001/* FileImageOutputStream.java -- 002 Copyright (C) 2004 Free Software Foundation, Inc. 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038 039package javax.imageio.stream; 040 041import java.io.File; 042import java.io.FileNotFoundException; 043import java.io.IOException; 044import java.io.RandomAccessFile; 045 046/** 047 * @author Michael Koch (konqueror@gmx.de) 048 */ 049public class FileImageOutputStream extends ImageOutputStreamImpl 050{ 051 private RandomAccessFile file; 052 053 public FileImageOutputStream(File file) 054 throws FileNotFoundException, IOException 055 { 056 if (file == null) 057 throw new IllegalArgumentException("file may not be null"); 058 059 // Do security check. 060 file.canRead(); 061 062 this.file = new RandomAccessFile(file, "r"); 063 } 064 065 public FileImageOutputStream(RandomAccessFile file) 066 { 067 if (file == null) 068 throw new IllegalArgumentException("file may not be null"); 069 070 this.file = file; 071 } 072 073 public void close() 074 throws IOException 075 { 076 file.close(); 077 } 078 079 public long length() 080 { 081 try 082 { 083 return file.length(); 084 } 085 catch (IOException e) 086 { 087 return -1L; 088 } 089 } 090 091 public int read() 092 throws IOException 093 { 094 checkClosed(); 095 096 setBitOffset(0); 097 return file.read(); 098 } 099 100 public int read(byte[] data, int offset, int len) 101 throws IOException 102 { 103 checkClosed(); 104 105 setBitOffset(0); 106 return file.read(data, offset, len); 107 } 108 109 public void seek(long position) 110 throws IOException 111 { 112 super.seek(position); 113 file.seek(position); 114 } 115 116 public void write(byte[] data, int offset, int len) 117 throws IOException 118 { 119 checkClosed(); 120 121 flushBits(); 122 file.write(data, offset, len); 123 } 124 125 public void write(int value) 126 throws IOException 127 { 128 checkClosed(); 129 130 // FIXME: Flush pending bits. 131 file.write(value); 132 } 133}