001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: *
041: * Contributor(s): Ivan Soleimanipour.
042: */
043:
044: /*
045: * "TermStream.java"
046: * TermStream.java 1.7 01/07/10
047: */
048:
049: package org.netbeans.lib.terminalemulator;
050:
051: /**
052: * TermStream is analogous to unix STREAMS.
053: * <br>
054: * It is a full duplex processing and data transfer path between a raw
055: * Term (The Data Terminal Equipment, DTE) and a client of the Term, usually
056: * a process (The Data Communication Equipment, DCE).
057: * <p>
058: * TermStream's can be chained together. This is performed using
059: * @see org.netbeans.lib.terminalemulator.Term#pushStream
060: * <p>
061: * Streams are usually used (in the context of terminals) to do echoing,
062: * line buffering, CR/NL translation and so on. See
063: * @see org.netbeans.lib.terminalemulator.LineDiscipline .
064: * They can also be used for logging and debugging.
065: */
066:
067: public abstract class TermStream {
068: protected TermStream toDTE; // delegate putChar's to toDTE
069: protected TermStream toDCE; // delegate sendChar to from_keyboard
070:
071: void setToDCE(TermStream toDCE) {
072: this .toDCE = toDCE;
073: }
074:
075: void setToDTE(TermStream toDTE) {
076: this .toDTE = toDTE;
077: }
078:
079: void setTerm(Term term) {
080: this .term = term;
081: }
082:
083: protected Term getTerm() {
084: return term;
085: }
086:
087: private Term term;
088:
089: // From world (DCE) to terminal (DTE) screen
090: public abstract void flush();
091:
092: public abstract void putChar(char c);
093:
094: public abstract void putChars(char buf[], int offset, int count);
095:
096: // From terminal *keyboard) (DTE) to world (DCE).
097: public abstract void sendChar(char c);
098:
099: public abstract void sendChars(char c[], int offset, int count);
100: }
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