1 files changed, 87 insertions, 0 deletions
diff --git a/fxbarcode/datamatrix/BC_Base256Encoder.cpp b/fxbarcode/datamatrix/BC_Base256Encoder.cpp
new file mode 100644
index 0000000000..1b8db85bdd
--- /dev/null
+++ b/fxbarcode/datamatrix/BC_Base256Encoder.cpp
@@ -0,0 +1,87 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+// Original code is licensed as follows:
+/*
+ * 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.
+ */
+
+#include "fxbarcode/BC_Dimension.h"
+#include "fxbarcode/datamatrix/BC_Base256Encoder.h"
+#include "fxbarcode/datamatrix/BC_Encoder.h"
+#include "fxbarcode/datamatrix/BC_EncoderContext.h"
+#include "fxbarcode/datamatrix/BC_HighLevelEncoder.h"
+#include "fxbarcode/datamatrix/BC_SymbolInfo.h"
+#include "fxbarcode/datamatrix/BC_SymbolShapeHint.h"
+
+CBC_Base256Encoder::CBC_Base256Encoder() {}
+CBC_Base256Encoder::~CBC_Base256Encoder() {}
+int32_t CBC_Base256Encoder::getEncodingMode() {
+  return BASE256_ENCODATION;
+}
+void CBC_Base256Encoder::Encode(CBC_EncoderContext& context, int32_t& e) {
+  CFX_WideString buffer;
+  buffer += (wchar_t)'\0';
+  while (context.hasMoreCharacters()) {
+    wchar_t c = context.getCurrentChar();
+    buffer += c;
+    context.m_pos++;
+    int32_t newMode = CBC_HighLevelEncoder::lookAheadTest(
+        context.m_msg, context.m_pos, getEncodingMode());
+    if (newMode != getEncodingMode()) {
+      context.signalEncoderChange(newMode);
+      break;
+    }
+  }
+  int32_t dataCount = buffer.GetLength() - 1;
+  char buf[128];
+  FXSYS_itoa(dataCount, buf, 10);
+  buffer.SetAt(0, wchar_t(*buf) - '0');
+  int32_t lengthFieldSize = 1;
+  int32_t currentSize =
+      context.getCodewordCount() + dataCount + lengthFieldSize;
+  context.updateSymbolInfo(currentSize, e);
+  if (e != BCExceptionNO) {
+    return;
+  }
+  bool mustPad = (context.m_symbolInfo->m_dataCapacity - currentSize) > 0;
+  if (context.hasMoreCharacters() || mustPad) {
+    if (dataCount <= 249) {
+      buffer.SetAt(0, (wchar_t)dataCount);
+    } else if (dataCount > 249 && dataCount <= 1555) {
+      buffer.SetAt(0, (wchar_t)((dataCount / 250) + 249));
+      buffer.Insert(1, (wchar_t)(dataCount % 250));
+    } else {
+      e = BCExceptionIllegalStateMessageLengthInvalid;
+      return;
+    }
+  }
+  for (int32_t i = 0, c = buffer.GetLength(); i < c; i++) {
+    context.writeCodeword(
+        randomize255State(buffer.GetAt(i), context.getCodewordCount() + 1));
+  }
+}
+wchar_t CBC_Base256Encoder::randomize255State(wchar_t ch,
+                                              int32_t codewordPosition) {
+  int32_t pseudoRandom = ((149 * codewordPosition) % 255) + 1;
+  int32_t tempVariable = ch + pseudoRandom;
+  if (tempVariable <= 255) {
+    return (wchar_t)tempVariable;
+  } else {
+    return (wchar_t)(tempVariable - 256);
+  }
+}