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| 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 2007 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 "xfa/src/fxbarcode/BC_UtilCodingConvert.h" | |
| 24 #include "xfa/src/fxbarcode/common/BC_CommonBitSource.h" | |
| 25 #include "xfa/src/fxbarcode/common/BC_CommonCharacterSetECI.h" | |
| 26 #include "xfa/src/fxbarcode/common/BC_CommonDecoderResult.h" | |
| 27 #include "xfa/src/fxbarcode/common/BC_CommonECI.h" | |
| 28 #include "xfa/src/fxbarcode/qrcode/BC_QRCoderMode.h" | |
| 29 #include "xfa/src/fxbarcode/qrcode/BC_QRDecodedBitStreamParser.h" | |
| 30 | |
| 31 const FX_CHAR* CBC_QRDecodedBitStreamParser::UTF_8 = "utf8"; | |
| 32 const FX_CHAR CBC_QRDecodedBitStreamParser::ALPHANUMERIC_CHARS[45] = { | |
| 33 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', | |
| 34 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', | |
| 35 'U', 'V', 'W', 'X', 'Y', 'Z', ' ', '$', '%', '*', '+', '-', '.', '/', ':'}; | |
| 36 | |
| 37 CBC_QRDecodedBitStreamParser::CBC_QRDecodedBitStreamParser() {} | |
| 38 CBC_QRDecodedBitStreamParser::~CBC_QRDecodedBitStreamParser() {} | |
| 39 CBC_CommonDecoderResult* CBC_QRDecodedBitStreamParser::Decode( | |
| 40 CFX_ByteArray* bytes, | |
| 41 CBC_QRCoderVersion* version, | |
| 42 CBC_QRCoderErrorCorrectionLevel* ecLevel, | |
| 43 int32_t byteModeDecode, | |
| 44 int32_t& e) { | |
| 45 CBC_CommonBitSource bits(bytes); | |
| 46 CFX_ByteString result; | |
| 47 CBC_CommonCharacterSetECI* currentCharacterSetECI = NULL; | |
| 48 FX_BOOL fc1Infact = FALSE; | |
| 49 CFX_Int32Array byteSegments; | |
| 50 CBC_QRCoderMode* mode = NULL; | |
| 51 do { | |
| 52 if (bits.Available() < 4) { | |
| 53 mode = CBC_QRCoderMode::sTERMINATOR; | |
| 54 } else { | |
| 55 int32_t iTemp1 = bits.ReadBits(4, e); | |
| 56 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 57 mode = CBC_QRCoderMode::ForBits(iTemp1, e); | |
| 58 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 59 if (mode == NULL) { | |
| 60 e = BCExceptionUnSupportMode; | |
| 61 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 62 } | |
| 63 } | |
| 64 if (!(mode == CBC_QRCoderMode::sTERMINATOR)) { | |
| 65 if (mode == CBC_QRCoderMode::sFNC1_FIRST_POSITION || | |
| 66 mode == CBC_QRCoderMode::sFNC1_SECOND_POSITION) { | |
| 67 fc1Infact = TRUE; | |
| 68 } else if (mode == CBC_QRCoderMode::sSTRUCTURED_APPEND) { | |
| 69 bits.ReadBits(16, e); | |
| 70 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 71 } else if (mode == CBC_QRCoderMode::sECI) { | |
| 72 int32_t value = ParseECIValue(&bits, e); | |
| 73 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 74 currentCharacterSetECI = | |
| 75 CBC_CommonCharacterSetECI::GetCharacterSetECIByValue(value); | |
| 76 } else { | |
| 77 if (mode == CBC_QRCoderMode::sGBK) { | |
| 78 bits.ReadBits(4, e); | |
| 79 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 80 } | |
| 81 int32_t numBits = mode->GetCharacterCountBits(version, e); | |
| 82 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 83 int32_t count = bits.ReadBits(numBits, e); | |
| 84 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 85 if (mode == CBC_QRCoderMode::sNUMERIC) { | |
| 86 DecodeNumericSegment(&bits, result, count, e); | |
| 87 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 88 } else if (mode == CBC_QRCoderMode::sALPHANUMERIC) { | |
| 89 DecodeAlphanumericSegment(&bits, result, count, fc1Infact, e); | |
| 90 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 91 } else if (mode == CBC_QRCoderMode::sBYTE) { | |
| 92 DecodeByteSegment(&bits, result, count, currentCharacterSetECI, | |
| 93 &byteSegments, byteModeDecode, e); | |
| 94 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 95 } else if (mode == CBC_QRCoderMode::sGBK) { | |
| 96 DecodeGBKSegment(&bits, result, count, e); | |
| 97 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 98 } else if (mode == CBC_QRCoderMode::sKANJI) { | |
| 99 DecodeKanjiSegment(&bits, result, count, e); | |
| 100 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 101 } else { | |
| 102 e = BCExceptionUnSupportMode; | |
| 103 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 104 } | |
| 105 } | |
| 106 } | |
| 107 } while (!(mode == CBC_QRCoderMode::sTERMINATOR)); | |
| 108 CBC_CommonDecoderResult* tempCd = new CBC_CommonDecoderResult(); | |
| 109 tempCd->Init(*bytes, result, byteSegments, ecLevel, e); | |
| 110 BC_EXCEPTION_CHECK_ReturnValue(e, NULL); | |
| 111 return tempCd; | |
| 112 } | |
| 113 void CBC_QRDecodedBitStreamParser::DecodeGBKSegment(CBC_CommonBitSource* bits, | |
| 114 CFX_ByteString& result, | |
| 115 int32_t count, | |
| 116 int32_t& e) { | |
| 117 CFX_ByteString buffer; | |
| 118 while (count > 0) { | |
| 119 int32_t twoBytes = bits->ReadBits(13, e); | |
| 120 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 121 int32_t assembledTwoBytes = ((twoBytes / 0x060) << 8) | (twoBytes % 0x060); | |
| 122 if (assembledTwoBytes <= 0x0095d) { | |
| 123 assembledTwoBytes += 0x0a1a1; | |
| 124 } else { | |
| 125 assembledTwoBytes += 0x0a6a1; | |
| 126 } | |
| 127 buffer += (uint8_t)(assembledTwoBytes >> 8); | |
| 128 buffer += (uint8_t)assembledTwoBytes; | |
| 129 count--; | |
| 130 } | |
| 131 CBC_UtilCodingConvert::LocaleToUtf8(buffer, result); | |
| 132 } | |
| 133 void CBC_QRDecodedBitStreamParser::DecodeKanjiSegment(CBC_CommonBitSource* bits, | |
| 134 CFX_ByteString& result, | |
| 135 int32_t count, | |
| 136 int32_t& e) { | |
| 137 CFX_ByteString buffer; | |
| 138 while (count > 0) { | |
| 139 int32_t twoBytes = bits->ReadBits(13, e); | |
| 140 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 141 int32_t assembledTwoBytes = ((twoBytes / 0x0c0) << 8) | (twoBytes % 0x0c0); | |
| 142 if (assembledTwoBytes <= 0x01f00) { | |
| 143 assembledTwoBytes += 0x08140; | |
| 144 } else { | |
| 145 assembledTwoBytes += 0x0c140; | |
| 146 } | |
| 147 buffer += (uint8_t)(assembledTwoBytes >> 8); | |
| 148 buffer += (uint8_t)assembledTwoBytes; | |
| 149 count--; | |
| 150 } | |
| 151 CBC_UtilCodingConvert::LocaleToUtf8(buffer, result); | |
| 152 } | |
| 153 void CBC_QRDecodedBitStreamParser::DecodeByteSegment( | |
| 154 CBC_CommonBitSource* bits, | |
| 155 CFX_ByteString& result, | |
| 156 int32_t count, | |
| 157 CBC_CommonCharacterSetECI* currentCharacterSetECI, | |
| 158 CFX_Int32Array* byteSegments, | |
| 159 int32_t byteModeDecode, | |
| 160 int32_t& e) { | |
| 161 if (count < 0) { | |
| 162 e = BCExceptionNotFound; | |
| 163 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 164 } | |
| 165 if ((count << 3) > bits->Available()) { | |
| 166 e = BCExceptionRead; | |
| 167 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 168 } | |
| 169 uint8_t* readBytes = FX_Alloc(uint8_t, count); | |
| 170 FXSYS_memset(readBytes, 0x00, count); | |
| 171 for (int32_t i = 0; i < count; i++) { | |
| 172 readBytes[i] = (uint8_t)bits->ReadBits(8, e); | |
| 173 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 174 } | |
| 175 CFX_ByteString bs(readBytes, count); | |
| 176 result += bs; | |
| 177 FX_Free(readBytes); | |
| 178 } | |
| 179 void CBC_QRDecodedBitStreamParser::DecodeAlphanumericSegment( | |
| 180 CBC_CommonBitSource* bits, | |
| 181 CFX_ByteString& result, | |
| 182 int32_t count, | |
| 183 FX_BOOL fac1InEffect, | |
| 184 int32_t& e) { | |
| 185 int32_t start = result.GetLength(); | |
| 186 while (count > 1) { | |
| 187 int32_t nextTwoCharsBits = bits->ReadBits(11, e); | |
| 188 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 189 BC_FX_ByteString_Append(result, 1, | |
| 190 ALPHANUMERIC_CHARS[nextTwoCharsBits / 45]); | |
| 191 BC_FX_ByteString_Append(result, 1, | |
| 192 ALPHANUMERIC_CHARS[nextTwoCharsBits % 45]); | |
| 193 count -= 2; | |
| 194 } | |
| 195 if (count == 1) { | |
| 196 int32_t itemp = bits->ReadBits(6, e); | |
| 197 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 198 BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[itemp]); | |
| 199 } | |
| 200 if (fac1InEffect) { | |
| 201 for (int32_t i = start; i < result.GetLength(); i++) { | |
| 202 if (result[i] == '%') { | |
| 203 if ((i < result.GetLength() - 1) && result[i + 1] == '%') { | |
| 204 result.Delete(i + 1, 1); | |
| 205 } else { | |
| 206 result.SetAt(i, (FX_CHAR)0x1d); | |
| 207 } | |
| 208 } | |
| 209 } | |
| 210 } | |
| 211 } | |
| 212 void CBC_QRDecodedBitStreamParser::DecodeNumericSegment( | |
| 213 CBC_CommonBitSource* bits, | |
| 214 CFX_ByteString& result, | |
| 215 int32_t count, | |
| 216 int32_t& e) { | |
| 217 while (count >= 3) { | |
| 218 int32_t threeDigitsBits = bits->ReadBits(10, e); | |
| 219 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 220 if (threeDigitsBits >= 1000) { | |
| 221 e = BCExceptionRead; | |
| 222 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 223 } | |
| 224 BC_FX_ByteString_Append(result, 1, | |
| 225 ALPHANUMERIC_CHARS[threeDigitsBits / 100]); | |
| 226 BC_FX_ByteString_Append(result, 1, | |
| 227 ALPHANUMERIC_CHARS[(threeDigitsBits / 10) % 10]); | |
| 228 BC_FX_ByteString_Append(result, 1, | |
| 229 ALPHANUMERIC_CHARS[threeDigitsBits % 10]); | |
| 230 count -= 3; | |
| 231 } | |
| 232 if (count == 2) { | |
| 233 int32_t twoDigitBits = bits->ReadBits(7, e); | |
| 234 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 235 if (twoDigitBits >= 100) { | |
| 236 e = BCExceptionRead; | |
| 237 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 238 } | |
| 239 BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[twoDigitBits / 10]); | |
| 240 BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[twoDigitBits % 10]); | |
| 241 } else if (count == 1) { | |
| 242 int32_t digitBits = bits->ReadBits(4, e); | |
| 243 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 244 if (digitBits >= 10) { | |
| 245 e = BCExceptionRead; | |
| 246 BC_EXCEPTION_CHECK_ReturnVoid(e); | |
| 247 } | |
| 248 BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[digitBits]); | |
| 249 } | |
| 250 } | |
| 251 const CFX_ByteString CBC_QRDecodedBitStreamParser::GuessEncoding( | |
| 252 CFX_ByteArray* bytes) { | |
| 253 return *UTF_8; | |
| 254 } | |
| 255 int32_t CBC_QRDecodedBitStreamParser::ParseECIValue(CBC_CommonBitSource* bits, | |
| 256 int32_t& e) { | |
| 257 int32_t firstByte = bits->ReadBits(8, e); | |
| 258 BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
| 259 if ((firstByte & 0x80) == 0) { | |
| 260 return firstByte & 0x7f; | |
| 261 } else if ((firstByte & 0xc0) == 0x80) { | |
| 262 int32_t secondByte = bits->ReadBits(8, e); | |
| 263 BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
| 264 return ((firstByte & 0x3f) << 8) | secondByte; | |
| 265 } else if ((firstByte & 0xe0) == 0xc0) { | |
| 266 int32_t secondThirdByte = bits->ReadBits(16, e); | |
| 267 BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
| 268 return ((firstByte & 0x1f) << 16) | secondThirdByte; | |
| 269 } | |
| 270 e = BCExceptionBadECI; | |
| 271 BC_EXCEPTION_CHECK_ReturnValue(e, 0); | |
| 272 return 0; | |
| 273 } | |
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Chromium Code Reviews
Issue 1803723002:
Move xfa/src up to xfa/. (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@master