moved java files for pre-convert

src/datamatrix/encoder/ASCIIEncoder.java

@@ -0,0 +1,82 @@
+/*
+ * 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.
+ */
+
+package com.google.zxing.datamatrix.encoder;
+
+final class ASCIIEncoder implements Encoder {
+
+  @Override
+  public int getEncodingMode() {
+    return HighLevelEncoder.ASCII_ENCODATION;
+  }
+
+  @Override
+  public void encode(EncoderContext context) {
+    //step B
+    int n = HighLevelEncoder.determineConsecutiveDigitCount(context.getMessage(), context.pos);
+    if (n >= 2) {
+      context.writeCodeword(encodeASCIIDigits(context.getMessage().charAt(context.pos),
+                                              context.getMessage().charAt(context.pos + 1)));
+      context.pos += 2;
+    } else {
+      char c = context.getCurrentChar();
+      int newMode = HighLevelEncoder.lookAheadTest(context.getMessage(), context.pos, getEncodingMode());
+      if (newMode != getEncodingMode()) {
+        switch (newMode) {
+          case HighLevelEncoder.BASE256_ENCODATION:
+            context.writeCodeword(HighLevelEncoder.LATCH_TO_BASE256);
+            context.signalEncoderChange(HighLevelEncoder.BASE256_ENCODATION);
+            return;
+          case HighLevelEncoder.C40_ENCODATION:
+            context.writeCodeword(HighLevelEncoder.LATCH_TO_C40);
+            context.signalEncoderChange(HighLevelEncoder.C40_ENCODATION);
+            return;
+          case HighLevelEncoder.X12_ENCODATION:
+            context.writeCodeword(HighLevelEncoder.LATCH_TO_ANSIX12);
+            context.signalEncoderChange(HighLevelEncoder.X12_ENCODATION);
+            break;
+          case HighLevelEncoder.TEXT_ENCODATION:
+            context.writeCodeword(HighLevelEncoder.LATCH_TO_TEXT);
+            context.signalEncoderChange(HighLevelEncoder.TEXT_ENCODATION);
+            break;
+          case HighLevelEncoder.EDIFACT_ENCODATION:
+            context.writeCodeword(HighLevelEncoder.LATCH_TO_EDIFACT);
+            context.signalEncoderChange(HighLevelEncoder.EDIFACT_ENCODATION);
+            break;
+          default:
+            throw new IllegalStateException("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 IllegalArgumentException("not digits: " + digit1 + digit2);
+  }
+
+}