添加项目文件。

zxing.core/xx/datamatrix/encoder/ASCIIEncoder.cs

@@ -0,0 +1,95 @@
+/*
+ * Copyright 2006-2007 Jeremias Maerki.
+ *
+ * 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.Datamatrix.Encoder
+{
+   internal sealed class ASCIIEncoder : Encoder
+   {
+      public int EncodingMode
+      {
+         get { return Encodation.ASCII; }
+      }
+
+      public void encode(EncoderContext context)
+      {
+         //step B
+         int n = HighLevelEncoder.determineConsecutiveDigitCount(context.Message, context.Pos);
+         if (n >= 2)
+         {
+            context.writeCodeword(encodeASCIIDigits(context.Message[context.Pos],
+                                                    context.Message[context.Pos + 1]));
+            context.Pos += 2;
+         }
+         else
+         {
+            char c = context.CurrentChar;
+            int newMode = HighLevelEncoder.lookAheadTest(context.Message, context.Pos, EncodingMode);
+            if (newMode != EncodingMode)
+            {
+               switch (newMode)
+               {
+                  case Encodation.BASE256:
+                     context.writeCodeword(HighLevelEncoder.LATCH_TO_BASE256);
+                     context.signalEncoderChange(Encodation.BASE256);
+                     return;
+                  case Encodation.C40:
+                     context.writeCodeword(HighLevelEncoder.LATCH_TO_C40);
+                     context.signalEncoderChange(Encodation.C40);
+                     return;
+                  case Encodation.X12:
+                     context.writeCodeword(HighLevelEncoder.LATCH_TO_ANSIX12);
+                     context.signalEncoderChange(Encodation.X12);
+                     break;
+                  case Encodation.TEXT:
+                     context.writeCodeword(HighLevelEncoder.LATCH_TO_TEXT);
+                     context.signalEncoderChange(Encodation.TEXT);
+                     break;
+                  case Encodation.EDIFACT:
+                     context.writeCodeword(HighLevelEncoder.LATCH_TO_EDIFACT);
+                     context.signalEncoderChange(Encodation.EDIFACT);
+                     break;
+                  default:
+                     throw new InvalidOperationException("Illegal mode: " + newMode);
+               }
+            }
+            else if (HighLevelEncoder.isExtendedASCII(c))
+            {
+               context.writeCodeword(HighLevelEncoder.UPPER_SHIFT);
+               context.writeCodeword((char)(c - 128 + 1));
+               context.Pos++;
+            }
+            else
+            {
+               context.writeCodeword((char)(c + 1));
+               context.Pos++;
+            }
+
+         }
+      }
+
+      private static char encodeASCIIDigits(char digit1, char digit2)
+      {
+         if (HighLevelEncoder.isDigit(digit1) && HighLevelEncoder.isDigit(digit2))
+         {
+            int num = (digit1 - 48) * 10 + (digit2 - 48);
+            return (char)(num + 130);
+         }
+         throw new ArgumentException("not digits: " + digit1 + digit2);
+      }
+   }
+}