001 /* 002 * Copyright (C) 2010 eXo Platform SAS. 003 * 004 * This is free software; you can redistribute it and/or modify it 005 * under the terms of the GNU Lesser General Public License as 006 * published by the Free Software Foundation; either version 2.1 of 007 * the License, or (at your option) any later version. 008 * 009 * This software is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * You should have received a copy of the GNU Lesser General Public 015 * License along with this software; if not, write to the Free 016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org. 018 */ 019 020 package org.crsh.term.spi.jline; 021 022 import jline.ConsoleReader; 023 import org.crsh.term.CodeType; 024 import org.crsh.term.spi.TermIO; 025 026 import java.io.IOException; 027 import java.lang.reflect.Field; 028 import java.lang.reflect.Method; 029 030 /** 031 * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> 032 * @version $Revision$ 033 */ 034 public class JLineIO implements TermIO { 035 036 /** . */ 037 private final ConsoleReader reader; 038 039 /** . */ 040 private final short[] keyBindings; 041 042 /** . */ 043 private StringBuffer buffer = new StringBuffer(); 044 045 public JLineIO() throws Exception { 046 ConsoleReader reader = new ConsoleReader(); 047 Method method = ConsoleReader.class.getDeclaredMethod("getKeyForAction", short.class); 048 method.setAccessible(true); 049 050 051 Field f = ConsoleReader.class.getDeclaredField("keybindings"); 052 f.setAccessible(true); 053 short[] keyBindings = (short[])f.get(reader); 054 055 056 // 057 this.reader = reader; 058 this.keyBindings = keyBindings; 059 } 060 061 public int read() throws IOException { 062 int i = reader.readVirtualKey(); 063 return i; 064 } 065 066 public int getWidth() { 067 return reader.getTermwidth(); 068 } 069 070 public String getProperty(String name) { 071 return null; 072 } 073 074 public CodeType decode(int code) { 075 short action = keyBindings[code]; 076 switch (action) { 077 case ConsoleReader.COMPLETE: 078 return CodeType.TAB; 079 case ConsoleReader.DELETE_PREV_CHAR: 080 return CodeType.BACKSPACE; 081 case ConsoleReader.PREV_CHAR: 082 return CodeType.LEFT; 083 case ConsoleReader.NEXT_CHAR: 084 return CodeType.RIGHT; 085 case ConsoleReader.EXIT: 086 return CodeType.CLOSE; 087 case ConsoleReader.PREV_HISTORY: 088 return CodeType.UP; 089 case ConsoleReader.NEXT_HISTORY: 090 return CodeType.DOWN; 091 default: 092 return CodeType.CHAR; 093 } 094 } 095 096 public void close() { 097 // 098 } 099 100 public void flush() throws IOException { 101 System.out.print(buffer); 102 buffer.setLength(0); 103 } 104 105 public void write(String s) throws IOException { 106 buffer.append(s); 107 } 108 109 public void write(char c) throws IOException { 110 buffer.append(c); 111 } 112 113 public void writeDel() throws IOException { 114 buffer.append("\b \b"); 115 } 116 117 public void writeCRLF() throws IOException { 118 buffer.append("\n"); 119 } 120 121 public boolean moveRight(char c) throws IOException { 122 buffer.append(c); 123 return true; 124 } 125 126 public boolean moveLeft() throws IOException { 127 buffer.append("\b"); 128 return true; 129 } 130 }