wkid/bin/wkid-cli.js

CGCS2000 coordinate system definitions library with multiple format support

const { 
  findCoordinateSystemByWkid,
  findCoordinateSystemByName,
  CGCS2000_GEOGRAPHIC,
  CGCS2000_GK_3DEG_NO_ZONE,
  CGCS2000_GK_3DEG_WITH_ZONE,
  CGCS2000_GK_6DEG_NO_ZONE,
  CGCS2000_GK_6DEG_WITH_ZONE
} = require('../dist/wkid.js');

const readline = require('readline');

// 创建readline接口
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout
});

// 显示帮助信息
function showHelp() {
  console.log(`
WKID查询工具
使用方法:
  1. 直接运行此工具，然后按提示输入WKID
  2. node wkid-cli.js <wkid> - 直接查询指定WKID
  3. node wkid-cli.js --help - 显示此帮助信息

支持的WKID范围:
  - 地理坐标系: 4490
  - 3度带不带带号: 4534-4554
  - 3度带带带号: 4513-4533
  - 6度带不带带号: 4502-4512
  - 6度带带带号: 4491-4501
  `);
}

// 格式化显示坐标系信息
function displayCoordinateSystem(cs) {
  if (!cs) {
    console.log('未找到对应的坐标系定义');
    return;
  }

  console.log(`
坐标系信息:
  WKID: ${cs.wkid}
  名称: ${cs.name}
  OGC WKT: ${cs.ogcWkt}
  ESRI WKT: ${cs.esriWkt}
  PROJ4: ${cs.proj4}
  `);
}

// 交互式查询
function interactiveQuery() {
  console.log('WKID坐标系查询工具 (输入 "quit" 或 "exit" 退出)');
  console.log('支持的WKID范围: 4490-4554');
  
  const prompt = () => {
    rl.question('\n请输入WKID: ', (input) => {
      const command = input.trim().toLowerCase();
      
      if (command === 'quit' || command === 'exit') {
        console.log('再见!');
        rl.close();
        return;
      }
      
      if (command === 'help') {
        showHelp();
        prompt();
        return;
      }
      
      const wkid = parseInt(input);
      
      if (isNaN(wkid)) {
        console.log('请输入有效的数字WKID');
        prompt();
        return;
      }
      
      const result = findCoordinateSystemByWkid(wkid);
      displayCoordinateSystem(result);
      prompt();
    });
  };
  
  prompt();
}

// 主函数
function main() {
  const args = process.argv.slice(2);
  
  // 显示帮助
  if (args.includes('--help') || args.includes('-h')) {
    showHelp();
    return;
  }
  
  // 直接查询WKID
  if (args.length > 0) {
    const wkid = parseInt(args[0]);
    
    if (isNaN(wkid)) {
      console.log('错误: 请输入有效的数字WKID');
      process.exit(1);
    }
    
    const result = findCoordinateSystemByWkid(wkid);
    displayCoordinateSystem(result);
    return;
  }
  
  // 交互式查询
  interactiveQuery();
}

// 运行主函数
main();