@zxing/library
Version:
TypeScript port of ZXing multi-format 1D/2D barcode image processing library.
41 lines • 1.57 kB
JavaScript
import AbstractExpandedDecoder from './AbstractExpandedDecoder';
export default class AI01decoder extends AbstractExpandedDecoder {
constructor(information) {
super(information);
}
encodeCompressedGtin(buf, currentPos) {
buf.append("(01)");
let initialPosition = buf.length();
buf.append('9');
this.encodeCompressedGtinWithoutAI(buf, currentPos, initialPosition);
}
encodeCompressedGtinWithoutAI(buf, currentPos, initialBufferPosition) {
for (let i = 0; i < 4; ++i) {
let currentBlock = this.getGeneralDecoder().extractNumericValueFromBitArray(currentPos + 10 * i, 10);
if (currentBlock / 100 == 0) {
buf.append('0');
}
if (currentBlock / 10 == 0) {
buf.append('0');
}
buf.append(currentBlock);
}
AI01decoder.appendCheckDigit(buf, initialBufferPosition);
}
static appendCheckDigit(buf, currentPos) {
let checkDigit = 0;
for (let i = 0; i < 13; i++) {
//let digit = buf.charAt(i + currentPos) - '0';
//To be checked
let digit = buf.charAt(i + currentPos).charCodeAt(0) - '0'.charCodeAt(0);
checkDigit += (i & 0x01) == 0 ? 3 * digit : digit;
}
checkDigit = 10 - (checkDigit % 10);
if (checkDigit == 10) {
checkDigit = 0;
}
buf.append(checkDigit);
}
}
AI01decoder.GTIN_SIZE = 40;
//# sourceMappingURL=AI01decoder.js.map