001: /*
002: * $Header: /export/home/cvsroot/MyPersonalizerRepository/MyPersonalizer/Subsystems/Kernel/Sources/es/udc/mypersonalizer/kernel/log/LogFilenameFilter.java,v 1.1.1.1 2004/03/25 12:08:38 fbellas Exp $
003: * $Revision: 1.1.1.1 $
004: * $Date: 2004/03/25 12:08:38 $
005: *
006: * =============================================================================
007: *
008: * Copyright (c) 2003, The MyPersonalizer Development Group
009: * (http://www.tic.udc.es/~fbellas/mypersonalizer/index.html) at
010: * University Of A Coruna
011: * All rights reserved.
012: *
013: * Redistribution and use in source and binary forms, with or without
014: * modification, are permitted provided that the following conditions are met:
015: *
016: * - Redistributions of source code must retain the above copyright notice,
017: * this list of conditions and the following disclaimer.
018: *
019: * - Redistributions in binary form must reproduce the above copyright notice,
020: * this list of conditions and the following disclaimer in the documentation
021: * and/or other materials provided with the distribution.
022: *
023: * - Neither the name of the University Of A Coruna nor the names of its
024: * contributors may be used to endorse or promote products derived from
025: * this software without specific prior written permission.
026: *
027: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
028: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
029: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
030: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
031: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
032: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
033: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
034: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
035: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
036: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
037: * POSSIBILITY OF SUCH DAMAGE.
038: *
039: */
040:
041: package es.udc.mypersonalizer.kernel.log;
042:
043: import java.io.File;
044: import java.io.FilenameFilter;
045:
046: /**
047: * This class allows filtering the log files in a directory that were
048: * constructed according to a naming convention. Log files are constructed
049: * by using a root file name. Example: if the log file was "mypersonalizer.log"
050: * then the root file name would be "mypersonalizer.log" and log files that
051: * would follow the naming convention are "mypersonalizer.log.1",
052: * "mypersonalizer.log.2", etc.
053: *
054: * @version $Revision: 1.1.1.1 $ $Date: 2004/03/25 12:08:38 $
055: * @since 1.0
056: */
057: public class LogFilenameFilter implements FilenameFilter {
058:
059: /** The directory where files must reside. */
060: private File directory = null;
061:
062: /** The root file name. */
063: private String rootFileName = null;
064:
065: /**
066: * Constructs an instance of this class.
067: *
068: * @param directory the directory where files must reside
069: * @param rootFileName the root file name
070: */
071: public LogFilenameFilter(File directory, String rootFileName) {
072: this .directory = directory;
073: this .rootFileName = rootFileName + ".";
074: }
075:
076: public boolean accept(File dir, String name) {
077: int matches = 0;
078:
079: if (dir == null) {
080: if (directory == null) { // both directories are null
081: matches++;
082: }
083:
084: } else {
085: if (dir.equals(directory)) { // equal directories
086: matches++;
087: }
088: }
089:
090: if (name.startsWith(rootFileName)) {
091: matches++;
092: }
093:
094: if (matches == 2) {
095: return true;
096: }
097:
098: return false;
099: }
100:
101: }
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