moved java files for pre-convert

src/oned/MultiFormatOneDReader.java

@@ -0,0 +1,114 @@
+/*
+ * 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.DecodeHintType;
+import com.google.zxing.NotFoundException;
+import com.google.zxing.Reader;
+import com.google.zxing.ReaderException;
+import com.google.zxing.Result;
+import com.google.zxing.common.BitArray;
+import com.google.zxing.oned.rss.RSS14Reader;
+import com.google.zxing.oned.rss.expanded.RSSExpandedReader;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Map;
+
+/**
+ * @author dswitkin@google.com (Daniel Switkin)
+ * @author Sean Owen
+ */
+public final class MultiFormatOneDReader extends OneDReader {
+
+  private static final OneDReader[] EMPTY_ONED_ARRAY = new OneDReader[0];
+
+  private final OneDReader[] readers;
+
+  public MultiFormatOneDReader(Map<DecodeHintType,?> hints) {
+    @SuppressWarnings("unchecked")
+    Collection<BarcodeFormat> possibleFormats = hints == null ? null :
+        (Collection<BarcodeFormat>) hints.get(DecodeHintType.POSSIBLE_FORMATS);
+    boolean useCode39CheckDigit = hints != null &&
+        hints.get(DecodeHintType.ASSUME_CODE_39_CHECK_DIGIT) != null;
+    Collection<OneDReader> readers = new ArrayList<>();
+    if (possibleFormats != null) {
+      if (possibleFormats.contains(BarcodeFormat.EAN_13) ||
+          possibleFormats.contains(BarcodeFormat.UPC_A) ||
+          possibleFormats.contains(BarcodeFormat.EAN_8) ||
+          possibleFormats.contains(BarcodeFormat.UPC_E)) {
+        readers.add(new MultiFormatUPCEANReader(hints));
+      }
+      if (possibleFormats.contains(BarcodeFormat.CODE_39)) {
+        readers.add(new Code39Reader(useCode39CheckDigit));
+      }
+      if (possibleFormats.contains(BarcodeFormat.CODE_93)) {
+        readers.add(new Code93Reader());
+      }
+      if (possibleFormats.contains(BarcodeFormat.CODE_128)) {
+        readers.add(new Code128Reader());
+      }
+      if (possibleFormats.contains(BarcodeFormat.ITF)) {
+        readers.add(new ITFReader());
+      }
+      if (possibleFormats.contains(BarcodeFormat.CODABAR)) {
+        readers.add(new CodaBarReader());
+      }
+      if (possibleFormats.contains(BarcodeFormat.RSS_14)) {
+        readers.add(new RSS14Reader());
+      }
+      if (possibleFormats.contains(BarcodeFormat.RSS_EXPANDED)) {
+        readers.add(new RSSExpandedReader());
+      }
+    }
+    if (readers.isEmpty()) {
+      readers.add(new MultiFormatUPCEANReader(hints));
+      readers.add(new Code39Reader());
+      readers.add(new CodaBarReader());
+      readers.add(new Code93Reader());
+      readers.add(new Code128Reader());
+      readers.add(new ITFReader());
+      readers.add(new RSS14Reader());
+      readers.add(new RSSExpandedReader());
+    }
+    this.readers = readers.toArray(EMPTY_ONED_ARRAY);
+  }
+
+  @Override
+  public Result decodeRow(int rowNumber,
+                          BitArray row,
+                          Map<DecodeHintType,?> hints) throws NotFoundException {
+    for (OneDReader reader : readers) {
+      try {
+        return reader.decodeRow(rowNumber, row, hints);
+      } catch (ReaderException re) {
+        // continue
+      }
+    }
+
+    throw NotFoundException.getNotFoundInstance();
+  }
+
+  @Override
+  public void reset() {
+    for (Reader reader : readers) {
+      reader.reset();
+    }
+  }
+
+}