content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  package com.aliyun.openservices.odps.console.commands;
  
  import java.util.List;
  
  import com.aliyun.openservices.odps.console.ExecutionContext;
  import com.aliyun.openservices.odps.console.ODPSConsoleException;
  import com.aliyun.openservices.odps.console.utils.FileUtil;
  
  /**
   * ExecuteFileCommand 只为 -f 参数准备
   *
   * @author zhenhong.gzh
   **/
  public class ExecuteFileCommand extends ExecuteCommand {
  
    public ExecuteFileCommand(String commandText, ExecutionContext context) {
      super(commandText, context);
    }
  
    /**
     * 通过传递的参数，解析出对应的command
     **/
    public static AbstractCommand parse(List<String> optionList, ExecutionContext sessionContext)
        throws ODPSConsoleException {
      String option = "-f";
      if (optionList.contains(option)) {
        if (optionList.indexOf(option) + 1 < optionList.size()) {
  
          int index = optionList.indexOf(option);
          // 创建相应的command列表
          String arg = optionList.get(index + 1);
  
          // 消费掉 -f 及参数
          optionList.remove(optionList.indexOf(option));
          optionList.remove(optionList.indexOf(arg));
  
          if (arg.trim().endsWith(";")) {
            arg = arg.substring(0, arg.lastIndexOf(";"));
          }
          String cmd = FileUtil.getStringFromFile(arg);
  
          // 当文件内容为空时,不再继续执行
          if (cmd.trim().equals("")) {
            return null;
          }
  
          if (!cmd.endsWith(";")) {
            cmd = cmd + ";";
          }
          return new ExecuteFileCommand(cmd, sessionContext);
        }
      }
  
      return null;
    }
  
  }
  