QR Code: allow empty content, if user requests it

README.md

@@ -155,6 +155,9 @@ and data.
 
 ### Recent Releases
 
+#### Okapi Barcode 0.4.6
+- QR Code: allow empty content, if user requests it
+
 #### Okapi Barcode 0.4.5
 - Code 128: allow user to restrict the code sets used to encode data
 - First [reproducible build](https://github.com/jvm-repo-rebuild/reproducible-central/)

src/main/java/uk/org/okapibarcode/backend/QrCode.java

@@ -927,7 +927,8 @@ private void qrBinary(int[] datastream, int version, int target_binlen, QrMode[]
 
         info("Encoding: ");
 
-        do {
+        while (position < inputMode.length) {
+
             data_block = inputMode[position];
             short_data_block_length = 0;
             do {
@@ -1095,7 +1096,7 @@ private void qrBinary(int[] datastream, int version, int target_binlen, QrMode[]
 
             position += short_data_block_length;
 
-        } while (position < inputMode.length);
+        }
 
         infoLine();
 

src/test/resources/uk/org/okapibarcode/backend/qrcode/empty.properties

@@ -0,0 +1,47 @@
+PROPERTIES
+
+emptyContentAllowed=true
+content=
+
+LOG
+
+ECI Mode: 3
+ECI Charset: ISO-8859-1
+Encoding:
+Codewords: 0 236 17 236 17 236 17 236 17
+Version: 1
+ECC Level: H
+Mask 000 Penalties: 103 229 749 749
+Mask 001 Penalties: 125 299 779 EXIT
+Mask 010 Penalties: 131 302 782 EXIT
+Mask 011 Penalties: 120 282 762 EXIT
+Mask 100 Penalties: 132 327 807 EXIT
+Mask 101 Penalties: 132 324 804 EXIT
+Mask 110 Penalties: 124 328 808 EXIT
+Mask 111 Penalties: 112 319 839 EXIT
+Mask Pattern: 000
+Blocks Merged: 113 -> 80
+
+CODEWORDS
+
+7112127
+15122111151
+1131133111311
+113111121211311
+11311711311
+151322151
+711111117
+091128
+0211312223121
+0234222312
+212191131
+16223412
+3251112111111
+0812511111
+73141131
+15111312312
+11311111132131
+113113121421
+1131111322131
+1512114321
+725211111