1 files changed, 79 insertions, 0 deletions
diff --git a/xfa/src/fxbarcode/src/BC_Base256Encoder.cpp b/xfa/src/fxbarcode/src/BC_Base256Encoder.cpp
new file mode 100644
index 0000000000..c0e1f46fd4
--- /dev/null
+++ b/xfa/src/fxbarcode/src/BC_Base256Encoder.cpp
@@ -0,0 +1,79 @@
+// 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
+
+#include "barcode.h"
+#include "include/BC_Encoder.h"
+#include "include/BC_Dimension.h"
+#include "include/BC_SymbolShapeHint.h"
+#include "include/BC_SymbolInfo.h"
+#include "include/BC_EncoderContext.h"
+#include "include/BC_HighLevelEncoder.h"
+#include "include/BC_Base256Encoder.h"
+CBC_Base256Encoder::CBC_Base256Encoder()
+{
+}
+CBC_Base256Encoder::~CBC_Base256Encoder()
+{
+}
+FX_INT32 CBC_Base256Encoder::getEncodingMode()
+{
+    return BASE256_ENCODATION;
+}
+void CBC_Base256Encoder::Encode(CBC_EncoderContext &context, FX_INT32 &e)
+{
+    CFX_WideString buffer;
+    buffer += (FX_WCHAR)'\0';
+    while (context.hasMoreCharacters()) {
+        FX_WCHAR c = context.getCurrentChar();
+        buffer += c;
+        context.m_pos++;
+        FX_INT32 newMode = CBC_HighLevelEncoder::lookAheadTest(context.m_msg, context.m_pos, getEncodingMode());
+        if (newMode != getEncodingMode()) {
+            context.signalEncoderChange(newMode);
+            break;
+        }
+    }
+    FX_INT32 dataCount = buffer.GetLength() - 1;
+    FX_CHAR buf[128];
+#if defined(_FX_WINAPI_PARTITION_APP_)
+    memset(buf, 0, sizeof(FX_CHAR) * 128);
+    _itoa_s(dataCount, buf, 128, 10);
+#else
+    FXSYS_itoa(dataCount, buf, 10);
+#endif
+    buffer.SetAt(0, FX_WCHAR(*buf) - '0');
+    FX_INT32 lengthFieldSize = 1;
+    FX_INT32 currentSize = context.getCodewordCount() + dataCount + lengthFieldSize;
+    context.updateSymbolInfo(currentSize, e);
+    if (e != BCExceptionNO) {
+        return;
+    }
+    FX_BOOL mustPad = (context.m_symbolInfo->m_dataCapacity - currentSize) > 0;
+    if (context.hasMoreCharacters() || mustPad) {
+        if (dataCount <= 249) {
+            buffer.SetAt(0, (FX_WCHAR) dataCount);
+        } else if (dataCount > 249 && dataCount <= 1555) {
+            buffer.SetAt(0, (FX_WCHAR) ((dataCount / 250) + 249));
+            buffer.Insert(1, (FX_WCHAR) (dataCount % 250));
+        } else {
+            e = BCExceptionIllegalStateMessageLengthInvalid;
+            return;
+        }
+    }
+    for (FX_INT32 i = 0, c = buffer.GetLength(); i < c; i++) {
+        context.writeCodeword(randomize255State(buffer.GetAt(i), context.getCodewordCount() + 1));
+    }
+}
+FX_WCHAR CBC_Base256Encoder::randomize255State(FX_WCHAR ch, FX_INT32 codewordPosition)
+{
+    FX_INT32 pseudoRandom = ((149 * codewordPosition) % 255) + 1;
+    FX_INT32 tempVariable = ch + pseudoRandom;
+    if (tempVariable <= 255) {
+        return (FX_WCHAR) tempVariable;
+    } else {
+        return (FX_WCHAR) (tempVariable - 256);
+    }
+}