diff options
Diffstat (limited to 'xfa/src/fxbarcode/qrcode/BC_QRDecodedBitStreamParser.cpp')
| -rw-r--r-- | xfa/src/fxbarcode/qrcode/BC_QRDecodedBitStreamParser.cpp | 272 |
1 files changed, 272 insertions, 0 deletions
diff --git a/xfa/src/fxbarcode/qrcode/BC_QRDecodedBitStreamParser.cpp b/xfa/src/fxbarcode/qrcode/BC_QRDecodedBitStreamParser.cpp new file mode 100644 index 0000000000..3aba699bce --- /dev/null +++ b/xfa/src/fxbarcode/qrcode/BC_QRDecodedBitStreamParser.cpp @@ -0,0 +1,272 @@ +// 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 2007 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 "xfa/src/fxbarcode/barcode.h" +#include "xfa/src/fxbarcode/BC_UtilCodingConvert.h" +#include "xfa/src/fxbarcode/common/BC_CommonBitSource.h" +#include "xfa/src/fxbarcode/common/BC_CommonECI.h" +#include "xfa/src/fxbarcode/common/BC_CommonCharacterSetECI.h" +#include "xfa/src/fxbarcode/common/BC_CommonDecoderResult.h" +#include "BC_QRCoderMode.h" +#include "BC_QRDecodedBitStreamParser.h" +const FX_CHAR* CBC_QRDecodedBitStreamParser::UTF_8 = "utf8"; +const FX_CHAR CBC_QRDecodedBitStreamParser::ALPHANUMERIC_CHARS[45] = { + '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', ' ', '$', '%', '*', '+', '-', '.', '/', ':'}; +CBC_QRDecodedBitStreamParser::CBC_QRDecodedBitStreamParser() {} +CBC_QRDecodedBitStreamParser::~CBC_QRDecodedBitStreamParser() {} +CBC_CommonDecoderResult* CBC_QRDecodedBitStreamParser::Decode( + CFX_ByteArray* bytes, + CBC_QRCoderVersion* version, + CBC_QRCoderErrorCorrectionLevel* ecLevel, + int32_t byteModeDecode, + int32_t& e) { + CBC_CommonBitSource bits(bytes); + CFX_ByteString result; + CBC_CommonCharacterSetECI* currentCharacterSetECI = NULL; + FX_BOOL fc1Infact = FALSE; + CFX_Int32Array byteSegments; + CBC_QRCoderMode* mode = NULL; + do { + if (bits.Available() < 4) { + mode = CBC_QRCoderMode::sTERMINATOR; + } else { + int32_t iTemp1 = bits.ReadBits(4, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + mode = CBC_QRCoderMode::ForBits(iTemp1, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + if (mode == NULL) { + e = BCExceptionUnSupportMode; + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + } + if (!(mode == CBC_QRCoderMode::sTERMINATOR)) { + if (mode == CBC_QRCoderMode::sFNC1_FIRST_POSITION || + mode == CBC_QRCoderMode::sFNC1_SECOND_POSITION) { + fc1Infact = TRUE; + } else if (mode == CBC_QRCoderMode::sSTRUCTURED_APPEND) { + bits.ReadBits(16, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } else if (mode == CBC_QRCoderMode::sECI) { + int32_t value = ParseECIValue(&bits, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + currentCharacterSetECI = + CBC_CommonCharacterSetECI::GetCharacterSetECIByValue(value); + } else { + if (mode == CBC_QRCoderMode::sGBK) { + bits.ReadBits(4, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + int32_t numBits = mode->GetCharacterCountBits(version, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + int32_t count = bits.ReadBits(numBits, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + if (mode == CBC_QRCoderMode::sNUMERIC) { + DecodeNumericSegment(&bits, result, count, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } else if (mode == CBC_QRCoderMode::sALPHANUMERIC) { + DecodeAlphanumericSegment(&bits, result, count, fc1Infact, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } else if (mode == CBC_QRCoderMode::sBYTE) { + DecodeByteSegment(&bits, result, count, currentCharacterSetECI, + &byteSegments, byteModeDecode, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } else if (mode == CBC_QRCoderMode::sGBK) { + DecodeGBKSegment(&bits, result, count, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } else if (mode == CBC_QRCoderMode::sKANJI) { + DecodeKanjiSegment(&bits, result, count, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } else { + e = BCExceptionUnSupportMode; + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + } + } + } + } while (!(mode == CBC_QRCoderMode::sTERMINATOR)); + CBC_CommonDecoderResult* tempCd = new CBC_CommonDecoderResult(); + tempCd->Init(*bytes, result, byteSegments, ecLevel, e); + BC_EXCEPTION_CHECK_ReturnValue(e, NULL); + return tempCd; +} +void CBC_QRDecodedBitStreamParser::DecodeGBKSegment(CBC_CommonBitSource* bits, + CFX_ByteString& result, + int32_t count, + int32_t& e) { + CFX_ByteString buffer; + while (count > 0) { + int32_t twoBytes = bits->ReadBits(13, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + int32_t assembledTwoBytes = ((twoBytes / 0x060) << 8) | (twoBytes % 0x060); + if (assembledTwoBytes <= 0x0095d) { + assembledTwoBytes += 0x0a1a1; + } else { + assembledTwoBytes += 0x0a6a1; + } + buffer += (uint8_t)(assembledTwoBytes >> 8); + buffer += (uint8_t)assembledTwoBytes; + count--; + } + CBC_UtilCodingConvert::LocaleToUtf8(buffer, result); +} +void CBC_QRDecodedBitStreamParser::DecodeKanjiSegment(CBC_CommonBitSource* bits, + CFX_ByteString& result, + int32_t count, + int32_t& e) { + CFX_ByteString buffer; + while (count > 0) { + int32_t twoBytes = bits->ReadBits(13, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + int32_t assembledTwoBytes = ((twoBytes / 0x0c0) << 8) | (twoBytes % 0x0c0); + if (assembledTwoBytes <= 0x01f00) { + assembledTwoBytes += 0x08140; + } else { + assembledTwoBytes += 0x0c140; + } + buffer += (uint8_t)(assembledTwoBytes >> 8); + buffer += (uint8_t)assembledTwoBytes; + count--; + } + CBC_UtilCodingConvert::LocaleToUtf8(buffer, result); +} +void CBC_QRDecodedBitStreamParser::DecodeByteSegment( + CBC_CommonBitSource* bits, + CFX_ByteString& result, + int32_t count, + CBC_CommonCharacterSetECI* currentCharacterSetECI, + CFX_Int32Array* byteSegments, + int32_t byteModeDecode, + int32_t& e) { + if (count < 0) { + e = BCExceptionNotFound; + BC_EXCEPTION_CHECK_ReturnVoid(e); + } + if ((count << 3) > bits->Available()) { + e = BCExceptionRead; + BC_EXCEPTION_CHECK_ReturnVoid(e); + } + uint8_t* readBytes = FX_Alloc(uint8_t, count); + FXSYS_memset(readBytes, 0x00, count); + for (int32_t i = 0; i < count; i++) { + readBytes[i] = (uint8_t)bits->ReadBits(8, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + } + CFX_ByteString bs(readBytes, count); + result += bs; + FX_Free(readBytes); +} +void CBC_QRDecodedBitStreamParser::DecodeAlphanumericSegment( + CBC_CommonBitSource* bits, + CFX_ByteString& result, + int32_t count, + FX_BOOL fac1InEffect, + int32_t& e) { + int32_t start = result.GetLength(); + while (count > 1) { + int32_t nextTwoCharsBits = bits->ReadBits(11, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + BC_FX_ByteString_Append(result, 1, + ALPHANUMERIC_CHARS[nextTwoCharsBits / 45]); + BC_FX_ByteString_Append(result, 1, + ALPHANUMERIC_CHARS[nextTwoCharsBits % 45]); + count -= 2; + } + if (count == 1) { + int32_t itemp = bits->ReadBits(6, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[itemp]); + } + if (fac1InEffect) { + for (int32_t i = start; i < result.GetLength(); i++) { + if (result[i] == '%') { + if ((i < result.GetLength() - 1) && result[i + 1] == '%') { + result.Delete(i + 1, 1); + } else { + result.SetAt(i, (FX_CHAR)0x1d); + } + } + } + } +} +void CBC_QRDecodedBitStreamParser::DecodeNumericSegment( + CBC_CommonBitSource* bits, + CFX_ByteString& result, + int32_t count, + int32_t& e) { + while (count >= 3) { + int32_t threeDigitsBits = bits->ReadBits(10, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + if (threeDigitsBits >= 1000) { + e = BCExceptionRead; + BC_EXCEPTION_CHECK_ReturnVoid(e); + } + BC_FX_ByteString_Append(result, 1, + ALPHANUMERIC_CHARS[threeDigitsBits / 100]); + BC_FX_ByteString_Append(result, 1, + ALPHANUMERIC_CHARS[(threeDigitsBits / 10) % 10]); + BC_FX_ByteString_Append(result, 1, + ALPHANUMERIC_CHARS[threeDigitsBits % 10]); + count -= 3; + } + if (count == 2) { + int32_t twoDigitBits = bits->ReadBits(7, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + if (twoDigitBits >= 100) { + e = BCExceptionRead; + BC_EXCEPTION_CHECK_ReturnVoid(e); + } + BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[twoDigitBits / 10]); + BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[twoDigitBits % 10]); + } else if (count == 1) { + int32_t digitBits = bits->ReadBits(4, e); + BC_EXCEPTION_CHECK_ReturnVoid(e); + if (digitBits >= 10) { + e = BCExceptionRead; + BC_EXCEPTION_CHECK_ReturnVoid(e); + } + BC_FX_ByteString_Append(result, 1, ALPHANUMERIC_CHARS[digitBits]); + } +} +const CFX_ByteString CBC_QRDecodedBitStreamParser::GuessEncoding( + CFX_ByteArray* bytes) { + return *UTF_8; +} +int32_t CBC_QRDecodedBitStreamParser::ParseECIValue(CBC_CommonBitSource* bits, + int32_t& e) { + int32_t firstByte = bits->ReadBits(8, e); + BC_EXCEPTION_CHECK_ReturnValue(e, 0); + if ((firstByte & 0x80) == 0) { + return firstByte & 0x7f; + } else if ((firstByte & 0xc0) == 0x80) { + int32_t secondByte = bits->ReadBits(8, e); + BC_EXCEPTION_CHECK_ReturnValue(e, 0); + return ((firstByte & 0x3f) << 8) | secondByte; + } else if ((firstByte & 0xe0) == 0xc0) { + int32_t secondThirdByte = bits->ReadBits(16, e); + BC_EXCEPTION_CHECK_ReturnValue(e, 0); + return ((firstByte & 0x1f) << 16) | secondThirdByte; + } + e = BCExceptionBadECI; + BC_EXCEPTION_CHECK_ReturnValue(e, 0); + return 0; +} |