Barcode Generation

node_modules/jsbarcode/bin/barcodes/CODE128/auto.js

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+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+	value: true
+});
+
+var _constants = require('./constants');
+
+// Match Set functions
+var matchSetALength = function matchSetALength(string) {
+	return string.match(new RegExp('^' + _constants.A_CHARS + '*'))[0].length;
+};
+var matchSetBLength = function matchSetBLength(string) {
+	return string.match(new RegExp('^' + _constants.B_CHARS + '*'))[0].length;
+};
+var matchSetC = function matchSetC(string) {
+	return string.match(new RegExp('^' + _constants.C_CHARS + '*'))[0];
+};
+
+// CODE128A or CODE128B
+function autoSelectFromAB(string, isA) {
+	var ranges = isA ? _constants.A_CHARS : _constants.B_CHARS;
+	var untilC = string.match(new RegExp('^(' + ranges + '+?)(([0-9]{2}){2,})([^0-9]|$)'));
+
+	if (untilC) {
+		return untilC[1] + String.fromCharCode(204) + autoSelectFromC(string.substring(untilC[1].length));
+	}
+
+	var chars = string.match(new RegExp('^' + ranges + '+'))[0];
+
+	if (chars.length === string.length) {
+		return string;
+	}
+
+	return chars + String.fromCharCode(isA ? 205 : 206) + autoSelectFromAB(string.substring(chars.length), !isA);
+}
+
+// CODE128C
+function autoSelectFromC(string) {
+	var cMatch = matchSetC(string);
+	var length = cMatch.length;
+
+	if (length === string.length) {
+		return string;
+	}
+
+	string = string.substring(length);
+
+	// Select A/B depending on the longest match
+	var isA = matchSetALength(string) >= matchSetBLength(string);
+	return cMatch + String.fromCharCode(isA ? 206 : 205) + autoSelectFromAB(string, isA);
+}
+
+// Detect Code Set (A, B or C) and format the string
+
+exports.default = function (string) {
+	var newString = void 0;
+	var cLength = matchSetC(string).length;
+
+	// Select 128C if the string start with enough digits
+	if (cLength >= 2) {
+		newString = _constants.C_START_CHAR + autoSelectFromC(string);
+	} else {
+		// Select A/B depending on the longest match
+		var isA = matchSetALength(string) > matchSetBLength(string);
+		newString = (isA ? _constants.A_START_CHAR : _constants.B_START_CHAR) + autoSelectFromAB(string, isA);
+	}
+
+	return newString.replace(/[\xCD\xCE]([^])[\xCD\xCE]/, // Any sequence between 205 and 206 characters
+	function (match, char) {
+		return String.fromCharCode(203) + char;
+	});
+};