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1: /* Channels.java -- 2: Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: 39: package java.nio.channels; 40: 41: import gnu.java.nio.ChannelReader; 42: import gnu.java.nio.InputStreamChannel; 43: import gnu.java.nio.OutputStreamChannel; 44: 45: import java.io.InputStream; 46: import java.io.OutputStream; 47: import java.io.Reader; 48: import java.io.Writer; 49: import java.nio.charset.Charset; 50: import java.nio.charset.CharsetDecoder; 51: import java.nio.charset.CharsetEncoder; 52: 53: 54: /** 55: * @since 1.4 56: */ 57: public final class Channels 58: { 59: /** 60: * This class isn't intended to be instantiated. 61: */ 62: private Channels() 63: { 64: // Do nothing here. 65: } 66: 67: /** 68: * Constructs a stream that reads bytes from the given channel. 69: */ 70: public static InputStream newInputStream(ReadableByteChannel ch) 71: { 72: return VMChannels.newInputStream(ch); 73: } 74: 75: /** 76: * Constructs a stream that writes bytes to the given channel. 77: */ 78: public static OutputStream newOutputStream(WritableByteChannel ch) 79: { 80: return VMChannels.newOutputStream(ch); 81: } 82: 83: /** 84: * Constructs a channel that reads bytes from the given stream. 85: */ 86: public static ReadableByteChannel newChannel(InputStream in) 87: { 88: return new InputStreamChannel(in); 89: } 90: 91: /** 92: * Constructs a channel that writes bytes to the given stream. 93: */ 94: public static WritableByteChannel newChannel(OutputStream out) 95: { 96: return new OutputStreamChannel(out); 97: } 98: 99: /** 100: * Constructs a reader that decodes bytes from the given channel using the 101: * given decoder. 102: */ 103: public static Reader newReader(ReadableByteChannel ch, CharsetDecoder dec, 104: int minBufferCap) 105: { 106: return new ChannelReader(ch, dec, minBufferCap); 107: } 108: 109: /** 110: * Constructs a reader that decodes bytes from the given channel according to 111: * the named charset. 112: * 113: * @exception UnsupportedCharsetException If no support for the named charset 114: * is available in this instance of the Java virtual machine. 115: */ 116: public static Reader newReader(ReadableByteChannel ch, String csName) 117: { 118: return newReader(ch, Charset.forName(csName).newDecoder(), -1); 119: } 120: 121: /** 122: * Constructs a writer that encodes characters using the given encoder and 123: * writes the resulting bytes to the given channel. 124: */ 125: public static Writer newWriter(WritableByteChannel ch, CharsetEncoder enc, 126: int minBufferCap) 127: { 128: // FIXME: implement java.nio.channels.Channel.newWriter(WritableByteChannel, CharsetEncoder, int) 129: throw new Error("not implemented"); 130: } 131: 132: /** 133: * Constructs a writer that encodes characters according to the named charset 134: * and writes the resulting bytes to the given channel. 135: * 136: * @exception UnsupportedCharsetException If no support for the named charset 137: * is available in this instance of the Java virtual machine. 138: */ 139: public static Writer newWriter(WritableByteChannel ch, String csName) 140: { 141: return newWriter(ch, Charset.forName(csName).newEncoder(), -1); 142: } 143: }
GNU Classpath (0.20) |