1 files changed, 152 insertions, 0 deletions
diff --git a/fxbarcode/datamatrix/BC_EdifactEncoder.cpp b/fxbarcode/datamatrix/BC_EdifactEncoder.cpp
new file mode 100644
index 0000000000..61eea93d33
--- /dev/null
+++ b/fxbarcode/datamatrix/BC_EdifactEncoder.cpp
@@ -0,0 +1,152 @@
+// 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/common/BC_CommonBitMatrix.h"
+#include "fxbarcode/datamatrix/BC_EdifactEncoder.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_EdifactEncoder::CBC_EdifactEncoder() {}
+CBC_EdifactEncoder::~CBC_EdifactEncoder() {}
+int32_t CBC_EdifactEncoder::getEncodingMode() {
+  return EDIFACT_ENCODATION;
+}
+void CBC_EdifactEncoder::Encode(CBC_EncoderContext& context, int32_t& e) {
+  CFX_WideString buffer;
+  while (context.hasMoreCharacters()) {
+    wchar_t c = context.getCurrentChar();
+    encodeChar(c, buffer, e);
+    if (e != BCExceptionNO) {
+      return;
+    }
+    context.m_pos++;
+    int32_t count = buffer.GetLength();
+    if (count >= 4) {
+      context.writeCodewords(encodeToCodewords(buffer, 0, e));
+      if (e != BCExceptionNO) {
+        return;
+      }
+      buffer.Delete(0, 4);
+      int32_t newMode = CBC_HighLevelEncoder::lookAheadTest(
+          context.m_msg, context.m_pos, getEncodingMode());
+      if (newMode != getEncodingMode()) {
+        context.signalEncoderChange(ASCII_ENCODATION);
+        break;
+      }
+    }
+  }
+  buffer += (wchar_t)31;
+  handleEOD(context, buffer, e);
+}
+void CBC_EdifactEncoder::handleEOD(CBC_EncoderContext& context,
+                                   CFX_WideString buffer,
+                                   int32_t& e) {
+  int32_t count = buffer.GetLength();
+  if (count == 0) {
+    return;
+  }
+  if (count == 1) {
+    context.updateSymbolInfo(e);
+    if (e != BCExceptionNO) {
+      return;
+    }
+    int32_t available =
+        context.m_symbolInfo->m_dataCapacity - context.getCodewordCount();
+    int32_t remaining = context.getRemainingCharacters();
+    if (remaining == 0 && available <= 2) {
+      return;
+    }
+  }
+  if (count > 4) {
+    e = BCExceptionIllegalStateCountMustNotExceed4;
+    return;
+  }
+  int32_t restChars = count - 1;
+  CFX_WideString encoded = encodeToCodewords(buffer, 0, e);
+  if (e != BCExceptionNO) {
+    return;
+  }
+  bool endOfSymbolReached = !context.hasMoreCharacters();
+  bool restInAscii = endOfSymbolReached && restChars <= 2;
+  if (restChars <= 2) {
+    context.updateSymbolInfo(context.getCodewordCount() + restChars, e);
+    if (e != BCExceptionNO) {
+      return;
+    }
+    int32_t available =
+        context.m_symbolInfo->m_dataCapacity - context.getCodewordCount();
+    if (available >= 3) {
+      restInAscii = false;
+      context.updateSymbolInfo(context.getCodewordCount() + encoded.GetLength(),
+                               e);
+      if (e != BCExceptionNO) {
+        return;
+      }
+    }
+  }
+  if (restInAscii) {
+    context.resetSymbolInfo();
+    context.m_pos -= restChars;
+  } else {
+    context.writeCodewords(encoded);
+  }
+  context.signalEncoderChange(ASCII_ENCODATION);
+}
+void CBC_EdifactEncoder::encodeChar(wchar_t c, CFX_WideString& sb, int32_t& e) {
+  if (c >= ' ' && c <= '?') {
+    sb += c;
+  } else if (c >= '@' && c <= '^') {
+    sb += (wchar_t)(c - 64);
+  } else {
+    CBC_HighLevelEncoder::illegalCharacter(c, e);
+  }
+}
+CFX_WideString CBC_EdifactEncoder::encodeToCodewords(CFX_WideString sb,
+                                                     int32_t startPos,
+                                                     int32_t& e) {
+  int32_t len = sb.GetLength() - startPos;
+  if (len == 0) {
+    e = BCExceptionNoContents;
+    return CFX_WideString();
+  }
+  wchar_t c1 = sb.GetAt(startPos);
+  wchar_t c2 = len >= 2 ? sb.GetAt(startPos + 1) : 0;
+  wchar_t c3 = len >= 3 ? sb.GetAt(startPos + 2) : 0;
+  wchar_t c4 = len >= 4 ? sb.GetAt(startPos + 3) : 0;
+  int32_t v = (c1 << 18) + (c2 << 12) + (c3 << 6) + c4;
+  wchar_t cw1 = (wchar_t)((v >> 16) & 255);
+  wchar_t cw2 = (wchar_t)((v >> 8) & 255);
+  wchar_t cw3 = (wchar_t)(v & 255);
+  CFX_WideString res;
+  res += cw1;
+  if (len >= 2) {
+    res += cw2;
+  }
+  if (len >= 3) {
+    res += cw3;
+  }
+  return res;
+}