添加项目文件。

zxing.core/xx/qrcode/decoder/Mode.cs

@@ -0,0 +1,179 @@
+/*
+* Copyright 2007 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.
+*/
+
+using System;
+
+namespace ZXing.QrCode.Internal
+{
+   /// <summary>
+   /// <p>See ISO 18004:2006, 6.4.1, Tables 2 and 3. This enum encapsulates the various modes in which
+   /// data can be encoded to bits in the QR code standard.</p>
+   /// </summary>
+   /// <author>Sean Owen</author>
+   public sealed class Mode
+   {
+      /// <summary>
+      /// Gets the name.
+      /// </summary>
+      public String Name
+      {
+         get
+         {
+            return name;
+         }
+      }
+
+      // No, we can't use an enum here. J2ME doesn't support it.
+
+      /// <summary>
+      /// 
+      /// </summary>
+      public static readonly Mode TERMINATOR = new Mode(new int[] { 0, 0, 0 }, 0x00, "TERMINATOR"); // Not really a mode...
+      /// <summary>
+      /// 
+      /// </summary>
+      public static readonly Mode NUMERIC = new Mode(new int[] { 10, 12, 14 }, 0x01, "NUMERIC");
+      /// <summary>
+      /// 
+      /// </summary>
+      public static readonly Mode ALPHANUMERIC = new Mode(new int[] { 9, 11, 13 }, 0x02, "ALPHANUMERIC");
+      /// <summary>
+      /// 
+      /// </summary>
+      public static readonly Mode STRUCTURED_APPEND = new Mode(new int[] { 0, 0, 0 }, 0x03, "STRUCTURED_APPEND"); // Not supported
+      /// <summary>
+      /// 
+      /// </summary>
+      public static readonly Mode BYTE = new Mode(new int[] { 8, 16, 16 }, 0x04, "BYTE");
+      /// <summary>
+      /// 
+      /// </summary>
+      public static readonly Mode ECI = new Mode(null, 0x07, "ECI"); // character counts don't apply
+      /// <summary>
+      /// 
+      /// </summary>
+      public static readonly Mode KANJI = new Mode(new int[] { 8, 10, 12 }, 0x08, "KANJI");
+      /// <summary>
+      /// 
+      /// </summary>
+      public static readonly Mode FNC1_FIRST_POSITION = new Mode(null, 0x05, "FNC1_FIRST_POSITION");
+      /// <summary>
+      /// 
+      /// </summary>
+      public static readonly Mode FNC1_SECOND_POSITION = new Mode(null, 0x09, "FNC1_SECOND_POSITION");
+      /// <summary>See GBT 18284-2000; "Hanzi" is a transliteration of this mode name.</summary>
+      public static readonly Mode HANZI = new Mode(new int[] { 8, 10, 12 }, 0x0D, "HANZI");
+
+      private readonly int[] characterCountBitsForVersions;
+      private readonly int bits;
+      private readonly String name;
+
+      private Mode(int[] characterCountBitsForVersions, int bits, System.String name)
+      {
+         this.characterCountBitsForVersions = characterCountBitsForVersions;
+         this.bits = bits;
+         this.name = name;
+      }
+
+      /// <summary>
+      /// Fors the bits.
+      /// </summary>
+      /// <param name="bits">four bits encoding a QR Code data mode</param>
+      /// <returns>
+      ///   <see cref="Mode"/> encoded by these bits
+      /// </returns>
+      /// <exception cref="ArgumentException">if bits do not correspond to a known mode</exception>
+      public static Mode forBits(int bits)
+      {
+         switch (bits)
+         {
+            case 0x0:
+               return TERMINATOR;
+            case 0x1:
+               return NUMERIC;
+            case 0x2:
+               return ALPHANUMERIC;
+            case 0x3:
+               return STRUCTURED_APPEND;
+            case 0x4:
+               return BYTE;
+            case 0x5:
+               return FNC1_FIRST_POSITION;
+            case 0x7:
+               return ECI;
+            case 0x8:
+               return KANJI;
+            case 0x9:
+               return FNC1_SECOND_POSITION;
+            case 0xD:
+               // 0xD is defined in GBT 18284-2000, may not be supported in foreign country
+               return HANZI;
+            default:
+               throw new ArgumentException();
+         }
+      }
+
+      /// <param name="version">version in question
+      /// </param>
+      /// <returns> number of bits used, in this QR Code symbol {@link Version}, to encode the
+      /// count of characters that will follow encoded in this {@link Mode}
+      /// </returns>
+      public int getCharacterCountBits(Version version)
+      {
+         if (characterCountBitsForVersions == null)
+         {
+            throw new ArgumentException("Character count doesn't apply to this mode");
+         }
+         int number = version.VersionNumber;
+         int offset;
+         if (number <= 9)
+         {
+            offset = 0;
+         }
+         else if (number <= 26)
+         {
+            offset = 1;
+         }
+         else
+         {
+            offset = 2;
+         }
+         return characterCountBitsForVersions[offset];
+      }
+
+      /// <summary>
+      /// Gets the bits.
+      /// </summary>
+      public int Bits
+      {
+         get
+         {
+            return bits;
+         }
+      }
+
+      /// <summary>
+      /// Returns a <see cref="System.String"/> that represents this instance.
+      /// </summary>
+      /// <returns>
+      /// A <see cref="System.String"/> that represents this instance.
+      /// </returns>
+      public override String ToString()
+      {
+         return name;
+      }
+   }
+}