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javascript-barcode-reader

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Comparing version 0.4.14 to 0.4.15

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dist/javascript-barcode-reader.js
var javascriptBarcodeReader = (function (jimp) {
'use strict';
'use strict';
jimp = jimp && jimp.hasOwnProperty('default') ? jimp['default'] : jimp;
jimp = jimp && jimp.hasOwnProperty('default') ? jimp['default'] : jimp;
function _typeof(obj) {
if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
_typeof = function (obj) {
return typeof obj;
};
} else {
_typeof = function (obj) {
return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
};
}
var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
return _typeof(obj);
}
function createCommonjsModule(fn, module) {
return module = { exports: {} }, fn(module, module.exports), module.exports;
}
function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
try {
var info = gen[key](arg);
var value = info.value;
} catch (error) {
reject(error);
return;
}
var runtime_1 = createCommonjsModule(function (module) {
/**
* Copyright (c) 2014-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
var runtime = function (exports) {
if (info.done) {
resolve(value);
} else {
Promise.resolve(value).then(_next, _throw);
}
}
var Op = Object.prototype;
var hasOwn = Op.hasOwnProperty;
var undefined$1; // More compressible than void 0.
function _asyncToGenerator(fn) {
return function () {
var self = this,
args = arguments;
return new Promise(function (resolve, reject) {
var gen = fn.apply(self, args);
var $Symbol = typeof Symbol === "function" ? Symbol : {};
var iteratorSymbol = $Symbol.iterator || "@@iterator";
var asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator";
var toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag";
function _next(value) {
asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
}
function wrap(innerFn, outerFn, self, tryLocsList) {
// If outerFn provided and outerFn.prototype is a Generator, then outerFn.prototype instanceof Generator.
var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;
var generator = Object.create(protoGenerator.prototype);
var context = new Context(tryLocsList || []); // The ._invoke method unifies the implementations of the .next,
// .throw, and .return methods.
function _throw(err) {
asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
}
generator._invoke = makeInvokeMethod(innerFn, self, context);
return generator;
}
_next(undefined);
});
};
}
exports.wrap = wrap; // Try/catch helper to minimize deoptimizations. Returns a completion
// record like context.tryEntries[i].completion. This interface could
// have been (and was previously) designed to take a closure to be
// invoked without arguments, but in all the cases we care about we
// already have an existing method we want to call, so there's no need
// to create a new function object. We can even get away with assuming
// the method takes exactly one argument, since that happens to be true
// in every case, so we don't have to touch the arguments object. The
// only additional allocation required is the completion record, which
// has a stable shape and so hopefully should be cheap to allocate.
var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
function tryCatch(fn, obj, arg) {
try {
return {
type: "normal",
arg: fn.call(obj, arg)
};
} catch (err) {
return {
type: "throw",
arg: err
};
}
}
function createCommonjsModule(fn, module) {
return module = { exports: {} }, fn(module, module.exports), module.exports;
}
var GenStateSuspendedStart = "suspendedStart";
var GenStateSuspendedYield = "suspendedYield";
var GenStateExecuting = "executing";
var GenStateCompleted = "completed"; // Returning this object from the innerFn has the same effect as
// breaking out of the dispatch switch statement.
var isNode = (typeof process === "undefined" ? "undefined" : _typeof(process)) === 'object' && process.release && process.release.name === 'node'; // check if string is url
var ContinueSentinel = {}; // Dummy constructor functions that we use as the .constructor and
// .constructor.prototype properties for functions that return Generator
// objects. For full spec compliance, you may wish to configure your
// minifier not to mangle the names of these two functions.
function isUrl(s) {
var regexp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-/]))?/;
return !s[0] === '#' || regexp.test(s);
}
/**
* Creates image data from HTML image
* @param {HTMLImageElement} image HTML Image element
*/
function Generator() {}
function GeneratorFunction() {}
function createImageData(image) {
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
var width = image.naturalWidth;
var height = image.naturalHeight;
canvas.width = width;
canvas.height = height;
ctx.drawImage(image, 0, 0);
return ctx.getImageData(0, 0, image.naturalWidth, image.naturalHeight);
}
/**
* Reads image source and returns imageData as only callback parameter
* @param {*} source Image source
* @param {Function} callback Callback to pass the imageData
*/
function GeneratorFunctionPrototype() {} // This is a polyfill for %IteratorPrototype% for environments that
// don't natively support it.
function getImageDataFromSource(_x) {
return _getImageDataFromSource.apply(this, arguments);
}
var IteratorPrototype = {};
function _getImageDataFromSource() {
_getImageDataFromSource = _asyncToGenerator(
/*#__PURE__*/
regeneratorRuntime.mark(function _callee(source) {
var isStringSource, isURLSource, tagName;
return regeneratorRuntime.wrap(function _callee$(_context) {
while (1) {
switch (_context.prev = _context.next) {
case 0:
isStringSource = typeof source === 'string';
isURLSource = isStringSource ? isUrl(source) : false;
tagName = source.tagName;
return _context.abrupt("return", new Promise(function (resolve, reject) {
// String source
if (isStringSource) {
// Read file in Node.js
if (isNode) {
jimp.read(isURLSource ? {
url: source,
headers: {}
} : source, function (err, image) {
if (err) {
reject(err);
} else {
var _image$bitmap = image.bitmap,
data = _image$bitmap.data,
width = _image$bitmap.width,
height = _image$bitmap.height;
resolve({
data: data.toJSON().data,
width: width,
height: height
});
}
});
} else if (isURLSource) {
// Load Image from source
var img = new Image();
img.onerror = reject;
IteratorPrototype[iteratorSymbol] = function () {
return this;
};
img.onload = function () {
return resolve(createImageData(img));
};
var getProto = Object.getPrototypeOf;
var NativeIteratorPrototype = getProto && getProto(getProto(values([])));
img.src = source;
} else {
// Find Elment by ID
var imgElem = document.getElementById(source);
if (NativeIteratorPrototype && NativeIteratorPrototype !== Op && hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {
// This environment has a native %IteratorPrototype%; use it instead
// of the polyfill.
IteratorPrototype = NativeIteratorPrototype;
}
if (imgElem) {
resolve(createImageData(imgElem));
}
var Gp = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(IteratorPrototype);
GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;
GeneratorFunctionPrototype.constructor = GeneratorFunction;
GeneratorFunctionPrototype[toStringTagSymbol] = GeneratorFunction.displayName = "GeneratorFunction"; // Helper for defining the .next, .throw, and .return methods of the
// Iterator interface in terms of a single ._invoke method.
reject(new Error('Invalid image source specified!'));
}
} else if (tagName) {
// HTML Image element
if (tagName === 'IMG') {
resolve(createImageData(source));
} // HTML Canvas element
else if (tagName === 'CANVAS') {
resolve(source.getContext('2d').getImageData(0, 0, source.naturalWidth, source.naturalHeight));
}
function defineIteratorMethods(prototype) {
["next", "throw", "return"].forEach(function (method) {
prototype[method] = function (arg) {
return this._invoke(method, arg);
};
});
}
reject(new Error('Invalid image source specified!'));
} // Pixel Data
else if (source.data && source.width && source.height) {
resolve(source);
} else {
reject(new Error('Invalid image source specified!'));
}
}));
exports.isGeneratorFunction = function (genFun) {
var ctor = typeof genFun === "function" && genFun.constructor;
return ctor ? ctor === GeneratorFunction || // For the native GeneratorFunction constructor, the best we can
// do is to check its .name property.
(ctor.displayName || ctor.name) === "GeneratorFunction" : false;
};
case 4:
case "end":
return _context.stop();
}
}
}, _callee);
}));
return _getImageDataFromSource.apply(this, arguments);
}
exports.mark = function (genFun) {
if (Object.setPrototypeOf) {
Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);
} else {
genFun.__proto__ = GeneratorFunctionPrototype;
function getLines(obj) {
var data = obj.data,
start = obj.start,
end = obj.end,
channels = obj.channels,
width = obj.width;
var pxLine = data.slice(start, end);
var sum = [];
var bmp = [];
var lines = [];
var count = 1;
var min = 0;
var max = 0;
var padding = {
left: true,
right: true // grey scale section and sum of columns pixels in section
if (!(toStringTagSymbol in genFun)) {
genFun[toStringTagSymbol] = "GeneratorFunction";
}
}
};
genFun.prototype = Object.create(Gp);
return genFun;
}; // Within the body of any async function, `await x` is transformed to
// `yield regeneratorRuntime.awrap(x)`, so that the runtime can test
// `hasOwn.call(value, "__await")` to determine if the yielded value is
// meant to be awaited.
for (var row = 0; row < 2; row += 1) {
for (var col = 0; col < width; col += 1) {
var i = (row * width + col) * channels;
var g = (pxLine[i] * 3 + pxLine[i + 1] * 4 + pxLine[i + 2] * 2) / 9;
var s = sum[col];
pxLine[i] = g;
pxLine[i + 1] = g;
pxLine[i + 2] = g;
sum[col] = g + (s || 0);
}
}
for (var _i = 0; _i < width; _i += 1) {
sum[_i] /= 2;
var _s = sum[_i];
exports.awrap = function (arg) {
return {
__await: arg
};
};
if (_s < min) {
min = _s;
} else {
max = _s;
}
} // matches columns in two rows
function AsyncIterator(generator) {
function invoke(method, arg, resolve, reject) {
var record = tryCatch(generator[method], generator, arg);
if (record.type === "throw") {
reject(record.arg);
} else {
var result = record.arg;
var value = result.value;
var pivot = min + (max - min) / 2;
if (value && typeof value === "object" && hasOwn.call(value, "__await")) {
return Promise.resolve(value.__await).then(function (value) {
invoke("next", value, resolve, reject);
}, function (err) {
invoke("throw", err, resolve, reject);
});
}
for (var _col = 0; _col < width; _col += 1) {
var matches = 0;
var value = void 0;
return Promise.resolve(value).then(function (unwrapped) {
// When a yielded Promise is resolved, its final value becomes
// the .value of the Promise<{value,done}> result for the
// current iteration.
result.value = unwrapped;
resolve(result);
}, function (error) {
// If a rejected Promise was yielded, throw the rejection back
// into the async generator function so it can be handled there.
return invoke("throw", error, resolve, reject);
});
}
}
for (var _row = 0; _row < 2; _row += 1) {
value = pxLine[(_row * width + _col) * channels];
var previousPromise;
if (value > pivot) {
matches += 1;
}
}
function enqueue(method, arg) {
function callInvokeWithMethodAndArg() {
return new Promise(function (resolve, reject) {
invoke(method, arg, resolve, reject);
});
}
if (_col === 0 && value <= pivot) padding.left = false;
return previousPromise = // If enqueue has been called before, then we want to wait until
// all previous Promises have been resolved before calling invoke,
// so that results are always delivered in the correct order. If
// enqueue has not been called before, then it is important to
// call invoke immediately, without waiting on a callback to fire,
// so that the async generator function has the opportunity to do
// any necessary setup in a predictable way. This predictability
// is why the Promise constructor synchronously invokes its
// executor callback, and why async functions synchronously
// execute code before the first await. Since we implement simple
// async functions in terms of async generators, it is especially
// important to get this right, even though it requires care.
previousPromise ? previousPromise.then(callInvokeWithMethodAndArg, // Avoid propagating failures to Promises returned by later
// invocations of the iterator.
callInvokeWithMethodAndArg) : callInvokeWithMethodAndArg();
} // Define the unified helper method that is used to implement .next,
// .throw, and .return (see defineIteratorMethods).
if (_col === width - 1 && value <= pivot) {
padding.right = false;
}
bmp.push(matches > 1);
} // matches width of barcode lines
this._invoke = enqueue;
}
defineIteratorMethods(AsyncIterator.prototype);
var curr = bmp[0];
AsyncIterator.prototype[asyncIteratorSymbol] = function () {
return this;
};
for (var _col2 = 0; _col2 < width; _col2 += 1) {
if (bmp[_col2] === curr) {
count += 1;
exports.AsyncIterator = AsyncIterator; // Note that simple async functions are implemented on top of
// AsyncIterator objects; they just return a Promise for the value of
// the final result produced by the iterator.
if (_col2 === width - 1) {
lines.push(count);
}
} else {
lines.push(count);
count = 1;
curr = bmp[_col2];
}
}
exports.async = function (innerFn, outerFn, self, tryLocsList) {
var iter = new AsyncIterator(wrap(innerFn, outerFn, self, tryLocsList));
return exports.isGeneratorFunction(outerFn) ? iter // If outerFn is a generator, return the full iterator.
: iter.next().then(function (result) {
return result.done ? result.value : iter.next();
});
};
return {
lines: lines,
padding: padding
};
}
function makeInvokeMethod(innerFn, self, context) {
var state = GenStateSuspendedStart;
return function invoke(method, arg) {
if (state === GenStateExecuting) {
throw new Error("Generator is already running");
}
var utiltities = {
getImageDataFromSource: getImageDataFromSource,
getLines: getLines
};
if (state === GenStateCompleted) {
if (method === "throw") {
throw arg;
} // Be forgiving, per 25.3.3.3.3 of the spec:
// https://people.mozilla.org/~jorendorff/es6-draft.html#sec-generatorresume
var WIDTH_TBL = ['212222', '222122', '222221', '121223', '121322', '131222', '122213', '122312', '132212', '221213', '221312', '231212', '112232', '122132', '122231', '113222', '123122', '123221', '223211', '221132', '221231', '213212', '223112', '312131', '311222', '321122', '321221', '312212', '322112', '322211', '212123', '212321', '232121', '111323', '131123', '131321', '112313', '132113', '132311', '211313', '231113', '231311', '112133', '112331', '132131', '113123', '113321', '133121', '313121', '211331', '231131', '213113', '213311', '213131', '311123', '311321', '331121', '312113', '312311', '332111', '314111', '221411', '431111', '111224', '111422', '121124', '121421', '141122', '141221', '112214', '112412', '122114', '122411', '142112', '142211', '241211', '221114', '413111', '241112', '134111', '111242', '121142', '121241', '114212', '124112', '124211', '411212', '421112', '421211', '212141', '214121', '412121', '111143', '111341', '131141', '114113', '114311', '411113', '411311', '113141', '114131', '311141', '411131', '211412', '211214', '211232', '233111', '211133', '2331112'];
var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hift B', 'Code C', 'Code B', 'FNC 4', 'FNC 1'];
var TBL_B = [' ', '!', '"', '#', '$', '%', '&', "'", '(', ')', '*', '+', ',', '-', '.', '/', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?', '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', '_', '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', 'DEL', 'FNC 3', 'FNC 2', 'Shift A', 'Code C', 'FNC 4', 'Code A', 'FNC 1'];
var TBL_C = ['00', '01', '02', '03', '04', '05', '06', '07', '08', '09', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '30', '31', '32', '33', '34', '35', '36', '37', '38', '39', '40', '41', '42', '43', '44', '45', '46', '47', '48', '49', '50', '51', '52', '53', '54', '55', '56', '57', '58', '59', '60', '61', '62', '63', '64', '65', '66', '67', '68', '69', '70', '71', '72', '73', '74', '75', '76', '77', '78', '79', '80', '81', '82', '83', '84', '85', '86', '87', '88', '89', '90', '91', '92', '93', '94', '95', '96', '97', '98', '99', 'Code B', 'Code A', 'FNC 1'];
var computeGroup = function computeGroup(lines) {
// sum of a group in code-128 must be 11
var factor = lines.reduce(function (pre, item) {
return pre + item;
}, 0) / 11; //
return doneResult();
}
return lines.map(function (item) {
return Math.round(item / factor);
}).join('');
};
context.method = method;
context.arg = arg;
var code128 = function code128(lines) {
var lookupTBL;
var sumOP;
var letterKey;
var letterCode;
var keyIndex;
var code = []; // extract terminal bar
while (true) {
var delegate = context.delegate;
lines.pop();
var seq = lines.slice(0);
letterKey = computeGroup(seq.splice(0, 6));
if (delegate) {
var delegateResult = maybeInvokeDelegate(delegate, context);
switch (letterKey) {
case '211214':
lookupTBL = TBL_B;
sumOP = 104;
break;
if (delegateResult) {
if (delegateResult === ContinueSentinel) continue;
return delegateResult;
}
}
case '211232':
lookupTBL = TBL_C;
sumOP = 105;
break;
if (context.method === "next") {
// Setting context._sent for legacy support of Babel's
// function.sent implementation.
context.sent = context._sent = context.arg;
} else if (context.method === "throw") {
if (state === GenStateSuspendedStart) {
state = GenStateCompleted;
throw context.arg;
}
default:
lookupTBL = TBL_A;
sumOP = 103;
break;
}
context.dispatchException(context.arg);
} else if (context.method === "return") {
context.abrupt("return", context.arg);
}
for (var i = 1; seq.length > 12; i += 1) {
letterKey = computeGroup(seq.splice(0, 6));
keyIndex = WIDTH_TBL.indexOf(letterKey);
sumOP += i * keyIndex;
letterCode = lookupTBL[keyIndex];
state = GenStateExecuting;
var record = tryCatch(innerFn, self, context);
switch (letterCode) {
case 'Code A':
lookupTBL = TBL_A;
break;
if (record.type === "normal") {
// If an exception is thrown from innerFn, we leave state ===
// GenStateExecuting and loop back for another invocation.
state = context.done ? GenStateCompleted : GenStateSuspendedYield;
case 'Code B':
lookupTBL = TBL_B;
break;
if (record.arg === ContinueSentinel) {
continue;
}
case 'Code C':
lookupTBL = TBL_C;
break;
return {
value: record.arg,
done: context.done
};
} else if (record.type === "throw") {
state = GenStateCompleted; // Dispatch the exception by looping back around to the
// context.dispatchException(context.arg) call above.
default:
code.push(letterCode);
break;
}
}
context.method = "throw";
context.arg = record.arg;
}
}
};
} // Call delegate.iterator[context.method](context.arg) and handle the
// result, either by returning a { value, done } result from the
// delegate iterator, or by modifying context.method and context.arg,
// setting context.delegate to null, and returning the ContinueSentinel.
letterKey = computeGroup(seq.splice(0, 6));
if (sumOP % 103 !== WIDTH_TBL.indexOf(letterKey)) return null;
return code.join('');
};
var CHAR_SET = ['nnwwn', 'wnnnw', 'nwnnw', 'wwnnn', 'nnwnw', 'wnwnn', 'nwwnn', 'nnnww', 'wnnwn', 'nwnwn'];
function maybeInvokeDelegate(delegate, context) {
var method = delegate.iterator[context.method];
var _2of5 = function _2of5(lines) {
var type = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'standard';
var code = [];
var barThreshold = Math.ceil(lines.reduce(function (pre, item) {
return (pre + item) / 2;
}, 0));
if (method === undefined$1) {
// A .throw or .return when the delegate iterator has no .throw
// method always terminates the yield* loop.
context.delegate = null;
if (type === 'interleaved') {
// extract start/ends pair
var startChar = lines.splice(0, 4).map(function (line) {
return line > barThreshold ? 'w' : 'n';
}).join('');
var endChar = lines.splice(lines.length - 3, 3).map(function (line) {
return line > barThreshold ? 'w' : 'n';
}).join('');
if (startChar !== 'nnnn' || endChar !== 'wnn') return null; // Read one encoded character at a time.
if (context.method === "throw") {
// Note: ["return"] must be used for ES3 parsing compatibility.
if (delegate.iterator["return"]) {
// If the delegate iterator has a return method, give it a
// chance to clean up.
context.method = "return";
context.arg = undefined$1;
maybeInvokeDelegate(delegate, context);
while (lines.length > 0) {
var seg = lines.splice(0, 10);
var a = seg.filter(function (item, index) {
return index % 2 === 0;
}).map(function (line) {
return line > barThreshold ? 'w' : 'n';
}).join('');
code.push(CHAR_SET.indexOf(a));
var b = seg.filter(function (item, index) {
return index % 2 !== 0;
}).map(function (line) {
return line > barThreshold ? 'w' : 'n';
}).join('');
code.push(CHAR_SET.indexOf(b));
}
} else if (type === 'standard') {
// extract start/ends pair
var _startChar = lines.splice(0, 6).filter(function (item, index) {
return index % 2 === 0;
}).map(function (line) {
return line > barThreshold ? 'w' : 'n';
}).join('');
if (context.method === "throw") {
// If maybeInvokeDelegate(context) changed context.method from
// "return" to "throw", let that override the TypeError below.
return ContinueSentinel;
}
}
var _endChar = lines.splice(lines.length - 5, 5).filter(function (item, index) {
return index % 2 === 0;
}).map(function (line) {
return line > barThreshold ? 'w' : 'n';
}).join('');
context.method = "throw";
context.arg = new TypeError("The iterator does not provide a 'throw' method");
}
if (_startChar !== 'wwn' || _endChar !== 'wnw') return null; // Read one encoded character at a time.
return ContinueSentinel;
}
while (lines.length > 0) {
var _a = lines.splice(0, 10).filter(function (item, index) {
return index % 2 === 0;
}).map(function (line) {
return line > barThreshold ? 'w' : 'n';
}).join('');
var record = tryCatch(method, delegate.iterator, context.arg);
code.push(CHAR_SET.indexOf(_a));
}
}
if (record.type === "throw") {
context.method = "throw";
context.arg = record.arg;
context.delegate = null;
return ContinueSentinel;
}
return code.join('');
};
var info = record.arg;
var CHAR_SET$1 = {
nnnwwnwnn: '0',
wnnwnnnnw: '1',
nnwwnnnnw: '2',
wnwwnnnnn: '3',
nnnwwnnnw: '4',
wnnwwnnnn: '5',
nnwwwnnnn: '6',
nnnwnnwnw: '7',
wnnwnnwnn: '8',
nnwwnnwnn: '9',
wnnnnwnnw: 'A',
nnwnnwnnw: 'B',
wnwnnwnnn: 'C',
nnnnwwnnw: 'D',
wnnnwwnnn: 'E',
nnwnwwnnn: 'F',
nnnnnwwnw: 'G',
wnnnnwwnn: 'H',
nnwnnwwnn: 'I',
nnnnwwwnn: 'J',
wnnnnnnww: 'K',
nnwnnnnww: 'L',
wnwnnnnwn: 'M',
nnnnwnnww: 'N',
wnnnwnnwn: 'O',
nnwnwnnwn: 'P',
nnnnnnwww: 'Q',
wnnnnnwwn: 'R',
nnwnnnwwn: 'S',
nnnnwnwwn: 'T',
wwnnnnnnw: 'U',
nwwnnnnnw: 'V',
wwwnnnnnn: 'W',
nwnnwnnnw: 'X',
wwnnwnnnn: 'Y',
nwwnwnnnn: 'Z',
nwnnnnwnw: '-',
wwnnnnwnn: '.',
nwwnnnwnn: ' ',
nwnwnwnnn: '$',
nwnwnnnwn: '/',
nwnnnwnwn: '+',
nnnwnwnwn: '%',
nwnnwnwnn: '*'
};
if (!info) {
context.method = "throw";
context.arg = new TypeError("iterator result is not an object");
context.delegate = null;
return ContinueSentinel;
}
var code39 = function code39(lines) {
var code = [];
var barThreshold = Math.ceil(lines.reduce(function (pre, item) {
return pre + item;
}, 0) / lines.length); // Read one encoded character at a time.
if (info.done) {
// Assign the result of the finished delegate to the temporary
// variable specified by delegate.resultName (see delegateYield).
context[delegate.resultName] = info.value; // Resume execution at the desired location (see delegateYield).
while (lines.length > 0) {
var sequenceBar = lines.splice(0, 10).map(function (line) {
return line > barThreshold ? 'w' : 'n';
});
code.push(CHAR_SET$1[sequenceBar.slice(0, 9).join('')]);
}
context.next = delegate.nextLoc; // If context.method was "throw" but the delegate handled the
// exception, let the outer generator proceed normally. If
// context.method was "next", forget context.arg since it has been
// "consumed" by the delegate iterator. If context.method was
// "return", allow the original .return call to continue in the
// outer generator.
if (code.pop() !== '*' || code.shift() !== '*') return null;
return code.join('');
};
if (context.method !== "return") {
context.method = "next";
context.arg = undefined$1;
}
} else {
// Re-yield the result returned by the delegate method.
return info;
} // The delegate iterator is finished, so forget it and continue with
// the outer generator.
var CHAR_SET$2 = [{
'100010100': '0'
}, {
'101001000': '1'
}, {
'101000100': '2'
}, {
'101000010': '3'
}, {
'100101000': '4'
}, {
'100100100': '5'
}, {
'100100010': '6'
}, {
'101010000': '7'
}, {
'100010010': '8'
}, {
'100001010': '9'
}, {
'110101000': 'A'
}, {
'110100100': 'B'
}, {
'110100010': 'C'
}, {
'110010100': 'D'
}, {
'110010010': 'E'
}, {
'110001010': 'F'
}, {
'101101000': 'G'
}, {
'101100100': 'H'
}, {
'101100010': 'I'
}, {
'100110100': 'J'
}, {
'100011010': 'K'
}, {
'101011000': 'L'
}, {
'101001100': 'M'
}, {
'101000110': 'N'
}, {
'100101100': 'O'
}, {
'100010110': 'P'
}, {
'110110100': 'Q'
}, {
'110110010': 'R'
}, {
'110101100': 'S'
}, {
'110100110': 'T'
}, {
'110010110': 'U'
}, {
'110011010': 'V'
}, {
'101101100': 'W'
}, {
'101100110': 'X'
}, {
'100110110': 'Y'
}, {
'100111010': 'Z'
}, {
'100101110': '-'
}, {
'111010100': '.'
}, {
'111010010': ' '
}, {
'111001010': '$'
}, {
'101101110': '/'
}, {
'101110110': '+'
}, {
'110101110': '%'
}, {
'100100110': '($)'
}, {
'111011010': '(%)'
}, {
'111010110': '(/)'
}, {
'100110010': '(+)'
}, {
'101011110': '*'
}];
var code93 = function code93(lines) {
var code = [];
var binary = []; // remove termination bar
context.delegate = null;
return ContinueSentinel;
} // Define Generator.prototype.{next,throw,return} in terms of the
// unified ._invoke helper method.
lines.pop();
var barThreshold = Math.ceil(lines.reduce(function (pre, item) {
return pre + item;
}, 0) / lines.length);
var minBarWidth = Math.ceil(lines.reduce(function (pre, item) {
if (item < barThreshold) return (pre + item) / 2;
return pre;
}, 0)); // leave the padded *
for (var i = 0; i < lines.length; i += 1) {
var segment = lines[i];
defineIteratorMethods(Gp);
Gp[toStringTagSymbol] = "Generator"; // A Generator should always return itself as the iterator object when the
// @@iterator function is called on it. Some browsers' implementations of the
// iterator prototype chain incorrectly implement this, causing the Generator
// object to not be returned from this call. This ensures that doesn't happen.
// See https://github.com/facebook/regenerator/issues/274 for more details.
while (segment > 0) {
if (i % 2 === 0) {
binary.push(1);
} else {
binary.push(0);
}
Gp[iteratorSymbol] = function () {
return this;
};
segment -= minBarWidth;
}
}
Gp.toString = function () {
return "[object Generator]";
};
var _loop = function _loop(_i) {
var searcKey = binary.slice(_i, _i + 9).join('');
var char = CHAR_SET$2.filter(function (item) {
return Object.keys(item)[0] === searcKey;
});
code.push(char[0][searcKey]);
};
function pushTryEntry(locs) {
var entry = {
tryLoc: locs[0]
};
for (var _i = 0; _i < binary.length; _i += 9) {
_loop(_i);
}
if (1 in locs) {
entry.catchLoc = locs[1];
}
if (code.shift() !== '*' || code.pop() !== '*') return null;
var K = code.pop();
var sum = 0;
var letter;
var Value;
if (2 in locs) {
entry.finallyLoc = locs[2];
entry.afterLoc = locs[3];
}
var findValue = function findValue(item) {
return Object.values(item)[0] === letter;
};
this.tryEntries.push(entry);
}
for (var _i2 = code.length - 1; _i2 >= 0; _i2 -= 1) {
letter = code[_i2];
Value = CHAR_SET$2.indexOf(CHAR_SET$2.filter(findValue)[0]);
sum += Value * (1 + (code.length - (_i2 + 1)) % 20);
}
function resetTryEntry(entry) {
var record = entry.completion || {};
record.type = "normal";
delete record.arg;
entry.completion = record;
}
if (Object.values(CHAR_SET$2[sum % 47])[0] !== K) return null;
var C = code.pop();
sum = 0;
function Context(tryLocsList) {
// The root entry object (effectively a try statement without a catch
// or a finally block) gives us a place to store values thrown from
// locations where there is no enclosing try statement.
this.tryEntries = [{
tryLoc: "root"
}];
tryLocsList.forEach(pushTryEntry, this);
this.reset(true);
}
for (var _i3 = code.length - 1; _i3 >= 0; _i3 -= 1) {
letter = code[_i3];
Value = CHAR_SET$2.indexOf(CHAR_SET$2.filter(findValue)[0]);
sum += Value * (1 + (code.length - (_i3 + 1)) % 20);
}
exports.keys = function (object) {
var keys = [];
if (Object.values(CHAR_SET$2[sum % 47])[0] !== C) return null;
return code.join('');
};
for (var key in object) {
keys.push(key);
}
var UPC_SET = {
'3211': '0',
'2221': '1',
'2122': '2',
'1411': '3',
'1132': '4',
'1231': '5',
'1114': '6',
'1312': '7',
'1213': '8',
'3112': '9'
};
keys.reverse(); // Rather than returning an object with a next method, we keep
// things simple and return the next function itself.
var ean13 = function ean13(lines) {
var code = ''; // manually add start dummy line
return function next() {
while (keys.length) {
var key = keys.pop();
lines.unshift(0); // start indicator/reference lines
if (key in object) {
next.value = key;
next.done = false;
return next;
}
} // To avoid creating an additional object, we just hang the .value
// and .done properties off the next function object itself. This
// also ensures that the minifier will not anonymize the function.
var bar = ~~((lines[1] + lines[2] + lines[3]) / 3); //eslint-disable-line
for (var i = 1; i < lines.length; i += 1) {
var group = void 0;
next.done = true;
return next;
};
};
if (code.length < 6) {
group = lines.slice(i * 4, i * 4 + 4);
} else {
group = lines.slice(i * 4 + 5, i * 4 + 9);
}
function values(iterable) {
if (iterable) {
var iteratorMethod = iterable[iteratorSymbol];
var digits = [Math.round(group[0] / bar), Math.round(group[1] / bar), Math.round(group[2] / bar), Math.round(group[3] / bar)];
var result = UPC_SET[digits.join('')] || UPC_SET[digits.reverse().join('')];
if (iteratorMethod) {
return iteratorMethod.call(iterable);
}
if (result) {
code += result;
}
if (typeof iterable.next === "function") {
return iterable;
}
if (code.length === 12) break;
}
if (!isNaN(iterable.length)) {
var i = -1,
next = function next() {
while (++i < iterable.length) {
if (hasOwn.call(iterable, i)) {
next.value = iterable[i];
next.done = false;
return next;
}
}
return code;
};
next.value = undefined$1;
next.done = true;
return next;
};
var UPC_SET$1 = {
'3211': '0',
'2221': '1',
'2122': '2',
'1411': '3',
'1132': '4',
'1231': '5',
'1114': '6',
'1312': '7',
'1213': '8',
'3112': '9'
};
return next.next = next;
}
} // Return an iterator with no values.
var ean8 = function ean8(lines) {
var code = ''; // manually add start dummy line
lines.unshift(0); // start indicator/reference lines
return {
next: doneResult
};
}
var bar = ~~((lines[1] + lines[2] + lines[3]) / 3); //eslint-disable-line
exports.values = values;
for (var i = 1; i < lines.length; i += 1) {
var group = void 0;
function doneResult() {
return {
value: undefined$1,
done: true
};
}
if (code.length < 4) {
group = lines.slice(i * 4, i * 4 + 4);
} else {
group = lines.slice(i * 4 + 5, i * 4 + 9);
}
Context.prototype = {
constructor: Context,
reset: function (skipTempReset) {
this.prev = 0;
this.next = 0; // Resetting context._sent for legacy support of Babel's
// function.sent implementation.
var digits = [Math.round(group[0] / bar), Math.round(group[1] / bar), Math.round(group[2] / bar), Math.round(group[3] / bar)];
var result = UPC_SET$1[digits.join('')] || UPC_SET$1[digits.reverse().join('')];
this.sent = this._sent = undefined$1;
this.done = false;
this.delegate = null;
this.method = "next";
this.arg = undefined$1;
this.tryEntries.forEach(resetTryEntry);
if (result) {
code += result;
}
if (!skipTempReset) {
for (var name in this) {
// Not sure about the optimal order of these conditions:
if (name.charAt(0) === "t" && hasOwn.call(this, name) && !isNaN(+name.slice(1))) {
this[name] = undefined$1;
}
}
}
},
stop: function () {
this.done = true;
var rootEntry = this.tryEntries[0];
var rootRecord = rootEntry.completion;
if (code.length === 8) break;
}
if (rootRecord.type === "throw") {
throw rootRecord.arg;
}
return code;
};
return this.rval;
},
dispatchException: function (exception) {
if (this.done) {
throw exception;
}
var CHAR_SET$3 = {
nnnnnww: '0',
nnnnwwn: '1',
nnnwnnw: '2',
wwnnnnn: '3',
nnwnnwn: '4',
wnnnnwn: '5',
nwnnnnw: '6',
nwnnwnn: '7',
nwwnnnn: '8',
wnnwnnn: '9',
nnnwwnn: '-',
nnwwnnn: '$',
wnnnwnw: ':',
wnwnnnw: '/',
wnwnwnn: '.',
nnwwwww: '+',
nnwwnwn: 'A',
nnnwnww: 'B',
nwnwnnw: 'C',
nnnwwwn: 'D'
};
var context = this;
var codabar = function codabar(lines) {
var code = [];
var barThreshold = Math.ceil(lines.reduce(function (pre, item) {
return (pre + item) / 2;
}, 0)); // Read one encoded character at a time.
function handle(loc, caught) {
record.type = "throw";
record.arg = exception;
context.next = loc;
while (lines.length > 0) {
var seg = lines.splice(0, 8).splice(0, 7);
var a = seg.map(function (line) {
return line < barThreshold ? 'n' : 'w';
}).join('');
code.push(CHAR_SET$3[a]);
}
if (caught) {
// If the dispatched exception was caught by a catch block,
// then let that catch block handle the exception normally.
context.method = "next";
context.arg = undefined$1;
}
return code.join('');
};
return !!caught;
}
var src = createCommonjsModule(function (module) {
/* eslint-disable */
var BARCODE_DECODERS = {
'code-128': code128,
'code-2of5': _2of5,
'code-39': code39,
'code-93': code93,
'ean-13': ean13,
'ean-8': ean8,
codabar: codabar
/* eslint-enable */
for (var i = this.tryEntries.length - 1; i >= 0; --i) {
var entry = this.tryEntries[i];
var record = entry.completion;
/**
* Scans and returns barcode from the provided image
*
* @param {*} image Image element || Canvas || ImageData || Image Path in Node.js
* @param {Object} options Options defining type of barcode to detect
* @param {String} options.barcode Barcode name
* @param {String=} options.type Type of Barcode
* @returns {String} Extracted barcode string
*/
if (entry.tryLoc === "root") {
// Exception thrown outside of any try block that could handle
// it, so set the completion value of the entire function to
// throw the exception.
return handle("end");
}
};
if (entry.tryLoc <= this.prev) {
var hasCatch = hasOwn.call(entry, "catchLoc");
var hasFinally = hasOwn.call(entry, "finallyLoc");
function barcodeDecoder(_x, _x2) {
return _barcodeDecoder.apply(this, arguments);
}
if (hasCatch && hasFinally) {
if (this.prev < entry.catchLoc) {
return handle(entry.catchLoc, true);
} else if (this.prev < entry.finallyLoc) {
return handle(entry.finallyLoc);
}
} else if (hasCatch) {
if (this.prev < entry.catchLoc) {
return handle(entry.catchLoc, true);
}
} else if (hasFinally) {
if (this.prev < entry.finallyLoc) {
return handle(entry.finallyLoc);
}
} else {
throw new Error("try statement without catch or finally");
}
}
}
},
abrupt: function (type, arg) {
for (var i = this.tryEntries.length - 1; i >= 0; --i) {
var entry = this.tryEntries[i];
function _barcodeDecoder() {
_barcodeDecoder = _asyncToGenerator(
/*#__PURE__*/
regeneratorRuntime.mark(function _callee(image, options) {
var list, _ref, data, width, height, channels, spoints, numLines, slineStep, start, end, _UTILITIES$getLines, lines, padding, result;
if (entry.tryLoc <= this.prev && hasOwn.call(entry, "finallyLoc") && this.prev < entry.finallyLoc) {
var finallyEntry = entry;
break;
}
}
return regeneratorRuntime.wrap(function _callee$(_context) {
while (1) {
switch (_context.prev = _context.next) {
case 0:
// eslint-disable-next-line
options.barcode = options.barcode.toLowerCase();
list = Object.keys(BARCODE_DECODERS);
if (finallyEntry && (type === "break" || type === "continue") && finallyEntry.tryLoc <= arg && arg <= finallyEntry.finallyLoc) {
// Ignore the finally entry if control is not jumping to a
// location outside the try/catch block.
finallyEntry = null;
}
if (!(list.indexOf(options.barcode) === -1)) {
_context.next = 4;
break;
}
var record = finallyEntry ? finallyEntry.completion : {};
record.type = type;
record.arg = arg;
throw new Error("Invalid barcode specified. Available decoders: ".concat(list, ". https://github.com/mubaidr/Javascript-Barcode-Reader#available-decoders"));
if (finallyEntry) {
this.method = "next";
this.next = finallyEntry.finallyLoc;
return ContinueSentinel;
}
case 4:
_context.next = 6;
return utiltities.getImageDataFromSource(image);
return this.complete(record);
},
complete: function (record, afterLoc) {
if (record.type === "throw") {
throw record.arg;
}
case 6:
_ref = _context.sent;
data = _ref.data;
width = _ref.width;
height = _ref.height;
channels = data.length / (width * height); // check points for barcode location
if (record.type === "break" || record.type === "continue") {
this.next = record.arg;
} else if (record.type === "return") {
this.rval = this.arg = record.arg;
this.method = "return";
this.next = "end";
} else if (record.type === "normal" && afterLoc) {
this.next = afterLoc;
}
spoints = [1, 9, 2, 8, 3, 7, 4, 6, 5];
numLines = spoints.length;
slineStep = height / (numLines + 1); // eslint-disable-next-line
return ContinueSentinel;
},
finish: function (finallyLoc) {
for (var i = this.tryEntries.length - 1; i >= 0; --i) {
var entry = this.tryEntries[i];
case 14:
if (!(numLines -= 1)) {
_context.next = 26;
break;
}
if (entry.finallyLoc === finallyLoc) {
this.complete(entry.completion, entry.afterLoc);
resetTryEntry(entry);
return ContinueSentinel;
}
}
},
"catch": function (tryLoc) {
for (var i = this.tryEntries.length - 1; i >= 0; --i) {
var entry = this.tryEntries[i];
// create section of height 2
start = channels * width * Math.floor(slineStep * spoints[numLines]);
end = channels * width * Math.floor(slineStep * spoints[numLines]) + 2 * channels * width; // const pxLine = data.slice(start, end)
// const { lines, padding } = UTILITIES.getLines({
if (entry.tryLoc === tryLoc) {
var record = entry.completion;
_UTILITIES$getLines = utiltities.getLines({
data: data,
start: start,
end: end,
width: width,
height: height,
channels: channels
}), lines = _UTILITIES$getLines.lines, padding = _UTILITIES$getLines.padding;
if (record.type === "throw") {
var thrown = record.arg;
resetTryEntry(entry);
}
if (!(lines && lines.length !== 0)) {
_context.next = 24;
break;
}
return thrown;
}
} // The context.catch method must only be called with a location
// argument that corresponds to a known catch block.
// remove empty whitespaces on side of barcode
if (padding.left) lines.shift();
if (padding.right) lines.pop(); // Run the decoder
result = BARCODE_DECODERS[options.barcode](lines, options.type);
throw new Error("illegal catch attempt");
},
delegateYield: function (iterable, resultName, nextLoc) {
this.delegate = {
iterator: values(iterable),
resultName: resultName,
nextLoc: nextLoc
};
if (!result) {
_context.next = 24;
break;
}
if (this.method === "next") {
// Deliberately forget the last sent value so that we don't
// accidentally pass it on to the delegate.
this.arg = undefined$1;
}
return _context.abrupt("return", result);
return ContinueSentinel;
}
}; // Regardless of whether this script is executing as a CommonJS module
// or not, return the runtime object so that we can declare the variable
// regeneratorRuntime in the outer scope, which allows this module to be
// injected easily by `bin/regenerator --include-runtime script.js`.
case 24:
_context.next = 14;
break;
return exports;
}( // If this script is executing as a CommonJS module, use module.exports
// as the regeneratorRuntime namespace. Otherwise create a new empty
// object. Either way, the resulting object will be used to initialize
// the regeneratorRuntime variable at the top of this file.
module.exports );
case 26:
throw new Error('Failed to extract barcode!');
try {
regeneratorRuntime = runtime;
} catch (accidentalStrictMode) {
// This module should not be running in strict mode, so the above
// assignment should always work unless something is misconfigured. Just
// in case runtime.js accidentally runs in strict mode, we can escape
// strict mode using a global Function call. This could conceivably fail
// if a Content Security Policy forbids using Function, but in that case
// the proper solution is to fix the accidental strict mode problem. If
// you've misconfigured your bundler to force strict mode and applied a
// CSP to forbid Function, and you're not willing to fix either of those
// problems, please detail your unique predicament in a GitHub issue.
Function("r", "regeneratorRuntime = r")(runtime);
}
});
case 27:
case "end":
return _context.stop();
}
}
}, _callee);
}));
return _barcodeDecoder.apply(this, arguments);
}
var regenerator = runtime_1;
if (module && module.exports) {
module.exports = barcodeDecoder;
} else {
commonjsGlobal.javascriptBarcodeReader = barcodeDecoder;
}
});
function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) {
try {
var info = gen[key](arg);
var value = info.value;
} catch (error) {
reject(error);
return;
}
return src;
if (info.done) {
resolve(value);
} else {
Promise.resolve(value).then(_next, _throw);
}
}
function _asyncToGenerator(fn) {
return function () {
var self = this,
args = arguments;
return new Promise(function (resolve, reject) {
var gen = fn.apply(self, args);
function _next(value) {
asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value);
}
function _throw(err) {
asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err);
}
_next(undefined);
});
};
}
var asyncToGenerator = _asyncToGenerator;
var _typeof_1 = createCommonjsModule(function (module) {
function _typeof2(obj) {
if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
_typeof2 = function _typeof2(obj) {
return typeof obj;
};
} else {
_typeof2 = function _typeof2(obj) {
return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
};
}
return _typeof2(obj);
}
function _typeof(obj) {
if (typeof Symbol === "function" && _typeof2(Symbol.iterator) === "symbol") {
module.exports = _typeof = function _typeof(obj) {
return _typeof2(obj);
};
} else {
module.exports = _typeof = function _typeof(obj) {
return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : _typeof2(obj);
};
}
return _typeof(obj);
}
module.exports = _typeof;
});
var isNode = (typeof process === "undefined" ? "undefined" : _typeof_1(process)) === 'object' && process.release && process.release.name === 'node'; // check if string is url
function isUrl(s) {
var regexp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-/]))?/;
return !s[0] === '#' || regexp.test(s);
}
/**
* Creates image data from HTML image
* @param {HTMLImageElement} image HTML Image element
*/
function createImageData(image) {
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
var width = image.naturalWidth;
var height = image.naturalHeight;
canvas.width = width;
canvas.height = height;
ctx.drawImage(image, 0, 0);
return ctx.getImageData(0, 0, image.naturalWidth, image.naturalHeight);
}
/**
* Reads image source and returns imageData as only callback parameter
* @param {*} source Image source
* @param {Function} callback Callback to pass the imageData
*/
function getImageDataFromSource(_x) {
return _getImageDataFromSource.apply(this, arguments);
}
function _getImageDataFromSource() {
_getImageDataFromSource = asyncToGenerator(
/*#__PURE__*/
regenerator.mark(function _callee(source) {
var isStringSource, isURLSource, tagName;
return regenerator.wrap(function _callee$(_context) {
while (1) {
switch (_context.prev = _context.next) {
case 0:
isStringSource = typeof source === 'string';
isURLSource = isStringSource ? isUrl(source) : false;
tagName = source.tagName;
return _context.abrupt("return", new Promise(function (resolve, reject) {
// String source
if (isStringSource) {
// Read file in Node.js
if (isNode) {
jimp.read(isURLSource ? {
url: source,
headers: {}
} : source, function (err, image) {
if (err) {
reject(err);
} else {
var _image$bitmap = image.bitmap,
data = _image$bitmap.data,
width = _image$bitmap.width,
height = _image$bitmap.height;
resolve({
data: data.toJSON().data,
width: width,
height: height
});
}
});
} else if (isURLSource) {
// Load Image from source
var img = new Image();
img.onerror = reject;
img.onload = function () {
return resolve(createImageData(img));
};
img.src = source;
} else {
// Find Elment by ID
var imgElem = document.getElementById(source);
if (imgElem) {
resolve(createImageData(imgElem));
}
reject(new Error('Invalid image source specified!'));
}
} else if (tagName) {
// HTML Image element
if (tagName === 'IMG') {
resolve(createImageData(source));
} // HTML Canvas element
else if (tagName === 'CANVAS') {
resolve(source.getContext('2d').getImageData(0, 0, source.naturalWidth, source.naturalHeight));
}
reject(new Error('Invalid image source specified!'));
} // Pixel Data
else if (source.data && source.width && source.height) {
resolve(source);
} else {
reject(new Error('Invalid image source specified!'));
}
}));
case 4:
case "end":
return _context.stop();
}
}
}, _callee);
}));
return _getImageDataFromSource.apply(this, arguments);
}
function getLines(obj) {
var data = obj.data,
start = obj.start,
end = obj.end,
channels = obj.channels,
width = obj.width;
var pxLine = data.slice(start, end);
var sum = [];
var bmp = [];
var lines = [];
var count = 1;
var min = 0;
var max = 0;
var padding = {
left: true,
right: true // grey scale section and sum of columns pixels in section
};
for (var row = 0; row < 2; row += 1) {
for (var col = 0; col < width; col += 1) {
var i = (row * width + col) * channels;
var g = (pxLine[i] * 3 + pxLine[i + 1] * 4 + pxLine[i + 2] * 2) / 9;
var s = sum[col];
pxLine[i] = g;
pxLine[i + 1] = g;
pxLine[i + 2] = g;
sum[col] = g + (s || 0);
}
}
for (var _i = 0; _i < width; _i += 1) {
sum[_i] /= 2;
var _s = sum[_i];
if (_s < min) {
min = _s;
} else {
max = _s;
}
} // matches columns in two rows
var pivot = min + (max - min) / 2;
for (var _col = 0; _col < width; _col += 1) {
var matches = 0;
var value = void 0;
for (var _row = 0; _row < 2; _row += 1) {
value = pxLine[(_row * width + _col) * channels];
if (value > pivot) {
matches += 1;
}
}
if (_col === 0 && value <= pivot) padding.left = false;
if (_col === width - 1 && value <= pivot) {
padding.right = false;
}
bmp.push(matches > 1);
} // matches width of barcode lines
var curr = bmp[0];
for (var _col2 = 0; _col2 < width; _col2 += 1) {
if (bmp[_col2] === curr) {
count += 1;
if (_col2 === width - 1) {
lines.push(count);
}
} else {
lines.push(count);
count = 1;
curr = bmp[_col2];
}
}
return {
lines: lines,
padding: padding
};
}
var utiltities = {
getImageDataFromSource: getImageDataFromSource,
getLines: getLines
};
var WIDTH_TBL = ['212222', '222122', '222221', '121223', '121322', '131222', '122213', '122312', '132212', '221213', '221312', '231212', '112232', '122132', '122231', '113222', '123122', '123221', '223211', '221132', '221231', '213212', '223112', '312131', '311222', '321122', '321221', '312212', '322112', '322211', '212123', '212321', '232121', '111323', '131123', '131321', '112313', '132113', '132311', '211313', '231113', '231311', '112133', '112331', '132131', '113123', '113321', '133121', '313121', '211331', '231131', '213113', '213311', '213131', '311123', '311321', '331121', '312113', '312311', '332111', '314111', '221411', '431111', '111224', '111422', '121124', '121421', '141122', '141221', '112214', '112412', '122114', '122411', '142112', '142211', '241211', '221114', '413111', '241112', '134111', '111242', '121142', '121241', '114212', '124112', '124211', '411212', '421112', '421211', '212141', '214121', '412121', '111143', '111341', '131141', '114113', '114311', '411113', '411311', '113141', '114131', '311141', '411131', '211412', '211214', '211232', '233111', '211133', '2331112'];
var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hift B', 'Code C', 'Code B', 'FNC 4', 'FNC 1'];
var TBL_B = [' ', '!', '"', '#', '$', '%', '&', "'", '(', ')', '*', '+', ',', '-', '.', '/', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=', '>', '?', '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', '_', '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', 'DEL', 'FNC 3', 'FNC 2', 'Shift A', 'Code C', 'FNC 4', 'Code A', 'FNC 1'];
var TBL_C = ['00', '01', '02', '03', '04', '05', '06', '07', '08', '09', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '30', '31', '32', '33', '34', '35', '36', '37', '38', '39', '40', '41', '42', '43', '44', '45', '46', '47', '48', '49', '50', '51', '52', '53', '54', '55', '56', '57', '58', '59', '60', '61', '62', '63', '64', '65', '66', '67', '68', '69', '70', '71', '72', '73', '74', '75', '76', '77', '78', '79', '80', '81', '82', '83', '84', '85', '86', '87', '88', '89', '90', '91', '92', '93', '94', '95', '96', '97', '98', '99', 'Code B', 'Code A', 'FNC 1'];
var computeGroup = function computeGroup(lines) {
// sum of a group in code-128 must be 11
var factor = lines.reduce(function (pre, item) {
return pre + item;
}, 0) / 11; //
return lines.map(function (item) {
return Math.round(item / factor);
}).join('');
};
var code128 = function code128(lines) {
var lookupTBL;
var sumOP;
var letterKey;
var letterCode;
var keyIndex;
var code = []; // extract terminal bar
lines.pop();
var seq = lines.slice(0);
letterKey = computeGroup(seq.splice(0, 6));
switch (letterKey) {
case '211214':
lookupTBL = TBL_B;
sumOP = 104;
break;
case '211232':
lookupTBL = TBL_C;
sumOP = 105;
break;
default:
lookupTBL = TBL_A;
sumOP = 103;
break;
}
for (var i = 1; seq.length > 12; i += 1) {
letterKey = computeGroup(seq.splice(0, 6));
keyIndex = WIDTH_TBL.indexOf(letterKey);
sumOP += i * keyIndex;
letterCode = lookupTBL[keyIndex];
switch (letterCode) {
case 'Code A':
lookupTBL = TBL_A;
break;
case 'Code B':
lookupTBL = TBL_B;
break;
case 'Code C':
lookupTBL = TBL_C;
break;
default:
code.push(letterCode);
break;
}
}
letterKey = computeGroup(seq.splice(0, 6));
if (sumOP % 103 !== WIDTH_TBL.indexOf(letterKey)) return null;
return code.join('');
};
var CHAR_SET = ['nnwwn', 'wnnnw', 'nwnnw', 'wwnnn', 'nnwnw', 'wnwnn', 'nwwnn', 'nnnww', 'wnnwn', 'nwnwn'];
var _2of5 = function _2of5(lines) {
var type = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'standard';
var code = [];
var barThreshold = Math.ceil(lines.reduce(function (pre, item) {
return (pre + item) / 2;
}, 0));
if (type === 'interleaved') {
// extract start/ends pair
var startChar = lines.splice(0, 4).map(function (line) {
return line > barThreshold ? 'w' : 'n';
}).join('');
var endChar = lines.splice(lines.length - 3, 3).map(function (line) {
return line > barThreshold ? 'w' : 'n';
}).join('');
if (startChar !== 'nnnn' || endChar !== 'wnn') return null; // Read one encoded character at a time.
while (lines.length > 0) {
var seg = lines.splice(0, 10);
var a = seg.filter(function (item, index) {
return index % 2 === 0;
}).map(function (line) {
return line > barThreshold ? 'w' : 'n';
}).join('');
code.push(CHAR_SET.indexOf(a));
var b = seg.filter(function (item, index) {
return index % 2 !== 0;
}).map(function (line) {
return line > barThreshold ? 'w' : 'n';
}).join('');
code.push(CHAR_SET.indexOf(b));
}
} else if (type === 'standard') {
// extract start/ends pair
var _startChar = lines.splice(0, 6).filter(function (item, index) {
return index % 2 === 0;
}).map(function (line) {
return line > barThreshold ? 'w' : 'n';
}).join('');
var _endChar = lines.splice(lines.length - 5, 5).filter(function (item, index) {
return index % 2 === 0;
}).map(function (line) {
return line > barThreshold ? 'w' : 'n';
}).join('');
if (_startChar !== 'wwn' || _endChar !== 'wnw') return null; // Read one encoded character at a time.
while (lines.length > 0) {
var _a = lines.splice(0, 10).filter(function (item, index) {
return index % 2 === 0;
}).map(function (line) {
return line > barThreshold ? 'w' : 'n';
}).join('');
code.push(CHAR_SET.indexOf(_a));
}
}
return code.join('');
};
var CHAR_SET$1 = {
nnnwwnwnn: '0',
wnnwnnnnw: '1',
nnwwnnnnw: '2',
wnwwnnnnn: '3',
nnnwwnnnw: '4',
wnnwwnnnn: '5',
nnwwwnnnn: '6',
nnnwnnwnw: '7',
wnnwnnwnn: '8',
nnwwnnwnn: '9',
wnnnnwnnw: 'A',
nnwnnwnnw: 'B',
wnwnnwnnn: 'C',
nnnnwwnnw: 'D',
wnnnwwnnn: 'E',
nnwnwwnnn: 'F',
nnnnnwwnw: 'G',
wnnnnwwnn: 'H',
nnwnnwwnn: 'I',
nnnnwwwnn: 'J',
wnnnnnnww: 'K',
nnwnnnnww: 'L',
wnwnnnnwn: 'M',
nnnnwnnww: 'N',
wnnnwnnwn: 'O',
nnwnwnnwn: 'P',
nnnnnnwww: 'Q',
wnnnnnwwn: 'R',
nnwnnnwwn: 'S',
nnnnwnwwn: 'T',
wwnnnnnnw: 'U',
nwwnnnnnw: 'V',
wwwnnnnnn: 'W',
nwnnwnnnw: 'X',
wwnnwnnnn: 'Y',
nwwnwnnnn: 'Z',
nwnnnnwnw: '-',
wwnnnnwnn: '.',
nwwnnnwnn: ' ',
nwnwnwnnn: '$',
nwnwnnnwn: '/',
nwnnnwnwn: '+',
nnnwnwnwn: '%',
nwnnwnwnn: '*'
};
var code39 = function code39(lines) {
var code = [];
var barThreshold = Math.ceil(lines.reduce(function (pre, item) {
return pre + item;
}, 0) / lines.length); // Read one encoded character at a time.
while (lines.length > 0) {
var sequenceBar = lines.splice(0, 10).map(function (line) {
return line > barThreshold ? 'w' : 'n';
});
code.push(CHAR_SET$1[sequenceBar.slice(0, 9).join('')]);
}
if (code.pop() !== '*' || code.shift() !== '*') return null;
return code.join('');
};
var CHAR_SET$2 = [{
'100010100': '0'
}, {
'101001000': '1'
}, {
'101000100': '2'
}, {
'101000010': '3'
}, {
'100101000': '4'
}, {
'100100100': '5'
}, {
'100100010': '6'
}, {
'101010000': '7'
}, {
'100010010': '8'
}, {
'100001010': '9'
}, {
'110101000': 'A'
}, {
'110100100': 'B'
}, {
'110100010': 'C'
}, {
'110010100': 'D'
}, {
'110010010': 'E'
}, {
'110001010': 'F'
}, {
'101101000': 'G'
}, {
'101100100': 'H'
}, {
'101100010': 'I'
}, {
'100110100': 'J'
}, {
'100011010': 'K'
}, {
'101011000': 'L'
}, {
'101001100': 'M'
}, {
'101000110': 'N'
}, {
'100101100': 'O'
}, {
'100010110': 'P'
}, {
'110110100': 'Q'
}, {
'110110010': 'R'
}, {
'110101100': 'S'
}, {
'110100110': 'T'
}, {
'110010110': 'U'
}, {
'110011010': 'V'
}, {
'101101100': 'W'
}, {
'101100110': 'X'
}, {
'100110110': 'Y'
}, {
'100111010': 'Z'
}, {
'100101110': '-'
}, {
'111010100': '.'
}, {
'111010010': ' '
}, {
'111001010': '$'
}, {
'101101110': '/'
}, {
'101110110': '+'
}, {
'110101110': '%'
}, {
'100100110': '($)'
}, {
'111011010': '(%)'
}, {
'111010110': '(/)'
}, {
'100110010': '(+)'
}, {
'101011110': '*'
}];
var code93 = function code93(lines) {
var code = [];
var binary = []; // remove termination bar
lines.pop();
var barThreshold = Math.ceil(lines.reduce(function (pre, item) {
return pre + item;
}, 0) / lines.length);
var minBarWidth = Math.ceil(lines.reduce(function (pre, item) {
if (item < barThreshold) return (pre + item) / 2;
return pre;
}, 0)); // leave the padded *
for (var i = 0; i < lines.length; i += 1) {
var segment = lines[i];
while (segment > 0) {
if (i % 2 === 0) {
binary.push(1);
} else {
binary.push(0);
}
segment -= minBarWidth;
}
}
var _loop = function _loop(_i) {
var searcKey = binary.slice(_i, _i + 9).join('');
var char = CHAR_SET$2.filter(function (item) {
return Object.keys(item)[0] === searcKey;
});
code.push(char[0][searcKey]);
};
for (var _i = 0; _i < binary.length; _i += 9) {
_loop(_i);
}
if (code.shift() !== '*' || code.pop() !== '*') return null;
var K = code.pop();
var sum = 0;
var letter;
var Value;
var findValue = function findValue(item) {
return Object.values(item)[0] === letter;
};
for (var _i2 = code.length - 1; _i2 >= 0; _i2 -= 1) {
letter = code[_i2];
Value = CHAR_SET$2.indexOf(CHAR_SET$2.filter(findValue)[0]);
sum += Value * (1 + (code.length - (_i2 + 1)) % 20);
}
if (Object.values(CHAR_SET$2[sum % 47])[0] !== K) return null;
var C = code.pop();
sum = 0;
for (var _i3 = code.length - 1; _i3 >= 0; _i3 -= 1) {
letter = code[_i3];
Value = CHAR_SET$2.indexOf(CHAR_SET$2.filter(findValue)[0]);
sum += Value * (1 + (code.length - (_i3 + 1)) % 20);
}
if (Object.values(CHAR_SET$2[sum % 47])[0] !== C) return null;
return code.join('');
};
var UPC_SET = {
'3211': '0',
'2221': '1',
'2122': '2',
'1411': '3',
'1132': '4',
'1231': '5',
'1114': '6',
'1312': '7',
'1213': '8',
'3112': '9'
};
var ean13 = function ean13(lines) {
var code = ''; // manually add start dummy line
lines.unshift(0); // start indicator/reference lines
var bar = ~~((lines[1] + lines[2] + lines[3]) / 3); //eslint-disable-line
for (var i = 1; i < lines.length; i += 1) {
var group = void 0;
if (code.length < 6) {
group = lines.slice(i * 4, i * 4 + 4);
} else {
group = lines.slice(i * 4 + 5, i * 4 + 9);
}
var digits = [Math.round(group[0] / bar), Math.round(group[1] / bar), Math.round(group[2] / bar), Math.round(group[3] / bar)];
var result = UPC_SET[digits.join('')] || UPC_SET[digits.reverse().join('')];
if (result) {
code += result;
}
if (code.length === 12) break;
}
return code;
};
var UPC_SET$1 = {
'3211': '0',
'2221': '1',
'2122': '2',
'1411': '3',
'1132': '4',
'1231': '5',
'1114': '6',
'1312': '7',
'1213': '8',
'3112': '9'
};
var ean8 = function ean8(lines) {
var code = ''; // manually add start dummy line
lines.unshift(0); // start indicator/reference lines
var bar = ~~((lines[1] + lines[2] + lines[3]) / 3); //eslint-disable-line
for (var i = 1; i < lines.length; i += 1) {
var group = void 0;
if (code.length < 4) {
group = lines.slice(i * 4, i * 4 + 4);
} else {
group = lines.slice(i * 4 + 5, i * 4 + 9);
}
var digits = [Math.round(group[0] / bar), Math.round(group[1] / bar), Math.round(group[2] / bar), Math.round(group[3] / bar)];
var result = UPC_SET$1[digits.join('')] || UPC_SET$1[digits.reverse().join('')];
if (result) {
code += result;
}
if (code.length === 8) break;
}
return code;
};
var CHAR_SET$3 = {
nnnnnww: '0',
nnnnwwn: '1',
nnnwnnw: '2',
wwnnnnn: '3',
nnwnnwn: '4',
wnnnnwn: '5',
nwnnnnw: '6',
nwnnwnn: '7',
nwwnnnn: '8',
wnnwnnn: '9',
nnnwwnn: '-',
nnwwnnn: '$',
wnnnwnw: ':',
wnwnnnw: '/',
wnwnwnn: '.',
nnwwwww: '+',
nnwwnwn: 'A',
nnnwnww: 'B',
nwnwnnw: 'C',
nnnwwwn: 'D'
};
var codabar = function codabar(lines) {
var code = [];
var barThreshold = Math.ceil(lines.reduce(function (pre, item) {
return (pre + item) / 2;
}, 0)); // Read one encoded character at a time.
while (lines.length > 0) {
var seg = lines.splice(0, 8).splice(0, 7);
var a = seg.map(function (line) {
return line < barThreshold ? 'n' : 'w';
}).join('');
code.push(CHAR_SET$3[a]);
}
return code.join('');
};
var src = createCommonjsModule(function (module) {
/* eslint-disable */
var BARCODE_DECODERS = {
'code-128': code128,
'code-2of5': _2of5,
'code-39': code39,
'code-93': code93,
'ean-13': ean13,
'ean-8': ean8,
codabar: codabar
/* eslint-enable */
/**
* Scans and returns barcode from the provided image
*
* @param {*} image Image element || Canvas || ImageData || Image Path in Node.js
* @param {Object} options Options defining type of barcode to detect
* @param {String} options.barcode Barcode name
* @param {String=} options.type Type of Barcode
* @returns {String} Extracted barcode string
*/
};
function barcodeDecoder(_x, _x2) {
return _barcodeDecoder.apply(this, arguments);
}
function _barcodeDecoder() {
_barcodeDecoder = asyncToGenerator(
/*#__PURE__*/
regenerator.mark(function _callee(image, options) {
var list, _ref, data, width, height, channels, spoints, numLines, slineStep, start, end, _UTILITIES$getLines, lines, padding, result;
return regenerator.wrap(function _callee$(_context) {
while (1) {
switch (_context.prev = _context.next) {
case 0:
// eslint-disable-next-line
options.barcode = options.barcode.toLowerCase();
list = Object.keys(BARCODE_DECODERS);
if (!(list.indexOf(options.barcode) === -1)) {
_context.next = 4;
break;
}
throw new Error("Invalid barcode specified. Available decoders: ".concat(list, ". https://github.com/mubaidr/Javascript-Barcode-Reader#available-decoders"));
case 4:
_context.next = 6;
return utiltities.getImageDataFromSource(image);
case 6:
_ref = _context.sent;
data = _ref.data;
width = _ref.width;
height = _ref.height;
channels = data.length / (width * height); // check points for barcode location
spoints = [1, 9, 2, 8, 3, 7, 4, 6, 5];
numLines = spoints.length;
slineStep = height / (numLines + 1); // eslint-disable-next-line
case 14:
if (!(numLines -= 1)) {
_context.next = 26;
break;
}
// create section of height 2
start = channels * width * Math.floor(slineStep * spoints[numLines]);
end = channels * width * Math.floor(slineStep * spoints[numLines]) + 2 * channels * width; // const pxLine = data.slice(start, end)
// const { lines, padding } = UTILITIES.getLines({
_UTILITIES$getLines = utiltities.getLines({
data: data,
start: start,
end: end,
width: width,
height: height,
channels: channels
}), lines = _UTILITIES$getLines.lines, padding = _UTILITIES$getLines.padding;
if (!(lines && lines.length !== 0)) {
_context.next = 24;
break;
}
// remove empty whitespaces on side of barcode
if (padding.left) lines.shift();
if (padding.right) lines.pop(); // Run the decoder
result = BARCODE_DECODERS[options.barcode](lines, options.type);
if (!result) {
_context.next = 24;
break;
}
return _context.abrupt("return", result);
case 24:
_context.next = 14;
break;
case 26:
throw new Error('Failed to extract barcode!');
case 27:
case "end":
return _context.stop();
}
}
}, _callee);
}));
return _barcodeDecoder.apply(this, arguments);
}
if (module && module.exports) {
module.exports = barcodeDecoder;
} else {
commonjsGlobal.javascriptBarcodeReader = barcodeDecoder;
}
});
return src;
}(window.jimp));
//# sourceMappingURL=javascript-barcode-reader.js.map

2

dist/javascript-barcode-reader.min.js

@@ -1,2 +0,2 @@

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//# sourceMappingURL=javascript-barcode-reader.min.js.map

8

package.json

@@ -7,2 +7,3 @@ {

"dependencies": {
"@babel/runtime": "^7.4.5",
"jimp": "^0.6.4"

@@ -13,6 +14,7 @@ },

"@babel/core": "^7.4.5",
"@babel/plugin-transform-runtime": "^7.4.4",
"@babel/preset-env": "7.4.5",
"eslint": "^6.0.0",
"eslint-config-airbnb": "^17.1.0",
"eslint-config-prettier": "^5.0.0",
"eslint-config-prettier": "^6.0.0",
"eslint-plugin-import": "^2.17.3",

@@ -24,2 +26,3 @@ "eslint-plugin-jsx-a11y": "^6.2.1",

"jest": "^24.8.0",
"npm-run-all": "^4.1.5",
"rollup": "^1.16.2",

@@ -57,7 +60,6 @@ "rollup-plugin-babel": "^4.3.3",

"test": "jest",
"test-gpu": "nodemon ./src/gpu-utilities.js",
"test:watch": "jest --watch",
"watch": "rollup -c -w"
},
"version": "0.4.14"
"version": "0.4.15"
}
dist/javascript-barcode-reader.js.map

Sorry, the diff of this file is not supported yet

dist/javascript-barcode-reader.min.js.map

Sorry, the diff of this file is not supported yet

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