001 /*
002 * Copyright (C) 2012 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.cli.impl;
021
022 import java.io.IOException;
023 import java.lang.reflect.UndeclaredThrowableException;
024
025 public enum Delimiter {
026
027 EMPTY(' ') {
028 @Override
029 public void escape(CharSequence s, int start, int end, Appendable appendable) throws IOException {
030 while (start < end) {
031 char c = s.charAt(start++);
032 switch (c) {
033 case ' ':
034 case '"':
035 case '\'':
036 case '\\':
037 appendable.append('\\');
038 }
039 appendable.append(c);
040 }
041 }
042 },
043
044 SINGLE_QUOTE('\'') {
045 @Override
046 public void escape(CharSequence s, int start, int end, Appendable appendable) throws IOException {
047 while (start < end) {
048 while (start < end) {
049 char c = s.charAt(start++);
050 switch (c) {
051 case '\'':
052 case '\\':
053 appendable.append('\\');
054 }
055 appendable.append(c);
056 }
057 }
058 }
059 },
060
061 DOUBLE_QUOTE('"') {
062 @Override
063 public void escape(CharSequence s, int start, int end, Appendable appendable) throws IOException {
064 while (start < end) {
065 while (start < end) {
066 char c = s.charAt(start++);
067 switch (c) {
068 case '"':
069 case '\\':
070 appendable.append('\\');
071 }
072 appendable.append(c);
073 }
074 }
075 }
076 };
077
078 /** . */
079 private final char value;
080
081 Delimiter(char value) {
082 this.value = value;
083 }
084
085 public char getValue() {
086 return value;
087 }
088
089 public final String escape(CharSequence s) {
090 try {
091 StringBuilder buffer = new StringBuilder();
092 escape(s, buffer);
093 return buffer.toString();
094 }
095 catch (IOException e) {
096 throw new UndeclaredThrowableException(e);
097 }
098 }
099
100 public final void escape(CharSequence s, Appendable appendable) throws IOException {
101 escape(s, 0, s.length(), appendable);
102 }
103
104 public abstract void escape(CharSequence s, int start, int end, Appendable appendable) throws IOException;
105 }