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// Original code is licensed as follows: 7/* 8 * Copyright 2010 ZXing authors 9 * 10 * Licensed under the Apache License, Version 2.0 (the "License"); 11 * you may not use this file except in compliance with the License. 12 * You may obtain a copy of the License at 13 * 14 * http://www.apache.org/licenses/LICENSE-2.0 15 * 16 * Unless required by applicable law or agreed to in writing, software 17 * distributed under the License is distributed on an "AS IS" BASIS, 18 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 19 * See the License for the specific language governing permissions and 20 * limitations under the License. 21 */ 22 23#include "fxbarcode/oned/BC_OnedCode39Writer.h" 24 25#include <memory> 26 27#include "fxbarcode/BC_Writer.h" 28#include "fxbarcode/common/BC_CommonBitMatrix.h" 29#include "fxbarcode/oned/BC_OneDimWriter.h" 30 31namespace { 32 33const char kOnedCode39Alphabet[] = { 34 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 35 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 36 'U', 'V', 'W', 'X', 'Y', 'Z', '-', '.', ' ', '*', '$', '/', '+', '%'}; 37constexpr size_t kOnedCode39AlphabetLen = FX_ArraySize(kOnedCode39Alphabet); 38 39const char kOnedCode39Checksum[] = { 40 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 41 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 42 'U', 'V', 'W', 'X', 'Y', 'Z', '-', '.', ' ', '$', '/', '+', '%'}; 43static_assert(FX_ArraySize(kOnedCode39Checksum) == 43, "Wrong size"); 44 45const int16_t kOnedCode39CharacterEncoding[] = { 46 0x0034, 0x0121, 0x0061, 0x0160, 0x0031, 0x0130, 0x0070, 0x0025, 0x0124, 47 0x0064, 0x0109, 0x0049, 0x0148, 0x0019, 0x0118, 0x0058, 0x000D, 0x010C, 48 0x004C, 0x001C, 0x0103, 0x0043, 0x0142, 0x0013, 0x0112, 0x0052, 0x0007, 49 0x0106, 0x0046, 0x0016, 0x0181, 0x00C1, 0x01C0, 0x0091, 0x0190, 0x00D0, 50 0x0085, 0x0184, 0x00C4, 0x0094, 0x00A8, 0x00A2, 0x008A, 0x002A}; 51static_assert(FX_ArraySize(kOnedCode39CharacterEncoding) == 44, "Wrong size"); 52 53} // namespace 54 55CBC_OnedCode39Writer::CBC_OnedCode39Writer() : m_iWideNarrRatio(3) {} 56 57CBC_OnedCode39Writer::~CBC_OnedCode39Writer() {} 58 59bool CBC_OnedCode39Writer::CheckContentValidity( 60 const WideStringView& contents) { 61 for (size_t i = 0; i < contents.GetLength(); i++) { 62 wchar_t ch = contents[i]; 63 if ((ch >= L'0' && ch <= L'9') || (ch >= L'A' && ch <= L'Z') || 64 ch == L'-' || ch == L'.' || ch == L' ' || ch == L'*' || ch == L'$' || 65 ch == L'/' || ch == L'+' || ch == L'%') { 66 continue; 67 } 68 return false; 69 } 70 return true; 71} 72 73WideString CBC_OnedCode39Writer::FilterContents( 74 const WideStringView& contents) { 75 WideString filtercontents; 76 for (size_t i = 0; i < contents.GetLength(); i++) { 77 wchar_t ch = contents[i]; 78 if (ch == L'*' && (i == 0 || i == contents.GetLength() - 1)) { 79 continue; 80 } 81 if (ch > 175) { 82 i++; 83 continue; 84 } 85 ch = Upper(ch); 86 if ((ch >= L'0' && ch <= L'9') || (ch >= L'A' && ch <= L'Z') || 87 ch == L'-' || ch == L'.' || ch == L' ' || ch == L'*' || ch == L'$' || 88 ch == L'/' || ch == L'+' || ch == L'%') { 89 filtercontents += ch; 90 } 91 } 92 return filtercontents; 93} 94 95WideString CBC_OnedCode39Writer::RenderTextContents( 96 const WideStringView& contents) { 97 WideString renderContents; 98 for (size_t i = 0; i < contents.GetLength(); i++) { 99 wchar_t ch = contents[i]; 100 if (ch == L'*' && (i == 0 || i == contents.GetLength() - 1)) { 101 continue; 102 } 103 if (ch > 175) { 104 i++; 105 continue; 106 } 107 if ((ch >= L'0' && ch <= L'9') || (ch >= L'A' && ch <= L'Z') || 108 (ch >= L'a' && ch <= L'z') || ch == L'-' || ch == L'.' || ch == L' ' || 109 ch == L'*' || ch == L'$' || ch == L'/' || ch == L'+' || ch == L'%') { 110 renderContents += ch; 111 } 112 } 113 return renderContents; 114} 115 116bool CBC_OnedCode39Writer::SetTextLocation(BC_TEXT_LOC location) { 117 if (location < BC_TEXT_LOC_NONE || location > BC_TEXT_LOC_BELOWEMBED) { 118 return false; 119 } 120 m_locTextLoc = location; 121 return true; 122} 123bool CBC_OnedCode39Writer::SetWideNarrowRatio(int8_t ratio) { 124 if (ratio < 2 || ratio > 3) 125 return false; 126 127 m_iWideNarrRatio = ratio; 128 return true; 129} 130 131uint8_t* CBC_OnedCode39Writer::EncodeWithHint(const ByteString& contents, 132 BCFORMAT format, 133 int32_t& outWidth, 134 int32_t& outHeight, 135 int32_t hints) { 136 if (format != BCFORMAT_CODE_39) 137 return nullptr; 138 return CBC_OneDimWriter::EncodeWithHint(contents, format, outWidth, outHeight, 139 hints); 140} 141 142void CBC_OnedCode39Writer::ToIntArray(int16_t a, int8_t* toReturn) { 143 for (int32_t i = 0; i < 9; i++) { 144 toReturn[i] = (a & (1 << i)) == 0 ? 1 : m_iWideNarrRatio; 145 } 146} 147 148char CBC_OnedCode39Writer::CalcCheckSum(const ByteString& contents) { 149 if (contents.GetLength() > 80) 150 return '*'; 151 152 int32_t checksum = 0; 153 for (const auto& c : contents) { 154 size_t j = 0; 155 for (; j < kOnedCode39AlphabetLen; j++) { 156 if (kOnedCode39Alphabet[j] == c) { 157 if (c != '*') 158 checksum += j; 159 break; 160 } 161 } 162 if (j >= kOnedCode39AlphabetLen) 163 return '*'; 164 } 165 return kOnedCode39Checksum[checksum % FX_ArraySize(kOnedCode39Checksum)]; 166} 167 168uint8_t* CBC_OnedCode39Writer::EncodeImpl(const ByteString& contents, 169 int32_t& outlength) { 170 char checksum = CalcCheckSum(contents); 171 if (checksum == '*') 172 return nullptr; 173 174 int8_t widths[9] = {0}; 175 int32_t wideStrideNum = 3; 176 int32_t narrStrideNum = 9 - wideStrideNum; 177 ByteString encodedContents = contents; 178 if (m_bCalcChecksum) 179 encodedContents += checksum; 180 m_iContentLen = encodedContents.GetLength(); 181 int32_t codeWidth = (wideStrideNum * m_iWideNarrRatio + narrStrideNum) * 2 + 182 1 + m_iContentLen; 183 for (size_t j = 0; j < m_iContentLen; j++) { 184 for (size_t i = 0; i < kOnedCode39AlphabetLen; i++) { 185 if (kOnedCode39Alphabet[i] != encodedContents[j]) 186 continue; 187 188 ToIntArray(kOnedCode39CharacterEncoding[i], widths); 189 for (size_t k = 0; k < 9; k++) 190 codeWidth += widths[k]; 191 } 192 } 193 outlength = codeWidth; 194 std::unique_ptr<uint8_t, FxFreeDeleter> result(FX_Alloc(uint8_t, codeWidth)); 195 ToIntArray(kOnedCode39CharacterEncoding[39], widths); 196 int32_t e = BCExceptionNO; 197 int32_t pos = AppendPattern(result.get(), 0, widths, 9, 1, e); 198 if (e != BCExceptionNO) 199 return nullptr; 200 201 int8_t narrowWhite[] = {1}; 202 pos += AppendPattern(result.get(), pos, narrowWhite, 1, 0, e); 203 if (e != BCExceptionNO) 204 return nullptr; 205 206 for (int32_t l = m_iContentLen - 1; l >= 0; l--) { 207 for (size_t i = 0; i < kOnedCode39AlphabetLen; i++) { 208 if (kOnedCode39Alphabet[i] != encodedContents[l]) 209 continue; 210 211 ToIntArray(kOnedCode39CharacterEncoding[i], widths); 212 pos += AppendPattern(result.get(), pos, widths, 9, 1, e); 213 if (e != BCExceptionNO) 214 return nullptr; 215 } 216 pos += AppendPattern(result.get(), pos, narrowWhite, 1, 0, e); 217 if (e != BCExceptionNO) 218 return nullptr; 219 } 220 ToIntArray(kOnedCode39CharacterEncoding[39], widths); 221 pos += AppendPattern(result.get(), pos, widths, 9, 1, e); 222 if (e != BCExceptionNO) 223 return nullptr; 224 225 auto* result_ptr = result.get(); 226 for (int32_t i = 0; i < codeWidth / 2; i++) { 227 result_ptr[i] ^= result_ptr[codeWidth - 1 - i]; 228 result_ptr[codeWidth - 1 - i] ^= result_ptr[i]; 229 result_ptr[i] ^= result_ptr[codeWidth - 1 - i]; 230 } 231 return result.release(); 232} 233 234bool CBC_OnedCode39Writer::encodedContents(const WideStringView& contents, 235 WideString* result) { 236 *result = WideString(contents); 237 if (m_bCalcChecksum && m_bPrintChecksum) { 238 WideString checksumContent = FilterContents(contents); 239 ByteString str = checksumContent.UTF8Encode(); 240 char checksum; 241 checksum = CalcCheckSum(str); 242 if (checksum == '*') 243 return false; 244 str += checksum; 245 *result += checksum; 246 } 247 return true; 248} 249 250bool CBC_OnedCode39Writer::RenderResult(const WideStringView& contents, 251 uint8_t* code, 252 int32_t codeLength) { 253 WideString encodedCon; 254 if (!encodedContents(contents, &encodedCon)) 255 return false; 256 return CBC_OneDimWriter::RenderResult(encodedCon.AsStringView(), code, 257 codeLength); 258} 259