From d9687d9f605ce1d1ecdf315ee0332f94abc40549 Mon Sep 17 00:00:00 2001 From: ViperEkura <3081035982@qq.com> Date: Mon, 20 Apr 2026 16:31:50 +0800 Subject: [PATCH] =?UTF-8?q?feat:=20=E4=BD=BF=E7=94=A8js=20=E5=AE=9E?= =?UTF-8?q?=E7=8E=B0=E6=B8=B2=E6=9F=93?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .gitignore | 13 +- markdown-converter/SKILL.md | 47 - markdown-converter/scripts/md_convert.py | 376 ---- md2img/SKILL.md | 138 ++ md2img/scripts/package-lock.json | 2129 ++++++++++++++++++++++ md2img/scripts/package.json | 18 + md2img/scripts/render.js | 457 +++++ 7 files changed, 2751 insertions(+), 427 deletions(-) delete mode 100644 markdown-converter/SKILL.md delete mode 100644 markdown-converter/scripts/md_convert.py create mode 100644 md2img/SKILL.md create mode 100644 md2img/scripts/package-lock.json create mode 100644 md2img/scripts/package.json create mode 100644 md2img/scripts/render.js diff --git a/.gitignore b/.gitignore index 6722b82..bf5f73d 100644 --- a/.gitignore +++ b/.gitignore @@ -1,9 +1,14 @@ # Ignore everything by default * +# Keep all directories !*/ -# Whitelist specific files and directories -!.gitignore -!SKILL.md -!*.py + +# Keep specific file types !*.md +!*.py +!*.js +!*.json + +# Keep root .gitignore +!.gitignore diff --git a/markdown-converter/SKILL.md b/markdown-converter/SKILL.md deleted file mode 100644 index 74ff984..0000000 --- a/markdown-converter/SKILL.md +++ /dev/null @@ -1,47 +0,0 @@ ---- -name: markdown-converter -description: A simple tool to convert Markdown to PNG images using markdown library + BeautifulSoup + Pillow. -metadata: {"clawdbot":{"emoji":"🖼️","os":["linux","darwin","win32"]}} ---- - -# Markdown to PNG Converter - -A simple tool to convert Markdown documents to PNG images using markdown library, BeautifulSoup, and Pillow. - -## Features - -- **Full GFM support**: Tables, code blocks, task lists, and more via markdown library -- **BeautifulSoup parsing**: Robust HTML parsing -- **Pure Pillow rendering**: No browser required -- **CJK support**: Uses system fonts for Chinese character rendering - -## Installation - -```bash -pip install Pillow markdown beautifulsoup4 -``` - -## Dependencies - -- **Pillow**: Image processing and drawing -- **markdown**: Python Markdown parser with GFM extensions -- **beautifulsoup4**: HTML parsing - -## Usage - -```bash -# Convert Markdown to PNG -python scripts/md_convert.py input.md output.png -``` - -## Supported Platforms - -- **Windows**: Uses system CJK fonts -- **macOS**: Uses system CJK fonts -- **Linux**: Uses system CJK fonts - -## Notes - -- Uses markdown library for robust Markdown parsing -- BeautifulSoup handles complex HTML structures -- Chinese fonts are supported via system fonts diff --git a/markdown-converter/scripts/md_convert.py b/markdown-converter/scripts/md_convert.py deleted file mode 100644 index f739bfb..0000000 --- a/markdown-converter/scripts/md_convert.py +++ /dev/null @@ -1,376 +0,0 @@ -"""Markdown 转 PNG 图片工具（使用 markdown 库 + BeautifulSoup + Pillow） - -Dependencies: - - pip install Pillow markdown beautifulsoup4 - -特点： - - 使用 markdown 库解析，支持完整 GFM - - 使用 BeautifulSoup 解析 HTML - - 纯 Pillow 渲染，无需浏览器 -""" - -import sys -import os -import re -from pathlib import Path - -try: - from PIL import Image, ImageDraw, ImageFont -except ImportError: - print("Error: Pillow not installed. Run: pip install Pillow", file=sys.stderr) - sys.exit(1) - -try: - import markdown -except ImportError: - print("Error: markdown not installed. Run: pip install markdown", file=sys.stderr) - sys.exit(1) - -try: - from bs4 import BeautifulSoup -except ImportError: - print("Error: beautifulsoup4 not installed. Run: pip install beautifulsoup4", file=sys.stderr) - sys.exit(1) - - -# ============================================================ -# 字体查找 -# ============================================================ - -def _find_font(): - """Find a suitable TrueType font across platforms.""" - candidates = [] - if sys.platform == "win32": - pf = os.environ.get("WINDIR", r"C:\Windows") - candidates = [ - os.path.join(pf, "Fonts", "msyh.ttc"), - os.path.join(pf, "Fonts", "msyhbd.ttc"), - os.path.join(pf, "Fonts", "simhei.ttf"), - os.path.join(pf, "Fonts", "simsun.ttc"), - ] - elif sys.platform == "darwin": - candidates = [ - "/System/Library/Fonts/PingFang.ttc", - "/System/Library/Fonts/STHeiti Light.ttc", - "/Library/Fonts/Arial Unicode.ttf", - ] - else: - candidates = [ - "/usr/share/fonts/truetype/noto/NotoSansCJK-Regular.ttc", - "/usr/share/fonts/opentype/noto/NotoSansCJK-Regular.ttc", - "/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", - "/usr/share/fonts/truetype/wqy/wqy-microhei.ttc", - "/usr/share/fonts/opentype/noto/NotoSansSC-Regular.otf", - ] - for p in candidates: - if os.path.exists(p): - return p - return None - - -# ============================================================ -# Markdown 转 PNG -# ============================================================ - -def markdown_to_png(md_text, img_path): - """将 Markdown 转换为 PNG 图片""" - - font_path = _find_font() - - # 加载字体 - try: - if font_path: - font_h1 = ImageFont.truetype(font_path, 24) - font_h2 = ImageFont.truetype(font_path, 20) - font_h3 = ImageFont.truetype(font_path, 18) - font_body = ImageFont.truetype(font_path, 15) - font_code = ImageFont.truetype(font_path, 13) - font_small = ImageFont.truetype(font_path, 12) - else: - font_h1 = font_h2 = font_h3 = font_body = font_code = font_small = ImageFont.load_default() - except Exception: - font_h1 = font_h2 = font_h3 = font_body = font_code = font_small = ImageFont.load_default() - - W = 800 - PAD = 40 - CONTENT_W = W - PAD * 2 - - # 使用 markdown 库转换为 HTML，再用 BeautifulSoup 解析 - md = markdown.Markdown(extensions=['tables', 'fenced_code', 'codehilite', 'nl2br']) - html = md.convert(md_text) - soup = BeautifulSoup(html, 'html.parser') - - # 获取 body 或根元素 - root = soup.body if soup.body else soup - - # 创建临时 draw 对象用于测量 - temp_img = Image.new('RGB', (W, 100)) - draw = ImageDraw.Draw(temp_img) - - def measure_text(text, font): - bbox = draw.textbbox((0, 0), text, font=font) - return bbox[2] - bbox[0] - - def wrap_text(text, font, max_width): - lines = [] - for paragraph in text.split('\n'): - if not paragraph.strip(): - lines.append('') - continue - current = '' - for ch in paragraph: - test = current + ch - if measure_text(test, font) > max_width and current: - lines.append(current) - current = ch - else: - current = test - if current: - lines.append(current) - return lines - - def get_text(elem): - """获取元素的文本内容""" - return elem.get_text() - - # 预计算高度 - y = PAD - line_height = 26 - - def calc_height(elem): - nonlocal y - tag = elem.name - - if tag in ('h1', 'h2', 'h3'): - text = get_text(elem) - font = {'h1': font_h1, 'h2': font_h2, 'h3': font_h3}[tag] - lines = wrap_text(text, font, CONTENT_W) - h = {'h1': 40, 'h2': 36, 'h3': 32}[tag] - y += len(lines) * h + (15 if tag == 'h1' else 12 if tag == 'h2' else 10) - - elif tag == 'p': - text = get_text(elem) - lines = wrap_text(text, font_body, CONTENT_W - 20) - y += len(lines) * line_height + 8 - - elif tag == 'pre' or (tag == 'div' and 'codehilite' in elem.get('class', [])): - text = get_text(elem) - lines = text.split('\n') if text else [''] - y += len(lines) * 20 + 20 - - elif tag == 'blockquote': - text = get_text(elem) - lines = wrap_text(text, font_body, CONTENT_W - 30) - y += len(lines) * line_height + 10 + 15 # 边框高度 + 间距 - - elif tag == 'ul': - for li in elem.find_all('li', recursive=False): - text = get_text(li) - lines = wrap_text(text, font_body, CONTENT_W - 20) - y += len(lines) * line_height + 4 - y += 8 - - elif tag == 'ol': - for li in elem.find_all('li', recursive=False): - text = get_text(li) - lines = wrap_text(text, font_body, CONTENT_W - 20) - y += len(lines) * line_height + 4 - y += 8 - - elif tag == 'hr': - y += 30 - - elif tag == 'table': - for row in elem.find_all('tr'): - y += 36 - y += 20 - - for elem in root.children: - if hasattr(elem, 'name') and elem.name: - calc_height(elem) - - y += PAD + 40 - TOTAL_H = max(400, y) - - # 创建图片 - img = Image.new('RGB', (W, TOTAL_H), '#1a1a2e') - draw = ImageDraw.Draw(img) - - # 渐变背景 - for row in range(TOTAL_H): - ratio = row / TOTAL_H - r = int(26 + (255 - 26) * ratio * 0.1) - g = int(26 + (255 - 26) * ratio * 0.1) - b = int(46 + (255 - 46) * ratio * 0.1) - draw.line([(0, row), (W, row)], fill=(r, g, b)) - - # 白色内容区域 - content_top = 60 - draw.rectangle( - [0, content_top, W - 1, TOTAL_H - 1], - fill='#ffffff', - ) - - # 顶部渐变 - for row in range(content_top): - ratio = row / content_top - r = int(42 + (61 - 42) * ratio) - g = int(98 + (133 - 98) * ratio) - b = int(239 + (255 - 239) * ratio) - draw.line([(0, row), (W, row)], fill=(r, g, b)) - - # 渲染内容 - x = PAD - cy = content_top + PAD - - def render_elem(elem): - nonlocal cy, x - tag = elem.name - - if tag == 'h1': - text = get_text(elem) - lines = wrap_text(text, font_h1, CONTENT_W) - for line in lines: - draw.text((x, cy), line, fill='#1a1a2e', font=font_h1) - cy += 40 - cy += 15 - - elif tag == 'h2': - text = get_text(elem) - lines = wrap_text(text, font_h2, CONTENT_W) - for line in lines: - draw.text((x, cy), line, fill='#1a1a2e', font=font_h2) - cy += 36 - cy += 12 - - elif tag == 'h3': - text = get_text(elem) - lines = wrap_text(text, font_h3, CONTENT_W) - for line in lines: - draw.text((x, cy), line, fill='#1a1a2e', font=font_h3) - cy += 32 - cy += 10 - - elif tag == 'p': - text = get_text(elem) - lines = wrap_text(text, font_body, CONTENT_W - 20) - for line in lines: - draw.text((x, cy), line, fill='#374151', font=font_body) - cy += line_height - cy += 8 - - elif tag == 'strong' or tag == 'b': - text = get_text(elem) - lines = wrap_text(text, font_body, CONTENT_W - 20) - for line in lines: - draw.text((x, cy), line, fill='#1a1a2e', font=font_body) - cy += line_height - - elif tag == 'em' or tag == 'i': - text = get_text(elem) - lines = wrap_text(text, font_body, CONTENT_W - 20) - for line in lines: - draw.text((x, cy), line, fill='#666666', font=font_body) - cy += line_height - - elif tag == 'code' and not elem.find_all(recursive=False): - # 行内代码 - text = get_text(elem) - draw.text((x, cy), text, fill='#333333', font=font_code) - x += measure_text(text, font_code) - - elif tag == 'pre' or (tag == 'div' and 'codehilite' in elem.get('class', [])): - # 代码高亮块 - text = get_text(elem) - lines = text.split('\n') if text else [''] - code_h = len(lines) * 20 + 20 - - draw.rounded_rectangle( - [x, cy, x + CONTENT_W, cy + code_h], - radius=8, - fill='#f4f4f4', - outline='#e0e0e0', - width=1, - ) - - for i, line in enumerate(lines): - max_chars = int((CONTENT_W - 24) / 7) - display_line = line[:max_chars] if max_chars > 0 else line[:80] - draw.text((x + 12, cy + 10 + i * 20), display_line, fill='#333333', font=font_code) - - cy += code_h + 15 - - elif tag == 'blockquote': - text = get_text(elem) - lines = wrap_text(text, font_body, CONTENT_W - 30) - quote_h = len(lines) * line_height - draw.rectangle([x, cy, x + 3, cy + quote_h], fill='#0066cc') - # 引用文本 - for line in lines: - draw.text((x + 15, cy), line, fill='#666666', font=font_body) - cy += line_height - cy += 10 - - elif tag == 'ul': - for li in elem.find_all('li', recursive=False): - text = get_text(li) - draw.text((x, cy), '•', fill='#0066cc', font=font_body) - draw.text((x + 16, cy), text.strip(), fill='#374151', font=font_body) - cy += line_height - cy += 8 - - elif tag == 'ol': - for i, li in enumerate(elem.find_all('li', recursive=False), 1): - text = get_text(li) - draw.text((x, cy), f'{i}.', fill='#0066cc', font=font_body) - draw.text((x + 20, cy), text.strip(), fill='#374151', font=font_body) - cy += line_height - cy += 8 - - elif tag == 'hr': - draw.line([(x, cy), (x + CONTENT_W, cy)], fill='#e0e0e0', width=1) - cy += 30 - - elif tag == 'table': - for row in elem.find_all('tr'): - cells = row.find_all(['td', 'th']) - if cells: - cell_x = x - cell_w = CONTENT_W // len(cells) - for cell in cells: - cell_text = get_text(cell).strip()[:15] - draw.rectangle([cell_x, cy, cell_x + cell_w, cy + 32], outline='#ddd') - draw.text((cell_x + 8, cy + 6), cell_text, fill='#333', font=font_small) - cell_x += cell_w - cy += 36 - - elif tag == 'br': - cy += line_height - - for elem in root.children: - if hasattr(elem, 'name') and elem.name: - render_elem(elem) - - Path(img_path).parent.mkdir(parents=True, exist_ok=True) - img.save(img_path, 'PNG') - print(f'Converted: Markdown -> {img_path}') - - -def main(): - if len(sys.argv) < 3: - print("Usage: python md_convert.py ", file=sys.stderr) - sys.exit(1) - - input_path = sys.argv[1] - output_path = sys.argv[2] - - if not os.path.exists(input_path): - print(f"Error: Input file not found: {input_path}", file=sys.stderr) - sys.exit(1) - - md_text = Path(input_path).read_text(encoding="utf-8") - markdown_to_png(md_text, output_path) - - -if __name__ == "__main__": - main() diff --git a/md2img/SKILL.md b/md2img/SKILL.md new file mode 100644 index 0000000..ca3ab85 --- /dev/null +++ b/md2img/SKILL.md @@ -0,0 +1,138 @@ +--- +name: md2img +description: > + This skill should be used when the user wants to render a Markdown document + (containing Mermaid diagrams, LaTeX math formulas, or rich formatting) into a PNG image. +--- + +# md2img — Markdown → PNG + +Render Markdown documents into high-quality PNG images with full support for Mermaid diagrams, LaTeX math formulas, code syntax highlighting, and GFM tables. + +## Features + +- **Mermaid diagrams**: flowchart, sequence, class, state, gantt, pie, etc. (rendered in-browser via mermaid.js) +- **LaTeX math**: inline `$...$` and block `$$...$$` / `\[...\]` (via KaTeX) +- **GFM syntax**: tables, task lists, strikethrough, code blocks +- **Code highlighting**: via highlight.js CSS +- **Dark/Light theme**: auto-detects system preference, or override with `--dark`/`--light` +- **Paper sizes**: A4 (default) or Letter, 2x DPI for crisp output +- **Cross-platform**: Windows (Chrome/Edge) and Linux (Chrome/Chromium) + +## Usage Workflow + +1. Write the Markdown content to a temporary `.md` file +2. Run the render script +3. Present the generated PNG to the user + +### Command + +```bash +node /scripts/render.js [output.png] [--paper=a4|letter] [--dark|--light] +``` + +### Parameters + +| Parameter | Default | Description | +|-----------|---------|-------------| +| `input.md` | (required) | Input Markdown file path | +| `output.png` | `.png` | Output PNG file path | +| `--paper` | `a4` | Paper size: `a4` (794px) or `letter` (816px) | +| `--dark` | auto | Force dark theme | +| `--light` | auto | Force light theme | + +### Examples + +```bash +# Basic usage +node render.js readme.md + +# Specify output path and paper size +node render.js slides.md output.png --paper=letter + +# Force dark theme (for dark background images) +node render.js notes.md card.png --dark +``` + +## Environment Setup + +### Windows (current machine) + +Already configured. Uses local Edge/Chrome via `puppeteer-core`. + +### Linux (headless server) + +On Linux servers without a GUI browser, install Chromium: + +```bash +# Option 1: Install puppeteer (auto-downloads Chromium) +cd ~/.workbuddy/skills/md2img/scripts +npm install puppeteer +npx puppeteer browsers install chrome + +# Option 2: Install system Chromium +# Ubuntu/Debian: +sudo apt install -y chromium-browser +# CentOS/RHEL: +sudo yum install -y chromium +# Alpine: +apk add chromium + +# Option 3: Set CHROME_PATH env variable +export CHROME_PATH=/usr/bin/chromium-browser +``` + +**Linux headless prerequisites:** + +```bash +# Ubuntu/Debian — required shared libraries +sudo apt install -y libnss3 libatk1.0-0 libatk-bridge2.0-0 libcups2 libdrm2 \ + libxkbcommon0 libxcomposite1 libxdamage1 libxrandr2 libgbm1 libasound2 \ + libpango-1.0-0 libcairo2 libxshmfence1 + +# Alpine +apk add nss atk cups-libs libdrm libxkbcommon libxcomposite libxdamage \ + libxrandr mesa-gbm alsa-lib pango cairo +``` + +### Docker deployment + +```dockerfile +FROM node:20-slim + +# Install Chromium dependencies +RUN apt-get update && apt-get install -y \ + chromium \ + fonts-noto-cjk \ + --no-install-recommends && \ + rm -rf /var/lib/apt/lists/* + +# Set CHROME_PATH so puppeteer-core finds it +ENV CHROME_PATH=/usr/bin/chromium +ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true + +WORKDIR /app +COPY scripts/package.json scripts/render.js ./ +RUN npm install --production + +ENTRYPOINT ["node", "render.js"] +``` + +## Technical Details + +- **Markdown parsing**: `marked` v12 with custom renderer for mermaid code blocks +- **LaTeX rendering**: `KaTeX` server-side pre-render (no browser-side JS needed) +- **Mermaid rendering**: `mermaid.js` browser-side rendering via CDN (mermaid requires DOM API, cannot render in Node.js) +- **Browser automation**: `puppeteer-core` (Windows, uses local Edge/Chrome) or `puppeteer` (Linux, bundled Chromium), with auto-detection +- **Output**: 2x DPI PNG (A4: 1588px wide, Letter: 1632px wide) +- **Font stack**: System fonts + CJK fallback (PingFang SC, Microsoft YaHei, Noto Sans SC) + +## Troubleshooting + +| Issue | Solution | +|-------|----------| +| "No Chrome/Edge/Chromium found" | Install Chrome/Chromium or run `npm install puppeteer` | +| Chinese characters missing on Linux | Install CJK fonts: `apt install fonts-noto-cjk` | +| `/dev/shm` errors on Linux | Use `--disable-dev-shm-usage` (already included) | +| Puppeteer download timeout in China | Set mirror: `PUPPETEER_DOWNLOAD_BASE_URL=https://cdn.npmmirror.com/binaries/chrome-for-testing npx puppeteer browsers install chrome` | +| Screenshot blank/white | Ensure `waitUntil: 'networkidle0'` completes; check font availability | diff --git a/md2img/scripts/package-lock.json b/md2img/scripts/package-lock.json new file mode 100644 index 0000000..f32cce7 --- /dev/null +++ b/md2img/scripts/package-lock.json @@ -0,0 +1,2129 @@ +{ + "name": "md2img", + "version": "1.0.0", + "lockfileVersion": 3, + "requires": true, + 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"https://github.com/sponsors/colinhacks" + } + } + } +} diff --git a/md2img/scripts/package.json b/md2img/scripts/package.json new file mode 100644 index 0000000..314e92e --- /dev/null +++ b/md2img/scripts/package.json @@ -0,0 +1,18 @@ +{ + "name": "md2img", + "version": "1.1.0", + "description": "Render Markdown with Mermaid & LaTeX to PNG (cross-platform)", + "scripts": { + "render": "node render.js", + "setup:linux": "npm install && npx puppeteer browsers install chrome", + "setup:fonts": "bash scripts/setup-linux-fonts.sh" + }, + "dependencies": { + "katex": "^0.16.9", + "marked": "^12.0.0", + "mermaid": "^10.9.0", + "puppeteer-core": "^22.15.0" + }, + "optionalDependencies": {}, + "_linuxSetup": "On Linux headless servers without Chrome/Chromium, run: npm install puppeteer && npx puppeteer browsers install chrome" +} diff --git a/md2img/scripts/render.js b/md2img/scripts/render.js new file mode 100644 index 0000000..3b5f4ea --- /dev/null +++ b/md2img/scripts/render.js @@ -0,0 +1,457 @@ +/** + * md2img - Markdown + Mermaid + LaTeX => PNG + * + * Usage: + * node render.js [output.png] [--paper=a4|letter] [--dark|--light] + * + * Rendering strategy: + * - LaTeX (KaTeX): pre-rendered in Node.js → inline HTML + * - Mermaid: rendered in browser via mermaid.js CDN + * - Code highlighting: highlight.js via CDN + * + * Browser: auto-detects puppeteer-core (local Edge/Chrome) or puppeteer (bundled Chromium) + * Environment variable CHROME_PATH can override browser executable path + */ + +const fs = require('fs'); +const path = require('path'); +const { marked } = require('marked'); +const katex = require('katex'); + +// CLI args +const args = process.argv.slice(2); +let inputPath = null; +let outputPath = null; +let paper = 'a4'; +let forcedTheme = null; + +for (const arg of args) { + if (arg.startsWith('--paper=')) { paper = arg.split('=')[1]; } + else if (arg === '--dark') { forcedTheme = 'dark'; } + else if (arg === '--light') { forcedTheme = 'light'; } + else if (!inputPath) { inputPath = arg; } + else if (!outputPath) { outputPath = arg; } +} + +if (!inputPath) { + console.error('Usage: node render.js [output.png] [--paper=a4|letter] [--dark|--light]'); + process.exit(1); +} + +inputPath = path.resolve(inputPath); +if (!outputPath) { outputPath = inputPath.replace(/\.md$/i, '.png'); } +outputPath = path.resolve(outputPath); + +const markdown = fs.readFileSync(inputPath, 'utf-8'); + +// Page dimensions +const PAGE_WIDTH = paper === 'letter' ? 816 : 794; +const MARGIN = 48; + +// Helpers +function escapeHtml(str) { + return str + .replace(/&/g, '&') + .replace(//g, '>') + .replace(/"/g, '"') + .replace(/'/g, '''); +} + +function sleep(ms) { + return new Promise(resolve => setTimeout(resolve, ms)); +} + +// LaTeX rendering helper +function renderMath(text, displayMode) { + try { + return katex.renderToString(text, { + displayMode, + throwOnError: false, + strict: false, // Allow more LaTeX commands + }); + } catch (e) { + return displayMode + ? `
${escapeHtml(text)}
` + : `${escapeHtml(text)}`; + } +} + +// marked extension for inline math $...$ +const mathExtension = { + name: 'math', + level: 'inline', + start(src) { + const idx = src.search(/(?${renderMath(token.text, true)}`; + }, +}; + +// marked extension for \[...\] block math +const bracketMathExtension = { + name: 'bracketMath', + level: 'block', + start(src) { + const idx = src.indexOf('\\['); + return idx === -1 ? undefined : idx; + }, + tokenizer(src) { + const match = src.match(/^\\\[([\s\S]+?)\\\]\n?/); + if (match) { + return { type: 'bracketMath', raw: match[0], text: match[1].trim() }; + } + }, + renderer(token) { + return `
${renderMath(token.text, true)}
`; + }, +}; + +// marked extension for \begin{env}...\end{env} environments +const envMathExtension = { + name: 'envMath', + level: 'block', + start(src) { + const idx = src.indexOf('\\begin{'); + return idx === -1 ? undefined : idx; + }, + tokenizer(src) { + // Supported math environments + const envs = [ + 'equation', 'equation\\*', + 'align', 'align\\*', 'alignat', 'alignat\\*', + 'gather', 'gather\\*', 'multline', 'multline\\*', + 'aligned', 'gathered', 'split', 'alignedat', 'multlined', + 'matrix', 'pmatrix', 'bmatrix', 'Bmatrix', 'vmatrix', 'Vmatrix', + 'smallmatrix', 'smallmatrix\\*', 'psmallmatrix', 'bsmallmatrix', 'Bsmallmatrix', 'vsmallmatrix', 'Vsmallmatrix', + 'cases', 'rcases', 'numcases', 'subnumcases', + 'array', 'CD', + 'subarray', 'subsplit', + ]; + const envPattern = envs.map(e => e.replace('\\*', '\\*')).join('|'); + const regex = new RegExp(`^\\\\begin\\{(${envPattern})\\}([\\s\\S]*?)\\\\end\\{\\1\\}`); + const match = src.match(regex); + if (match) { + return { type: 'envMath', raw: match[0], env: match[1], text: match[2].trim() }; + } + }, + renderer(token) { + return `
${renderMath(token.text, true)}
`; + }, +}; + +// LaTeX rendering function (post-processing for non-marked syntax) +function renderLatex(text) { + // Clean up extra
tags around math-block divs (from marked's breaks: true) + text = text.replace(/\s*
/gi, '
'); + text = text.replace(/<\/div>\s*/gi, '
'); + return text; +} + +// Configure marked with math extensions +marked.use({ + extensions: [ + blockMathExtension, + bracketMathExtension, + envMathExtension, + mathExtension, + ], + renderer: { + // Handle code blocks + code(code, infostring, escaped) { + const lang = (infostring || '').trim(); + if (lang === 'mermaid') { + return `
${code}
`; + } + const langClass = lang ? ` language-${escapeHtml(lang)}` : ''; + return `
${escapeHtml(code)}
`; + }, + // Handle inline code + codespan(text) { + return `${escapeHtml(text)}`; + }, + // Handle tables for better styling + table(header, body) { + return `
${header}${body}
`; + }, + }, +}); +marked.setOptions({ breaks: true, gfm: true }); + +// renderer already defined in extension + +// Build HTML +function buildHtml(md) { + let html = marked.parse(md); + html = renderLatex(html); + return html; +} + +// CSS template +function buildCss(theme) { + const isDark = theme === 'dark'; + // CJK font stack: Linux优先使用Noto Sans CJK，macOS用PingFang，Windows用Microsoft YaHei + const cjkFonts = "'Noto Sans SC', 'Noto Sans CJK SC', 'Source Han Sans SC', 'WenQuanYi Micro Hei', 'PingFang SC', 'Microsoft YaHei', sans-serif"; + + return ` +@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&display=swap'); + +:root { color-scheme: ${isDark ? 'dark' : 'light'}; } +${isDark ? ` +:root { --bg: #1e1e1e; --text: #d4d4d4; --code-bg: #2d2d2d; --border: #404040; } +pre, code { background: var(--code-bg); color: var(--text); } +a { color: #79c0ff; } +.math-block { background: #2d2d2d !important; } +tr:nth-child(even) { background: rgba(255,255,255,0.03); } +blockquote { background: rgba(255,255,255,0.04); } +` : ` +:root { --bg: #ffffff; --text: #24292e; --code-bg: #f6f8fa; --border: #d0d7de; } +a { color: #0550ae; } +.math-block { background: #f6f8fa !important; } +tr:nth-child(even) { background: rgba(0,0,0,0.03); } +blockquote { background: rgba(0,0,0,0.04); } +`} +* { box-sizing: border-box; margin: 0; padding: 0; } +body { + width: ${PAGE_WIDTH}px; + background: var(--bg); + color: var(--text); + font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', ${cjkFonts}; + font-size: 14px; + line-height: 1.7; + padding: ${MARGIN}px; + word-break: break-word; + overflow-wrap: break-word; +} +h1, h2, h3, h4, h5, h6 { margin: 1.2em 0 0.5em; font-weight: 600; line-height: 1.3; } +h1 { font-size: 1.8em; border-bottom: 2px solid var(--border); padding-bottom: 0.3em; } +h2 { font-size: 1.4em; border-bottom: 1px solid var(--border); padding-bottom: 0.2em; } +h3 { font-size: 1.15em; } +p { margin: 0.6em 0; } +ul, ol { margin: 0.6em 0; padding-left: 1.8em; } +li { margin: 0.2em 0; } +li > p { margin: 0.3em 0; } +pre { margin: 0.8em 0; padding: 12px 16px; border-radius: 6px; overflow-x: auto; font-size: 13px; background: var(--code-bg); border: 1px solid var(--border); } +code { font-family: 'Cascadia Code', 'Fira Code', 'JetBrains Mono', 'Consolas', 'Noto Sans Mono CJK SC', monospace; font-size: 0.9em; } +p code, li code { padding: 2px 6px; border-radius: 4px; background: var(--code-bg); border: 1px solid var(--border); } +table { border-collapse: collapse; margin: 0.8em 0; width: 100%; } +th, td { border: 1px solid var(--border); padding: 6px 12px; text-align: left; } +th { background: var(--code-bg); font-weight: 600; } +.table-wrapper { overflow-x: auto; margin: 0.8em 0; } +.table-wrapper table { margin: 0; } +.inline-code { font-family: inherit; background: none; padding: 0; border: none; } +blockquote { margin: 0.8em 0; padding: 8px 16px; border-left: 4px solid var(--border); } +hr { border: none; border-top: 1px solid var(--border); margin: 1em 0; } +a { text-decoration: none; } +a:hover { text-decoration: underline; } +img { max-width: 100%; height: auto; } +.mermaid { margin: 1em 0; text-align: center; } +.mermaid svg { max-width: 100%; height: auto; } +.mermaid-error { color: #f85149; padding: 12px; border: 1px dashed #f85149; border-radius: 6px; margin: 0.5em 0; text-align: left; } +.mermaid-error pre { color: #f85149; white-space: pre-wrap; font-size: 12px; } +.math-block { display: block; text-align: center; margin: 1em 0; padding: 12px; border-radius: 6px; overflow-wrap: break-word; word-break: break-word; max-width: 100%; overflow-x: visible; } +.math-error { color: #f85149; font-family: monospace; } +/* KaTeX CJK support */ +.katex { font-family: 'KaTeX_Main', 'Noto Sans SC', 'Noto Sans CJK SC', sans-serif; } +.katex .mord, .katex .mop, .katex .mbin, .katex .mrel, .katex .mopen, .katex .mclose, .katex .mpunct, .katex .minner { font-family: inherit; } +`; +} + +// Browser detection +const osPlatform = process.platform; +const osArch = process.arch; + +function findBrowserPath() { + if (process.env.CHROME_PATH && fs.existsSync(process.env.CHROME_PATH)) { + return process.env.CHROME_PATH; + } + const candidates = { + win32: [ + 'C:\\Program Files\\Google\\Chrome\\Application\\chrome.exe', + 'C:\\Program Files (x86)\\Google\\Chrome\\Application\\chrome.exe', + 'C:\\Program Files (x86)\\Microsoft\\Edge\\Application\\msedge.exe', + 'C:\\Program Files\\Microsoft\\Edge\\Application\\msedge.exe', + ], + darwin: [ + '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome', + '/Applications/Microsoft Edge.app/Contents/MacOS/Microsoft Edge', + '/Applications/Chromium.app/Contents/MacOS/Chromium', + ], + linux: [ + '/usr/bin/google-chrome', + '/usr/bin/chromium-browser', + '/usr/bin/chromium', + '/snap/bin/chromium', + ], + }; + for (const p of (candidates[osPlatform] || [])) { + if (fs.existsSync(p)) return p; + } + return null; +} + +async function getBrowser() { + let browserModule, usingCore = false; + try { + browserModule = require('puppeteer-core'); + usingCore = true; + } catch { + try { + browserModule = require('puppeteer'); + } catch { + console.error('Error: Neither puppeteer-core nor puppeteer is installed.'); + console.error('Run: cd scripts && npm install puppeteer-core'); + process.exit(1); + } + } + + const browserPath = findBrowserPath(); + if (usingCore) { + if (!browserPath) { + console.error('Error: puppeteer-core requires a local Chrome/Edge/Chromium.'); + console.error('Set CHROME_PATH env var or install Chrome/Edge/Chromium.'); + process.exit(1); + } + console.log(`Using: puppeteer-core`); + console.log(`Browser: ${browserPath}`); + return browserModule.launch({ + headless: 'new', + executablePath: browserPath, + args: ['--no-sandbox', '--disable-setuid-sandbox'], + }); + } else { + console.log('Using: puppeteer (bundled Chromium)'); + const args = ['--no-sandbox', '--disable-setuid-sandbox']; + if (osPlatform === 'linux') { + args.push('--disable-dev-shm-usage', '--disable-gpu', '--no-zygote'); + } + return browserModule.launch({ headless: 'new', args }); + } +} + +// Main +async function main() { + console.log(`Input: ${inputPath}`); + console.log(`Output: ${outputPath}`); + console.log(`Paper: ${paper.toUpperCase()}`); + console.log(`Theme: ${forcedTheme || 'auto'}`); + console.log(`OS: ${osPlatform} (${osArch})`); + + const bodyHtml = buildHtml(markdown); + const theme = forcedTheme || 'light'; + const mermaidTheme = theme; + + const html = ` + + + + + + + + + + + +${bodyHtml} + + +`; + + const browser = await getBrowser(); + + try { + const page = await browser.newPage(); + await page.setViewport({ width: PAGE_WIDTH, height: 800, deviceScaleFactor: 2 }); + + await page.setContent(html, { waitUntil: 'networkidle0' }); + + // Wait for mermaid to finish rendering + await page.waitForFunction(() => { + const mermaidDivs = document.querySelectorAll('.mermaid'); + if (mermaidDivs.length === 0) return true; + return Array.from(mermaidDivs).every(div => div.getAttribute('data-processed') === 'true' || div.querySelector('svg')); + }, { timeout: 30000 }); + + // Extra wait for font rendering + await sleep(1500); + + const bodyHeight = await page.evaluate(() => document.body.scrollHeight); + + await page.setViewport({ + width: PAGE_WIDTH, + height: Math.max(bodyHeight, 200), + deviceScaleFactor: 2, + }); + + await page.screenshot({ + path: outputPath, + fullPage: true, + type: 'png', + }); + + console.log(`Done: ${outputPath}`); + const stats = fs.statSync(outputPath); + console.log(`Size: ${(stats.size / 1024).toFixed(1)} KB`); + console.log(`Dimensions: ${PAGE_WIDTH} x ${bodyHeight} px (2x scale)`); + } finally { + await browser.close(); + } +} + +main().catch(err => { + console.error('Error:', err.message || err); + process.exit(1); +});