001    /**
002     * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.zip;
016    
017    import com.liferay.portal.kernel.log.Log;
018    import com.liferay.portal.kernel.log.LogFactoryUtil;
019    import com.liferay.portal.kernel.util.FileUtil;
020    import com.liferay.portal.kernel.util.StringPool;
021    import com.liferay.portal.kernel.util.Validator;
022    import com.liferay.portal.kernel.zip.ZipReader;
023    
024    import de.schlichtherle.io.ArchiveBusyWarningException;
025    import de.schlichtherle.io.ArchiveDetector;
026    import de.schlichtherle.io.ArchiveException;
027    import de.schlichtherle.io.DefaultArchiveDetector;
028    import de.schlichtherle.io.File;
029    import de.schlichtherle.io.FileInputStream;
030    import de.schlichtherle.io.FileOutputStream;
031    import de.schlichtherle.io.archive.zip.ZipDriver;
032    
033    import java.io.IOException;
034    import java.io.InputStream;
035    import java.io.OutputStream;
036    
037    import java.util.ArrayList;
038    import java.util.Collections;
039    import java.util.List;
040    
041    /**
042     * @author Raymond Augé
043     */
044    public class ZipReaderImpl implements ZipReader {
045    
046            static {
047                    File.setDefaultArchiveDetector(
048                            new DefaultArchiveDetector(
049                                    ArchiveDetector.ALL, "lar|" + ArchiveDetector.ALL.getSuffixes(),
050                                    new ZipDriver()));
051            }
052    
053            public ZipReaderImpl(InputStream inputStream) throws IOException {
054                    _zipFile = new File(FileUtil.createTempFile("zip"));
055    
056                    OutputStream outputStream = new FileOutputStream(_zipFile);
057    
058                    try {
059                            File.cat(inputStream, outputStream);
060                    }
061                    finally {
062                            outputStream.close();
063                            inputStream.close();
064                    }
065            }
066    
067            public ZipReaderImpl(java.io.File file) {
068                    _zipFile = new File(file);
069            }
070    
071            public void close() {
072                    try {
073                            File.umount(_zipFile);
074                    }
075                    catch (ArchiveBusyWarningException abwe) {
076                            if (_log.isWarnEnabled()) {
077                                    _log.warn(abwe, abwe);
078                            }
079                    }
080                    catch (ArchiveException ae) {
081                            _log.error(ae, ae);
082                    }
083            }
084    
085            public List<String> getEntries() {
086                    List<String> folderEntries = new ArrayList<String>();
087    
088                    File[] files = (File[])_zipFile.listFiles();
089    
090                    for (File file : files) {
091                            if (!file.isDirectory()) {
092                                    folderEntries.add(file.getEnclEntryName());
093                            }
094                            else {
095                                    processDirectory(file, folderEntries);
096                            }
097                    }
098    
099                    return folderEntries;
100            }
101    
102            public byte[] getEntryAsByteArray(String name) {
103                    if (Validator.isNull(name)) {
104                            return null;
105                    }
106    
107                    byte[] bytes = null;
108    
109                    try {
110                            InputStream is = getEntryAsInputStream(name);
111    
112                            if (is != null) {
113                                    bytes = FileUtil.getBytes(is);
114                            }
115                    }
116                    catch (IOException e) {
117                            _log.error(e, e);
118                    }
119    
120                    return bytes;
121            }
122    
123            public InputStream getEntryAsInputStream(String name) {
124                    if (Validator.isNull(name)) {
125                            return null;
126                    }
127    
128                    if (name.startsWith(StringPool.SLASH)) {
129                            name = name.substring(1);
130                    }
131    
132                    File file = new File(_zipFile, name, DefaultArchiveDetector.NULL);
133    
134                    if (file.exists() && !file.isDirectory()) {
135                            try {
136                                    if (_log.isDebugEnabled()) {
137                                            _log.debug("Extracting " + name);
138                                    }
139    
140                                    return new FileInputStream(file);
141                            }
142                            catch (IOException ioe) {
143                                    _log.error(ioe, ioe);
144                            }
145                    }
146    
147                    return null;
148            }
149    
150            public String getEntryAsString(String name) {
151                    if (Validator.isNull(name)) {
152                            return null;
153                    }
154    
155                    byte[] bytes = getEntryAsByteArray(name);
156    
157                    if (bytes != null) {
158                            return new String(bytes);
159                    }
160    
161                    return null;
162            }
163    
164            public List<String> getFolderEntries(String path) {
165                    if (Validator.isNull(path)) {
166                            return Collections.emptyList();
167                    }
168    
169                    List<String> folderEntries = new ArrayList<String>();
170    
171                    File directory = new File(_zipFile.getPath() + StringPool.SLASH + path);
172    
173                    if (!directory.exists()) {
174                            return folderEntries;
175                    }
176    
177                    File[] files = (File[])directory.listFiles();
178    
179                    for (File file : files) {
180                            if (!file.isDirectory()) {
181                                    folderEntries.add(file.getEnclEntryName());
182                            }
183                    }
184    
185                    return folderEntries;
186            }
187    
188            protected void processDirectory(
189                    File directory, List<String> folderEntries) {
190    
191                    File[] files = (File[])directory.listFiles();
192    
193                    for (File file : files) {
194                            if (!file.isDirectory()) {
195                                    folderEntries.add(file.getEnclEntryName());
196                            }
197                            else {
198                                    processDirectory(file, folderEntries);
199                            }
200                    }
201            }
202    
203            private static Log _log = LogFactoryUtil.getLog(ZipReaderImpl.class);
204    
205            private File _zipFile;
206    
207    }