53 lines
1.4 KiB
Java
53 lines
1.4 KiB
Java
/*
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* Copyright 2008 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.zxing.common;
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/**
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* Superclass of classes encapsulating types ECIs, according to "Extended Channel Interpretations"
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* 5.3 of ISO 18004.
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*
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* @author Sean Owen
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*/
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public abstract class ECI {
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private final int value;
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ECI(int value) {
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this.value = value;
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}
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public int getValue() {
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return value;
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}
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/**
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* @param value ECI value
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* @return ECI representing ECI of given value, or null if it is legal but unsupported
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* @throws IllegalArgumentException if ECI value is invalid
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*/
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public static ECI getECIByValue(int value) {
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if (value < 0 || value > 999999) {
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throw new IllegalArgumentException("Bad ECI value: " + value);
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}
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if (value < 900) { // Character set ECIs use 000000 - 000899
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return CharacterSetECI.getCharacterSetECIByValue(value);
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}
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return null;
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}
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}
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