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60 lines
2.3 KiB
60 lines
2.3 KiB
4 months ago
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// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef FXBARCODE_PDF417_BC_PDF417HIGHLEVELENCODER_H_
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#define FXBARCODE_PDF417_BC_PDF417HIGHLEVELENCODER_H_
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#include <vector>
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#include "core/fxcrt/fx_string.h"
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#include "fxbarcode/pdf417/BC_PDF417.h"
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#include "third_party/base/optional.h"
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#include "third_party/base/span.h"
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class CBC_PDF417HighLevelEncoder {
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public:
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CBC_PDF417HighLevelEncoder() = delete;
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~CBC_PDF417HighLevelEncoder() = delete;
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static Optional<WideString> EncodeHighLevel(WideStringView msg);
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private:
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enum class EncodingMode { kUnknown = 0, kText, kByte, kNumeric };
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enum class SubMode { kAlpha = 0, kLower, kMixed, kPunctuation };
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static SubMode EncodeText(const WideString& msg,
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size_t startpos,
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size_t count,
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SubMode initialSubmode,
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WideString* sb);
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static void EncodeBinary(pdfium::span<const uint8_t> bytes,
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size_t startpos,
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size_t count,
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EncodingMode startmode,
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WideString* sb);
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static void EncodeNumeric(const WideString& msg,
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size_t startpos,
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size_t count,
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WideString* sb);
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static size_t DetermineConsecutiveDigitCount(WideString msg, size_t startpos);
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static size_t DetermineConsecutiveTextCount(WideString msg, size_t startpos);
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static Optional<size_t> DetermineConsecutiveBinaryCount(
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WideString msg,
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std::vector<uint8_t>* bytes,
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size_t startpos);
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friend class PDF417HighLevelEncoderTest_ConsecutiveBinaryCount_Test;
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friend class PDF417HighLevelEncoderTest_ConsecutiveDigitCount_Test;
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friend class PDF417HighLevelEncoderTest_ConsecutiveTextCount_Test;
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friend class PDF417HighLevelEncoderTest_EncodeBinary_Test;
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friend class PDF417HighLevelEncoderTest_EncodeHighLevel_Test;
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friend class PDF417HighLevelEncoderTest_EncodeNumeric_Test;
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friend class PDF417HighLevelEncoderTest_EncodeText_Test;
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};
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#endif // FXBARCODE_PDF417_BC_PDF417HIGHLEVELENCODER_H_
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