source: branches/java-utils-alignment/src/main/java/de/ugoe/cs/util/console/defaultcommands/CMDexec.java

//   Copyright 2012 Georg-August-Universität Göttingen, Germany
//
//   Licensed 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 de.ugoe.cs.util.console.defaultcommands;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.List;
import java.util.logging.Level;

import de.ugoe.cs.util.console.Command;
import de.ugoe.cs.util.console.CommandExecuter;
import de.ugoe.cs.util.console.Console;

/**
 * <p>
 * Command to execute a batch of {@link Command}s. The batch is defined as a
 * text file, where each line defines one command.
 * </p>
 * 
 * @author Steffen Herbold
 * @version 1.0
 */
public class CMDexec implements Command {

        /*
         * (non-Javadoc)
         * 
         * @see de.ugoe.cs.util.console.Command#run(java.util.List)
         */
        public void run(List<Object> parameters) {
                String script;
                try {
                        script = (String) parameters.get(0);
                } catch (Exception e) {
                        throw new IllegalArgumentException();
                }
                try {
                        String[] commands;
                        File f = new File(script);
                        FileInputStream fis = new FileInputStream(f);
                        InputStreamReader reader = new InputStreamReader(fis, "UTF-8");
                        char[] buffer = new char[(int) f.length()];
                        reader.read(buffer);
                        commands = (new String(buffer)).split("\n");
                        for (String command : commands) {
                            if( !command.trim().startsWith("%")) {
                                Console.traceln(Level.INFO, "Executing \"" + command.trim() + "\"");
                                CommandExecuter.getInstance().exec(command);
                            }
                        }
                        reader.close();
                } catch (FileNotFoundException e) {
                        Console.printerrln(e.getMessage());
                } catch (IOException e) {
                        Console.printerrln(e.getMessage());
                }
        }

        /*
         * (non-Javadoc)
         * 
         * @see databasebuilder.console.commands.Command#help()
         */
        @Override
        public String help() {
                return "exec <filename>";
        }
}