1 files changed, 153 insertions, 0 deletions
diff --git a/xfa/src/fxbarcode/datamatrix/BC_EdifactEncoder.cpp b/xfa/src/fxbarcode/datamatrix/BC_EdifactEncoder.cpp
new file mode 100644
index 0000000000..d1e84af73e
--- /dev/null
+++ b/xfa/src/fxbarcode/datamatrix/BC_EdifactEncoder.cpp
@@ -0,0 +1,153 @@
+// 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 "../barcode.h"
+#include "../common/BC_CommonBitMatrix.h"
+#include "../BC_Dimension.h"
+#include "BC_Encoder.h"
+#include "BC_SymbolShapeHint.h"
+#include "BC_SymbolInfo.h"
+#include "BC_EncoderContext.h"
+#include "BC_HighLevelEncoder.h"
+#include "BC_EdifactEncoder.h"
+CBC_EdifactEncoder::CBC_EdifactEncoder()
+{
+}
+CBC_EdifactEncoder::~CBC_EdifactEncoder()
+{
+}
+FX_INT32 CBC_EdifactEncoder::getEncodingMode()
+{
+    return EDIFACT_ENCODATION;
+}
+void CBC_EdifactEncoder::Encode(CBC_EncoderContext &context, FX_INT32 &e)
+{
+    CFX_WideString buffer;
+    while (context.hasMoreCharacters()) {
+        FX_WCHAR c = context.getCurrentChar();
+        encodeChar(c, buffer, e);
+        if (e != BCExceptionNO) {
+            return;
+        }
+        context.m_pos++;
+        FX_INT32 count = buffer.GetLength();
+        if (count >= 4) {
+            context.writeCodewords(encodeToCodewords(buffer, 0, e));
+            if (e != BCExceptionNO) {
+                return;
+            }
+            buffer.Delete(0, 4);
+            FX_INT32 newMode = CBC_HighLevelEncoder::lookAheadTest(context.m_msg, context.m_pos, getEncodingMode());
+            if (newMode != getEncodingMode()) {
+                context.signalEncoderChange(ASCII_ENCODATION);
+                break;
+            }
+        }
+    }
+    buffer += (FX_WCHAR)31;
+    handleEOD(context, buffer, e);
+}
+void CBC_EdifactEncoder::handleEOD(CBC_EncoderContext &context, CFX_WideString buffer, FX_INT32 &e)
+{
+    FX_INT32 count = buffer.GetLength();
+    if (count == 0) {
+        return;
+    }
+    if (count == 1) {
+        context.updateSymbolInfo(e);
+        if (e != BCExceptionNO) {
+            return;
+        }
+        FX_INT32 available = context.m_symbolInfo->m_dataCapacity - context.getCodewordCount();
+        FX_INT32 remaining = context.getRemainingCharacters();
+        if (remaining == 0 && available <= 2) {
+            return;
+        }
+    }
+    if (count > 4) {
+        e = BCExceptionIllegalStateCountMustNotExceed4;
+        return;
+    }
+    FX_INT32 restChars = count - 1;
+    CFX_WideString encoded = encodeToCodewords(buffer, 0, e);
+    if (e != BCExceptionNO) {
+        return;
+    }
+    FX_BOOL endOfSymbolReached = !context.hasMoreCharacters();
+    FX_BOOL restInAscii = endOfSymbolReached && restChars <= 2;
+    if (restChars <= 2) {
+        context.updateSymbolInfo(context.getCodewordCount() + restChars, e);
+        if (e != BCExceptionNO) {
+            return;
+        }
+        FX_INT32 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(FX_WCHAR c, CFX_WideString &sb, FX_INT32 &e)
+{
+    if (c >= ' ' && c <= '?') {
+        sb += c;
+    } else if (c >= '@' && c <= '^') {
+        sb += (FX_WCHAR)(c - 64);
+    } else {
+        CBC_HighLevelEncoder::illegalCharacter(c, e);
+    }
+}
+CFX_WideString CBC_EdifactEncoder::encodeToCodewords(CFX_WideString sb, FX_INT32 startPos, FX_INT32 &e)
+{
+    FX_INT32 len = sb.GetLength() - startPos;
+    if (len == 0) {
+        e = BCExceptionNoContents;
+        return (FX_LPWSTR)"";
+    }
+    FX_WCHAR c1 = sb.GetAt(startPos);
+    FX_WCHAR c2 = len >= 2 ? sb.GetAt(startPos + 1) : 0;
+    FX_WCHAR c3 = len >= 3 ? sb.GetAt(startPos + 2) : 0;
+    FX_WCHAR c4 = len >= 4 ? sb.GetAt(startPos + 3) : 0;
+    FX_INT32 v = (c1 << 18) + (c2 << 12) + (c3 << 6) + c4;
+    FX_WCHAR cw1 = (FX_WCHAR) ((v >> 16) & 255);
+    FX_WCHAR cw2 = (FX_WCHAR) ((v >> 8) & 255);
+    FX_WCHAR cw3 = (FX_WCHAR) (v & 255);
+    CFX_WideString res;
+    res += cw1;
+    if (len >= 2) {
+        res += cw2;
+    }
+    if (len >= 3) {
+        res += cw3;
+    }
+    return res;
+}