csharp/client/result/ProductResultParser.cs

   1 /*\r
   2 * Copyright 2007 ZXing authors\r
   3 *\r
   4 * Licensed under the Apache License, Version 2.0 (the "License");\r
   5 * you may not use this file except in compliance with the License.\r
   6 * You may obtain a copy of the License at\r
   7 *\r
   8 *      http://www.apache.org/licenses/LICENSE-2.0\r
   9 *\r
  10 * Unless required by applicable law or agreed to in writing, software\r
  11 * distributed under the License is distributed on an "AS IS" BASIS,\r
  12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
  13 * See the License for the specific language governing permissions and\r
  14 * limitations under the License.\r
  15 */\r
  16 using System;\r
  17 using BarcodeFormat = com.google.zxing.BarcodeFormat;\r
  18 using Result = com.google.zxing.Result;\r
  19 using UPCEReader = com.google.zxing.oned.UPCEReader;\r
  20 namespace com.google.zxing.client.result\r
  21 {\r
  22         \r
  23         /// <summary> Parses strings of digits that represent a UPC code.\r
  24         /// \r
  25         /// </summary>\r
  26         /// <author>  dswitkin@google.com (Daniel Switkin)\r
  27         /// </author>\r
  28         /// <author>www.Redivivus.in (suraj.supekar@redivivus.in) - Ported from ZXING Java Source \r
  29         /// </author>\r
  30         sealed class ProductResultParser:ResultParser\r
  31         {\r
  32                 \r
  33                 private ProductResultParser()\r
  34                 {\r
  35                 }\r
  36                 \r
  37                 // Treat all UPC and EAN variants as UPCs, in the sense that they are all product barcodes.\r
  38                 public static ProductParsedResult parse(Result result)\r
  39                 {\r
  40                         BarcodeFormat format = result.BarcodeFormat;\r
  41                         if (!(BarcodeFormat.UPC_A.Equals(format) || BarcodeFormat.UPC_E.Equals(format) || BarcodeFormat.EAN_8.Equals(format) || BarcodeFormat.EAN_13.Equals(format)))\r
  42                         {\r
  43                                 return null;\r
  44                         }\r
  45                         // Really neither of these should happen:\r
  46                         System.String rawText = result.Text;\r
  47                         if (rawText == null)\r
  48                         {\r
  49                                 return null;\r
  50                         }\r
  51                         \r
  52                         int length = rawText.Length;\r
  53                         for (int x = 0; x < length; x++)\r
  54                         {\r
  55                                 char c = rawText[x];\r
  56                                 if (c < '0' || c > '9')\r
  57                                 {\r
  58                                         return null;\r
  59                                 }\r
  60                         }\r
  61                         // Not actually checking the checksum again here    \r
  62                         \r
  63                         System.String normalizedProductID;\r
  64                         // Expand UPC-E for purposes of searching\r
  65                         if (BarcodeFormat.UPC_E.Equals(format))\r
  66                         {\r
  67                                 normalizedProductID = UPCEReader.convertUPCEtoUPCA(rawText);\r
  68                         }\r
  69                         else\r
  70                         {\r
  71                                 normalizedProductID = rawText;\r
  72                         }\r
  73                         \r
  74                         return new ProductParsedResult(rawText, normalizedProductID);\r
  75                 }\r
  76         }\r
  77 }