"use strict";
|
Object.defineProperty(exports, "__esModule", { value: true });
|
var FormatException_1 = require("../../../../FormatException");
|
var IllegalStateException_1 = require("../../../../IllegalStateException");
|
var StringBuilder_1 = require("../../../../util/StringBuilder");
|
var BlockParsedResult_1 = require("./BlockParsedResult");
|
var DecodedChar_1 = require("./DecodedChar");
|
var DecodedInformation_1 = require("./DecodedInformation");
|
var DecodedNumeric_1 = require("./DecodedNumeric");
|
var FieldParser_1 = require("./FieldParser");
|
var GeneralAppIdDecoder = /** @class */ (function () {
|
function GeneralAppIdDecoder(information) {
|
this.buffer = new StringBuilder_1.default();
|
this.information = information;
|
}
|
GeneralAppIdDecoder.prototype.decodeAllCodes = function (buff, initialPosition) {
|
var currentPosition = initialPosition;
|
var remaining = null;
|
do {
|
var info = this.decodeGeneralPurposeField(currentPosition, remaining);
|
var parsedFields = FieldParser_1.default.parseFieldsInGeneralPurpose(info.getNewString());
|
if (parsedFields != null) {
|
buff.append(parsedFields);
|
}
|
if (info.isRemaining()) {
|
remaining = '' + info.getRemainingValue();
|
}
|
else {
|
remaining = null;
|
}
|
if (currentPosition === info.getNewPosition()) { // No step forward!
|
break;
|
}
|
currentPosition = info.getNewPosition();
|
} while (true);
|
return buff.toString();
|
};
|
GeneralAppIdDecoder.prototype.isStillNumeric = function (pos) {
|
// It's numeric if it still has 7 positions
|
// and one of the first 4 bits is "1".
|
if (pos + 7 > this.information.getSize()) {
|
return pos + 4 <= this.information.getSize();
|
}
|
for (var i = pos; i < pos + 3; ++i) {
|
if (this.information.get(i)) {
|
return true;
|
}
|
}
|
return this.information.get(pos + 3);
|
};
|
GeneralAppIdDecoder.prototype.decodeNumeric = function (pos) {
|
if (pos + 7 > this.information.getSize()) {
|
var numeric_1 = this.extractNumericValueFromBitArray(pos, 4);
|
if (numeric_1 === 0) {
|
return new DecodedNumeric_1.default(this.information.getSize(), DecodedNumeric_1.default.FNC1, DecodedNumeric_1.default.FNC1);
|
}
|
return new DecodedNumeric_1.default(this.information.getSize(), numeric_1 - 1, DecodedNumeric_1.default.FNC1);
|
}
|
var numeric = this.extractNumericValueFromBitArray(pos, 7);
|
var digit1 = (numeric - 8) / 11;
|
var digit2 = (numeric - 8) % 11;
|
return new DecodedNumeric_1.default(pos + 7, digit1, digit2);
|
};
|
GeneralAppIdDecoder.prototype.extractNumericValueFromBitArray = function (pos, bits) {
|
return GeneralAppIdDecoder.extractNumericValueFromBitArray(this.information, pos, bits);
|
};
|
GeneralAppIdDecoder.extractNumericValueFromBitArray = function (information, pos, bits) {
|
var value = 0;
|
for (var i = 0; i < bits; ++i) {
|
if (information.get(pos + i)) {
|
value |= 1 << (bits - i - 1);
|
}
|
}
|
return value;
|
};
|
GeneralAppIdDecoder.prototype.decodeGeneralPurposeField = function (pos, remaining) {
|
// this.buffer.setLength(0);
|
this.buffer.setLengthToZero();
|
if (remaining != null) {
|
this.buffer.append(remaining);
|
}
|
this.current.setPosition(pos);
|
var lastDecoded = this.parseBlocks();
|
if (lastDecoded != null && lastDecoded.isRemaining()) {
|
return new DecodedInformation_1.default(this.current.getPosition(), this.buffer.toString(), lastDecoded.getRemainingValue());
|
}
|
return new DecodedInformation_1.default(this.current.getPosition(), this.buffer.toString());
|
};
|
GeneralAppIdDecoder.prototype.parseBlocks = function () {
|
var isFinished;
|
var result;
|
do {
|
var initialPosition = this.current.getPosition();
|
if (this.current.isAlpha()) {
|
result = this.parseAlphaBlock();
|
isFinished = result.isFinished();
|
}
|
else if (this.current.isIsoIec646()) {
|
result = this.parseIsoIec646Block();
|
isFinished = result.isFinished();
|
}
|
else { // it must be numeric
|
result = this.parseNumericBlock();
|
isFinished = result.isFinished();
|
}
|
var positionChanged = initialPosition !== this.current.getPosition();
|
if (!positionChanged && !isFinished) {
|
break;
|
}
|
} while (!isFinished);
|
return result.getDecodedInformation();
|
};
|
GeneralAppIdDecoder.prototype.parseNumericBlock = function () {
|
while (this.isStillNumeric(this.current.getPosition())) {
|
var numeric = this.decodeNumeric(this.current.getPosition());
|
this.current.setPosition(numeric.getNewPosition());
|
if (numeric.isFirstDigitFNC1()) {
|
var information = void 0;
|
if (numeric.isSecondDigitFNC1()) {
|
information = new DecodedInformation_1.default(this.current.getPosition(), this.buffer.toString());
|
}
|
else {
|
information = new DecodedInformation_1.default(this.current.getPosition(), this.buffer.toString(), numeric.getSecondDigit());
|
}
|
return new BlockParsedResult_1.default(true, information);
|
}
|
this.buffer.append(numeric.getFirstDigit());
|
if (numeric.isSecondDigitFNC1()) {
|
var information = new DecodedInformation_1.default(this.current.getPosition(), this.buffer.toString());
|
return new BlockParsedResult_1.default(true, information);
|
}
|
this.buffer.append(numeric.getSecondDigit());
|
}
|
if (this.isNumericToAlphaNumericLatch(this.current.getPosition())) {
|
this.current.setAlpha();
|
this.current.incrementPosition(4);
|
}
|
return new BlockParsedResult_1.default(false);
|
};
|
GeneralAppIdDecoder.prototype.parseIsoIec646Block = function () {
|
while (this.isStillIsoIec646(this.current.getPosition())) {
|
var iso = this.decodeIsoIec646(this.current.getPosition());
|
this.current.setPosition(iso.getNewPosition());
|
if (iso.isFNC1()) {
|
var information = new DecodedInformation_1.default(this.current.getPosition(), this.buffer.toString());
|
return new BlockParsedResult_1.default(true, information);
|
}
|
this.buffer.append(iso.getValue());
|
}
|
if (this.isAlphaOr646ToNumericLatch(this.current.getPosition())) {
|
this.current.incrementPosition(3);
|
this.current.setNumeric();
|
}
|
else if (this.isAlphaTo646ToAlphaLatch(this.current.getPosition())) {
|
if (this.current.getPosition() + 5 < this.information.getSize()) {
|
this.current.incrementPosition(5);
|
}
|
else {
|
this.current.setPosition(this.information.getSize());
|
}
|
this.current.setAlpha();
|
}
|
return new BlockParsedResult_1.default(false);
|
};
|
GeneralAppIdDecoder.prototype.parseAlphaBlock = function () {
|
while (this.isStillAlpha(this.current.getPosition())) {
|
var alpha = this.decodeAlphanumeric(this.current.getPosition());
|
this.current.setPosition(alpha.getNewPosition());
|
if (alpha.isFNC1()) {
|
var information = new DecodedInformation_1.default(this.current.getPosition(), this.buffer.toString());
|
return new BlockParsedResult_1.default(true, information); // end of the char block
|
}
|
this.buffer.append(alpha.getValue());
|
}
|
if (this.isAlphaOr646ToNumericLatch(this.current.getPosition())) {
|
this.current.incrementPosition(3);
|
this.current.setNumeric();
|
}
|
else if (this.isAlphaTo646ToAlphaLatch(this.current.getPosition())) {
|
if (this.current.getPosition() + 5 < this.information.getSize()) {
|
this.current.incrementPosition(5);
|
}
|
else {
|
this.current.setPosition(this.information.getSize());
|
}
|
this.current.setIsoIec646();
|
}
|
return new BlockParsedResult_1.default(false);
|
};
|
GeneralAppIdDecoder.prototype.isStillIsoIec646 = function (pos) {
|
if (pos + 5 > this.information.getSize()) {
|
return false;
|
}
|
var fiveBitValue = this.extractNumericValueFromBitArray(pos, 5);
|
if (fiveBitValue >= 5 && fiveBitValue < 16) {
|
return true;
|
}
|
if (pos + 7 > this.information.getSize()) {
|
return false;
|
}
|
var sevenBitValue = this.extractNumericValueFromBitArray(pos, 7);
|
if (sevenBitValue >= 64 && sevenBitValue < 116) {
|
return true;
|
}
|
if (pos + 8 > this.information.getSize()) {
|
return false;
|
}
|
var eightBitValue = this.extractNumericValueFromBitArray(pos, 8);
|
return eightBitValue >= 232 && eightBitValue < 253;
|
};
|
GeneralAppIdDecoder.prototype.decodeIsoIec646 = function (pos) {
|
var fiveBitValue = this.extractNumericValueFromBitArray(pos, 5);
|
if (fiveBitValue === 15) {
|
return new DecodedChar_1.default(pos + 5, DecodedChar_1.default.FNC1);
|
}
|
if (fiveBitValue >= 5 && fiveBitValue < 15) {
|
return new DecodedChar_1.default(pos + 5, ('0' + (fiveBitValue - 5)));
|
}
|
var sevenBitValue = this.extractNumericValueFromBitArray(pos, 7);
|
if (sevenBitValue >= 64 && sevenBitValue < 90) {
|
return new DecodedChar_1.default(pos + 7, ('' + (sevenBitValue + 1)));
|
}
|
if (sevenBitValue >= 90 && sevenBitValue < 116) {
|
return new DecodedChar_1.default(pos + 7, ('' + (sevenBitValue + 7)));
|
}
|
var eightBitValue = this.extractNumericValueFromBitArray(pos, 8);
|
var c;
|
switch (eightBitValue) {
|
case 232:
|
c = '!';
|
break;
|
case 233:
|
c = '"';
|
break;
|
case 234:
|
c = '%';
|
break;
|
case 235:
|
c = '&';
|
break;
|
case 236:
|
c = '\'';
|
break;
|
case 237:
|
c = '(';
|
break;
|
case 238:
|
c = ')';
|
break;
|
case 239:
|
c = '*';
|
break;
|
case 240:
|
c = '+';
|
break;
|
case 241:
|
c = ',';
|
break;
|
case 242:
|
c = '-';
|
break;
|
case 243:
|
c = '.';
|
break;
|
case 244:
|
c = '/';
|
break;
|
case 245:
|
c = ':';
|
break;
|
case 246:
|
c = ';';
|
break;
|
case 247:
|
c = '<';
|
break;
|
case 248:
|
c = '=';
|
break;
|
case 249:
|
c = '>';
|
break;
|
case 250:
|
c = '?';
|
break;
|
case 251:
|
c = '_';
|
break;
|
case 252:
|
c = ' ';
|
break;
|
default:
|
throw new FormatException_1.default();
|
}
|
return new DecodedChar_1.default(pos + 8, c);
|
};
|
GeneralAppIdDecoder.prototype.isStillAlpha = function (pos) {
|
if (pos + 5 > this.information.getSize()) {
|
return false;
|
}
|
// We now check if it's a valid 5-bit value (0..9 and FNC1)
|
var fiveBitValue = this.extractNumericValueFromBitArray(pos, 5);
|
if (fiveBitValue >= 5 && fiveBitValue < 16) {
|
return true;
|
}
|
if (pos + 6 > this.information.getSize()) {
|
return false;
|
}
|
var sixBitValue = this.extractNumericValueFromBitArray(pos, 6);
|
return sixBitValue >= 16 && sixBitValue < 63; // 63 not included
|
};
|
GeneralAppIdDecoder.prototype.decodeAlphanumeric = function (pos) {
|
var fiveBitValue = this.extractNumericValueFromBitArray(pos, 5);
|
if (fiveBitValue === 15) {
|
return new DecodedChar_1.default(pos + 5, DecodedChar_1.default.FNC1);
|
}
|
if (fiveBitValue >= 5 && fiveBitValue < 15) {
|
return new DecodedChar_1.default(pos + 5, ('0' + (fiveBitValue - 5)));
|
}
|
var sixBitValue = this.extractNumericValueFromBitArray(pos, 6);
|
if (sixBitValue >= 32 && sixBitValue < 58) {
|
return new DecodedChar_1.default(pos + 6, ('' + (sixBitValue + 33)));
|
}
|
var c;
|
switch (sixBitValue) {
|
case 58:
|
c = '*';
|
break;
|
case 59:
|
c = ',';
|
break;
|
case 60:
|
c = '-';
|
break;
|
case 61:
|
c = '.';
|
break;
|
case 62:
|
c = '/';
|
break;
|
default:
|
throw new IllegalStateException_1.default('Decoding invalid alphanumeric value: ' + sixBitValue);
|
}
|
return new DecodedChar_1.default(pos + 6, c);
|
};
|
GeneralAppIdDecoder.prototype.isAlphaTo646ToAlphaLatch = function (pos) {
|
if (pos + 1 > this.information.getSize()) {
|
return false;
|
}
|
for (var i = 0; i < 5 && i + pos < this.information.getSize(); ++i) {
|
if (i === 2) {
|
if (!this.information.get(pos + 2)) {
|
return false;
|
}
|
}
|
else if (this.information.get(pos + i)) {
|
return false;
|
}
|
}
|
return true;
|
};
|
GeneralAppIdDecoder.prototype.isAlphaOr646ToNumericLatch = function (pos) {
|
// Next is alphanumeric if there are 3 positions and they are all zeros
|
if (pos + 3 > this.information.getSize()) {
|
return false;
|
}
|
for (var i = pos; i < pos + 3; ++i) {
|
if (this.information.get(i)) {
|
return false;
|
}
|
}
|
return true;
|
};
|
GeneralAppIdDecoder.prototype.isNumericToAlphaNumericLatch = function (pos) {
|
// Next is alphanumeric if there are 4 positions and they are all zeros, or
|
// if there is a subset of this just before the end of the symbol
|
if (pos + 1 > this.information.getSize()) {
|
return false;
|
}
|
for (var i = 0; i < 4 && i + pos < this.information.getSize(); ++i) {
|
if (this.information.get(pos + i)) {
|
return false;
|
}
|
}
|
return true;
|
};
|
return GeneralAppIdDecoder;
|
}());
|
exports.default = GeneralAppIdDecoder;
|
