diff options
Diffstat (limited to 'fxbarcode/datamatrix/BC_HighLevelEncoder.cpp')
| -rw-r--r-- | fxbarcode/datamatrix/BC_HighLevelEncoder.cpp | 360 |
1 files changed, 360 insertions, 0 deletions
diff --git a/fxbarcode/datamatrix/BC_HighLevelEncoder.cpp b/fxbarcode/datamatrix/BC_HighLevelEncoder.cpp new file mode 100644 index 0000000000..e2d483cbdf --- /dev/null +++ b/fxbarcode/datamatrix/BC_HighLevelEncoder.cpp @@ -0,0 +1,360 @@ +// 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 2006-2007 Jeremias Maerki. + * + * 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 <limits> +#include <memory> +#include <vector> + +#include "fxbarcode/BC_Dimension.h" +#include "fxbarcode/BC_UtilCodingConvert.h" +#include "fxbarcode/common/BC_CommonBitMatrix.h" +#include "fxbarcode/datamatrix/BC_ASCIIEncoder.h" +#include "fxbarcode/datamatrix/BC_Base256Encoder.h" +#include "fxbarcode/datamatrix/BC_C40Encoder.h" +#include "fxbarcode/datamatrix/BC_EdifactEncoder.h" +#include "fxbarcode/datamatrix/BC_Encoder.h" +#include "fxbarcode/datamatrix/BC_EncoderContext.h" +#include "fxbarcode/datamatrix/BC_HighLevelEncoder.h" +#include "fxbarcode/datamatrix/BC_SymbolInfo.h" +#include "fxbarcode/datamatrix/BC_SymbolShapeHint.h" +#include "fxbarcode/datamatrix/BC_TextEncoder.h" +#include "fxbarcode/datamatrix/BC_X12Encoder.h" +#include "fxbarcode/utils.h" + +wchar_t CBC_HighLevelEncoder::LATCH_TO_C40 = 230; +wchar_t CBC_HighLevelEncoder::LATCH_TO_BASE256 = 231; +wchar_t CBC_HighLevelEncoder::UPPER_SHIFT = 235; +wchar_t CBC_HighLevelEncoder::LATCH_TO_ANSIX12 = 238; +wchar_t CBC_HighLevelEncoder::LATCH_TO_TEXT = 239; +wchar_t CBC_HighLevelEncoder::LATCH_TO_EDIFACT = 240; +wchar_t CBC_HighLevelEncoder::C40_UNLATCH = 254; +wchar_t CBC_HighLevelEncoder::X12_UNLATCH = 254; +wchar_t CBC_HighLevelEncoder::PAD = 129; +wchar_t CBC_HighLevelEncoder::MACRO_05 = 236; +wchar_t CBC_HighLevelEncoder::MACRO_06 = 237; +const wchar_t* CBC_HighLevelEncoder::MACRO_05_HEADER = L"[)> 05"; +const wchar_t* CBC_HighLevelEncoder::MACRO_06_HEADER = L"[)> 06"; +const wchar_t CBC_HighLevelEncoder::MACRO_TRAILER = 0x0004; + +CBC_HighLevelEncoder::CBC_HighLevelEncoder() {} +CBC_HighLevelEncoder::~CBC_HighLevelEncoder() {} + +std::vector<uint8_t>& CBC_HighLevelEncoder::getBytesForMessage( + CFX_WideString msg) { + CFX_ByteString bytestr; + CBC_UtilCodingConvert::UnicodeToUTF8(msg, bytestr); + for (int32_t i = 0; i < bytestr.GetLength(); i++) + m_bytearray.push_back(bytestr.GetAt(i)); + return m_bytearray; +} +CFX_WideString CBC_HighLevelEncoder::encodeHighLevel(CFX_WideString msg, + CFX_WideString ecLevel, + int32_t& e) { + return encodeHighLevel(msg, ecLevel, FORCE_NONE, nullptr, nullptr, e); +} +CFX_WideString CBC_HighLevelEncoder::encodeHighLevel(CFX_WideString msg, + CFX_WideString ecLevel, + SymbolShapeHint shape, + CBC_Dimension* minSize, + CBC_Dimension* maxSize, + int32_t& e) { + CBC_EncoderContext context(msg, ecLevel, e); + if (e != BCExceptionNO) + return CFX_WideString(); + context.setSymbolShape(shape); + context.setSizeConstraints(minSize, maxSize); + if ((msg.Mid(0, 6) == MACRO_05_HEADER) && + (msg.Mid(msg.GetLength() - 1, 1) == MACRO_TRAILER)) { + context.writeCodeword(MACRO_05); + context.setSkipAtEnd(2); + context.m_pos += 6; + } else if ((msg.Mid(0, 6) == MACRO_06_HEADER) && + (msg.Mid(msg.GetLength() - 1, 1) == MACRO_TRAILER)) { + context.writeCodeword(MACRO_06); + context.setSkipAtEnd(2); + context.m_pos += 6; + } + + std::vector<std::unique_ptr<CBC_Encoder>> encoders; + encoders.push_back(std::unique_ptr<CBC_Encoder>(new CBC_ASCIIEncoder())); + encoders.push_back(std::unique_ptr<CBC_Encoder>(new CBC_C40Encoder())); + encoders.push_back(std::unique_ptr<CBC_Encoder>(new CBC_TextEncoder())); + encoders.push_back(std::unique_ptr<CBC_Encoder>(new CBC_X12Encoder())); + encoders.push_back(std::unique_ptr<CBC_Encoder>(new CBC_EdifactEncoder())); + encoders.push_back(std::unique_ptr<CBC_Encoder>(new CBC_Base256Encoder())); + int32_t encodingMode = ASCII_ENCODATION; + while (context.hasMoreCharacters()) { + encoders[encodingMode]->Encode(context, e); + if (e != BCExceptionNO) + return L""; + + if (context.m_newEncoding >= 0) { + encodingMode = context.m_newEncoding; + context.resetEncoderSignal(); + } + } + int32_t len = context.m_codewords.GetLength(); + context.updateSymbolInfo(e); + if (e != BCExceptionNO) + return L""; + + int32_t capacity = context.m_symbolInfo->m_dataCapacity; + if (len < capacity) { + if (encodingMode != ASCII_ENCODATION && + encodingMode != BASE256_ENCODATION) { + context.writeCodeword(0x00fe); + } + } + CFX_WideString codewords = context.m_codewords; + if (codewords.GetLength() < capacity) { + codewords += PAD; + } + while (codewords.GetLength() < capacity) { + codewords += (randomize253State(PAD, codewords.GetLength() + 1)); + } + return codewords; +} +int32_t CBC_HighLevelEncoder::lookAheadTest(CFX_WideString msg, + int32_t startpos, + int32_t currentMode) { + if (startpos >= msg.GetLength()) { + return currentMode; + } + std::vector<float> charCounts; + if (currentMode == ASCII_ENCODATION) { + charCounts.push_back(0); + charCounts.push_back(1); + charCounts.push_back(1); + charCounts.push_back(1); + charCounts.push_back(1); + charCounts.push_back(1.25f); + } else { + charCounts.push_back(1); + charCounts.push_back(2); + charCounts.push_back(2); + charCounts.push_back(2); + charCounts.push_back(2); + charCounts.push_back(2.25f); + charCounts[currentMode] = 0; + } + int32_t charsProcessed = 0; + while (true) { + if ((startpos + charsProcessed) == msg.GetLength()) { + int32_t min = std::numeric_limits<int32_t>::max(); + std::vector<uint8_t> mins(6); + std::vector<int32_t> intCharCounts(6); + min = findMinimums(charCounts, intCharCounts, min, mins); + int32_t minCount = getMinimumCount(mins); + if (intCharCounts[ASCII_ENCODATION] == min) { + return ASCII_ENCODATION; + } + if (minCount == 1 && mins[BASE256_ENCODATION] > 0) { + return BASE256_ENCODATION; + } + if (minCount == 1 && mins[EDIFACT_ENCODATION] > 0) { + return EDIFACT_ENCODATION; + } + if (minCount == 1 && mins[TEXT_ENCODATION] > 0) { + return TEXT_ENCODATION; + } + if (minCount == 1 && mins[X12_ENCODATION] > 0) { + return X12_ENCODATION; + } + return C40_ENCODATION; + } + wchar_t c = msg.GetAt(startpos + charsProcessed); + charsProcessed++; + if (isDigit(c)) { + charCounts[ASCII_ENCODATION] += 0.5; + } else if (isExtendedASCII(c)) { + charCounts[ASCII_ENCODATION] = (float)ceil(charCounts[ASCII_ENCODATION]); + charCounts[ASCII_ENCODATION] += 2; + } else { + charCounts[ASCII_ENCODATION] = (float)ceil(charCounts[ASCII_ENCODATION]); + charCounts[ASCII_ENCODATION]++; + } + if (isNativeC40(c)) { + charCounts[C40_ENCODATION] += 2.0f / 3.0f; + } else if (isExtendedASCII(c)) { + charCounts[C40_ENCODATION] += 8.0f / 3.0f; + } else { + charCounts[C40_ENCODATION] += 4.0f / 3.0f; + } + if (isNativeText(c)) { + charCounts[TEXT_ENCODATION] += 2.0f / 3.0f; + } else if (isExtendedASCII(c)) { + charCounts[TEXT_ENCODATION] += 8.0f / 3.0f; + } else { + charCounts[TEXT_ENCODATION] += 4.0f / 3.0f; + } + if (isNativeX12(c)) { + charCounts[X12_ENCODATION] += 2.0f / 3.0f; + } else if (isExtendedASCII(c)) { + charCounts[X12_ENCODATION] += 13.0f / 3.0f; + } else { + charCounts[X12_ENCODATION] += 10.0f / 3.0f; + } + if (isNativeEDIFACT(c)) { + charCounts[EDIFACT_ENCODATION] += 3.0f / 4.0f; + } else if (isExtendedASCII(c)) { + charCounts[EDIFACT_ENCODATION] += 17.0f / 4.0f; + } else { + charCounts[EDIFACT_ENCODATION] += 13.0f / 4.0f; + } + if (isSpecialB256(c)) { + charCounts[BASE256_ENCODATION] += 4; + } else { + charCounts[BASE256_ENCODATION]++; + } + if (charsProcessed >= 4) { + std::vector<int32_t> intCharCounts(6); + std::vector<uint8_t> mins(6); + findMinimums(charCounts, intCharCounts, + std::numeric_limits<int32_t>::max(), mins); + int32_t minCount = getMinimumCount(mins); + if (intCharCounts[ASCII_ENCODATION] < intCharCounts[BASE256_ENCODATION] && + intCharCounts[ASCII_ENCODATION] < intCharCounts[C40_ENCODATION] && + intCharCounts[ASCII_ENCODATION] < intCharCounts[TEXT_ENCODATION] && + intCharCounts[ASCII_ENCODATION] < intCharCounts[X12_ENCODATION] && + intCharCounts[ASCII_ENCODATION] < intCharCounts[EDIFACT_ENCODATION]) { + return ASCII_ENCODATION; + } + if (intCharCounts[BASE256_ENCODATION] < intCharCounts[ASCII_ENCODATION] || + (mins[C40_ENCODATION] + mins[TEXT_ENCODATION] + mins[X12_ENCODATION] + + mins[EDIFACT_ENCODATION]) == 0) { + return BASE256_ENCODATION; + } + if (minCount == 1 && mins[EDIFACT_ENCODATION] > 0) { + return EDIFACT_ENCODATION; + } + if (minCount == 1 && mins[TEXT_ENCODATION] > 0) { + return TEXT_ENCODATION; + } + if (minCount == 1 && mins[X12_ENCODATION] > 0) { + return X12_ENCODATION; + } + if (intCharCounts[C40_ENCODATION] + 1 < intCharCounts[ASCII_ENCODATION] && + intCharCounts[C40_ENCODATION] + 1 < + intCharCounts[BASE256_ENCODATION] && + intCharCounts[C40_ENCODATION] + 1 < + intCharCounts[EDIFACT_ENCODATION] && + intCharCounts[C40_ENCODATION] + 1 < intCharCounts[TEXT_ENCODATION]) { + if (intCharCounts[C40_ENCODATION] < intCharCounts[X12_ENCODATION]) { + return C40_ENCODATION; + } + if (intCharCounts[C40_ENCODATION] == intCharCounts[X12_ENCODATION]) { + int32_t p = startpos + charsProcessed + 1; + while (p < msg.GetLength()) { + wchar_t tc = msg.GetAt(p); + if (isX12TermSep(tc)) { + return X12_ENCODATION; + } + if (!isNativeX12(tc)) { + break; + } + p++; + } + return C40_ENCODATION; + } + } + } + } +} +bool CBC_HighLevelEncoder::isDigit(wchar_t ch) { + return ch >= '0' && ch <= '9'; +} +bool CBC_HighLevelEncoder::isExtendedASCII(wchar_t ch) { + return ch >= 128 && ch <= 255; +} +int32_t CBC_HighLevelEncoder::determineConsecutiveDigitCount(CFX_WideString msg, + int32_t startpos) { + int32_t count = 0; + int32_t len = msg.GetLength(); + int32_t idx = startpos; + if (idx < len) { + wchar_t ch = msg.GetAt(idx); + while (isDigit(ch) && idx < len) { + count++; + idx++; + if (idx < len) { + ch = msg.GetAt(idx); + } + } + } + return count; +} +void CBC_HighLevelEncoder::illegalCharacter(wchar_t c, int32_t& e) { + e = BCExceptionIllegalArgument; +} +wchar_t CBC_HighLevelEncoder::randomize253State(wchar_t ch, + int32_t codewordPosition) { + int32_t pseudoRandom = ((149 * codewordPosition) % 253) + 1; + int32_t tempVariable = ch + pseudoRandom; + return tempVariable <= 254 ? (wchar_t)tempVariable + : (wchar_t)(tempVariable - 254); +} +int32_t CBC_HighLevelEncoder::findMinimums(std::vector<float>& charCounts, + std::vector<int32_t>& intCharCounts, + int32_t min, + std::vector<uint8_t>& mins) { + for (size_t l = 0; l < mins.size(); l++) + mins[l] = 0; + + for (size_t i = 0; i < 6; i++) { + intCharCounts[i] = static_cast<int32_t>(ceil(charCounts[i])); + int32_t current = intCharCounts[i]; + if (min > current) { + min = current; + for (size_t j = 0; j < mins.size(); j++) + mins[j] = 0; + } + if (min == current) + mins[i]++; + } + return min; +} +int32_t CBC_HighLevelEncoder::getMinimumCount(std::vector<uint8_t>& mins) { + int32_t minCount = 0; + for (int32_t i = 0; i < 6; i++) { + minCount += mins[i]; + } + return minCount; +} +bool CBC_HighLevelEncoder::isNativeC40(wchar_t ch) { + return (ch == ' ') || (ch >= '0' && ch <= '9') || (ch >= 'A' && ch <= 'Z'); +} +bool CBC_HighLevelEncoder::isNativeText(wchar_t ch) { + return (ch == ' ') || (ch >= '0' && ch <= '9') || (ch >= 'a' && ch <= 'z'); +} +bool CBC_HighLevelEncoder::isNativeX12(wchar_t ch) { + return isX12TermSep(ch) || (ch == ' ') || (ch >= '0' && ch <= '9') || + (ch >= 'A' && ch <= 'Z'); +} +bool CBC_HighLevelEncoder::isX12TermSep(wchar_t ch) { + return (ch == '\r') || (ch == '*') || (ch == '>'); +} +bool CBC_HighLevelEncoder::isNativeEDIFACT(wchar_t ch) { + return ch >= ' ' && ch <= '^'; +} +bool CBC_HighLevelEncoder::isSpecialB256(wchar_t ch) { + return false; +} |