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.cmdline; 021 022 import java.io.IOException; 023 024 /** 025 * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a> 026 * @version $Revision$ 027 */ 028 public enum Delimiter { 029 030 EMPTY(' ') { 031 @Override 032 public void escape(CharSequence s, int start, int end, Appendable appendable) throws IOException { 033 while (start < end) { 034 char c = s.charAt(start++); 035 switch (c) { 036 case ' ': 037 case '"': 038 case '\'': 039 case '\\': 040 appendable.append('\\'); 041 } 042 appendable.append(c); 043 } 044 } 045 }, 046 047 SINGLE_QUOTE('\'') { 048 @Override 049 public void escape(CharSequence s, int start, int end, Appendable appendable) throws IOException { 050 while (start < end) { 051 while (start < end) { 052 char c = s.charAt(start++); 053 switch (c) { 054 case '\'': 055 case '\\': 056 appendable.append('\\'); 057 } 058 appendable.append(c); 059 } 060 } 061 } 062 }, 063 064 DOUBLE_QUOTE('"') { 065 @Override 066 public void escape(CharSequence s, int start, int end, Appendable appendable) throws IOException { 067 while (start < end) { 068 while (start < end) { 069 char c = s.charAt(start++); 070 switch (c) { 071 case '"': 072 case '\\': 073 appendable.append('\\'); 074 } 075 appendable.append(c); 076 } 077 } 078 } 079 }; 080 081 /** . */ 082 private final char value; 083 084 Delimiter(char value) { 085 this.value = value; 086 } 087 088 public char getValue() { 089 return value; 090 } 091 092 public final void escape(CharSequence s, Appendable appendable) throws IOException { 093 escape(s, 0, s.length(), appendable); 094 } 095 096 public abstract void escape(CharSequence s, int start, int end, Appendable appendable) throws IOException; 097 }