@zxing/library
Version:
TypeScript port of ZXing multi-format 1D/2D barcode image processing library.
83 lines (82 loc) • 2.77 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.TextEncoder = void 0;
var C40Encoder_1 = require("./C40Encoder");
var constants_1 = require("./constants");
var TextEncoder = /** @class */ (function (_super) {
__extends(TextEncoder, _super);
function TextEncoder() {
return _super !== null && _super.apply(this, arguments) || this;
}
TextEncoder.prototype.getEncodingMode = function () {
return constants_1.TEXT_ENCODATION;
};
TextEncoder.prototype.encodeChar = function (c, sb) {
if (c === ' '.charCodeAt(0)) {
sb.append(3);
return 1;
}
if (c >= '0'.charCodeAt(0) && c <= '9'.charCodeAt(0)) {
sb.append(c - 48 + 4);
return 1;
}
if (c >= 'a'.charCodeAt(0) && c <= 'z'.charCodeAt(0)) {
sb.append(c - 97 + 14);
return 1;
}
if (c < ' '.charCodeAt(0)) {
sb.append(0); // Shift 1 Set
sb.append(c);
return 2;
}
if (c <= '/'.charCodeAt(0)) {
sb.append(1); // Shift 2 Set
sb.append(c - 33);
return 2;
}
if (c <= '@'.charCodeAt(0)) {
sb.append(1); // Shift 2 Set
sb.append(c - 58 + 15);
return 2;
}
if (c >= '['.charCodeAt(0) && c <= '_'.charCodeAt(0)) {
sb.append(1); // Shift 2 Set
sb.append(c - 91 + 22);
return 2;
}
if (c === '`'.charCodeAt(0)) {
sb.append(2); // Shift 3 Set
sb.append(0); // '`' - 96 == 0
return 2;
}
if (c <= 'Z'.charCodeAt(0)) {
sb.append(2); // Shift 3 Set
sb.append(c - 65 + 1);
return 2;
}
if (c <= 127) {
sb.append(2); // Shift 3 Set
sb.append(c - 123 + 27);
return 2;
}
sb.append(1 + "\u001E"); // Shift 2, Upper Shift
var len = 2;
len += this.encodeChar(c - 128, sb);
return len;
};
return TextEncoder;
}(C40Encoder_1.C40Encoder));
exports.TextEncoder = TextEncoder;