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/*
* 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.
*/
package com.google.zxing.common;
import com.google.zxing.FormatException;
import java.util.HashMap;
import java.util.Map;
/**
* Encapsulates a Character Set ECI, according to "Extended Channel Interpretations" 5.3.1.1
* of ISO 18004.
*
* @author Sean Owen
*/
public enum CharacterSetECI {
// Enum name is a Java encoding valid for java.lang and java.io
Cp437(new int[]{0,2}),
ISO8859_1(new int[]{1,3}, "ISO-8859-1"),
ISO8859_2(4, "ISO-8859-2"),
ISO8859_3(5, "ISO-8859-3"),
ISO8859_4(6, "ISO-8859-4"),
ISO8859_5(7, "ISO-8859-5"),
ISO8859_6(8, "ISO-8859-6"),
ISO8859_7(9, "ISO-8859-7"),
ISO8859_8(10, "ISO-8859-8"),
ISO8859_9(11, "ISO-8859-9"),
ISO8859_10(12, "ISO-8859-10"),
ISO8859_11(13, "ISO-8859-11"),
ISO8859_13(15, "ISO-8859-13"),
ISO8859_14(16, "ISO-8859-14"),
ISO8859_15(17, "ISO-8859-15"),
ISO8859_16(18, "ISO-8859-16"),
SJIS(20, "Shift_JIS"),
Cp1250(21, "windows-1250"),
Cp1251(22, "windows-1251"),
Cp1252(23, "windows-1252"),
Cp1256(24, "windows-1256"),
UnicodeBigUnmarked(25, "UTF-16BE", "UnicodeBig"),
UTF8(26, "UTF-8"),
ASCII(new int[] {27, 170}, "US-ASCII"),
Big5(28),
GB18030(29, "GB2312", "EUC_CN", "GBK"),
EUC_KR(30, "EUC-KR");
private static final Map VALUE_TO_ECI = new HashMap<>();
private static final Map NAME_TO_ECI = new HashMap<>();
static {
for (CharacterSetECI eci : values()) {
for (int value : eci.values) {
VALUE_TO_ECI.put(value, eci);
}
NAME_TO_ECI.put(eci.name(), eci);
for (String name : eci.otherEncodingNames) {
NAME_TO_ECI.put(name, eci);
}
}
}
private final int[] values;
private final String[] otherEncodingNames;
CharacterSetECI(int value) {
this(new int[] {value});
}
CharacterSetECI(int value, String... otherEncodingNames) {
this.values = new int[] {value};
this.otherEncodingNames = otherEncodingNames;
}
CharacterSetECI(int[] values, String... otherEncodingNames) {
this.values = values;
this.otherEncodingNames = otherEncodingNames;
}
public int getValue() {
return values[0];
}
/**
* @param value character set ECI value
* @return {@code CharacterSetECI} representing ECI of given value, or null if it is legal but
* unsupported
* @throws FormatException if ECI value is invalid
*/
public static CharacterSetECI getCharacterSetECIByValue(int value) throws FormatException {
if (value < 0 || value >= 900) {
throw FormatException.getFormatInstance();
}
return VALUE_TO_ECI.get(value);
}
/**
* @param name character set ECI encoding name
* @return CharacterSetECI representing ECI for character encoding, or null if it is legal
* but unsupported
*/
public static CharacterSetECI getCharacterSetECIByName(String name) {
return NAME_TO_ECI.get(name);
}
}