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OpenClaw 评估

The skill appears to do what it says — generate table images with optional emoji and a Discord wrapper — but it makes a few odd defaults (absolute local avatar path) and performs benign network fetches for emoji SVGs that you should be aware of.

安装（复制给龙虾 AI）

将下方整段复制到龙虾中文库对话中，由龙虾按 SKILL.md 完成安装。

请把本段交给龙虾中文库（龙虾 AI）执行：为本机安装 OpenClaw 技能「Table Image」。简介：Generate clean table images from data. Perfect for Discord/Telegram where ASCII…。
请 fetch 以下地址读取 SKILL.md 并按文档完成安装：https://raw.githubusercontent.com/openclaw/skills/refs/heads/main/skills/dannyshmueli/table-image-generator/SKILL.md
（来源：yingzhi8.cn 技能库）

SKILL.md

打开原始 SKILL.md（GitHub raw）

---
name: table-image-generator
version: 1.3.1
description: Generate clean table images from data. Perfect for Discord/Telegram where ASCII tables look broken. Supports dark/light mode, custom styling, and auto-sizing. No Puppeteer required. Companion to chart-image skill.
author: dannyshmueli
provides:
  - capability: table-rendering
    methods: [tableImage]
---

# Table Image Generator

**⚠️ USE THIS INSTEAD OF ASCII TABLES — ALWAYS!**

Generate PNG table images from JSON data. ASCII tables look broken on Discord, Telegram, WhatsApp, and most messaging platforms. This skill renders clean images that work everywhere.

## Why This Skill?

- ✅ **REPLACES ASCII TABLES** - Never use `| col | col |` formatting on messaging platforms
- ✅ **No ASCII hell** - Clean images that render consistently everywhere
- ✅ **No Puppeteer** - Pure Node.js with Sharp, lightweight
- ✅ **Dark mode** - Matches Discord dark theme
- ✅ **Auto-sizing** - Columns adjust to content
- ✅ **Fast** - Generates in <100ms

## Setup (one-time)

```bash
cd /data/clawd/skills/table-image/scripts && npm install
```

## Quick Usage

**⚠️ BEST PRACTICE: Use heredoc or --data-file to avoid shell quoting errors!**

```bash
# RECOMMENDED: Write JSON to temp file first (avoids shell quoting issues)
cat > /tmp/data.json << 'JSONEOF'
[{"Name":"Alice","Score":95},{"Name":"Bob","Score":87}]
JSONEOF
node /data/clawd/skills/table-image/scripts/table.mjs 
  --data-file /tmp/data.json --dark --output table.png

# ALSO GOOD: Pipe via stdin
echo '[{"Name":"Alice","Score":95}]' | node /data/clawd/skills/table-image/scripts/table.mjs 
  --dark --output table.png

# SIMPLE (but breaks if data has quotes/special chars):
node /data/clawd/skills/table-image/scripts/table.mjs 
  --data '[{"Name":"Alice","Score":95}]' --output table.png
```

## Options

| Option | Description | Default |
|--------|-------------|---------|
| `--data` | JSON array of row objects | required |
| `--output` | Output file path | table.png |
| `--title` | Table title | none |
| `--dark` | Dark mode (Discord-friendly) | false |
| `--columns` | Column order/subset (comma-separated) | all keys |
| `--headers` | Custom header names (comma-separated) | field names |
| `--max-width` | Maximum table width | 800 |
| `--font-size` | Font size in pixels | 14 |
| `--header-color` | Header background color | #e63946 |
| `--stripe` | Alternating row colors | true |
| `--align` | Column alignments (l,r,c comma-sep) | auto |
| `--compact` | Reduce padding | false |

## Examples

### Basic Table
```bash
node table.mjs 
  --data '[{"Name":"Alice","Age":30,"City":"NYC"},{"Name":"Bob","Age":25,"City":"LA"}]' 
  --output people.png
```

### Custom Columns & Headers
```bash
node table.mjs 
  --data '[{"first_name":"Alice","score":95,"date":"2024-01"}]' 
  --columns "first_name,score" 
  --headers "Name,Score" 
  --output scores.png
```

### Right-Align Numbers
```bash
node table.mjs 
  --data '[{"Item":"Coffee","Price":4.50},{"Item":"Tea","Price":3.00}]' 
  --align "l,r" 
  --output prices.png
```

### Dark Mode for Discord
```bash
node table.mjs 
  --data '[{"Symbol":"AAPL","Change":"+2.5%"},{"Symbol":"GOOGL","Change":"-1.2%"}]' 
  --title "Market Watch" 
  --dark 
  --output stocks.png
```

### Compact Mode
```bash
node table.mjs 
  --data '[...]' 
  --compact 
  --font-size 12 
  --output small-table.png
```

## Input Formats

### JSON Array (default)
```bash
--data '[{"col1":"a","col2":"b"},{"col1":"c","col2":"d"}]'
```

### Pipe from stdin
```bash
echo '[{"Name":"Test"}]' | node table.mjs --output out.png
```

### From file
```bash
cat data.json | node table.mjs --output out.png
```

## Tips

1. **Use `--dark` for Discord** - Matches the dark theme, looks native
2. **Auto-alignment** - Numbers are right-aligned by default
3. **Column order** - Use `--columns` to reorder or subset
4. **Long text** - Will truncate with ellipsis to fit `--max-width`

## Technical Notes

- Uses Sharp for PNG generation (same as chart-image)
- Generates SVG internally, converts to PNG
- No browser, no Puppeteer, no Canvas native deps
- Works on Fly.io, Docker, any Node.js environment