添加项目文件。

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

@@ -0,0 +1,186 @@
+/*
+ * 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;
+using System.Text;
+
+namespace ZXing.Datamatrix.Encoder
+{
+   internal sealed class EncoderContext
+   {
+      private readonly String msg;
+      private SymbolShapeHint shape;
+      private Dimension minSize;
+      private Dimension maxSize;
+      private readonly StringBuilder codewords;
+      private int pos;
+      private int newEncoding;
+      private SymbolInfo symbolInfo;
+      private int skipAtEnd;
+      private static readonly Encoding encoding;
+
+      static EncoderContext()
+      {
+#if !(WindowsCE || SILVERLIGHT4 || SILVERLIGHT5 || NETFX_CORE || PORTABLE)
+         encoding = Encoding.GetEncoding("ISO-8859-1");
+#elif WindowsCE
+         try
+         {
+            encoding = Encoding.GetEncoding("ISO-8859-1");
+         }
+         catch (PlatformNotSupportedException)
+         {
+            encoding = Encoding.GetEncoding(1252);
+         }
+#else
+         // not fully correct but what else
+         encoding = Encoding.GetEncoding("UTF-8");
+#endif
+      }
+
+      public EncoderContext(String msg)
+      {
+         //From this point on Strings are not Unicode anymore!
+         var msgBinary = encoding.GetBytes(msg);
+         var sb = new StringBuilder(msgBinary.Length);
+         var c = msgBinary.Length;
+         for (int i = 0; i < c; i++)
+         {
+            // TODO: does it works in .Net the same way?
+            var ch = (char)(msgBinary[i] & 0xff);
+            if (ch == '?' && msg[i] != '?')
+            {
+               throw new ArgumentException("Message contains characters outside " + encoding.WebName + " encoding.");
+            }
+            sb.Append(ch);
+         }
+         this.msg = sb.ToString(); //Not Unicode here!
+         shape = SymbolShapeHint.FORCE_NONE;
+         this.codewords = new StringBuilder(msg.Length);
+         newEncoding = -1;
+      }
+
+      public void setSymbolShape(SymbolShapeHint shape)
+      {
+         this.shape = shape;
+      }
+
+      public void setSizeConstraints(Dimension minSize, Dimension maxSize)
+      {
+         this.minSize = minSize;
+         this.maxSize = maxSize;
+      }
+
+      public void setSkipAtEnd(int count)
+      {
+         this.skipAtEnd = count;
+      }
+
+      public char CurrentChar
+      {
+         get { return msg[pos]; }
+      }
+
+      public char Current
+      {
+         get { return msg[pos]; }
+      }
+
+      public void writeCodewords(String codewords)
+      {
+         this.codewords.Append(codewords);
+      }
+
+      public void writeCodeword(char codeword)
+      {
+         this.codewords.Append(codeword);
+      }
+
+      public int CodewordCount
+      {
+         get { return this.codewords.Length; }
+      }
+
+      public void signalEncoderChange(int encoding)
+      {
+         this.newEncoding = encoding;
+      }
+
+      public void resetEncoderSignal()
+      {
+         this.newEncoding = -1;
+      }
+
+      public bool HasMoreCharacters
+      {
+         get { return pos < TotalMessageCharCount; }
+      }
+
+      private int TotalMessageCharCount
+      {
+         get { return msg.Length - skipAtEnd; }
+      }
+
+      public int RemainingCharacters
+      {
+         get { return TotalMessageCharCount - pos; }
+      }
+
+      public void updateSymbolInfo()
+      {
+         updateSymbolInfo(CodewordCount);
+      }
+
+      public void updateSymbolInfo(int len)
+      {
+         if (this.symbolInfo == null || len > this.symbolInfo.dataCapacity)
+         {
+            this.symbolInfo = SymbolInfo.lookup(len, shape, minSize, maxSize, true);
+         }
+      }
+
+      public void resetSymbolInfo()
+      {
+         this.symbolInfo = null;
+      }
+
+      public int Pos
+      {
+         get { return pos; }
+         set { pos = value; }
+      }
+
+      public StringBuilder Codewords
+      {
+         get { return codewords; }
+      }
+
+      public SymbolInfo SymbolInfo
+      {
+         get { return symbolInfo; }
+      }
+
+      public int NewEncoding
+      {
+         get { return newEncoding; }
+      }
+
+      public String Message
+      {
+         get { return msg; }
+      }
+   }
+}