feat: 新增Markdown转DrawIO、示例数据生成及表注释支持

- mysql.js 新增表注释查询和 generateSampleDataXML 生成示例数据表格
- 输出目录从 xml/ 改为 tableStructureXml/ 和 sampleDataXml/
- 新增 mdToDrawio.js 支持将 Markdown 表格转换为 Draw.io XML
- package.json 新增 md2drawio 脚本
- 完善 README.md 命令说明和使用方法
- 新增 CLAUDE.md 项目指引
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

CLAUDE.md

+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+Node.js CLI utility that generates Draw.io (diagrams.net) XML files from database table schemas or Markdown tables. Supports MySQL, PostgreSQL, and Markdown-to-Draw.io conversion. Queries `information_schema` to extract column metadata, then outputs mxGraph XML importable into Draw.io.
+
+## Commands
+
+```bash
+npm install          # Install dependencies (mysql2, pg)
+npm run dev          # Run MySQL version (interactive CLI)
+npm run mysql        # Same as dev
+npm run pgsql        # Run PostgreSQL version (interactive CLI)
+npm run md2drawio    # Convert Markdown table file to Draw.io XML
+```
+
+No test suite or linter is configured.
+
+## Architecture
+
+Three entry points:
+
+- `mysql.js` — MySQL via `mysql2/promise`, queries `information_schema.COLUMNS`. Generates both table-structure XML and sample-data XML.
+- `postgreSQL.js` — PostgreSQL via `pg`, joins `information_schema.columns` with `pg_catalog.pg_description` for comments. Generates table-structure XML only.
+- `mdToDrawio.js` — Parses a Markdown table file (pipe-delimited) and generates a Draw.io table XML.
+
+### Core Flow (mysql.js / postgreSQL.js)
+1. **Interactive Input**: readline prompts for comma-separated table names (supports Chinese comma `，`)
+2. **Name Processing**: rejects Chinese characters, converts camelCase → snake_case
+3. **Database Query**: fetches column names + comments from information_schema
+4. **XML Generation**: `generateXMLWithTableColumns` builds mxGraph XML with swimlane container and per-column cells. Audit fields (created_at, updated_at, deleted_at, etc.) are styled gray. MySQL version also calls `generateSampleDataXML` to produce a horizontal table layout with header row and empty data row.
+
+### Output Directories
+- `tableStructureXml/` — swimlane-style table structure diagrams (mysql.js writes here; postgreSQL.js also writes here)
+- `sampleDataXml/` — horizontal table-layout diagrams for sample data (mysql.js `generateSampleDataXML` and mdToDrawio.js write here)
+
+### Database Configuration
+Credentials are hardcoded at the top of each database file. Modify directly in source to point at different databases.
+
+### Known Constraints
+- `&` in column comments breaks XML output (no escaping)
+- Table names must not contain Chinese characters
+- Fixed geometry: x=340, y=140, width=260 for structure XML
+- PostgreSQL version hardcodes schema to `public`
+- PostgreSQL version does not generate sample-data XML
+
+## Language
+README and console messages are in Chinese. Code uses English variable/function names.

README.md

 ### 本地运行
 node v18
-npm run dev
+```bash
+npm install
+```
+
+### 可用命令
+
+| 命令 | 说明 |
+| --- | --- |
+| `npm run dev` | 运行 MySQL 版本，交互式输入表名，生成表结构 XML 和示例数据 XML |
+| `npm run mysql` | 同 `npm run dev` |
+| `npm run pgsql` | 运行 PostgreSQL 版本，交互式输入表名，生成表结构 XML |
+| `npm run md2drawio` | 将 Markdown 表格文件转换为 Draw.io XML |
+
 ### 使用方法：
-1. 配置数据源，见mysql.js
-2. npm run dev启动后，输入目标表名，支持多个，按英文逗号拼接
-3. 运行成功后，输出xml文件在xml文件夹下，打开xml文件将内容粘贴到drawio编辑器中
+1. 配置数据源：MySQL 见 `mysql.js` 顶部，PostgreSQL 见 `postgreSQL.js` 顶部
+2. 运行对应命令后，输入目标表名，支持多个，按英文逗号或中文逗号拼接
+3. 运行成功后，表结构 XML 输出在 `tableStructureXml/` 目录下，示例数据 XML 输出在 `sampleDataXml/` 目录下
+4. 打开 XML 文件将内容粘贴到 Draw.io 编辑器中
+5. `npm run md2drawio` 需输入 Markdown 文件路径，输出在 `sampleDataXml/` 目录下
+
 ### 注意事项：
-1. 生成的xml文件中，不能有&符号。常见问题是这个符号会出现在字段注释中。
-2. 
+1. 生成的 XML 文件中，不能有 `&` 符号。常见问题是这个符号会出现在字段注释中。
+2. 表名不能包含中文字符。
\ No newline at end of file

mdToDrawio.js

+const fs = require('fs');
+const readline = require('readline');
+
+const rl = readline.createInterface({
+  input: process.stdin,
+  output: process.stdout,
+});
+
+function askQuestion(query) {
+  return new Promise((resolve) => {
+    rl.question(query, resolve);
+  });
+}
+
+function parseMdTable(content) {
+  const lines = content.trim().split('\n');
+  const rows = [];
+  for (const line of lines) {
+    const trimmed = line.trim();
+    if (!trimmed) continue;
+    // Skip separator rows (| --- | --- |)
+    if (/^\|[\s\-:|]+\|$/.test(trimmed)) continue;
+    const cells = trimmed
+      .split('|')
+      .map((c) => c.trim())
+      .filter((c) => c !== '');
+    if (cells.length > 0) {
+      rows.push(cells);
+    }
+  }
+  return rows;
+}
+
+function generateDrawioTableXML(rows) {
+  if (rows.length === 0) return '';
+
+  const numCols = rows[0].length;
+  const numRows = rows.length;
+  const colWidth = 120;
+  const rowHeight = 37;
+  const totalWidth = numCols * colWidth;
+  const totalHeight = numRows * rowHeight;
+
+  let cellId = 3;
+
+  let xml = `<mxGraphModel>
+    <root>
+        <mxCell id="0"/>
+        <mxCell id="1" parent="0"/>
+        <mxCell id="2" value="" style="shape=table;startSize=0;container=1;collapsible=0;childLayout=tableLayout;fontSize=12;" vertex="1" parent="1">
+            <mxGeometry x="340" y="140" width="${totalWidth}" height="${totalHeight}" as="geometry"/>
+        </mxCell>`;
+
+  rows.forEach((row, rowIndex) => {
+    const rowId = cellId++;
+    const y = rowIndex * rowHeight;
+    xml += `
+        <mxCell id="${rowId}" value="" style="shape=tableRow;horizontal=0;startSize=0;swimlaneHead=0;swimlaneBody=0;strokeColor=inherit;top=0;left=0;bottom=0;right=0;collapsible=0;dropTarget=0;fillColor=none;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;fontSize=12;" vertex="1" parent="2">
+            <mxGeometry y="${y}" width="${totalWidth}" height="${rowHeight}" as="geometry"/>
+        </mxCell>`;
+
+    row.forEach((cell, colIndex) => {
+      const id = cellId++;
+      const x = colIndex * colWidth;
+      xml += `
+        <mxCell id="${id}" value="${cell}" style="shape=partialRectangle;html=1;whiteSpace=wrap;connectable=0;strokeColor=inherit;overflow=hidden;fillColor=none;top=0;left=0;bottom=0;right=0;pointerEvents=1;fontSize=12;" vertex="1" parent="${rowId}">
+            <mxGeometry x="${x}" width="${colWidth}" height="${rowHeight}" as="geometry">
+                <mxRectangle width="${colWidth}" height="${rowHeight}" as="alternateBounds"/>
+            </mxGeometry>
+        </mxCell>`;
+    });
+  });
+
+  xml += `
+    </root>
+</mxGraphModel>`;
+
+  return xml;
+}
+
+async function main() {
+  try {
+    const mdFile = await askQuestion('Enter markdown file path: ');
+    if (!mdFile) {
+      console.log('文件路径不得为空！');
+      return;
+    }
+
+    const content = fs.readFileSync(mdFile.trim(), 'utf-8');
+    const rows = parseMdTable(content);
+
+    if (rows.length === 0) {
+      console.error('未找到表格数据。');
+      return;
+    }
+
+    console.log(`解析到 ${rows.length} 行, ${rows[0].length} 列`);
+
+    const outputDir = 'sampleDataXml';
+    if (!fs.existsSync(outputDir)) {
+      fs.mkdirSync(outputDir, { recursive: true });
+    }
+
+    const baseName = mdFile.trim().replace(/^.*[\\/]/, '').replace(/\.md$/, '');
+    const outputFile = `${outputDir}/${baseName}.xml`;
+    fs.writeFileSync(outputFile, generateDrawioTableXML(rows));
+    console.log(`XML 文件已生成: ${outputFile}`);
+  } catch (error) {
+    console.error('Error:', error.message);
+  } finally {
+    rl.close();
+  }
+}
+
+main();
\ No newline at end of file

mysql.js

@@ -21,7 +21,7 @@ async function main() {
     const port = '3306';
     const user = 'root';
     const password = '12345678';
-    const database = 'teaching';
+    const database = 'hospital';
 
     // const host = '10.10.10.132';
     // const port = '3306';
@@ -83,12 +83,20 @@ async function main() {
         processedTableName,
       ]);
 
+      // Get table comment
+      const [tableInfo] = await connection.execute(
+        `SELECT TABLE_COMMENT FROM information_schema.TABLES WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ?`,
+        [database, processedTableName]
+      );
+      const tableComment = tableInfo[0]?.TABLE_COMMENT || '';
+
       if (rows.length === 0) {
         console.error(
           `***** No results found for table ${processedTableName}. *****`
         );
       } else {
-        generateXMLWithTableColumns(processedTableName, rows);
+        generateXMLWithTableColumns(processedTableName, rows, tableComment);
+        generateSampleDataXML(processedTableName, rows, tableComment);
         console.log(
           `===== XML file generated successfully for ${processedTableName}! =====`
         );
@@ -105,13 +113,14 @@ async function main() {
   }
 }
 
-function generateXMLWithTableColumns(tableName, rows) {
+function generateXMLWithTableColumns(tableName, rows, tableComment) {
+  const label = tableComment ? `${tableName} 
${tableComment}` : tableName;
   // XML template start with the table name in the label
   let xmlContent = `<mxGraphModel>
     <root>
         <mxCell id="0"/>
         <mxCell id="1" parent="0"/>
-        <object label="${tableName}" id="2">
+        <object label="${label}" id="2">
             <mxCell style="swimlane;fontStyle=1;childLayout=stackLayout;horizontal=1;startSize=30;horizontalStack=0;resizeParent=1;resizeParentMax=0;resizeLast=0;collapsible=1;marginBottom=0;fillColor=#dae8fc;strokeColor=#6c8ebf;" vertex="1" parent="1">
                 <mxGeometry x="340" y="140" width="260" height="${
                   30 + rows.length * 30
@@ -155,7 +164,71 @@ function generateXMLWithTableColumns(tableName, rows) {
     </root>
 </mxGraphModel>`;
   // console.log(xmlContent);
-  fs.writeFileSync(`xml/${tableName}_diagram.xml`, xmlContent);
+  fs.writeFileSync(`tableStructureXml/${tableName}.xml`, xmlContent);
+}
+
+function generateSampleDataXML(tableName, rows, tableComment) {
+  const label = tableComment ? `${tableName} ${tableComment}-示例数据` : `${tableName}-示例数据`;
+  const colWidth = 120;
+  const rowHeight = 40;
+  const titleHeight = 30;
+  const totalWidth = rows.length * colWidth;
+  const totalHeight = titleHeight + rowHeight * 2;
+
+  let cellId = 3;
+
+  let xml = `<mxGraphModel>
+    <root>
+        <mxCell id="0"/>
+        <mxCell id="1" parent="0"/>
+        <mxCell id="2" value="${label}" style="shape=table;startSize=${titleHeight};container=1;collapsible=0;childLayout=tableLayout;strokeColor=#6c8ebf;fontSize=12;fontStyle=1;fillColor=#dae8fc;" vertex="1" parent="1">
+            <mxGeometry x="340" y="140" width="${totalWidth}" height="${totalHeight}" as="geometry"/>
+        </mxCell>`;
+
+  // Header row
+  const headerRowId = cellId++;
+  xml += `
+        <mxCell id="${headerRowId}" value="" style="shape=tableRow;horizontal=0;startSize=0;swimlaneHead=0;swimlaneBody=0;strokeColor=inherit;top=0;left=0;bottom=0;right=0;collapsible=0;dropTarget=0;fillColor=none;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;fontSize=12;" vertex="1" parent="2">
+            <mxGeometry y="${titleHeight}" width="${totalWidth}" height="${rowHeight}" as="geometry"/>
+        </mxCell>`;
+
+  // Header cells
+  rows.forEach((row, index) => {
+    const id = cellId++;
+    xml += `
+        <mxCell id="${id}" value="${row.COLUMN_NAME}" style="shape=partialRectangle;html=1;whiteSpace=wrap;connectable=0;strokeColor=#000000;overflow=hidden;fillColor=none;top=0;left=0;bottom=0;right=0;pointerEvents=1;fontSize=12;fontStyle=1" vertex="1" parent="${headerRowId}">
+            <mxGeometry x="${index * colWidth}" width="${colWidth}" height="${rowHeight}" as="geometry">
+                <mxRectangle width="${colWidth}" height="${rowHeight}" as="alternateBounds"/>
+            </mxGeometry>
+        </mxCell>`;
+  });
+
+  // Empty data row
+  const dataRowId = cellId++;
+  xml += `
+        <mxCell id="${dataRowId}" value="" style="shape=tableRow;horizontal=0;startSize=0;swimlaneHead=0;swimlaneBody=0;strokeColor=inherit;top=0;left=0;bottom=0;right=0;collapsible=0;dropTarget=0;fillColor=none;points=[[0,0.5],[1,0.5]];portConstraint=eastwest;fontSize=16;" vertex="1" parent="2">
+            <mxGeometry y="${titleHeight + rowHeight}" width="${totalWidth}" height="${rowHeight}" as="geometry"/>
+        </mxCell>`;
+
+  // Empty data cells
+  rows.forEach((_row, index) => {
+    const id = cellId++;
+    xml += `
+        <mxCell id="${id}" value="" style="shape=partialRectangle;html=1;whiteSpace=wrap;connectable=0;strokeColor=inherit;overflow=hidden;fillColor=none;top=0;left=0;bottom=0;right=0;pointerEvents=1;fontSize=12;" vertex="1" parent="${dataRowId}">
+            <mxGeometry x="${index * colWidth}" width="${colWidth}" height="${rowHeight}" as="geometry">
+                <mxRectangle width="${colWidth}" height="${rowHeight}" as="alternateBounds"/>
+            </mxGeometry>
+        </mxCell>`;
+  });
+
+  xml += `
+    </root>
+</mxGraphModel>`;
+
+  if (!fs.existsSync('sampleDataXml')) {
+    fs.mkdirSync('sampleDataXml', { recursive: true });
+  }
+  fs.writeFileSync(`sampleDataXml/${tableName}.xml`, xml);
 }
 
 main();

package.json

@@ -6,7 +6,8 @@
   "scripts": {
     "dev": "node mysql.js",
     "mysql": "node mysql.js",
-    "pgsql": "node postgreSQL.js"
+    "pgsql": "node postgreSQL.js",
+    "md2drawio": "node mdToDrawio.js"
   },
   "dependencies": {
     "mysql2": "^3.6.0",

postgreSQL.js

@@ -171,7 +171,7 @@ function generateXMLWithTableColumns(tableName, rows) {
     </root>
 </mxGraphModel>`;
   // console.log(xmlContent);
-  fs.writeFileSync(`xml/${tableName}_diagram.xml`, xmlContent);
+  fs.writeFileSync(`tableStructureXml/${tableName}.xml`, xmlContent);
 }
 
 main();

table.md

+| source_type | 含义       | 说明                                               |
+| ----------- | ---------- | -------------------------------------------------- |
+| LAB         | 检验结果   | 从检验结果表取值                                   |
+| VITAL       | 体征记录   | 从体征/生命体征表取值                              |
+| DIAGNOSIS   | 诊断       | 从诊断表取列表                                     |
+| MEDICATION  | 用药       | 从用药记录表取列表                                 |
+| PATIENT     | 基本信息   | 从患者主表取值                                     |
+| HISTORY     | 病史标签   | 从病史标签表取列表                                 |
+| CONTEXT     | 上下文传入 | 不查数据库，由触发事件直接传入（如拟开药物）       |
+| COMPUTED    | 计算字段   | 由其他变量计算得出（如 AGE = 当前日期 - 出生日期） |
\ No newline at end of file