386 lines
9.7 KiB
Java
386 lines
9.7 KiB
Java
/***********************************************************************
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*
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* Copyright (C) 2006 Novell, Inc. All Rights Reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; version 2.1
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* of the License.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, Novell, Inc.
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*
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* To contact Novell about this file by physical or electronic mail,
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* you may find current contact information at www.novell.com.
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*
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* Author: Greg Richardson <grichardson@novell.com>
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*
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***********************************************************************/
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import java.io.*;
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import java.util.*;
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/**
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* Summary description for DeleteFile
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*/
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public class DeleteFile
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{
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final static int ERROR_NO_ERROR = 0;
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final static int ERROR_INVALID_NUMBER_OF_PARAMS = -1;
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final static int ERROR_BAD_FILE_PARAM = -2;
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final static int ERROR_IO_EXCEPTION = -3;
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final static int ERROR_FILE_PARAM_REPEATED = -4;
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final static int ERROR_FILTER_PARAM_REPEATED = -5;
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final static int ERROR_UNKNOWN_PARAMETER = -6;
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final static int ERROR_MISSING_FILE_PARAM = -7;
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final static int ERROR_FILTER_ON_NON_DIRECTORY = -8;
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final static int ERROR_BAD_PROPERTY_FILE_PARAM = -9;;
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final static int ERROR_EXCEPTION = -10;
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final static String FILE_KEY = "file=";
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final static String FILTER_KEY = "filter=";
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//RandomAccessFile raf;
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int rc;
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String sFile;
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String sFilter;
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public static void main(String[] args)
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{
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DeleteFile p = new DeleteFile(args);
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System.exit(p.rc);
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}
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DeleteFile(String[] args)
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{
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rc = ERROR_NO_ERROR;
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sFile = null;
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sFilter = null;
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try
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{
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//raf = new RandomAccessFile(new File("c:\\test8.log"), "rw");
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//raf.seek(raf.length());
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// Process the arguments
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if (ERROR_NO_ERROR == (rc = processArgs(args)))
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{
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rc = doDelete();
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}
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}
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catch (Exception e)
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{
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rc = ERROR_EXCEPTION;
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}
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finally
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{
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try
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{
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log(rc);
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//raf.close();
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}
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catch (Exception e1)
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{
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}
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}
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}
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int processArgs(String[] argsOld)
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{
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String sProperties;
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File fileInstallDir = null;
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int iEquals;
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String sKey;
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String sValue;
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int iOld;
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int i;
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String args[] = new String[argsOld.length];
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int iNew;
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log("Original arg count " + argsOld.length);
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for (i = 0; i < argsOld.length; i++)
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{
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log("Arg " + i + " = " + argsOld[i] + "\r\n");
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}
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// Validate the number of parameters
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if (args.length < 1)
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{
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return ERROR_INVALID_NUMBER_OF_PARAMS;
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}
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iNew = -1;
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for (iOld = 0; iOld < argsOld.length; iOld++)
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{
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if (0 <= argsOld[iOld].indexOf("="))
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{
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iNew++;
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args[iNew] = argsOld[iOld];
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for (i = iOld + 1; i < argsOld.length && (-1 == argsOld[i].indexOf("=")); i++)
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{
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args[iNew] += " " + argsOld[i];
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}
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}
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}
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log("New arg count " + args.length);
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for (i = 0; i < args.length; i++)
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{
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if (null == args[i])
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{
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continue;
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}
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log("arg[" + i + "] = " +args[i]);
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// is this the file to delete param?
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if (args[i].startsWith(FILE_KEY))
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{
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// Have we already processed a file paramter?
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if (null != sFile)
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{
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return ERROR_FILE_PARAM_REPEATED;
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}
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// Make sure it is more the param tag
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if (args[i].length() <= FILE_KEY.length())
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{
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return ERROR_BAD_FILE_PARAM;
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}
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sFile = args[i].substring(FILE_KEY.length()).trim();
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}
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// is this the filter param?
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else if (args[i].startsWith(FILTER_KEY))
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{
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// Have we already processed a filter paramter?
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if (null != sFilter)
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{
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return ERROR_FILTER_PARAM_REPEATED;
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}
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// Make sure it is more than the param tag
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if (args[i].length() <= FILTER_KEY.length())
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{
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return ERROR_BAD_PROPERTY_FILE_PARAM;
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}
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sFilter = args[i].substring(FILTER_KEY.length()).trim();
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}
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// Handle additional parameters
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else
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{
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return ERROR_UNKNOWN_PARAMETER;
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}
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}
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// Make sure we got a file
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if (null == sFile)
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{
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return ERROR_MISSING_FILE_PARAM;
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}
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// Note: the filter parameter is optional, if present the file is assumed to be a directory
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return ERROR_NO_ERROR;
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}
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int doDelete()
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{
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File file = new File(sFile);
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log("Attempt to delete: " + sFile);
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// If the file is already gone - we are happy.
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if (!file.exists())
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{
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log("File did not exist: " + sFile);
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return ERROR_NO_ERROR;
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}
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// If a filter was passed in but the file is not a directory...
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if (null != sFilter)
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{
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log("there is a filter: + sFilter");
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// The file is not a directory - we wont try to apply the filter
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if (!file.isDirectory())
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{
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log("file is not a directory");
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return ERROR_FILTER_ON_NON_DIRECTORY;
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}
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// The file is a directory
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else
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{
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log("file is a directory");
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// Delete the children that match the template
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deleteFiles(file);
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// Attempt to delete the directory
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deleteDirectory(file);
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}
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}
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else
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{
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if (!file.isDirectory())
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{
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log("Delete file: " + sFile);
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file.delete();
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}
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else
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{
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deleteDirectory(file);
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}
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}
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return ERROR_NO_ERROR;
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}
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void deleteFiles(File file)
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{
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File fileDelete;
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int i;
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log("attempting to delete file");
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// Get the children of this directory
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File[] rgFile = file.listFiles(
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new FileFilter()
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{
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public boolean accept(File f)
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{
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if (null == sFilter) return true;
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log("file " + f.getName() + " matches filter " + sFilter + " : " + (-1 != f.getName().indexOf(sFilter))) ;
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return (-1 != f.getName().indexOf(sFilter));
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}
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});
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log(file.getAbsolutePath() + " has " + rgFile.length + " children that match the filter: " + sFilter);
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// Attempt to delete each child file
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for (i = 0; i < rgFile.length; i++)
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{
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if (rgFile[i].isDirectory())
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{
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deleteDirectory(rgFile[i]);
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}
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else
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{
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log("Delete file: " + rgFile[i].getAbsolutePath());
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rgFile[i].delete();
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}
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}
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}
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void deleteDirectory(File file)
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{
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File fileDelete;
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int i;
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log("Delete directory: " + file.getAbsolutePath());
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// Get the children of this directory
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File[] rgFile = file.listFiles();
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log(file.getAbsolutePath() + " has " + rgFile.length + " children");
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// Delete empty child directories
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for (i = 0; i < rgFile.length; i++)
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{
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if (rgFile[i].isDirectory())
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{
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deleteDirectory(rgFile[i]);
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}
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}
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// Delete this directory if it is empty
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rgFile = file.listFiles();
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if (rgFile.length == 0)
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{
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log("Delete file: " + file.getAbsolutePath());
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file.delete();
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}
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}
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void log(int err)
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{
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log(err, null);
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}
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void log(int err, String s)
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{
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String sMessage = "";
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switch (err)
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{
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case ERROR_NO_ERROR:
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sMessage = "No error";
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break;
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case ERROR_INVALID_NUMBER_OF_PARAMS:
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sMessage = "Invalid number of parameters: 1 expected";
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break;
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case ERROR_BAD_FILE_PARAM:
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sMessage = "Bad file parameter";
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break;
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case ERROR_FILE_PARAM_REPEATED:
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sMessage = "File parameter repeated";
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break;
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case ERROR_FILTER_PARAM_REPEATED:
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sMessage = "Filter parameter repeated";
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break;
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case ERROR_UNKNOWN_PARAMETER:
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sMessage = "Unknown parameter: ";
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break;
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case ERROR_MISSING_FILE_PARAM:
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sMessage = "Missing file parameter";
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break;
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case ERROR_FILTER_ON_NON_DIRECTORY:
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sMessage = "Filter parameter of non-directory file";
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break;
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case ERROR_BAD_PROPERTY_FILE_PARAM:
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sMessage = "Bad property file parameter";
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break;
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case ERROR_IO_EXCEPTION:
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sMessage = "IOException ";
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break;
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case ERROR_EXCEPTION:
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sMessage = "Exception ";
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break;
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default:
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sMessage = "Unknown error: " + err;
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break;
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}
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if (null != s)
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{
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sMessage = sMessage + s;
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}
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log(sMessage);
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}
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void log(String s)
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{
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/*
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try
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{
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raf.writeUTF(this.getClass().getName() + ": " + s + "\r\n");
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}
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catch (IOException ioe)
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{
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}
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*/
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}
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}
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