zxing/csharp/common/CharacterSetECI.cs
srowen d4efd44fb0 New C# port from Suraj Supekar
git-svn-id: https://zxing.googlecode.com/svn/trunk@1202 59b500cc-1b3d-0410-9834-0bbf25fbcc57
2010-02-05 19:52:53 +00:00

126 lines
4.3 KiB
C#
Executable file

/*
* Copyright 2008 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
namespace com.google.zxing.common
{
/// <summary> Encapsulates a Character Set ECI, according to "Extended Channel Interpretations" 5.3.1.1
/// of ISO 18004.
///
/// </summary>
/// <author> Sean Owen
/// </author>
/// <author>www.Redivivus.in (suraj.supekar@redivivus.in) - Ported from ZXING Java Source
/// </author>
public sealed class CharacterSetECI:ECI
{
public System.String EncodingName
{
get
{
return encodingName;
}
}
private static System.Collections.Hashtable VALUE_TO_ECI;
private static System.Collections.Hashtable NAME_TO_ECI;
private static void initialize()
{
VALUE_TO_ECI = System.Collections.Hashtable.Synchronized(new System.Collections.Hashtable(29));
NAME_TO_ECI = System.Collections.Hashtable.Synchronized(new System.Collections.Hashtable(29));
// TODO figure out if these values are even right!
addCharacterSet(0, "Cp437");
addCharacterSet(1, new System.String[]{"ISO8859_1", "ISO-8859-1"});
addCharacterSet(2, "Cp437");
addCharacterSet(3, new System.String[]{"ISO8859_1", "ISO-8859-1"});
addCharacterSet(4, "ISO8859_2");
addCharacterSet(5, "ISO8859_3");
addCharacterSet(6, "ISO8859_4");
addCharacterSet(7, "ISO8859_5");
addCharacterSet(8, "ISO8859_6");
addCharacterSet(9, "ISO8859_7");
addCharacterSet(10, "ISO8859_8");
addCharacterSet(11, "ISO8859_9");
addCharacterSet(12, "ISO8859_10");
addCharacterSet(13, "ISO8859_11");
addCharacterSet(15, "ISO8859_13");
addCharacterSet(16, "ISO8859_14");
addCharacterSet(17, "ISO8859_15");
addCharacterSet(18, "ISO8859_16");
addCharacterSet(20, new System.String[]{"SJIS", "Shift_JIS"});
}
//UPGRADE_NOTE: Final was removed from the declaration of 'encodingName '. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1003'"
private System.String encodingName;
private CharacterSetECI(int value_Renamed, System.String encodingName):base(value_Renamed)
{
this.encodingName = encodingName;
}
private static void addCharacterSet(int value_Renamed, System.String encodingName)
{
CharacterSetECI eci = new CharacterSetECI(value_Renamed, encodingName);
VALUE_TO_ECI[(System.Int32) value_Renamed] = eci; // can't use valueOf
NAME_TO_ECI[encodingName] = eci;
}
private static void addCharacterSet(int value_Renamed, System.String[] encodingNames)
{
CharacterSetECI eci = new CharacterSetECI(value_Renamed, encodingNames[0]);
VALUE_TO_ECI[(System.Int32) value_Renamed] = eci; // can't use valueOf
for (int i = 0; i < encodingNames.Length; i++)
{
NAME_TO_ECI[encodingNames[i]] = eci;
}
}
/// <param name="value">character set ECI value
/// </param>
/// <returns> {@link CharacterSetECI} representing ECI of given value, or null if it is legal but
/// unsupported
/// </returns>
/// <throws> IllegalArgumentException if ECI value is invalid </throws>
public static CharacterSetECI getCharacterSetECIByValue(int value_Renamed)
{
if (VALUE_TO_ECI == null)
{
initialize();
}
if (value_Renamed < 0 || value_Renamed >= 900)
{
throw new System.ArgumentException("Bad ECI value: " + value_Renamed);
}
return (CharacterSetECI) VALUE_TO_ECI[(System.Int32) value_Renamed];
}
/// <param name="name">character set ECI encoding name
/// </param>
/// <returns> {@link CharacterSetECI} representing ECI for character encoding, or null if it is legal
/// but unsupported
/// </returns>
public static CharacterSetECI getCharacterSetECIByName(System.String name)
{
if (NAME_TO_ECI == null)
{
initialize();
}
return (CharacterSetECI) NAME_TO_ECI[name];
}
}
}