001    /**
002     * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
013     */
014    
015    package com.liferay.portal.image;
016    
017    import com.liferay.documentlibrary.NoSuchFileException;
018    import com.liferay.portal.kernel.exception.PortalException;
019    import com.liferay.portal.kernel.exception.SystemException;
020    import com.liferay.portal.kernel.util.FileUtil;
021    import com.liferay.portal.kernel.util.StringBundler;
022    import com.liferay.portal.kernel.util.StringPool;
023    import com.liferay.portal.model.Image;
024    import com.liferay.portal.util.PropsValues;
025    
026    import java.io.File;
027    import java.io.FileInputStream;
028    import java.io.IOException;
029    import java.io.InputStream;
030    
031    /**
032     * @author Jorge Ferrer
033     */
034    public class FileSystemHook extends BaseHook {
035    
036            public FileSystemHook() {
037                    _rootDir = new File(PropsValues.IMAGE_HOOK_FILE_SYSTEM_ROOT_DIR);
038    
039                    if (!_rootDir.exists()) {
040                            _rootDir.mkdirs();
041                    }
042            }
043    
044            public void deleteImage(Image image) {
045                    File file = getFile(image.getImageId(), image.getType());
046    
047                    FileUtil.delete(file);
048            }
049    
050            public byte[] getImageAsBytes(Image image)
051                    throws PortalException, SystemException {
052    
053                    try {
054                            File file = getFile(image.getImageId(), image.getType());
055    
056                            if (!file.exists()) {
057                                    throw new NoSuchFileException(file.getPath());
058                            }
059    
060                            return FileUtil.getBytes(file);
061                    }
062                    catch (IOException ioe) {
063                            throw new SystemException(ioe);
064                    }
065            }
066    
067            public InputStream getImageAsStream(Image image)
068                    throws PortalException, SystemException {
069    
070                    try {
071                            File file = getFile(image.getImageId(), image.getType());
072    
073                            if (!file.exists()) {
074                                    throw new NoSuchFileException(file.getPath());
075                            }
076    
077                            return new FileInputStream(file);
078                    }
079                    catch (IOException ioe) {
080                            throw new SystemException(ioe);
081                    }
082            }
083    
084            public void updateImage(Image image, String type, byte[] bytes)
085                    throws SystemException {
086    
087                    try {
088                            File file = getFile(image.getImageId(), type);
089    
090                            FileUtil.write(file, bytes);
091                    }
092                    catch (IOException ioe) {
093                            throw new SystemException(ioe);
094                    }
095            }
096    
097            protected String buildPath(String fileNameFragment) {
098                    int fileNameFragmentLength = fileNameFragment.length();
099    
100                    if (fileNameFragmentLength <= 2) {
101                            return StringPool.BLANK;
102                    }
103    
104                    StringBundler sb = new StringBundler(
105                            fileNameFragmentLength / 2 + fileNameFragmentLength);
106    
107                    for (int i = 0; i < fileNameFragmentLength; i += 2) {
108                            if ((i + 2) < fileNameFragmentLength) {
109                                    sb.append(StringPool.SLASH);
110                                    sb.append(fileNameFragment.substring(i, i + 2));
111                            }
112                    }
113    
114                    return sb.toString();
115            }
116    
117            protected File getFile(long imageId, String type) {
118                    String path = buildPath(String.valueOf(imageId));
119    
120                    return new File(
121                            _rootDir + StringPool.SLASH + path + StringPool.SLASH +
122                                    imageId + StringPool.PERIOD + type);
123            }
124    
125            private File _rootDir;
126    
127    }