Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package org.apache.commons.compress.compressors.gzip; import java.util.zip.Deflater; /** * Parameters for the GZIP compressor. * * @since 1.7 */ public class GzipParameters { private int compressionLevel = Deflater.DEFAULT_COMPRESSION; private long modificationTime; private String filename; private String comment; private int operatingSystem = 255; // Unknown OS by default public int getCompressionLevel() { return compressionLevel; } /** * Sets the compression level. * * @param compressionLevel the compression level (between 0 and 9) * @see Deflater#NO_COMPRESSION * @see Deflater#BEST_SPEED * @see Deflater#DEFAULT_COMPRESSION * @see Deflater#BEST_COMPRESSION */ public void setCompressionLevel(final int compressionLevel) { if (compressionLevel < -1 || compressionLevel > 9) { throw new IllegalArgumentException("Invalid gzip compression level: " + compressionLevel); } this.compressionLevel = compressionLevel; } public long getModificationTime() { return modificationTime; } /** * Sets the modification time of the compressed file. * * @param modificationTime the modification time, in milliseconds */ public void setModificationTime(final long modificationTime) { this.modificationTime = modificationTime; } public String getFilename() { return filename; } /** * Sets the name of the compressed file. * * @param filename the name of the file without the directory path */ public void setFilename(final String filename) { this.filename = filename; } public String getComment() { return comment; } public void setComment(final String comment) { this.comment = comment; } public int getOperatingSystem() { return operatingSystem; } /** * Sets the operating system on which the compression took place. * The defined values are: * <ul> * <li>0: FAT filesystem (MS-DOS, OS/2, NT/Win32)</li> * <li>1: Amiga</li> * <li>2: VMS (or OpenVMS)</li> * <li>3: Unix</li> * <li>4: VM/CMS</li> * <li>5: Atari TOS</li> * <li>6: HPFS filesystem (OS/2, NT)</li> * <li>7: Macintosh</li> * <li>8: Z-System</li> * <li>9: CP/M</li> * <li>10: TOPS-20</li> * <li>11: NTFS filesystem (NT)</li> * <li>12: QDOS</li> * <li>13: Acorn RISCOS</li> * <li>255: Unknown</li> * </ul> * * @param operatingSystem the code of the operating system */ public void setOperatingSystem(final int operatingSystem) { this.operatingSystem = operatingSystem; } }