "sha512-LsiILbtBETkDz8I9p1dQ0uyRUWuaQzd/cuEeS1hoRSyW5E5XGmTzlwY1OrNzzakGowI9Dr/I8HVaw4hTtnxy8g=="],
+
+    "unist-util-stringify-position": ["unist-util-stringify-position@4.0.0", "", { "dependencies": { "@types/unist": "^3.0.0" } }, "sha512-0ASV06AAoKCDkS2+xw5RXJywruurpbC4JZSm7nr7MOt1ojAzvyyaO+UxZf18j8FCF6kmzCZKcAgN/yu2gm2XgQ=="],
+
+    "unist-util-visit": ["unist-util-visit@5.1.0", "", { "dependencies": { "@types/unist": "^3.0.0", "unist-util-is": "^6.0.0", "unist-util-visit-parents": "^6.0.0" } }, "sha512-m+vIdyeCOpdr/QeQCu2EzxX/ohgS8KbnPDgFni4dQsfSCtpz8UqDyY5GjRru8PDKuYn7Fq19j1CQ+nJSsGKOzg=="],
+
+    "unist-util-visit-parents": ["unist-util-visit-parents@6.0.2", "", { "dependencies": { "@types/unist": "^3.0.0", "unist-util-is": "^6.0.0" } }, "sha512-goh1s1TBrqSqukSc8wrjwWhL0hiJxgA8m4kFxGlQ+8FYQ3C/m11FcTs4YYem7V664AhHVvgoQLk890Ssdsr2IQ=="],
+
+    "valid-data-url": ["valid-data-url@3.0.1", "", {}, "sha512-jOWVmzVceKlVVdwjNSenT4PbGghU0SBIizAev8ofZVgivk/TVHXSbNL8LP6M3spZvkR9/QolkyJavGSX5Cs0UA=="],
+
+    "vfile": ["vfile@6.0.3", "", { "dependencies": { "@types/unist": "^3.0.0", "vfile-message": "^4.0.0" } }, "sha512-KzIbH/9tXat2u30jf+smMwFCsno4wHVdNmzFyL+T/L3UGqqk6JKfVqOFOZEpZSHADH1k40ab6NUIXZq422ov3Q=="],
+
+    "vfile-message": ["vfile-message@4.0.3", "", { "dependencies": { "@types/unist": "^3.0.0", "unist-util-stringify-position": "^4.0.0" } }, "sha512-QTHzsGd1EhbZs4AsQ20JX1rC3cOlt/IWJruk893DfLRr57lcnOeMaWG4K0JrRta4mIJZKth2Au3mM3u03/JWKw=="],
+
+    "web-resource-inliner": ["web-resource-inliner@8.0.0", "", { "dependencies": { "ansi-colors": "^4.1.1", "escape-goat": "^3.0.0", "htmlparser2": "^9.1.0", "mime": "^2.4.6", "valid-data-url": "^3.0.0" } }, "sha512-Ezr98sqXW/+OCGoUEXuOKVR+oVFlSdn1tIySEEJdiSAw4IjrW8hQkwARSSBJTSB5Us5dnytDgL0ZDliAYBhaNA=="],
+
+    "whatwg-encoding": ["whatwg-encoding@3.1.1", "", { "dependencies": { "iconv-lite": "0.6.3" } }, "sha512-6qN4hJdMwfYBtE3YBTTHhoeuUrDBPZmbQaxWAqSALV/MeEnR5z1xd8UKud2RAkFoPkmB+hli1TZSnyi84xz1vQ=="],
+
+    "whatwg-mimetype": ["whatwg-mimetype@4.0.0", "", {}, "sha512-QaKxh0eNIi2mE9p2vEdzfagOKHCcj1pJ56EEHGQOVxp8r9/iszLUUV7v89x9O1p/T+NlTM5W7jW6+cz4Fq1YVg=="],
+
+    "zwitch": ["zwitch@2.0.4", "", {}, "sha512-bXE4cR/kVZhKZX/RjPEflHaKVhUVl85noU3v6b8apfQEc1x4A+zBxjZ4lN8LqGd6WZ3dl98pY4o717VFmoPp+A=="],
+
+    "dom-serializer/entities": ["entities@4.5.0", "", {}, "sha512-V0hjH4dGPh9Ao5p0MoRY6BVqtwCjhz6vI5LT8AJ55H+4g9/4vbHx1I54fS0XuclLhDHArPQCiMjDxjaL8fPxhw=="],
+
+    "htmlparser2/entities": ["entities@4.5.0", "", {}, "sha512-V0hjH4dGPh9Ao5p0MoRY6BVqtwCjhz6vI5LT8AJ55H+4g9/4vbHx1I54fS0XuclLhDHArPQCiMjDxjaL8fPxhw=="],
+
+    "parse5/entities": ["entities@6.0.1", "", {}, "sha512-aN97NXWF6AWBTahfVOIrB/NShkzi5H7F9r1s9mD3cDj4Ko5f2qhhVoYMibXF7GlLveb/D2ioWay8lxI97Ven3g=="],
+  }
+}
@@ -1,17 +1,19 @@
-import fs from 'node:fs';
-import path from 'node:path';
-import { createHash } from 'node:crypto';
-import https from 'node:https';
-import http from 'node:http';
-import process from 'node:process';
-import type { StyleConfig, HtmlDocumentMeta } from './md/types.js';
-import { DEFAULT_STYLE, THEME_STYLE_DEFAULTS } from './md/constants.js';
-import { loadThemeCss, normalizeThemeCss } from './md/themes.js';
-import { initRenderer, renderMarkdown, postProcessHtml } from './md/renderer.js';
+import fs from "node:fs";
+import os from "node:os";
+import path from "node:path";
+import process from "node:process";
+
 import {
-  buildCss, loadCodeThemeCss, buildHtmlDocument,
-  inlineCss, normalizeInlineCss, modifyHtmlStructure, removeFirstHeading,
-} from './md/html-builder.js';
+  extractSummaryFromBody,
+  extractTitleFromMarkdown,
+  formatTimestamp,
+  parseFrontmatter,
+  renderMarkdownDocument,
+  replaceMarkdownImagesWithPlaceholders,
+  resolveContentImages,
+  serializeFrontmatter,
+  stripWrappingQuotes,
+} from "baoyu-md";

 interface ImageInfo {
  placeholder: string;
@@ -28,192 +30,50 @@ interface ParsedResult {
  contentImages: ImageInfo[];
 }

-function formatTimestamp(date = new Date()): string {
-  const pad = (v: number) => String(v).padStart(2, '0');
-  return `${date.getFullYear()}${pad(date.getMonth() + 1)}${pad(date.getDate())}${pad(date.getHours())}${pad(date.getMinutes())}${pad(date.getSeconds())}`;
-}
-
-function downloadFile(url: string, destPath: string): Promise<void> {
-  return new Promise((resolve, reject) => {
-    const protocol = url.startsWith('https') ? https : http;
-    const file = fs.createWriteStream(destPath);
-
-    const request = protocol.get(url, { headers: { 'User-Agent': 'Mozilla/5.0' } }, (response) => {
-      if (response.statusCode === 301 || response.statusCode === 302) {
-        const redirectUrl = response.headers.location;
-        if (redirectUrl) {
-          file.close();
-          fs.unlinkSync(destPath);
-          downloadFile(redirectUrl, destPath).then(resolve).catch(reject);
-          return;
-        }
-      }
-
-      if (response.statusCode !== 200) {
-        file.close();
-        fs.unlinkSync(destPath);
-        reject(new Error(`Failed to download: ${response.statusCode}`));
-        return;
-      }
-
-      response.pipe(file);
-      file.on('finish', () => {
-        file.close();
-        resolve();
-      });
-    });
-
-    request.on('error', (err) => {
-      file.close();
-      fs.unlink(destPath, () => {});
-      reject(err);
-    });
-
-    request.setTimeout(30000, () => {
-      request.destroy();
-      reject(new Error('Download timeout'));
-    });
-  });
-}
-
-function getImageExtension(urlOrPath: string): string {
-  const match = urlOrPath.match(/\.(jpg|jpeg|png|gif|webp)(\?|$)/i);
-  return match ? match[1]!.toLowerCase() : 'png';
-}
-
-async function resolveImagePath(imagePath: string, baseDir: string, tempDir: string): Promise<string> {
-  if (imagePath.startsWith('http://') || imagePath.startsWith('https://')) {
-    const hash = createHash('md5').update(imagePath).digest('hex').slice(0, 8);
-    const ext = getImageExtension(imagePath);
-    const localPath = path.join(tempDir, `remote_${hash}.${ext}`);
-
-    if (!fs.existsSync(localPath)) {
-      console.error(`[markdown-to-html] Downloading: ${imagePath}`);
-      await downloadFile(imagePath, localPath);
-    }
-    return localPath;
-  }
-
-  if (path.isAbsolute(imagePath)) {
-    return imagePath;
-  }
-
-  return path.resolve(baseDir, imagePath);
-}
-
-function parseFrontmatter(content: string): { frontmatter: Record<string, string>; body: string } {
-  const match = content.match(/^---\r?\n([\s\S]*?)\r?\n---\r?\n([\s\S]*)$/);
-  if (!match) return { frontmatter: {}, body: content };
-
-  const frontmatter: Record<string, string> = {};
-  const lines = match[1]!.split('\n');
-  for (const line of lines) {
-    const colonIdx = line.indexOf(':');
-    if (colonIdx > 0) {
-      const key = line.slice(0, colonIdx).trim();
-      let value = line.slice(colonIdx + 1).trim();
-      if ((value.startsWith('"') && value.endsWith('"')) || (value.startsWith("'") && value.endsWith("'"))) {
-        value = value.slice(1, -1);
-      }
-      frontmatter[key] = value;
-    }
-  }
-
-  return { frontmatter, body: match[2]! };
-}
-
 export async function convertMarkdown(
  markdownPath: string,
-  options?: { title?: string; theme?: string; keepTitle?: boolean; citeStatus?: boolean }
+  options?: { title?: string; theme?: string; keepTitle?: boolean; citeStatus?: boolean },
 ): Promise<ParsedResult> {
  const baseDir = path.dirname(markdownPath);
-  const content = fs.readFileSync(markdownPath, 'utf-8');
-  const theme = options?.theme ?? 'default';
+  const content = fs.readFileSync(markdownPath, "utf-8");
+  const theme = options?.theme;
  const keepTitle = options?.keepTitle ?? false;
  const citeStatus = options?.citeStatus ?? false;

  const { frontmatter, body } = parseFrontmatter(content);

-  const stripQuotes = (s?: string): string => {
-    if (!s) return '';
-    if ((s.startsWith('"') && s.endsWith('"')) || (s.startsWith("'") && s.endsWith("'"))) {
-      return s.slice(1, -1);
-    }
-    if ((s.startsWith('\u201c') && s.endsWith('\u201d')) || (s.startsWith('\u2018') && s.endsWith('\u2019'))) {
-      return s.slice(1, -1);
-    }
-    return s;
-  };
-
-  let title = options?.title ?? stripQuotes(frontmatter.title) ?? '';
+  let title = stripWrappingQuotes(options?.title ?? "")
+    || stripWrappingQuotes(frontmatter.title ?? "")
+    || extractTitleFromMarkdown(body);
  if (!title) {
-    const lines = body.split('\n');
-    for (const line of lines) {
-      const trimmed = line.trim();
-      if (!trimmed) continue;
-      const headingMatch = trimmed.match(/^#{1,2}\s+(.+)$/);
-      if (headingMatch) title = headingMatch[1]!;
-      break;
-    }
+    title = path.basename(markdownPath, path.extname(markdownPath));
  }
-  if (!title) title = path.basename(markdownPath, path.extname(markdownPath));
-  const author = stripQuotes(frontmatter.author);
-  let summary = stripQuotes(frontmatter.description) || stripQuotes(frontmatter.summary);

+  const author = stripWrappingQuotes(frontmatter.author ?? "");
+  let summary = stripWrappingQuotes(frontmatter.description ?? "")
+    || stripWrappingQuotes(frontmatter.summary ?? "");
  if (!summary) {
-    const lines = body.split('\n');
-    for (const line of lines) {
-      const trimmed = line.trim();
-      if (!trimmed) continue;
-      if (trimmed.startsWith('#')) continue;
-      if (trimmed.startsWith('![')) continue;
-      if (trimmed.startsWith('>')) continue;
-      if (trimmed.startsWith('-') || trimmed.startsWith('*')) continue;
-      if (/^\d+\./.test(trimmed)) continue;
-
-      const cleanText = trimmed
-        .replace(/\*\*(.+?)\*\*/g, '$1')
-        .replace(/\*(.+?)\*/g, '$1')
-        .replace(/\[([^\]]+)\]\([^)]+\)/g, '$1')
-        .replace(/`([^`]+)`/g, '$1');
-
-      if (cleanText.length > 20) {
-        summary = cleanText.length > 120 ? cleanText.slice(0, 117) + '...' : cleanText;
-        break;
-      }
-    }
+    summary = extractSummaryFromBody(body, 120);
  }

-  const images: Array<{ src: string; placeholder: string }> = [];
-  let imageCounter = 0;
+  const { images, markdown: rewrittenBody } = replaceMarkdownImagesWithPlaceholders(
+    body,
+    "MDTOHTMLIMGPH_",
+  );
+  const rewrittenMarkdown = `${serializeFrontmatter(frontmatter)}${rewrittenBody}`;

-  const modifiedBody = body.replace(/!\[([^\]]*)\]\(([^)]+)\)/g, (match, alt, src) => {
-    const placeholder = `MDTOHTMLIMGPH_${++imageCounter}`;
-    images.push({ src, placeholder });
-    return placeholder;
+  console.error(
+    `[markdown-to-html] Rendering with theme: ${theme ?? "default"}, keepTitle: ${keepTitle}, citeStatus: ${citeStatus}`,
+  );
+
+  const { html } = await renderMarkdownDocument(rewrittenMarkdown, {
+    citeStatus,
+    defaultTitle: title,
+    keepTitle,
+    theme,
  });

-  const modifiedMarkdown = `---\n${Object.entries(frontmatter).map(([k, v]) => `${k}: ${v}`).join('\n')}\n---\n${modifiedBody}`;
-
-  console.error(`[markdown-to-html] Rendering with theme: ${theme}, keepTitle: ${keepTitle}, citeStatus: ${citeStatus}`);
-
-  const themeDefaults = THEME_STYLE_DEFAULTS[theme] ?? {};
-  const style: StyleConfig = { ...DEFAULT_STYLE, ...themeDefaults };
-  const { baseCss, themeCss } = loadThemeCss(theme);
-  const css = normalizeThemeCss(buildCss(baseCss, themeCss, style));
-  const codeThemeCss = loadCodeThemeCss('github');
-
-  const renderer = initRenderer({ citeStatus });
-  const { html: baseHtml, readingTime } = renderMarkdown(modifiedMarkdown, renderer);
-  let htmlContent = postProcessHtml(baseHtml, readingTime, renderer);
-  if (!keepTitle) htmlContent = removeFirstHeading(htmlContent);
-
-  const meta: HtmlDocumentMeta = { title, author, description: summary };
-  const fullHtml = buildHtmlDocument(meta, css, htmlContent, codeThemeCss);
-  const inlinedHtml = normalizeInlineCss(await inlineCss(fullHtml), style);
-  const renderedHtml = modifyHtmlStructure(inlinedHtml);
-
-  const finalHtmlPath = markdownPath.replace(/\.md$/i, '.html');
+  const finalHtmlPath = markdownPath.replace(/\.md$/i, ".html");
  let backupPath: string | undefined;

  if (fs.existsSync(finalHtmlPath)) {
@@ -222,29 +82,22 @@ export async function convertMarkdown(
    fs.renameSync(finalHtmlPath, backupPath);
  }

-  fs.writeFileSync(finalHtmlPath, renderedHtml, 'utf-8');
+  fs.writeFileSync(finalHtmlPath, html, "utf-8");

-  const contentImages: ImageInfo[] = [];
-  let tempDir: string | undefined;
-  for (const img of images) {
-    if (!tempDir && (img.src.startsWith('http://') || img.src.startsWith('https://'))) {
-      const os = await import('node:os');
-      tempDir = fs.mkdtempSync(path.join(os.default.tmpdir(), 'markdown-to-html-'));
-    }
-    const localPath = await resolveImagePath(img.src, baseDir, tempDir ?? baseDir);
-    contentImages.push({
-      placeholder: img.placeholder,
-      localPath,
-      originalPath: img.src,
-    });
-  }
+  const hasRemoteImages = images.some((image) =>
+    image.originalPath.startsWith("http://") || image.originalPath.startsWith("https://"),
+  );
+  const tempDir = hasRemoteImages
+    ? fs.mkdtempSync(path.join(os.tmpdir(), "markdown-to-html-"))
+    : baseDir;
+  const contentImages = await resolveContentImages(images, baseDir, tempDir, "markdown-to-html");

-  let finalContent = fs.readFileSync(finalHtmlPath, 'utf-8');
-  for (const img of contentImages) {
-    const imgTag = `<img src="${img.originalPath}" data-local-path="${img.localPath}" style="display: block; width: 100%; margin: 1.5em auto;">`;
-    finalContent = finalContent.replace(img.placeholder, imgTag);
+  let finalContent = fs.readFileSync(finalHtmlPath, "utf-8");
+  for (const image of contentImages) {
+    const imgTag = `<img src="${image.originalPath}" data-local-path="${image.localPath}" style="display: block; width: 100%; margin: 1.5em auto;">`;
+    finalContent = finalContent.replace(image.placeholder, imgTag);
  }
-  fs.writeFileSync(finalHtmlPath, finalContent, 'utf-8');
+  fs.writeFileSync(finalHtmlPath, finalContent, "utf-8");

  console.error(`[markdown-to-html] HTML saved to: ${finalHtmlPath}`);

@@ -296,7 +149,7 @@ Example:

 async function main(): Promise<void> {
  const args = process.argv.slice(2);
-  if (args.length === 0 || args.includes('--help') || args.includes('-h')) {
+  if (args.length === 0 || args.includes("--help") || args.includes("-h")) {
    printUsage();
  }

@@ -308,21 +161,21 @@ async function main(): Promise<void> {

  for (let i = 0; i < args.length; i++) {
    const arg = args[i]!;
-    if (arg === '--title' && args[i + 1]) {
+    if (arg === "--title" && args[i + 1]) {
      title = args[++i];
-    } else if (arg === '--theme' && args[i + 1]) {
+    } else if (arg === "--theme" && args[i + 1]) {
      theme = args[++i];
-    } else if (arg === '--cite') {
+    } else if (arg === "--cite") {
      citeStatus = true;
-    } else if (arg === '--keep-title') {
+    } else if (arg === "--keep-title") {
      keepTitle = true;
-    } else if (!arg.startsWith('-')) {
+    } else if (!arg.startsWith("-")) {
      markdownPath = arg;
    }
  }

  if (!markdownPath) {
-    console.error('Error: Markdown file path is required');
+    console.error("Error: Markdown file path is required");
    process.exit(1);
  }

@@ -335,7 +188,7 @@ async function main(): Promise<void> {
  console.log(JSON.stringify(result, null, 2));
 }

-await main().catch((err) => {
-  console.error(`Error: ${err instanceof Error ? err.message : String(err)}`);
+await main().catch((error) => {
+  console.error(`Error: ${error instanceof Error ? error.message : String(error)}`);
  process.exit(1);
 });
@@ -1,119 +0,0 @@
-#!/usr/bin/env npx tsx
-
-import fs from "node:fs";
-import path from "node:path";
-import type { StyleConfig, HtmlDocumentMeta } from "./types.js";
-import { DEFAULT_STYLE, THEME_STYLE_DEFAULTS } from "./constants.js";
-import { loadThemeCss, normalizeThemeCss } from "./themes.js";
-import { parseArgs, printUsage } from "./cli.js";
-import { initRenderer, renderMarkdown, postProcessHtml } from "./renderer.js";
-import {
-  buildCss,
-  loadCodeThemeCss,
-  buildHtmlDocument,
-  inlineCss,
-  normalizeInlineCss,
-  modifyHtmlStructure,
-  removeFirstHeading,
-} from "./html-builder.js";
-
-function formatTimestamp(date = new Date()): string {
-  const pad = (value: number) => String(value).padStart(2, "0");
-  return `${date.getFullYear()}${pad(date.getMonth() + 1)}${pad(
-    date.getDate()
-  )}${pad(date.getHours())}${pad(date.getMinutes())}${pad(date.getSeconds())}`;
-}
-
-async function main(): Promise<void> {
-  const options = parseArgs(process.argv.slice(2));
-  if (!options) {
-    printUsage();
-    process.exit(1);
-  }
-
-  const inputPath = path.resolve(process.cwd(), options.inputPath);
-  if (!inputPath.toLowerCase().endsWith(".md")) {
-    console.error("Input file must end with .md");
-    process.exit(1);
-  }
-
-  if (!fs.existsSync(inputPath)) {
-    console.error(`File not found: ${inputPath}`);
-    process.exit(1);
-  }
-
-  const outputPath = path.resolve(
-    process.cwd(),
-    options.inputPath.replace(/\.md$/i, ".html")
-  );
-
-  const themeDefaults = THEME_STYLE_DEFAULTS[options.theme] ?? {};
-  const style: StyleConfig = {
-    ...DEFAULT_STYLE,
-    ...themeDefaults,
-    ...(options.primaryColor !== undefined ? { primaryColor: options.primaryColor } : {}),
-    ...(options.fontFamily !== undefined ? { fontFamily: options.fontFamily } : {}),
-    ...(options.fontSize !== undefined ? { fontSize: options.fontSize } : {}),
-  };
-
-  const { baseCss, themeCss } = loadThemeCss(options.theme);
-  const css = normalizeThemeCss(buildCss(baseCss, themeCss, style));
-  const codeThemeCss = loadCodeThemeCss(options.codeTheme);
-
-  const markdown = fs.readFileSync(inputPath, "utf-8");
-
-  const renderer = initRenderer({
-    legend: options.legend,
-    citeStatus: options.citeStatus,
-    countStatus: options.countStatus,
-    isMacCodeBlock: options.isMacCodeBlock,
-    isShowLineNumber: options.isShowLineNumber,
-  });
-  const { yamlData } = renderer.parseFrontMatterAndContent(markdown);
-  const { html: baseHtml, readingTime: readingTimeResult } = renderMarkdown(
-    markdown,
-    renderer
-  );
-  let content = postProcessHtml(baseHtml, readingTimeResult, renderer);
-  if (!options.keepTitle) {
-    content = removeFirstHeading(content);
-  }
-
-  const stripQuotes = (s?: string): string | undefined => {
-    if (!s) return s;
-    if ((s.startsWith('"') && s.endsWith('"')) || (s.startsWith("'") && s.endsWith("'"))) {
-      return s.slice(1, -1);
-    }
-    if ((s.startsWith('\u201c') && s.endsWith('\u201d')) || (s.startsWith('\u2018') && s.endsWith('\u2019'))) {
-      return s.slice(1, -1);
-    }
-    return s;
-  };
-
-  const meta: HtmlDocumentMeta = {
-    title: stripQuotes(yamlData.title) || path.basename(outputPath, ".html"),
-    author: stripQuotes(yamlData.author),
-    description: stripQuotes(yamlData.description) || stripQuotes(yamlData.summary),
-  };
-  const html = buildHtmlDocument(meta, css, content, codeThemeCss);
-  const inlinedHtml = normalizeInlineCss(await inlineCss(html), style);
-  const finalHtml = modifyHtmlStructure(inlinedHtml);
-
-  let backupPath = "";
-  if (fs.existsSync(outputPath)) {
-    backupPath = `${outputPath}.bak-${formatTimestamp()}`;
-    fs.renameSync(outputPath, backupPath);
-  }
-
-  fs.writeFileSync(outputPath, finalHtml, "utf-8");
-
-  if (backupPath) {
-    console.log(`Backup created: ${backupPath}`);
-  }
-  console.log(`HTML written: ${outputPath}`);
-}
-
-main().catch((error) => {
-  console.error(error);
-  process.exit(1);
-});
@@ -0,0 +1,8 @@
+{
+  "name": "baoyu-markdown-to-html-scripts",
+  "private": true,
+  "type": "module",
+  "dependencies": {
+    "baoyu-md": "file:./vendor/baoyu-md"
+  }
+}
@@ -1,4 +1,11 @@
 {
+  "name": "baoyu-md",
+  "private": true,
+  "version": "0.1.0",
+  "type": "module",
+  "exports": {
+    ".": "./src/index.ts"
+  },
  "dependencies": {
    "fflate": "^0.8.2",
    "front-matter": "^4.0.2",
@@ -12,7 +12,7 @@ export function printUsage(): void {
  console.error(
    [
      "Usage:",
-      "  npx tsx src/md/render.ts <markdown_file> [options]",
+      "  npx tsx render.ts <markdown_file> [options]",
      "",
      "Options:",
      `  --theme <name>        Theme (${THEME_NAMES.join(", ")})`,
@@ -0,0 +1,105 @@
+import { Lexer } from "marked";
+
+export type FrontmatterFields = Record<string, string>;
+
+export function parseFrontmatter(content: string): {
+  frontmatter: FrontmatterFields;
+  body: string;
+} {
+  const match = content.match(/^\s*---\r?\n([\s\S]*?)\r?\n---\r?\n?([\s\S]*)$/);
+  if (!match) {
+    return { frontmatter: {}, body: content };
+  }
+
+  const frontmatter: FrontmatterFields = {};
+  const lines = match[1]!.split("\n");
+  for (const line of lines) {
+    const colonIdx = line.indexOf(":");
+    if (colonIdx <= 0) continue;
+
+    const key = line.slice(0, colonIdx).trim();
+    const value = line.slice(colonIdx + 1).trim();
+    frontmatter[key] = stripWrappingQuotes(value);
+  }
+
+  return { frontmatter, body: match[2]! };
+}
+
+export function serializeFrontmatter(frontmatter: FrontmatterFields): string {
+  const entries = Object.entries(frontmatter);
+  if (entries.length === 0) return "";
+  return `---\n${entries.map(([key, value]) => `${key}: ${value}`).join("\n")}\n---\n`;
+}
+
+export function stripWrappingQuotes(value: string): string {
+  if (!value) return value;
+
+  const doubleQuoted = value.startsWith('"') && value.endsWith('"');
+  const singleQuoted = value.startsWith("'") && value.endsWith("'");
+  const cjkDoubleQuoted = value.startsWith("\u201c") && value.endsWith("\u201d");
+  const cjkSingleQuoted = value.startsWith("\u2018") && value.endsWith("\u2019");
+
+  if (doubleQuoted || singleQuoted || cjkDoubleQuoted || cjkSingleQuoted) {
+    return value.slice(1, -1).trim();
+  }
+
+  return value.trim();
+}
+
+export function toFrontmatterString(value: unknown): string | undefined {
+  if (typeof value === "string") {
+    return stripWrappingQuotes(value);
+  }
+  if (typeof value === "number" || typeof value === "boolean") {
+    return String(value);
+  }
+  return undefined;
+}
+
+export function pickFirstString(
+  frontmatter: Record<string, unknown>,
+  keys: string[],
+): string | undefined {
+  for (const key of keys) {
+    const value = toFrontmatterString(frontmatter[key]);
+    if (value) return value;
+  }
+  return undefined;
+}
+
+export function extractTitleFromMarkdown(markdown: string): string {
+  const tokens = Lexer.lex(markdown, { gfm: true, breaks: true });
+  for (const token of tokens) {
+    if (token.type !== "heading" || (token.depth !== 1 && token.depth !== 2)) continue;
+    return stripWrappingQuotes(token.text);
+  }
+  return "";
+}
+
+export function extractSummaryFromBody(body: string, maxLen: number): string {
+  const lines = body.split("\n");
+
+  for (const line of lines) {
+    const trimmed = line.trim();
+    if (!trimmed) continue;
+    if (trimmed.startsWith("#")) continue;
+    if (trimmed.startsWith("![")) continue;
+    if (trimmed.startsWith(">")) continue;
+    if (trimmed.startsWith("-") || trimmed.startsWith("*")) continue;
+    if (/^\d+\./.test(trimmed)) continue;
+    if (trimmed.startsWith("```")) continue;
+
+    const cleanText = trimmed
+      .replace(/\*\*(.+?)\*\*/g, "$1")
+      .replace(/\*(.+?)\*/g, "$1")
+      .replace(/\[([^\]]+)\]\([^)]+\)/g, "$1")
+      .replace(/`([^`]+)`/g, "$1");
+
+    if (cleanText.length > 20) {
+      if (cleanText.length <= maxLen) return cleanText;
+      return `${cleanText.slice(0, maxLen - 3)}...`;
+    }
+  }
+
+  return "";
+}
@@ -0,0 +1,206 @@
+import fs from "node:fs";
+import path from "node:path";
+
+import type { ReadTimeResults } from "reading-time";
+
+import {
+  COLOR_PRESETS,
+  DEFAULT_STYLE,
+  FONT_FAMILY_MAP,
+  THEME_STYLE_DEFAULTS,
+} from "./constants.js";
+import {
+  extractSummaryFromBody,
+  extractTitleFromMarkdown,
+  pickFirstString,
+  stripWrappingQuotes,
+} from "./content.js";
+import { loadExtendConfig } from "./extend-config.js";
+import {
+  buildCss,
+  buildHtmlDocument,
+  inlineCss,
+  loadCodeThemeCss,
+  modifyHtmlStructure,
+  normalizeInlineCss,
+  removeFirstHeading,
+} from "./html-builder.js";
+import { initRenderer, postProcessHtml, renderMarkdown } from "./renderer.js";
+import { loadThemeCss, normalizeThemeCss } from "./themes.js";
+import type { HtmlDocumentMeta, IOpts, StyleConfig, ThemeName } from "./types.js";
+
+export interface RenderMarkdownDocumentOptions {
+  codeTheme?: string;
+  countStatus?: boolean;
+  citeStatus?: boolean;
+  defaultTitle?: string;
+  fontFamily?: string;
+  fontSize?: string;
+  isMacCodeBlock?: boolean;
+  isShowLineNumber?: boolean;
+  keepTitle?: boolean;
+  legend?: string;
+  primaryColor?: string;
+  theme?: ThemeName;
+  themeMode?: IOpts["themeMode"];
+}
+
+export interface RenderMarkdownDocumentResult {
+  contentHtml: string;
+  html: string;
+  meta: HtmlDocumentMeta;
+  readingTime: ReadTimeResults;
+  style: StyleConfig;
+  yamlData: Record<string, unknown>;
+}
+
+export function resolveColorToken(value?: string): string | undefined {
+  if (!value) return undefined;
+  return COLOR_PRESETS[value] ?? value;
+}
+
+export function resolveFontFamilyToken(value?: string): string | undefined {
+  if (!value) return undefined;
+  return FONT_FAMILY_MAP[value] ?? value;
+}
+
+export function formatTimestamp(date = new Date()): string {
+  const pad = (value: number) => String(value).padStart(2, "0");
+  return `${date.getFullYear()}${pad(date.getMonth() + 1)}${pad(
+    date.getDate(),
+  )}${pad(date.getHours())}${pad(date.getMinutes())}${pad(date.getSeconds())}`;
+}
+
+export function buildMarkdownDocumentMeta(
+  markdown: string,
+  yamlData: Record<string, unknown>,
+  defaultTitle = "document",
+): HtmlDocumentMeta {
+  const title = pickFirstString(yamlData, ["title"])
+    || extractTitleFromMarkdown(markdown)
+    || defaultTitle;
+  const author = pickFirstString(yamlData, ["author"]);
+  const description = pickFirstString(yamlData, ["description", "summary"])
+    || extractSummaryFromBody(markdown, 120);
+
+  return {
+    title: stripWrappingQuotes(title),
+    author: author ? stripWrappingQuotes(author) : undefined,
+    description: description ? stripWrappingQuotes(description) : undefined,
+  };
+}
+
+export function resolveMarkdownStyle(options: RenderMarkdownDocumentOptions = {}): StyleConfig {
+  const theme = options.theme ?? "default";
+  const themeDefaults = THEME_STYLE_DEFAULTS[theme] ?? {};
+
+  return {
+    ...DEFAULT_STYLE,
+    ...themeDefaults,
+    ...(options.primaryColor !== undefined ? { primaryColor: options.primaryColor } : {}),
+    ...(options.fontFamily !== undefined ? { fontFamily: options.fontFamily } : {}),
+    ...(options.fontSize !== undefined ? { fontSize: options.fontSize } : {}),
+  };
+}
+
+export function resolveRenderOptions(
+  options: RenderMarkdownDocumentOptions = {},
+): RenderMarkdownDocumentOptions {
+  const extendConfig = loadExtendConfig();
+
+  return {
+    codeTheme: options.codeTheme ?? extendConfig.default_code_theme ?? "github",
+    countStatus: options.countStatus ?? extendConfig.count ?? false,
+    citeStatus: options.citeStatus ?? extendConfig.cite ?? false,
+    defaultTitle: options.defaultTitle,
+    fontFamily: options.fontFamily ?? resolveFontFamilyToken(extendConfig.default_font_family ?? undefined),
+    fontSize: options.fontSize ?? extendConfig.default_font_size ?? undefined,
+    isMacCodeBlock: options.isMacCodeBlock ?? extendConfig.mac_code_block ?? true,
+    isShowLineNumber: options.isShowLineNumber ?? extendConfig.show_line_number ?? false,
+    keepTitle: options.keepTitle ?? extendConfig.keep_title ?? false,
+    legend: options.legend ?? extendConfig.legend ?? "alt",
+    primaryColor: options.primaryColor ?? resolveColorToken(extendConfig.default_color ?? undefined),
+    theme: options.theme ?? extendConfig.default_theme ?? "default",
+    themeMode: options.themeMode,
+  };
+}
+
+export async function renderMarkdownDocument(
+  markdown: string,
+  options: RenderMarkdownDocumentOptions = {},
+): Promise<RenderMarkdownDocumentResult> {
+  const resolvedOptions = resolveRenderOptions(options);
+  const theme = resolvedOptions.theme ?? "default";
+  const codeTheme = resolvedOptions.codeTheme ?? "github";
+  const style = resolveMarkdownStyle(resolvedOptions);
+
+  const { baseCss, themeCss } = loadThemeCss(theme);
+  const css = normalizeThemeCss(buildCss(baseCss, themeCss, style));
+  const codeThemeCss = loadCodeThemeCss(codeTheme);
+
+  const renderer = initRenderer({
+    citeStatus: resolvedOptions.citeStatus ?? false,
+    countStatus: resolvedOptions.countStatus ?? false,
+    isMacCodeBlock: resolvedOptions.isMacCodeBlock ?? true,
+    isShowLineNumber: resolvedOptions.isShowLineNumber ?? false,
+    legend: resolvedOptions.legend ?? "alt",
+    themeMode: resolvedOptions.themeMode,
+  });
+
+  const { yamlData, markdownContent, readingTime } = renderer.parseFrontMatterAndContent(markdown);
+  const { html: baseHtml, readingTime: readingTimeResult } = renderMarkdown(markdown, renderer);
+
+  let contentHtml = postProcessHtml(baseHtml, readingTimeResult, renderer);
+  if (!(resolvedOptions.keepTitle ?? false)) {
+    contentHtml = removeFirstHeading(contentHtml);
+  }
+
+  const meta = buildMarkdownDocumentMeta(
+    markdownContent,
+    yamlData as Record<string, unknown>,
+    resolvedOptions.defaultTitle,
+  );
+  const html = buildHtmlDocument(meta, css, contentHtml, codeThemeCss);
+  const inlinedHtml = normalizeInlineCss(await inlineCss(html), style);
+
+  return {
+    contentHtml,
+    html: modifyHtmlStructure(inlinedHtml),
+    meta,
+    readingTime,
+    style,
+    yamlData: yamlData as Record<string, unknown>,
+  };
+}
+
+export async function renderMarkdownFileToHtml(
+  inputPath: string,
+  options: RenderMarkdownDocumentOptions = {},
+): Promise<RenderMarkdownDocumentResult & {
+  backupPath?: string;
+  outputPath: string;
+}> {
+  const markdown = fs.readFileSync(inputPath, "utf-8");
+  const outputPath = path.resolve(
+    path.dirname(inputPath),
+    `${path.basename(inputPath, path.extname(inputPath))}.html`,
+  );
+  const result = await renderMarkdownDocument(markdown, {
+    ...options,
+    defaultTitle: options.defaultTitle ?? path.basename(outputPath, ".html"),
+  });
+
+  let backupPath: string | undefined;
+  if (fs.existsSync(outputPath)) {
+    backupPath = `${outputPath}.bak-${formatTimestamp()}`;
+    fs.renameSync(outputPath, backupPath);
+  }
+
+  fs.writeFileSync(outputPath, result.html, "utf-8");
+
+  return {
+    ...result,
+    backupPath,
+    outputPath,
+  };
+}
@@ -0,0 +1,127 @@
+import { createHash } from "node:crypto";
+import fs from "node:fs";
+import http from "node:http";
+import https from "node:https";
+import path from "node:path";
+
+export interface ImagePlaceholder {
+  originalPath: string;
+  placeholder: string;
+}
+
+export interface ResolvedImageInfo extends ImagePlaceholder {
+  localPath: string;
+}
+
+export function replaceMarkdownImagesWithPlaceholders(
+  markdown: string,
+  placeholderPrefix: string,
+): {
+  images: ImagePlaceholder[];
+  markdown: string;
+} {
+  const images: ImagePlaceholder[] = [];
+  let imageCounter = 0;
+
+  const rewritten = markdown.replace(/!\[([^\]]*)\]\(([^)]+)\)/g, (_match, _alt, src) => {
+    const placeholder = `${placeholderPrefix}${++imageCounter}`;
+    images.push({
+      originalPath: src,
+      placeholder,
+    });
+    return placeholder;
+  });
+
+  return { images, markdown: rewritten };
+}
+
+export function getImageExtension(urlOrPath: string): string {
+  const match = urlOrPath.match(/\.(jpg|jpeg|png|gif|webp)(\?|$)/i);
+  return match ? match[1]!.toLowerCase() : "png";
+}
+
+export async function downloadFile(url: string, destPath: string): Promise<void> {
+  return await new Promise((resolve, reject) => {
+    const protocol = url.startsWith("https://") ? https : http;
+    const file = fs.createWriteStream(destPath);
+
+    const request = protocol.get(url, { headers: { "User-Agent": "Mozilla/5.0" } }, (response) => {
+      if (response.statusCode === 301 || response.statusCode === 302) {
+        const redirectUrl = response.headers.location;
+        if (redirectUrl) {
+          file.close();
+          fs.unlinkSync(destPath);
+          void downloadFile(redirectUrl, destPath).then(resolve).catch(reject);
+          return;
+        }
+      }
+
+      if (response.statusCode !== 200) {
+        file.close();
+        fs.unlinkSync(destPath);
+        reject(new Error(`Failed to download: ${response.statusCode}`));
+        return;
+      }
+
+      response.pipe(file);
+      file.on("finish", () => {
+        file.close();
+        resolve();
+      });
+    });
+
+    request.on("error", (error) => {
+      file.close();
+      fs.unlink(destPath, () => {});
+      reject(error);
+    });
+
+    request.setTimeout(30_000, () => {
+      request.destroy();
+      reject(new Error("Download timeout"));
+    });
+  });
+}
+
+export async function resolveImagePath(
+  imagePath: string,
+  baseDir: string,
+  tempDir: string,
+  logLabel = "baoyu-md",
+): Promise<string> {
+  if (imagePath.startsWith("http://") || imagePath.startsWith("https://")) {
+    const hash = createHash("md5").update(imagePath).digest("hex").slice(0, 8);
+    const ext = getImageExtension(imagePath);
+    const localPath = path.join(tempDir, `remote_${hash}.${ext}`);
+
+    if (!fs.existsSync(localPath)) {
+      console.error(`[${logLabel}] Downloading: ${imagePath}`);
+      await downloadFile(imagePath, localPath);
+    }
+    return localPath;
+  }
+
+  if (path.isAbsolute(imagePath)) {
+    return imagePath;
+  }
+
+  return path.resolve(baseDir, imagePath);
+}
+
+export async function resolveContentImages(
+  images: ImagePlaceholder[],
+  baseDir: string,
+  tempDir: string,
+  logLabel = "baoyu-md",
+): Promise<ResolvedImageInfo[]> {
+  const resolved: ResolvedImageInfo[] = [];
+
+  for (const image of images) {
+    resolved.push({
+      ...image,
+      localPath: await resolveImagePath(image.originalPath, baseDir, tempDir, logLabel),
+    });
+  }
+
+  return resolved;
+}
@@ -0,0 +1,10 @@
+export * from "./cli.js";
+export * from "./constants.js";
+export * from "./content.js";
+export * from "./document.js";
+export * from "./extend-config.js";
+export * from "./html-builder.js";
+export * from "./images.js";
+export * from "./renderer.js";
+export * from "./themes.js";
+export * from "./types.js";
@@ -0,0 +1,43 @@
+#!/usr/bin/env npx tsx
+
+import path from "node:path";
+import { parseArgs, printUsage } from "./cli.js";
+import { renderMarkdownFileToHtml } from "./document.js";
+
+async function main(): Promise<void> {
+  const options = parseArgs(process.argv.slice(2));
+  if (!options) {
+    printUsage();
+    process.exit(1);
+  }
+
+  const inputPath = path.resolve(process.cwd(), options.inputPath);
+  if (!inputPath.toLowerCase().endsWith(".md")) {
+    console.error("Input file must end with .md");
+    process.exit(1);
+  }
+
+  const result = await renderMarkdownFileToHtml(inputPath, {
+    codeTheme: options.codeTheme,
+    countStatus: options.countStatus,
+    citeStatus: options.citeStatus,
+    fontFamily: options.fontFamily,
+    fontSize: options.fontSize,
+    isMacCodeBlock: options.isMacCodeBlock,
+    isShowLineNumber: options.isShowLineNumber,
+    keepTitle: options.keepTitle,
+    legend: options.legend,
+    primaryColor: options.primaryColor,
+    theme: options.theme,
+  });
+
+  if (result.backupPath) {
+    console.log(`Backup created: ${result.backupPath}`);
+  }
+  console.log(`HTML written: ${result.outputPath}`);
+}
+
+main().catch((error) => {
+  console.error(error);
+  process.exit(1);
+});
--- a/Show More
+++ b/Show More