"use strict";
|
/*
|
* Copyright 2010 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.
|
*/
|
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 __());
|
};
|
})();
|
var __values = (this && this.__values) || function(o) {
|
var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
|
if (m) return m.call(o);
|
if (o && typeof o.length === "number") return {
|
next: function () {
|
if (o && i >= o.length) o = void 0;
|
return { value: o && o[i++], done: !o };
|
}
|
};
|
throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
|
};
|
Object.defineProperty(exports, "__esModule", { value: true });
|
/*namespace com.google.zxing.oned {*/
|
var BarcodeFormat_1 = require("../BarcodeFormat");
|
var ChecksumException_1 = require("../ChecksumException");
|
var FormatException_1 = require("../FormatException");
|
var NotFoundException_1 = require("../NotFoundException");
|
var OneDReader_1 = require("./OneDReader");
|
var Result_1 = require("../Result");
|
//import com.google.zxing.ResultMetadataType;
|
var ResultPoint_1 = require("../ResultPoint");
|
/**
|
* <p>Decodes Code 93 barcodes.</p>
|
*
|
* @author Sean Owen
|
* @see Code39Reader
|
*/
|
var Code93Reader = /** @class */ (function (_super) {
|
__extends(Code93Reader, _super);
|
//public Code93Reader() {
|
// decodeRowResult = new StringBuilder(20);
|
// counters = new int[6];
|
//}
|
function Code93Reader() {
|
var _this = _super.call(this) || this;
|
_this.decodeRowResult = '';
|
_this.counters = new Int32Array(6);
|
return _this;
|
}
|
Code93Reader.prototype.decodeRow = function (rowNumber, row, hints) {
|
var e_1, _a, e_2, _b;
|
var start = this.findAsteriskPattern(row);
|
// Read off white space
|
var nextStart = row.getNextSet(start[1]);
|
var end = row.getSize();
|
var theCounters = this.counters;
|
theCounters.fill(0);
|
this.decodeRowResult = '';
|
var decodedChar;
|
var lastStart;
|
do {
|
Code93Reader.recordPattern(row, nextStart, theCounters);
|
var pattern = this.toPattern(theCounters);
|
if (pattern < 0) {
|
throw new NotFoundException_1.default();
|
}
|
decodedChar = this.patternToChar(pattern);
|
this.decodeRowResult += decodedChar;
|
lastStart = nextStart;
|
try {
|
for (var theCounters_1 = (e_1 = void 0, __values(theCounters)), theCounters_1_1 = theCounters_1.next(); !theCounters_1_1.done; theCounters_1_1 = theCounters_1.next()) {
|
var counter = theCounters_1_1.value;
|
nextStart += counter;
|
}
|
}
|
catch (e_1_1) { e_1 = { error: e_1_1 }; }
|
finally {
|
try {
|
if (theCounters_1_1 && !theCounters_1_1.done && (_a = theCounters_1.return)) _a.call(theCounters_1);
|
}
|
finally { if (e_1) throw e_1.error; }
|
}
|
// Read off white space
|
nextStart = row.getNextSet(nextStart);
|
} while (decodedChar !== '*');
|
this.decodeRowResult = this.decodeRowResult.substring(0, this.decodeRowResult.length - 1); // remove asterisk
|
var lastPatternSize = 0;
|
try {
|
for (var theCounters_2 = __values(theCounters), theCounters_2_1 = theCounters_2.next(); !theCounters_2_1.done; theCounters_2_1 = theCounters_2.next()) {
|
var counter = theCounters_2_1.value;
|
lastPatternSize += counter;
|
}
|
}
|
catch (e_2_1) { e_2 = { error: e_2_1 }; }
|
finally {
|
try {
|
if (theCounters_2_1 && !theCounters_2_1.done && (_b = theCounters_2.return)) _b.call(theCounters_2);
|
}
|
finally { if (e_2) throw e_2.error; }
|
}
|
// Should be at least one more black module
|
if (nextStart === end || !row.get(nextStart)) {
|
throw new NotFoundException_1.default();
|
}
|
if (this.decodeRowResult.length < 2) {
|
// false positive -- need at least 2 checksum digits
|
throw new NotFoundException_1.default();
|
}
|
this.checkChecksums(this.decodeRowResult);
|
// Remove checksum digits
|
this.decodeRowResult = this.decodeRowResult.substring(0, this.decodeRowResult.length - 2);
|
var resultString = this.decodeExtended(this.decodeRowResult);
|
var left = (start[1] + start[0]) / 2.0;
|
var right = lastStart + lastPatternSize / 2.0;
|
return new Result_1.default(resultString, null, 0, [new ResultPoint_1.default(left, rowNumber), new ResultPoint_1.default(right, rowNumber)], BarcodeFormat_1.default.CODE_93, new Date().getTime());
|
};
|
Code93Reader.prototype.findAsteriskPattern = function (row) {
|
var width = row.getSize();
|
var rowOffset = row.getNextSet(0);
|
this.counters.fill(0);
|
var theCounters = this.counters;
|
var patternStart = rowOffset;
|
var isWhite = false;
|
var patternLength = theCounters.length;
|
var counterPosition = 0;
|
for (var i = rowOffset; i < width; i++) {
|
if (row.get(i) !== isWhite) {
|
theCounters[counterPosition]++;
|
}
|
else {
|
if (counterPosition === patternLength - 1) {
|
if (this.toPattern(theCounters) === Code93Reader.ASTERISK_ENCODING) {
|
return new Int32Array([patternStart, i]);
|
}
|
patternStart += theCounters[0] + theCounters[1];
|
theCounters.copyWithin(0, 2, 2 + counterPosition - 1);
|
theCounters[counterPosition - 1] = 0;
|
theCounters[counterPosition] = 0;
|
counterPosition--;
|
}
|
else {
|
counterPosition++;
|
}
|
theCounters[counterPosition] = 1;
|
isWhite = !isWhite;
|
}
|
}
|
throw new NotFoundException_1.default;
|
};
|
Code93Reader.prototype.toPattern = function (counters) {
|
var e_3, _a;
|
var sum = 0;
|
try {
|
for (var counters_1 = __values(counters), counters_1_1 = counters_1.next(); !counters_1_1.done; counters_1_1 = counters_1.next()) {
|
var counter = counters_1_1.value;
|
sum += counter;
|
}
|
}
|
catch (e_3_1) { e_3 = { error: e_3_1 }; }
|
finally {
|
try {
|
if (counters_1_1 && !counters_1_1.done && (_a = counters_1.return)) _a.call(counters_1);
|
}
|
finally { if (e_3) throw e_3.error; }
|
}
|
var pattern = 0;
|
var max = counters.length;
|
for (var i = 0; i < max; i++) {
|
var scaled = Math.round(counters[i] * 9.0 / sum);
|
if (scaled < 1 || scaled > 4) {
|
return -1;
|
}
|
if ((i & 0x01) === 0) {
|
for (var j = 0; j < scaled; j++) {
|
pattern = (pattern << 1) | 0x01;
|
}
|
}
|
else {
|
pattern <<= scaled;
|
}
|
}
|
return pattern;
|
};
|
Code93Reader.prototype.patternToChar = function (pattern) {
|
for (var i = 0; i < Code93Reader.CHARACTER_ENCODINGS.length; i++) {
|
if (Code93Reader.CHARACTER_ENCODINGS[i] === pattern) {
|
return Code93Reader.ALPHABET_STRING.charAt(i);
|
}
|
}
|
throw new NotFoundException_1.default();
|
};
|
Code93Reader.prototype.decodeExtended = function (encoded) {
|
var length = encoded.length;
|
var decoded = '';
|
for (var i = 0; i < length; i++) {
|
var c = encoded.charAt(i);
|
if (c >= 'a' && c <= 'd') {
|
if (i >= length - 1) {
|
throw new FormatException_1.default();
|
}
|
var next = encoded.charAt(i + 1);
|
var decodedChar = '\0';
|
switch (c) {
|
case 'd':
|
// +A to +Z map to a to z
|
if (next >= 'A' && next <= 'Z') {
|
decodedChar = String.fromCharCode(next.charCodeAt(0) + 32);
|
}
|
else {
|
throw new FormatException_1.default();
|
}
|
break;
|
case 'a':
|
// $A to $Z map to control codes SH to SB
|
if (next >= 'A' && next <= 'Z') {
|
decodedChar = String.fromCharCode(next.charCodeAt(0) - 64);
|
}
|
else {
|
throw new FormatException_1.default();
|
}
|
break;
|
case 'b':
|
if (next >= 'A' && next <= 'E') {
|
// %A to %E map to control codes ESC to USep
|
decodedChar = String.fromCharCode(next.charCodeAt(0) - 38);
|
}
|
else if (next >= 'F' && next <= 'J') {
|
// %F to %J map to ; < = > ?
|
decodedChar = String.fromCharCode(next.charCodeAt(0) - 11);
|
}
|
else if (next >= 'K' && next <= 'O') {
|
// %K to %O map to [ \ ] ^ _
|
decodedChar = String.fromCharCode(next.charCodeAt(0) + 16);
|
}
|
else if (next >= 'P' && next <= 'T') {
|
// %P to %T map to { | } ~ DEL
|
decodedChar = String.fromCharCode(next.charCodeAt(0) + 43);
|
}
|
else if (next === 'U') {
|
// %U map to NUL
|
decodedChar = '\0';
|
}
|
else if (next === 'V') {
|
// %V map to @
|
decodedChar = '@';
|
}
|
else if (next === 'W') {
|
// %W map to `
|
decodedChar = '`';
|
}
|
else if (next >= 'X' && next <= 'Z') {
|
// %X to %Z all map to DEL (127)
|
decodedChar = String.fromCharCode(127);
|
}
|
else {
|
throw new FormatException_1.default();
|
}
|
break;
|
case 'c':
|
// /A to /O map to ! to , and /Z maps to :
|
if (next >= 'A' && next <= 'O') {
|
decodedChar = String.fromCharCode(next.charCodeAt(0) - 32);
|
}
|
else if (next === 'Z') {
|
decodedChar = ':';
|
}
|
else {
|
throw new FormatException_1.default();
|
}
|
break;
|
}
|
decoded += decodedChar;
|
// bump up i again since we read two characters
|
i++;
|
}
|
else {
|
decoded += c;
|
}
|
}
|
return decoded;
|
};
|
Code93Reader.prototype.checkChecksums = function (result) {
|
var length = result.length;
|
this.checkOneChecksum(result, length - 2, 20);
|
this.checkOneChecksum(result, length - 1, 15);
|
};
|
Code93Reader.prototype.checkOneChecksum = function (result, checkPosition, weightMax) {
|
var weight = 1;
|
var total = 0;
|
for (var i = checkPosition - 1; i >= 0; i--) {
|
total += weight * Code93Reader.ALPHABET_STRING.indexOf(result.charAt(i));
|
if (++weight > weightMax) {
|
weight = 1;
|
}
|
}
|
if (result.charAt(checkPosition) !== Code93Reader.ALPHABET_STRING[total % 47]) {
|
throw new ChecksumException_1.default;
|
}
|
};
|
// Note that 'abcd' are dummy characters in place of control characters.
|
Code93Reader.ALPHABET_STRING = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%abcd*";
|
/**
|
* These represent the encodings of characters, as patterns of wide and narrow bars.
|
* The 9 least-significant bits of each int correspond to the pattern of wide and narrow.
|
*/
|
Code93Reader.CHARACTER_ENCODINGS = [
|
0x114, 0x148, 0x144, 0x142, 0x128, 0x124, 0x122, 0x150, 0x112, 0x10A,
|
0x1A8, 0x1A4, 0x1A2, 0x194, 0x192, 0x18A, 0x168, 0x164, 0x162, 0x134,
|
0x11A, 0x158, 0x14C, 0x146, 0x12C, 0x116, 0x1B4, 0x1B2, 0x1AC, 0x1A6,
|
0x196, 0x19A, 0x16C, 0x166, 0x136, 0x13A,
|
0x12E, 0x1D4, 0x1D2, 0x1CA, 0x16E, 0x176, 0x1AE,
|
0x126, 0x1DA, 0x1D6, 0x132, 0x15E,
|
];
|
Code93Reader.ASTERISK_ENCODING = Code93Reader.CHARACTER_ENCODINGS[47];
|
return Code93Reader;
|
}(OneDReader_1.default));
|
exports.default = Code93Reader;
|
