@zxing/library
Version:
TypeScript port of ZXing multi-format 1D/2D barcode image processing library.
70 lines (69 loc) • 2.27 kB
JavaScript
/*
* Copyright 2013 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.pdf417.decoder;
// import com.google.zxing.pdf417.PDF417Common;
import PDF417Common from '../PDF417Common';
// import java.util.ArrayList;
// import java.util.Collection;
// import java.util.HashMap;
// import java.util.Map;
// import java.util.Map.Entry;
/**
* @author Guenther Grau
*/
export default /*final*/ class BarcodeValue {
constructor() {
this.values = new Map();
}
/**
* Add an occurrence of a value
*/
setValue(value) {
value = Math.trunc(value);
let confidence = this.values.get(value);
if (confidence == null) {
confidence = 0;
}
confidence++;
this.values.set(value, confidence);
}
/**
* Determines the maximum occurrence of a set value and returns all values which were set with this occurrence.
* @return an array of int, containing the values with the highest occurrence, or null, if no value was set
*/
getValue() {
let maxConfidence = -1;
let result = new Array();
for (const [key, value] of this.values.entries()) {
const entry = {
getKey: () => key,
getValue: () => value,
};
if (entry.getValue() > maxConfidence) {
maxConfidence = entry.getValue();
result = [];
result.push(entry.getKey());
}
else if (entry.getValue() === maxConfidence) {
result.push(entry.getKey());
}
}
return PDF417Common.toIntArray(result);
}
getConfidence(value) {
return this.values.get(value);
}
}