Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 1 | // Copyright 2014 PDFium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 | |
| 7 | #ifndef FXBARCODE_PDF417_BC_PDF417HIGHLEVELENCODER_H_ |
| 8 | #define FXBARCODE_PDF417_BC_PDF417HIGHLEVELENCODER_H_ |
| 9 | |
| 10 | #include <vector> |
| 11 | |
| 12 | #include "core/fxcrt/fx_string.h" |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame^] | 13 | #include "fxbarcode/pdf417/BC_PDF417.h" |
| 14 | #include "third_party/base/optional.h" |
| 15 | #include "third_party/base/span.h" |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 16 | |
| 17 | class CBC_PDF417HighLevelEncoder { |
| 18 | public: |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame^] | 19 | CBC_PDF417HighLevelEncoder() = delete; |
| 20 | ~CBC_PDF417HighLevelEncoder() = delete; |
| 21 | |
| 22 | static Optional<WideString> EncodeHighLevel(WideStringView msg); |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 23 | |
| 24 | private: |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame^] | 25 | enum class EncodingMode { kUnknown = 0, kText, kByte, kNumeric }; |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 26 | |
Haibo Huang | 49cc930 | 2020-04-27 16:14:24 -0700 | [diff] [blame^] | 27 | enum class SubMode { kAlpha = 0, kLower, kMixed, kPunctuation }; |
| 28 | |
| 29 | static SubMode EncodeText(const WideString& msg, |
| 30 | size_t startpos, |
| 31 | size_t count, |
| 32 | SubMode initialSubmode, |
| 33 | WideString* sb); |
| 34 | static void EncodeBinary(pdfium::span<const uint8_t> bytes, |
| 35 | size_t startpos, |
| 36 | size_t count, |
| 37 | EncodingMode startmode, |
| 38 | WideString* sb); |
| 39 | static void EncodeNumeric(const WideString& msg, |
| 40 | size_t startpos, |
| 41 | size_t count, |
| 42 | WideString* sb); |
| 43 | static size_t DetermineConsecutiveDigitCount(WideString msg, size_t startpos); |
| 44 | static size_t DetermineConsecutiveTextCount(WideString msg, size_t startpos); |
| 45 | static Optional<size_t> DetermineConsecutiveBinaryCount( |
| 46 | WideString msg, |
| 47 | std::vector<uint8_t>* bytes, |
| 48 | size_t startpos); |
| 49 | |
| 50 | friend class PDF417HighLevelEncoderTest_ConsecutiveBinaryCount_Test; |
| 51 | friend class PDF417HighLevelEncoderTest_ConsecutiveDigitCount_Test; |
| 52 | friend class PDF417HighLevelEncoderTest_ConsecutiveTextCount_Test; |
| 53 | friend class PDF417HighLevelEncoderTest_EncodeBinary_Test; |
| 54 | friend class PDF417HighLevelEncoderTest_EncodeHighLevel_Test; |
| 55 | friend class PDF417HighLevelEncoderTest_EncodeNumeric_Test; |
| 56 | friend class PDF417HighLevelEncoderTest_EncodeText_Test; |
Philip P. Moltmann | d904c1e | 2018-03-19 09:26:45 -0700 | [diff] [blame] | 57 | }; |
| 58 | |
| 59 | #endif // FXBARCODE_PDF417_BC_PDF417HIGHLEVELENCODER_H_ |