csharp/client/result/GeoResultParser.cs

   1 /*\r
   2 * Copyright 2008 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 Result = com.google.zxing.Result;\r
  18 namespace com.google.zxing.client.result\r
  19 {\r
  20         \r
  21         /// <summary> Parses a "geo:" URI result, which specifies a location on the surface of\r
  22         /// the Earth as well as an optional altitude above the surface. See\r
  23         /// <a href="http://tools.ietf.org/html/draft-mayrhofer-geo-uri-00">\r
  24         /// http://tools.ietf.org/html/draft-mayrhofer-geo-uri-00</a>.\r
  25         /// \r
  26         /// </summary>\r
  27         /// <author>  Sean Owen\r
  28         /// </author>\r
  29         /// <author>www.Redivivus.in (suraj.supekar@redivivus.in) - Ported from ZXING Java Source \r
  30         /// </author>\r
  31         sealed class GeoResultParser:ResultParser\r
  32         {\r
  33                 \r
  34                 private GeoResultParser()\r
  35                 {\r
  36                 }\r
  37                 \r
  38                 public static GeoParsedResult parse(Result result)\r
  39                 {\r
  40                         System.String rawText = result.Text;\r
  41                         if (rawText == null || (!rawText.StartsWith("geo:") && !rawText.StartsWith("GEO:")))\r
  42                         {\r
  43                                 return null;\r
  44                         }\r
  45                         // Drop geo, query portion\r
  46                         //UPGRADE_WARNING: Method 'java.lang.String.indexOf' was converted to 'System.String.IndexOf' which may throw an exception. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1101'"\r
  47                         int queryStart = rawText.IndexOf('?', 4);\r
  48                         System.String geoURIWithoutQuery = queryStart < 0?rawText.Substring(4):rawText.Substring(4, (queryStart) - (4));\r
  49                         int latitudeEnd = geoURIWithoutQuery.IndexOf(',');\r
  50                         if (latitudeEnd < 0)\r
  51                         {\r
  52                                 return null;\r
  53                         }\r
  54                         //UPGRADE_WARNING: Method 'java.lang.String.indexOf' was converted to 'System.String.IndexOf' which may throw an exception. "ms-help://MS.VSCC.v80/dv_commoner/local/redirect.htm?index='!DefaultContextWindowIndex'&keyword='jlca1101'"\r
  55                         int longitudeEnd = geoURIWithoutQuery.IndexOf(',', latitudeEnd + 1);\r
  56                         double latitude, longitude, altitude;\r
  57                         try\r
  58                         {\r
  59                                 latitude = System.Double.Parse(geoURIWithoutQuery.Substring(0, (latitudeEnd) - (0)));\r
  60                                 if (longitudeEnd < 0)\r
  61                                 {\r
  62                                         longitude = System.Double.Parse(geoURIWithoutQuery.Substring(latitudeEnd + 1));\r
  63                                         altitude = 0.0;\r
  64                                 }\r
  65                                 else\r
  66                                 {\r
  67                                         longitude = System.Double.Parse(geoURIWithoutQuery.Substring(latitudeEnd + 1, (longitudeEnd) - (latitudeEnd + 1)));\r
  68                                         altitude = System.Double.Parse(geoURIWithoutQuery.Substring(longitudeEnd + 1));\r
  69                                 }\r
  70                         }\r
  71                         catch (System.FormatException nfe)\r
  72                         {\r
  73                                 return null;\r
  74                         }\r
  75                         return new GeoParsedResult(rawText.StartsWith("GEO:")?"geo:" + rawText.Substring(4):rawText, latitude, longitude, altitude);\r
  76                 }\r
  77         }\r
  78 }