From 4f598d54783970d39eee6364a49e9739a50f3ca5 Mon Sep 17 00:00:00 2001
From: Johan Lindell <johan@lindell.me>
Date: Tue, 29 Mar 2016 18:05:41 +0200
Subject: [PATCH] Added support for EAN-5

---
 barcodes/EAN_UPC.js         | 78 +++++++++++++++++++++++++++++++------
 test/browser/tests.js       |  2 +
 test/node/JsBarcode.test.js | 21 ++++++++++
 3 files changed, 90 insertions(+), 11 deletions(-)

diff --git a/barcodes/EAN_UPC.js b/barcodes/EAN_UPC.js
index cb1d076f..b6c3d1a3 100644
--- a/barcodes/EAN_UPC.js
+++ b/barcodes/EAN_UPC.js
@@ -106,22 +106,14 @@ function EAN8(EAN8number){
 	}
 
 	this.valid = function(){
-		return valid(this.EAN8number);
+		return this.EAN8number.search(fullEanRegexp) !== -1
+			&& this.EAN8number[7] == checksum(this.EAN8number);
 	};
 
 	this.encoded = function (){
 		return createEAN8(this.EAN8number);
 	}
 
-	function valid(number){
-		if(number.search(fullEanRegexp)!=-1){
-			return number[7] == checksum(number);
-		}
-		else{
-			return false;
-		}
-	}
-
 	//Calulate the checksum digit
 	function checksum(number){
 		var result = 0;
@@ -163,6 +155,62 @@ function EAN8(EAN8number){
 	}
 }
 
+function EAN5(EAN5number){
+	this.EAN5number = EAN5number+"";
+
+	//Regexp to test if the EAN code is correct formated
+	var fullEanRegexp = /^[0-9]{5}$/;
+
+	this.getText = function(){
+		return this.EAN5number;
+	}
+
+	this.valid = function(){
+		return this.EAN5number.search(fullEanRegexp)!==-1;
+	};
+
+	this.encoded = function (){
+		return createEAN5(this.EAN5number);
+	}
+
+	//Calulate the checksum digit
+	function checksum(number){
+		var result = 0;
+
+		for(var i=0;i<5;i+=2){result+=parseInt(number[i])*3}
+		for(var i=1;i<5;i+=2){result+=parseInt(number[i])*9}
+
+		return result % 10;
+	}
+
+	var EAN5structure = [
+		"GGLLL",
+		"GLGLL",
+		"GLLGL",
+		"GLLLG",
+		"LGGLL",
+		"LLGGL",
+		"LLLGG",
+		"LGLGL",
+		"LGLLG",
+		"LLGLG"
+	];
+
+	function createEAN5(number){
+		var encoder = new EANencoder();
+
+		//Create the return variable
+		var result = "";
+
+		//Add the start bits
+		result += encoder.startBin;
+
+		// Add the encodings
+		result += encoder.encode(number, EAN5structure[checksum(number)], "01");
+
+		return result;
+	}
+}
 
 function UPC(UPCnumber){
 	this.ean = new EAN("0"+UPCnumber);
@@ -234,10 +282,12 @@ function EANencoder(){
 	];
 
 	//Convert a numberarray to the representing
-	this.encode = function(number,structure){
+	this.encode = function(number, structure, separator){
 		//Create the variable that should be returned at the end of the function
 		var result = "";
 
+		var separator = typeof separator === "undefined" ? "" : separator;
+
 		//Loop all the numbers
 		for(var i = 0;i<number.length;i++){
 			//Using the L, G or R encoding and add it to the returning variable
@@ -250,6 +300,11 @@ function EANencoder(){
 			else if(structure[i]=="R"){
 				result += Rbinary[number[i]];
 			}
+
+			// Add separator
+			if(i < number.length - 1){
+				result += separator;
+			}
 		}
 		return result;
 	};
@@ -260,6 +315,7 @@ function EANencoder(){
 var register = function(core){
 	core.register(EAN, /^EAN(.?13)?$/i, 8);
 	core.register(EAN8, /^EAN.?8$/i, 8);
+	core.register(EAN5, /^EAN.?5$/i, 5);
 	core.register(UPC, /^UPC(.?A)?$/i, 8);
 }
 try{register(JsBarcode)} catch(e){}
diff --git a/test/browser/tests.js b/test/browser/tests.js
index 31c80ff2..e361aa7b 100644
--- a/test/browser/tests.js
+++ b/test/browser/tests.js
@@ -1,8 +1,10 @@
 function createTests(parent){
   newTest(parent, "This has a \nnewline", {width: 1});
+  newTest(parent, "\tHi\nHI", {width: 1});
   newTest(parent, "A little test!", {format: "CODE128", width: 1});
   newTest(parent, "A LITTLE TEST", {format: "CODE39", width: 1});
   newTest(parent, "A little test", {format: "CODE39", width: 1});
+  newTest(parent, "12345", {format: "EAN5", width: 1});
   newTest(parent, "123456789999", {format: "UPC", width: 1});
   newTest(parent, "5901234123457", {format: "EAN", width: 1});
   newTest(parent, "590123412345", {format: "EAN", width: 1});
diff --git a/test/node/JsBarcode.test.js b/test/node/JsBarcode.test.js
index 93219c9c..13373279 100644
--- a/test/node/JsBarcode.test.js
+++ b/test/node/JsBarcode.test.js
@@ -12,6 +12,7 @@ describe('Encoders', function() {
     EAN = JsBarcode.getModule("EAN");
     UPC = JsBarcode.getModule("UPC");
     EAN8 = JsBarcode.getModule("EAN8");
+    EAN5 = JsBarcode.getModule("EAN5");
     ITF14 = JsBarcode.getModule("ITF14");
     ITF = JsBarcode.getModule("ITF");
     MSI = JsBarcode.getModule("MSI");
@@ -296,6 +297,26 @@ describe('EAN-8', function() {
   });
 });
 
+describe('EAN-5', function() {
+  it('should be able to encode normal text', function () {
+    var enc = new EAN5("54495");
+    assert.equal(true, enc.valid());
+    assert.equal(enc.encoded(), "1010110001010100011010011101010001011010111001");
+
+    var enc = new EAN5("12345");
+    assert.equal(true, enc.valid());
+    assert.equal(enc.encoded(), "1010110011010010011010100001010100011010110001");
+  });
+
+  it('should warn with invalid text', function () {
+    var enc = new EAN5("1234");
+    assert.equal(false, enc.valid());
+
+    var enc = new EAN5("123a5");
+    assert.equal(false, enc.valid());
+  });
+});
+
 describe('ITF-14', function() {
   it('should be able to encode normal text', function () {
     var enc = new ITF14("98765432109213");