@zxing/library
Version:
TypeScript port of ZXing multi-format 1D/2D barcode image processing library.
95 lines (94 loc) • 3.78 kB
JavaScript
;
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.X12Encoder = void 0;
var StringUtils_1 = require("../../common/StringUtils");
var StringBuilder_1 = require("../../util/StringBuilder");
var C40Encoder_1 = require("./C40Encoder");
var HighLevelEncoder_1 = require("./HighLevelEncoder");
var constants_1 = require("./constants");
var X12Encoder = /** @class */ (function (_super) {
__extends(X12Encoder, _super);
function X12Encoder() {
return _super !== null && _super.apply(this, arguments) || this;
}
X12Encoder.prototype.getEncodingMode = function () {
return constants_1.X12_ENCODATION;
};
X12Encoder.prototype.encode = function (context) {
// step C
var buffer = new StringBuilder_1.default();
while (context.hasMoreCharacters()) {
var c = context.getCurrentChar();
context.pos++;
this.encodeChar(c, buffer);
var count = buffer.length();
if (count % 3 === 0) {
this.writeNextTriplet(context, buffer);
var newMode = HighLevelEncoder_1.default.lookAheadTest(context.getMessage(), context.pos, this.getEncodingMode());
if (newMode !== this.getEncodingMode()) {
// Return to ASCII encodation, which will actually handle latch to new mode
context.signalEncoderChange(constants_1.ASCII_ENCODATION);
break;
}
}
}
this.handleEOD(context, buffer);
};
X12Encoder.prototype.encodeChar = function (c, sb) {
switch (c) {
case 13: // CR (Carriage return)
sb.append(0);
break;
case '*'.charCodeAt(0):
sb.append(1);
break;
case '>'.charCodeAt(0):
sb.append(2);
break;
case ' '.charCodeAt(0):
sb.append(3);
break;
default:
if (c >= '0'.charCodeAt(0) && c <= '9'.charCodeAt(0)) {
sb.append(c - 48 + 4);
}
else if (c >= 'A'.charCodeAt(0) && c <= 'Z'.charCodeAt(0)) {
sb.append(c - 65 + 14);
}
else {
HighLevelEncoder_1.default.illegalCharacter(StringUtils_1.default.getCharAt(c));
}
break;
}
return 1;
};
X12Encoder.prototype.handleEOD = function (context, buffer) {
context.updateSymbolInfo();
var available = context.getSymbolInfo().getDataCapacity() - context.getCodewordCount();
var count = buffer.length();
context.pos -= count;
if (context.getRemainingCharacters() > 1 ||
available > 1 ||
context.getRemainingCharacters() !== available) {
context.writeCodeword(constants_1.X12_UNLATCH);
}
if (context.getNewEncoding() < 0) {
context.signalEncoderChange(constants_1.ASCII_ENCODATION);
}
};
return X12Encoder;
}(C40Encoder_1.C40Encoder));
exports.X12Encoder = X12Encoder;