X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=core%2Fsrc%2Fcom%2Fgoogle%2Fzxing%2Foned%2FUPCEReader.java;h=f8b885aa633a3f2a8ccab12a3bff95dad8aa8b17;hb=1170ad08b19f495ae38daf72a816ac60e5606aae;hp=165f9ad7ae0d0b91f43bfb93f33aec37a3626253;hpb=adcb498790b50fa7fa9a76b7c823d9bdb64ff322;p=zxing.git

diff --git a/core/src/com/google/zxing/oned/UPCEReader.java b/core/src/com/google/zxing/oned/UPCEReader.java
index 165f9ad7..f8b885aa 100644
--- a/core/src/com/google/zxing/oned/UPCEReader.java
+++ b/core/src/com/google/zxing/oned/UPCEReader.java
@@ -26,7 +26,7 @@ import com.google.zxing.common.BitArray;
  * <p><a href="http://www.barcodeisland.com/upce.phtml">This</a> is a great reference for
  * UPC-E information.</p>
  *
- * @author srowen@google.com (Sean Owen)
+ * @author Sean Owen
  */
 public final class UPCEReader extends AbstractUPCEANReader {
 
@@ -46,9 +46,18 @@ public final class UPCEReader extends AbstractUPCEANReader {
       {0x07, 0x0B, 0x0D, 0x0E, 0x13, 0x19, 0x1C, 0x15, 0x16, 0x1A}
   };
 
-  protected int decodeMiddle(BitArray row, int[] startRange, StringBuffer result) throws ReaderException {
+  private final int[] decodeMiddleCounters;
+
+  public UPCEReader() {
+    decodeMiddleCounters = new int[4];
+  }
 
-    int[] counters = new int[4];
+  protected int decodeMiddle(BitArray row, int[] startRange, StringBuffer result) throws ReaderException {
+    int[] counters = decodeMiddleCounters;
+    counters[0] = 0;
+    counters[1] = 0;
+    counters[2] = 0;
+    counters[3] = 0;
     int end = row.getSize();
     int rowOffset = startRange[1];
 
@@ -90,7 +99,7 @@ public final class UPCEReader extends AbstractUPCEANReader {
         }
       }
     }
-    throw new ReaderException("Unable to determine number system and check digit");
+    throw ReaderException.getInstance();
   }
 
   BarcodeFormat getBarcodeFormat() {
@@ -103,7 +112,7 @@ public final class UPCEReader extends AbstractUPCEANReader {
    * @param upce UPC-E code as string of digits
    * @return equivalent UPC-A code as string of digits
    */
-  private static String convertUPCEtoUPCA(String upce) {
+  public static String convertUPCEtoUPCA(String upce) {
     char[] upceChars = new char[6];
     upce.getChars(1, 7, upceChars, 0);
     StringBuffer result = new StringBuffer(12);