// 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 // Original code is licensed as follows: /* * Copyright 2010 ZXing authors * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include "fxbarcode/oned/BC_OnedCode39Writer.h" #include <memory> #include "fxbarcode/BC_Writer.h" #include "fxbarcode/common/BC_CommonBitMatrix.h" #include "fxbarcode/oned/BC_OneDimWriter.h" namespace { const char kOnedCode39Alphabet[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '-', '.', ' ', '*', '$', '/', '+', '%'}; constexpr size_t kOnedCode39AlphabetLen = FX_ArraySize(kOnedCode39Alphabet); const char kOnedCode39Checksum[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '-', '.', ' ', '$', '/', '+', '%'}; static_assert(FX_ArraySize(kOnedCode39Checksum) == 43, "Wrong size"); const int16_t kOnedCode39CharacterEncoding[] = { 0x0034, 0x0121, 0x0061, 0x0160, 0x0031, 0x0130, 0x0070, 0x0025, 0x0124, 0x0064, 0x0109, 0x0049, 0x0148, 0x0019, 0x0118, 0x0058, 0x000D, 0x010C, 0x004C, 0x001C, 0x0103, 0x0043, 0x0142, 0x0013, 0x0112, 0x0052, 0x0007, 0x0106, 0x0046, 0x0016, 0x0181, 0x00C1, 0x01C0, 0x0091, 0x0190, 0x00D0, 0x0085, 0x0184, 0x00C4, 0x0094, 0x00A8, 0x00A2, 0x008A, 0x002A}; static_assert(FX_ArraySize(kOnedCode39CharacterEncoding) == 44, "Wrong size"); } // namespace CBC_OnedCode39Writer::CBC_OnedCode39Writer() = default; CBC_OnedCode39Writer::~CBC_OnedCode39Writer() = default; bool CBC_OnedCode39Writer::CheckContentValidity( const WideStringView& contents) { for (size_t i = 0; i < contents.GetLength(); i++) { wchar_t ch = contents[i]; if ((ch >= L'0' && ch <= L'9') || (ch >= L'A' && ch <= L'Z') || ch == L'-' || ch == L'.' || ch == L' ' || ch == L'*' || ch == L'$' || ch == L'/' || ch == L'+' || ch == L'%') { continue; } return false; } return true; } WideString CBC_OnedCode39Writer::FilterContents( const WideStringView& contents) { WideString filtercontents; filtercontents.Reserve(contents.GetLength()); for (size_t i = 0; i < contents.GetLength(); i++) { wchar_t ch = contents[i]; if (ch == L'*' && (i == 0 || i == contents.GetLength() - 1)) { continue; } if (ch > 175) { i++; continue; } ch = Upper(ch); if ((ch >= L'0' && ch <= L'9') || (ch >= L'A' && ch <= L'Z') || ch == L'-' || ch == L'.' || ch == L' ' || ch == L'*' || ch == L'$' || ch == L'/' || ch == L'+' || ch == L'%') { filtercontents += ch; } } return filtercontents; } WideString CBC_OnedCode39Writer::RenderTextContents( const WideStringView& contents) { WideString renderContents; for (size_t i = 0; i < contents.GetLength(); i++) { wchar_t ch = contents[i]; if (ch == L'*' && (i == 0 || i == contents.GetLength() - 1)) { continue; } if (ch > 175) { i++; continue; } if ((ch >= L'0' && ch <= L'9') || (ch >= L'A' && ch <= L'Z') || (ch >= L'a' && ch <= L'z') || ch == L'-' || ch == L'.' || ch == L' ' || ch == L'*' || ch == L'$' || ch == L'/' || ch == L'+' || ch == L'%') { renderContents += ch; } } return renderContents; } bool CBC_OnedCode39Writer::SetTextLocation(BC_TEXT_LOC location) { if (location < BC_TEXT_LOC_NONE || location > BC_TEXT_LOC_BELOWEMBED) { return false; } m_locTextLoc = location; return true; } bool CBC_OnedCode39Writer::SetWideNarrowRatio(int8_t ratio) { if (ratio < 2 || ratio > 3) return false; m_iWideNarrRatio = ratio; return true; } uint8_t* CBC_OnedCode39Writer::EncodeWithHint(const ByteString& contents, BCFORMAT format, int32_t& outWidth, int32_t& outHeight, int32_t hints) { if (format != BCFORMAT_CODE_39) return nullptr; return CBC_OneDimWriter::EncodeWithHint(contents, format, outWidth, outHeight, hints); } void CBC_OnedCode39Writer::ToIntArray(int16_t a, int8_t* toReturn) { for (int32_t i = 0; i < 9; i++) { toReturn[i] = (a & (1 << i)) == 0 ? 1 : m_iWideNarrRatio; } } char CBC_OnedCode39Writer::CalcCheckSum(const ByteString& contents) { if (contents.GetLength() > 80) return '*'; int32_t checksum = 0; for (const auto& c : contents) { size_t j = 0; for (; j < kOnedCode39AlphabetLen; j++) { if (kOnedCode39Alphabet[j] == c) { if (c != '*') checksum += j; break; } } if (j >= kOnedCode39AlphabetLen) return '*'; } return kOnedCode39Checksum[checksum % FX_ArraySize(kOnedCode39Checksum)]; } uint8_t* CBC_OnedCode39Writer::EncodeImpl(const ByteString& contents, int32_t& outlength) { char checksum = CalcCheckSum(contents); if (checksum == '*') return nullptr; int8_t widths[9] = {0}; int32_t wideStrideNum = 3; int32_t narrStrideNum = 9 - wideStrideNum; ByteString encodedContents = contents; if (m_bCalcChecksum) encodedContents += checksum; m_iContentLen = encodedContents.GetLength(); int32_t codeWidth = (wideStrideNum * m_iWideNarrRatio + narrStrideNum) * 2 + 1 + m_iContentLen; for (size_t j = 0; j < m_iContentLen; j++) { for (size_t i = 0; i < kOnedCode39AlphabetLen; i++) { if (kOnedCode39Alphabet[i] != encodedContents[j]) continue; ToIntArray(kOnedCode39CharacterEncoding[i], widths); for (size_t k = 0; k < 9; k++) codeWidth += widths[k]; } } outlength = codeWidth; std::unique_ptr<uint8_t, FxFreeDeleter> result(FX_Alloc(uint8_t, codeWidth)); ToIntArray(kOnedCode39CharacterEncoding[39], widths); int32_t e = BCExceptionNO; int32_t pos = AppendPattern(result.get(), 0, widths, 9, 1, e); if (e != BCExceptionNO) return nullptr; int8_t narrowWhite[] = {1}; pos += AppendPattern(result.get(), pos, narrowWhite, 1, 0, e); if (e != BCExceptionNO) return nullptr; for (int32_t l = m_iContentLen - 1; l >= 0; l--) { for (size_t i = 0; i < kOnedCode39AlphabetLen; i++) { if (kOnedCode39Alphabet[i] != encodedContents[l]) continue; ToIntArray(kOnedCode39CharacterEncoding[i], widths); pos += AppendPattern(result.get(), pos, widths, 9, 1, e); if (e != BCExceptionNO) return nullptr; } pos += AppendPattern(result.get(), pos, narrowWhite, 1, 0, e); if (e != BCExceptionNO) return nullptr; } ToIntArray(kOnedCode39CharacterEncoding[39], widths); pos += AppendPattern(result.get(), pos, widths, 9, 1, e); if (e != BCExceptionNO) return nullptr; auto* result_ptr = result.get(); for (int32_t i = 0; i < codeWidth / 2; i++) { result_ptr[i] ^= result_ptr[codeWidth - 1 - i]; result_ptr[codeWidth - 1 - i] ^= result_ptr[i]; result_ptr[i] ^= result_ptr[codeWidth - 1 - i]; } return result.release(); } bool CBC_OnedCode39Writer::encodedContents(const WideStringView& contents, WideString* result) { *result = WideString(contents); if (m_bCalcChecksum && m_bPrintChecksum) { WideString checksumContent = FilterContents(contents); ByteString str = checksumContent.UTF8Encode(); char checksum; checksum = CalcCheckSum(str); if (checksum == '*') return false; str += checksum; *result += checksum; } return true; } bool CBC_OnedCode39Writer::RenderResult(const WideStringView& contents, uint8_t* code, int32_t codeLength) { WideString encodedCon; if (!encodedContents(contents, &encodedCon)) return false; return CBC_OneDimWriter::RenderResult(encodedCon.AsStringView(), code, codeLength); }