X-Git-Url: http://git.rot13.org/?p=zxing.git;a=blobdiff_plain;f=core%2Fsrc%2Fcom%2Fgoogle%2Fzxing%2Foned%2FCode39Reader.java;h=0bc66bf518cef8d3f2ca0c0756c91e57dc1950e6;hp=50c0ede58e5b1612db6017e82379a5d0617b8f61;hb=2d9efc5f0d19d70fb4f240f506bc23992ab3fde6;hpb=7a9d557c6d1dc1db0e9d256161f0a0eec1558632

diff --git a/core/src/com/google/zxing/oned/Code39Reader.java b/core/src/com/google/zxing/oned/Code39Reader.java
index 50c0ede5..0bc66bf5 100644
--- a/core/src/com/google/zxing/oned/Code39Reader.java
+++ b/core/src/com/google/zxing/oned/Code39Reader.java
@@ -30,6 +30,7 @@ import java.util.Hashtable;
  * <p>Decodes Code 39 barcodes. This does not support "Full ASCII Code 39" yet.</p>
  *
  * @author Sean Owen
+ * @see Code93Reader
  */
 public final class Code39Reader extends OneDReader {
 
@@ -143,22 +144,24 @@ public final class Code39Reader extends OneDReader {
       for (int i = 0; i < max; i++) {
         total += ALPHABET_STRING.indexOf(result.charAt(i));
       }
-      if (total % 43 != ALPHABET_STRING.indexOf(result.charAt(max))) {
+      if (result.charAt(max) != ALPHABET[total % 43]) {
         throw ChecksumException.getChecksumInstance();
       }
       result.deleteCharAt(max);
     }
 
-    String resultString = result.toString();
-    if (extendedMode) {
-      resultString = decodeExtended(resultString);
-    }
-
-    if (resultString.length() == 0) {
+    if (result.length() == 0) {
       // Almost surely a false positive
       throw NotFoundException.getNotFoundInstance();
     }
 
+    String resultString;
+    if (extendedMode) {
+      resultString = decodeExtended(result);
+    } else {
+      resultString = result.toString();
+    }
+
     float left = (float) (start[1] + start[0]) / 2.0f;
     float right = (float) (nextStart + lastStart) / 2.0f;
     return new Result(
@@ -271,7 +274,7 @@ public final class Code39Reader extends OneDReader {
     throw NotFoundException.getNotFoundInstance();
   }
 
-  private static String decodeExtended(String encoded) throws FormatException {
+  private static String decodeExtended(StringBuffer encoded) throws FormatException {
     int length = encoded.length();
     StringBuffer decoded = new StringBuffer(length);
     for (int i = 0; i < length; i++) {