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// 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
#ifndef FXBARCODE_DATAMATRIX_BC_C40ENCODER_H_
#define FXBARCODE_DATAMATRIX_BC_C40ENCODER_H_
#include "core/fxcrt/widestring.h"
#include "fxbarcode/datamatrix/BC_Encoder.h"
class CBC_C40Encoder : public CBC_Encoder {
public:
CBC_C40Encoder();
~CBC_C40Encoder() override;
// CBC_Encoder
int32_t getEncodingMode() override;
void Encode(CBC_EncoderContext& context, int32_t& e) override;
static void writeNextTriplet(CBC_EncoderContext& context, WideString& buffer);
virtual void handleEOD(CBC_EncoderContext& context,
WideString& buffer,
int32_t& e);
virtual int32_t encodeChar(wchar_t c, WideString& sb, int32_t& e);
private:
// Moves back by 1 position in |context| and adjusts |buffer| accordingly
// using |lastCharSize|. Returns the length of the current character in
// |context| after adjusting the position. If the character cannot be encoded,
// return -1.
int32_t BacktrackOneCharacter(CBC_EncoderContext* context,
WideString* buffer,
int32_t lastCharSize);
};
#endif // FXBARCODE_DATAMATRIX_BC_C40ENCODER_H_
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