moved java files for pre-convert

src/oned/UPCAReader.java

@@ -0,0 +1,90 @@
+/*
+ * Copyright 2008 ZXing authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.zxing.oned;
+
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.BinaryBitmap;
+import com.google.zxing.ChecksumException;
+import com.google.zxing.DecodeHintType;
+import com.google.zxing.FormatException;
+import com.google.zxing.NotFoundException;
+import com.google.zxing.Result;
+import com.google.zxing.common.BitArray;
+
+import java.util.Map;
+
+/**
+ * <p>Implements decoding of the UPC-A format.</p>
+ *
+ * @author dswitkin@google.com (Daniel Switkin)
+ * @author Sean Owen
+ */
+public final class UPCAReader extends UPCEANReader {
+
+  private final UPCEANReader ean13Reader = new EAN13Reader();
+
+  @Override
+  public Result decodeRow(int rowNumber,
+                          BitArray row,
+                          int[] startGuardRange,
+                          Map<DecodeHintType,?> hints)
+      throws NotFoundException, FormatException, ChecksumException {
+    return maybeReturnResult(ean13Reader.decodeRow(rowNumber, row, startGuardRange, hints));
+  }
+
+  @Override
+  public Result decodeRow(int rowNumber, BitArray row, Map<DecodeHintType,?> hints)
+      throws NotFoundException, FormatException, ChecksumException {
+    return maybeReturnResult(ean13Reader.decodeRow(rowNumber, row, hints));
+  }
+
+  @Override
+  public Result decode(BinaryBitmap image) throws NotFoundException, FormatException {
+    return maybeReturnResult(ean13Reader.decode(image));
+  }
+
+  @Override
+  public Result decode(BinaryBitmap image, Map<DecodeHintType,?> hints)
+      throws NotFoundException, FormatException {
+    return maybeReturnResult(ean13Reader.decode(image, hints));
+  }
+
+  @Override
+  BarcodeFormat getBarcodeFormat() {
+    return BarcodeFormat.UPC_A;
+  }
+
+  @Override
+  protected int decodeMiddle(BitArray row, int[] startRange, StringBuilder resultString)
+      throws NotFoundException {
+    return ean13Reader.decodeMiddle(row, startRange, resultString);
+  }
+
+  private static Result maybeReturnResult(Result result) throws FormatException {
+    String text = result.getText();
+    if (text.charAt(0) == '0') {
+      Result upcaResult = new Result(text.substring(1), null, result.getResultPoints(), BarcodeFormat.UPC_A);
+      if (result.getResultMetadata() != null) {
+        upcaResult.putAllMetadata(result.getResultMetadata());
+      }
+      return upcaResult;
+    } else {
+      throw FormatException.getFormatInstance();
+    }
+  }
+
+}