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.shell.ui; 021 022 import org.crsh.shell.io.ShellWriterContext; 023 024 import java.io.IOException; 025 import java.util.ArrayList; 026 import java.util.EnumMap; 027 028 /** 029 * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> 030 * @version $Revision$ 031 */ 032 class UIWriterContext implements ShellWriterContext { 033 034 /** . */ 035 final ArrayList<Pad> stack; 036 037 /** . */ 038 boolean needLF; 039 040 UIWriterContext() { 041 this.stack = new ArrayList<Pad>(); 042 this.needLF = false; 043 } 044 045 private static EnumMap<Pad, String> charMap = new EnumMap<Pad, String>(Pad.class); 046 private static EnumMap<Pad, Pad> nextMap = new EnumMap<Pad, Pad>(Pad.class); 047 048 static { 049 charMap.put(Pad.BRANCH, "+-"); 050 charMap.put(Pad.LAST_BRANCH, "+-"); 051 charMap.put(Pad.CONTINUE_BRANCH, "| "); 052 charMap.put(Pad.STOP_BRANCH, " "); 053 nextMap.put(Pad.BRANCH, Pad.CONTINUE_BRANCH); 054 nextMap.put(Pad.CONTINUE_BRANCH, Pad.CONTINUE_BRANCH); 055 nextMap.put(Pad.LAST_BRANCH, Pad.STOP_BRANCH); 056 nextMap.put(Pad.STOP_BRANCH, Pad.STOP_BRANCH); 057 } 058 059 public void pad(Appendable appendable) throws IOException { 060 for (int i = 0;i < stack.size();i++) { 061 Pad abc = stack.get(i); 062 appendable.append(charMap.get(abc)); 063 Pad next = nextMap.get(abc); 064 stack.set(i, next); 065 } 066 } 067 068 public void text(CharSequence csq, int off, int end) { 069 needLF = true; 070 } 071 072 public void lineFeed() { 073 needLF = false; 074 } 075 }