Source Code Cross Referenced for FileArchive.java in  » J2EE » JOnAS-4.8.6 » org » objectweb » jonas_lib » genbase » archive » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » JOnAS 4.8.6 » org.objectweb.jonas_lib.genbase.archive 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**
002:         * JOnAS : Java(TM) OpenSource Application Server
003:         * Copyright (C) 1999-2004 Bull S.A.
004:         * Contact: jonas-team@objectweb.org
005:         *
006:         * This library is free software; you can redistribute it and/or
007:         * modify it under the terms of the GNU Lesser General Public
008:         * License as published by the Free Software Foundation; either
009:         * version 2.1 of the License, or any later version.
010:         *
011:         * This library is distributed in the hope that it will be useful,
012:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014:         * Lesser General Public License for more details.
015:         *
016:         * You should have received a copy of the GNU Lesser General Public
017:         * License along with this library; if not, write to the Free Software
018:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
019:         * USA
020:         *
021:         * --------------------------------------------------------------------------
022:         * $Id: FileArchive.java 5590 2004-10-11 13:16:15Z benoitf $
023:         * --------------------------------------------------------------------------
024:         */package org.objectweb.jonas_lib.genbase.archive;
025:
026:        import java.io.File;
027:        import java.io.FileInputStream;
028:        import java.io.IOException;
029:        import java.io.InputStream;
030:        import java.util.List;
031:        import java.util.Vector;
032:        import java.util.jar.Manifest;
033:
034:        import org.objectweb.jonas_lib.genbase.GenBaseException;
035:
036:        /**
037:         * A <code>FileArchive</code> is a wrapper for directory structured as a jar.
038:         *
039:         * @author Guillaume Sauthier
040:         */
041:        public class FileArchive extends AbsArchive {
042:
043:            /**
044:             * Creates a new FileArchive object.
045:             *
046:             * @param archive directory structured as a jar
047:             *
048:             * @throws GenBaseException When manifest cannot be loaded
049:             */
050:            public FileArchive(File archive) throws GenBaseException {
051:                super (archive);
052:
053:                try {
054:                    File mf = new File(archive, "META-INF" + File.separator
055:                            + "MANIFEST.MF");
056:
057:                    if (mf.exists()) {
058:                        setManifest(new Manifest(new FileInputStream(mf)));
059:                    } else {
060:                        setManifest(new Manifest());
061:                    }
062:                } catch (Exception e) {
063:                    String err = getI18n().getMessage(
064:                            "FileArchive.constr.manifest", getRootFile());
065:                    throw new GenBaseException(err, e);
066:                }
067:            }
068:
069:            /**
070:             * Returns an InputStream corresponding to the given filename.
071:             *
072:             * @param filename file name source of the InputStream
073:             *
074:             * @return the InputStream corresponding to the given filename.
075:             *
076:             * @throws IOException When InputStream corersponding to the given filename
077:             *         cannot be found.
078:             */
079:            public InputStream getInputStream(String filename)
080:                    throws IOException {
081:                File file = (File) getFiles().get(filename);
082:
083:                if (file == null) {
084:                    // filename not found in added files
085:                    // try root search
086:                    file = new File(getRootFile(), filename);
087:
088:                    if (!file.exists()) {
089:                        return null;
090:                    }
091:                }
092:
093:                // file exists (in added files or in original archive)
094:                return new FileInputStream(file);
095:            }
096:
097:            /**
098:             * Returns a List of all files contained in this archive. Original files in
099:             * jar, added Files are all included as String in this Enumeration.
100:             *
101:             * @return a List of all files contained in this archive.
102:             */
103:            public List getContainedFiles() {
104:                List list = new Vector(getFiles().keySet());
105:
106:                // add files of the original archive
107:                traverse("", getRootFile(), list);
108:
109:                return list;
110:            }
111:
112:            /**
113:             * Add all files contained in the given directory into a list.
114:             *
115:             * @param dirName current directory name
116:             * @param base directory where file are listed
117:             * @param map list of filename
118:             */
119:            private static void traverse(String dirName, File base, List map) {
120:                File[] childs = base.listFiles();
121:
122:                // directory exists ?
123:                if (childs != null) {
124:                    for (int i = 0; i < childs.length; i++) {
125:                        if (childs[i].isFile()) {
126:                            // File
127:                            map.add(dirName + childs[i].getName());
128:                        } else {
129:                            // Directory
130:                            traverse(dirName + childs[i].getName()
131:                                    + File.separator, childs[i], map);
132:                        }
133:                    }
134:                }
135:            }
136:
137:            /**
138:             * Returns true if archive is packed or false if archive is unpacked.
139:             *
140:             * @return true if archive is packed or false if archive is unpacked.
141:             */
142:            public boolean isPacked() {
143:                return false;
144:            }
145:        }
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