添加项目文件。

zxing.core/xx/oned/rss/expanded/BitArrayBuilder.cs

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+/*
+ * Copyright (C) 2010 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.
+ */
+
+/*
+ * These authors would like to acknowledge the Spanish Ministry of Industry,
+ * Tourism and Trade, for the support in the project TSI020301-2008-2
+ * "PIRAmIDE: Personalizable Interactions with Resources on AmI-enabled
+ * Mobile Dynamic Environments", led by Treelogic
+ * ( http://www.treelogic.com/ ):
+ *
+ *   http://www.piramidepse.com/
+ */
+
+using System.Collections.Generic;
+using ZXing.Common;
+
+namespace ZXing.OneD.RSS.Expanded
+{
+   /// <summary>
+   /// <author>Pablo Orduña, University of Deusto (pablo.orduna@deusto.es)</author>
+   /// <author>Eduardo Castillejo, University of Deusto (eduardo.castillejo@deusto.es)</author>
+   /// </summary>
+   static class BitArrayBuilder
+   {
+      internal static BitArray buildBitArray(List<ExpandedPair> pairs)
+      {
+         int charNumber = (pairs.Count << 1) - 1;
+         if (pairs[pairs.Count - 1].RightChar == null)
+         {
+            charNumber -= 1;
+         }
+
+         int size = 12 * charNumber;
+
+         BitArray binary = new BitArray(size);
+         int accPos = 0;
+
+         ExpandedPair firstPair = pairs[0];
+         int firstValue = firstPair.RightChar.Value;
+         for (int i = 11; i >= 0; --i)
+         {
+            if ((firstValue & (1 << i)) != 0)
+            {
+               binary[accPos] = true;
+            }
+            accPos++;
+         }
+
+         for (int i = 1; i < pairs.Count; ++i)
+         {
+            ExpandedPair currentPair = pairs[i];
+
+            int leftValue = currentPair.LeftChar.Value;
+            for (int j = 11; j >= 0; --j)
+            {
+               if ((leftValue & (1 << j)) != 0)
+               {
+                  binary[accPos] = true;
+               }
+               accPos++;
+            }
+
+            if (currentPair.RightChar != null)
+            {
+               int rightValue = currentPair.RightChar.Value;
+               for (int j = 11; j >= 0; --j)
+               {
+                  if ((rightValue & (1 << j)) != 0)
+                  {
+                     binary[accPos] = true;
+                  }
+                  accPos++;
+               }
+            }
+         }
+         return binary;
+      }
+   }
+}