function sortContent() {
    	isM3U=true;    //下载为.txt
      var inputText = document.getElementById('myInput').value;
      var lines = inputText.split('\n');
      lines = lines.filter(line => line.trim()!== '');      // 去除空行
      lines.sort();      // 对行进行排序
      var sortedText = lines.join('\n');      // 重新组合成
      document.getElementById('myOutput').value = sortedText;      // 输出文本
    }
    
    function convertToBase64() {
    	isM3U=true;    //下载为.txt
      var sortedText = document.getElementById('myInput').value;
      var encoded = btoa(unescape(encodeURIComponent(sortedText)));
      document.getElementById('myOutput').value = encoded;
    }
    
   function decodeBase64() {
        	isM3U=true;    //下载为.txt
      var base64Text = document.getElementById('myInput').value;
      try {
        var decoded = decodeURIComponent(escape(atob(base64Text)));
        document.getElementById('myOutput').value = decoded;
      } catch (error) {
        document.getElementById('myOutput').value = '解码失败，请检查输入的 Base64 编码是否正确';
      }
    }