blob: 8bea47ba5f648c8d1cc5a8a197e4d5362df8860c [file] [log] [blame]
// 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
CBC_HighLevelEncoder::Encoding GetEncodingMode() override;
bool Encode(CBC_EncoderContext* context) override;
static void WriteNextTriplet(CBC_EncoderContext* context, WideString* buffer);
virtual bool HandleEOD(CBC_EncoderContext* context, WideString* buffer);
// Returns the number of characters appended to |sb|, or 0 on failure.
virtual int32_t EncodeChar(wchar_t c, WideString* sb);
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_