001 /**
002 The contents of this file are subject to the Mozilla Public License Version 1.1
003 (the "License"); you may not use this file except in compliance with the License.
004 You may obtain a copy of the License at http://www.mozilla.org/MPL/
005 Software distributed under the License is distributed on an "AS IS" basis,
006 WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the
007 specific language governing rights and limitations under the License.
008
009 The Initial Developer of the Original Code is University Health Network. Copyright (C)
010 2001. All Rights Reserved.
011
012 Contributor(s): Jens Kristian Villadsen from Cetrea A/S
013
014 Alternatively, the contents of this file may be used under the terms of the
015 GNU General Public License (the "GPL"), in which case the provisions of the GPL are
016 applicable instead of those above. If you wish to allow use of your version of this
017 file only under the terms of the GPL and not to allow others to use your version
018 of this file under the MPL, indicate your decision by deleting the provisions above
019 and replace them with the notice and other provisions required by the GPL License.
020 If you do not delete the provisions above, a recipient may use your version of
021 this file under either the MPL or the GPL.
022
023 */
024
025
026 package ca.uhn.hl7v2.llp;
027
028 import java.nio.charset.Charset;
029
030 import ca.uhn.hl7v2.parser.EncodingNotSupportedException;
031
032 /**
033 * Charset utility class
034 *
035 * @author Jens Kristian Villadsen from Cetrea A/S
036 */
037 public class CharSetUtil
038 {
039 /**
040 * Accepts a charset name as defined by HL7 (ie. an MSH-18 value) into
041 * a Java charset corresponding to that name
042 *
043 * @param value
044 * The MSH-18 field
045 * @return The MSH-18 field represented as CharSet
046 * @throws EncodingNotSupportedException
047 */
048 public static Charset convertHL7CharacterEncodingToCharSetvalue(String value) throws EncodingNotSupportedException
049 {
050 if(value == null)
051 {
052 return Charset.forName("US-ASCII");
053 }
054
055 String trimmedString = value.trim().toUpperCase();
056 {
057 if("".equals(trimmedString))
058 return Charset.forName("US-ASCII");
059 if("ASCII".equals(trimmedString))
060 return Charset.forName("US-ASCII");
061 if("8859/1".equals(trimmedString))
062 return Charset.forName("ISO-8859-1");
063 if("8859/2".equals(trimmedString))
064 return Charset.forName("ISO-8859-2");
065 if("8859/3".equals(trimmedString))
066 return Charset.forName("ISO-8859-3");
067 if("8859/4".equals(trimmedString))
068 return Charset.forName("ISO-8859-4");
069 if("8859/5".equals(trimmedString))
070 return Charset.forName("ISO-8859-5");
071 if("8859/6".equals(trimmedString))
072 return Charset.forName("ISO-8859-6");
073 if("8859/7".equals(trimmedString))
074 return Charset.forName("ISO-8859-7");
075 if("8859/8".equals(trimmedString))
076 return Charset.forName("ISO-8859-8");
077 if("8859/9".equals(trimmedString))
078 return Charset.forName("ISO-8859-9");
079 if("8859/15".equals(trimmedString))
080 return Charset.forName("ISO-8859-15");
081 if("UNICODE UTF-8".equals(trimmedString))
082 return Charset.forName("UTF-8");
083 if("UNICODE UTF-16".equals(trimmedString))
084 return Charset.forName("UTF-16");
085 if("UNICODE".equals(trimmedString))
086 return Charset.forName("UTF-8");
087 }
088 throw new EncodingNotSupportedException(value);
089 }
090 }