widget-code-zb
Version:
中百二维码组件
202 lines (199 loc) • 5.83 kB
JavaScript
import QRErrorCorrectLevel from './QRErrorCorrectLevel.js';
function QRRSBlock(totalCount, dataCount) {
this.totalCount = totalCount;
this.dataCount = dataCount;
}
QRRSBlock.RS_BLOCK_TABLE = [
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[]
];
QRRSBlock.getRSBlocks = function(typeNumber, errorCorrectLevel) {
let rsBlock = QRRSBlock.getRsBlockTable(typeNumber, errorCorrectLevel);
if (rsBlock == undefined) {
throw new Error("bad rs block @ typeNumber:" + typeNumber + "/errorCorrectLevel:" + errorCorrectLevel);
}
let length = rsBlock.length / 3;
let list = [];
for (let i = 0; i < length; i++) {
let count = rsBlock[i * 3 + 0];
let totalCount = rsBlock[i * 3 + 1];
let dataCount = rsBlock[i * 3 + 2];
for (let j = 0; j < count; j++) {
list.push(new QRRSBlock(totalCount, dataCount));
}
}
return list;
};
QRRSBlock.getRsBlockTable = function(typeNumber, errorCorrectLevel) {
switch (errorCorrectLevel) {
case QRErrorCorrectLevel.L:
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
case QRErrorCorrectLevel.M:
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
case QRErrorCorrectLevel.Q:
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
case QRErrorCorrectLevel.H:
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
default:
return undefined;
}
};
export default QRRSBlock;