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// Copyright 2014 PDFium Authors. All rights reserved. |
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// Use of this source code is governed by a BSD-style license that can be |
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// found in the LICENSE file. |
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
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// Original code is licensed as follows: |
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/* |
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* Copyright 2006-2007 Jeremias Maerki. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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#include <limits> |
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#include <memory> |
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#include <vector> |
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#include "xfa/fxbarcode/BC_Dimension.h" |
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#include "xfa/fxbarcode/BC_UtilCodingConvert.h" |
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#include "xfa/fxbarcode/common/BC_CommonBitMatrix.h" |
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#include "xfa/fxbarcode/datamatrix/BC_ASCIIEncoder.h" |
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#include "xfa/fxbarcode/datamatrix/BC_Base256Encoder.h" |
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#include "xfa/fxbarcode/datamatrix/BC_C40Encoder.h" |
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#include "xfa/fxbarcode/datamatrix/BC_EdifactEncoder.h" |
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#include "xfa/fxbarcode/datamatrix/BC_Encoder.h" |
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#include "xfa/fxbarcode/datamatrix/BC_EncoderContext.h" |
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#include "xfa/fxbarcode/datamatrix/BC_HighLevelEncoder.h" |
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#include "xfa/fxbarcode/datamatrix/BC_SymbolInfo.h" |
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#include "xfa/fxbarcode/datamatrix/BC_SymbolShapeHint.h" |
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#include "xfa/fxbarcode/datamatrix/BC_TextEncoder.h" |
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#include "xfa/fxbarcode/datamatrix/BC_X12Encoder.h" |
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#include "xfa/fxbarcode/utils.h" |
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FX_WCHAR CBC_HighLevelEncoder::LATCH_TO_C40 = 230; |
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FX_WCHAR CBC_HighLevelEncoder::LATCH_TO_BASE256 = 231; |
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FX_WCHAR CBC_HighLevelEncoder::UPPER_SHIFT = 235; |
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FX_WCHAR CBC_HighLevelEncoder::LATCH_TO_ANSIX12 = 238; |
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FX_WCHAR CBC_HighLevelEncoder::LATCH_TO_TEXT = 239; |
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FX_WCHAR CBC_HighLevelEncoder::LATCH_TO_EDIFACT = 240; |
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FX_WCHAR CBC_HighLevelEncoder::C40_UNLATCH = 254; |
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FX_WCHAR CBC_HighLevelEncoder::X12_UNLATCH = 254; |
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FX_WCHAR CBC_HighLevelEncoder::PAD = 129; |
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FX_WCHAR CBC_HighLevelEncoder::MACRO_05 = 236; |
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FX_WCHAR CBC_HighLevelEncoder::MACRO_06 = 237; |
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const wchar_t* CBC_HighLevelEncoder::MACRO_05_HEADER = L"[)> 05"; |
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const wchar_t* CBC_HighLevelEncoder::MACRO_06_HEADER = L"[)> 06"; |
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const wchar_t CBC_HighLevelEncoder::MACRO_TRAILER = 0x0004; |
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CBC_HighLevelEncoder::CBC_HighLevelEncoder() {} |
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CBC_HighLevelEncoder::~CBC_HighLevelEncoder() {} |
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CFX_ArrayTemplate<uint8_t>& CBC_HighLevelEncoder::getBytesForMessage( |
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CFX_WideString msg) { |
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CFX_ByteString bytestr; |
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CBC_UtilCodingConvert::UnicodeToUTF8(msg, bytestr); |
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for (int32_t i = 0; i < bytestr.GetLength(); i++) { |
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m_bytearray.Add(bytestr.GetAt(i)); |
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} |
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return m_bytearray; |
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} |
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CFX_WideString CBC_HighLevelEncoder::encodeHighLevel(CFX_WideString msg, |
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CFX_WideString ecLevel, |
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int32_t& e) { |
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return encodeHighLevel(msg, ecLevel, FORCE_NONE, nullptr, nullptr, e); |
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} |
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CFX_WideString CBC_HighLevelEncoder::encodeHighLevel(CFX_WideString msg, |
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CFX_WideString ecLevel, |
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SymbolShapeHint shape, |
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CBC_Dimension* minSize, |
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CBC_Dimension* maxSize, |
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int32_t& e) { |
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CBC_EncoderContext context(msg, ecLevel, e); |
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if (e != BCExceptionNO) |
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return CFX_WideString(); |
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context.setSymbolShape(shape); |
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context.setSizeConstraints(minSize, maxSize); |
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if ((msg.Mid(0, 6) == MACRO_05_HEADER) && |
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(msg.Mid(msg.GetLength() - 1, 1) == MACRO_TRAILER)) { |
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context.writeCodeword(MACRO_05); |
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context.setSkipAtEnd(2); |
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context.m_pos += 6; |
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} else if ((msg.Mid(0, 6) == MACRO_06_HEADER) && |
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(msg.Mid(msg.GetLength() - 1, 1) == MACRO_TRAILER)) { |
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context.writeCodeword(MACRO_06); |
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context.setSkipAtEnd(2); |
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context.m_pos += 6; |
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} |
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std::vector<std::unique_ptr<CBC_Encoder>> encoders; |
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encoders.push_back(std::unique_ptr<CBC_Encoder>(new CBC_ASCIIEncoder())); |
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encoders.push_back(std::unique_ptr<CBC_Encoder>(new CBC_C40Encoder())); |
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encoders.push_back(std::unique_ptr<CBC_Encoder>(new CBC_TextEncoder())); |
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encoders.push_back(std::unique_ptr<CBC_Encoder>(new CBC_X12Encoder())); |
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encoders.push_back(std::unique_ptr<CBC_Encoder>(new CBC_EdifactEncoder())); |
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encoders.push_back(std::unique_ptr<CBC_Encoder>(new CBC_Base256Encoder())); |
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int32_t encodingMode = ASCII_ENCODATION; |
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while (context.hasMoreCharacters()) { |
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encoders[encodingMode]->Encode(context, e); |
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if (e != BCExceptionNO) |
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return L""; |
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if (context.m_newEncoding >= 0) { |
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encodingMode = context.m_newEncoding; |
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context.resetEncoderSignal(); |
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} |
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} |
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int32_t len = context.m_codewords.GetLength(); |
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context.updateSymbolInfo(e); |
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if (e != BCExceptionNO) |
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return L""; |
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int32_t capacity = context.m_symbolInfo->m_dataCapacity; |
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if (len < capacity) { |
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if (encodingMode != ASCII_ENCODATION && |
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encodingMode != BASE256_ENCODATION) { |
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context.writeCodeword(0x00fe); |
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} |
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} |
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CFX_WideString codewords = context.m_codewords; |
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if (codewords.GetLength() < capacity) { |
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codewords += PAD; |
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} |
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while (codewords.GetLength() < capacity) { |
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codewords += (randomize253State(PAD, codewords.GetLength() + 1)); |
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} |
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return codewords; |
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} |
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int32_t CBC_HighLevelEncoder::lookAheadTest(CFX_WideString msg, |
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int32_t startpos, |
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int32_t currentMode) { |
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if (startpos >= msg.GetLength()) { |
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return currentMode; |
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} |
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std::vector<FX_FLOAT> charCounts; |
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if (currentMode == ASCII_ENCODATION) { |
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charCounts.push_back(0); |
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charCounts.push_back(1); |
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charCounts.push_back(1); |
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charCounts.push_back(1); |
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charCounts.push_back(1); |
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charCounts.push_back(1.25f); |
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} else { |
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charCounts.push_back(1); |
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charCounts.push_back(2); |
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charCounts.push_back(2); |
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charCounts.push_back(2); |
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charCounts.push_back(2); |
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charCounts.push_back(2.25f); |
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charCounts[currentMode] = 0; |
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} |
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int32_t charsProcessed = 0; |
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while (true) { |
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if ((startpos + charsProcessed) == msg.GetLength()) { |
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int32_t min = std::numeric_limits<int32_t>::max(); |
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CFX_ArrayTemplate<uint8_t> mins; |
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mins.SetSize(6); |
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CFX_ArrayTemplate<int32_t> intCharCounts; |
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intCharCounts.SetSize(6); |
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min = findMinimums(charCounts, intCharCounts, min, mins); |
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int32_t minCount = getMinimumCount(mins); |
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if (intCharCounts[ASCII_ENCODATION] == min) { |
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return ASCII_ENCODATION; |
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} |
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if (minCount == 1 && mins[BASE256_ENCODATION] > 0) { |
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return BASE256_ENCODATION; |
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} |
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if (minCount == 1 && mins[EDIFACT_ENCODATION] > 0) { |
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return EDIFACT_ENCODATION; |
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} |
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if (minCount == 1 && mins[TEXT_ENCODATION] > 0) { |
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return TEXT_ENCODATION; |
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} |
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if (minCount == 1 && mins[X12_ENCODATION] > 0) { |
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return X12_ENCODATION; |
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} |
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return C40_ENCODATION; |
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} |
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FX_WCHAR c = msg.GetAt(startpos + charsProcessed); |
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charsProcessed++; |
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if (isDigit(c)) { |
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charCounts[ASCII_ENCODATION] += 0.5; |
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} else if (isExtendedASCII(c)) { |
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charCounts[ASCII_ENCODATION] = |
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(FX_FLOAT)ceil(charCounts[ASCII_ENCODATION]); |
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charCounts[ASCII_ENCODATION] += 2; |
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} else { |
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charCounts[ASCII_ENCODATION] = |
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(FX_FLOAT)ceil(charCounts[ASCII_ENCODATION]); |
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charCounts[ASCII_ENCODATION]++; |
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} |
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if (isNativeC40(c)) { |
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charCounts[C40_ENCODATION] += 2.0f / 3.0f; |
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} else if (isExtendedASCII(c)) { |
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charCounts[C40_ENCODATION] += 8.0f / 3.0f; |
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} else { |
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charCounts[C40_ENCODATION] += 4.0f / 3.0f; |
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} |
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if (isNativeText(c)) { |
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charCounts[TEXT_ENCODATION] += 2.0f / 3.0f; |
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} else if (isExtendedASCII(c)) { |
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charCounts[TEXT_ENCODATION] += 8.0f / 3.0f; |
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} else { |
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charCounts[TEXT_ENCODATION] += 4.0f / 3.0f; |
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} |
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if (isNativeX12(c)) { |
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charCounts[X12_ENCODATION] += 2.0f / 3.0f; |
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} else if (isExtendedASCII(c)) { |
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charCounts[X12_ENCODATION] += 13.0f / 3.0f; |
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} else { |
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charCounts[X12_ENCODATION] += 10.0f / 3.0f; |
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} |
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if (isNativeEDIFACT(c)) { |
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charCounts[EDIFACT_ENCODATION] += 3.0f / 4.0f; |
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} else if (isExtendedASCII(c)) { |
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charCounts[EDIFACT_ENCODATION] += 17.0f / 4.0f; |
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} else { |
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charCounts[EDIFACT_ENCODATION] += 13.0f / 4.0f; |
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} |
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if (isSpecialB256(c)) { |
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charCounts[BASE256_ENCODATION] += 4; |
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} else { |
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charCounts[BASE256_ENCODATION]++; |
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} |
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if (charsProcessed >= 4) { |
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CFX_ArrayTemplate<int32_t> intCharCounts; |
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intCharCounts.SetSize(6); |
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CFX_ArrayTemplate<uint8_t> mins; |
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mins.SetSize(6); |
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findMinimums(charCounts, intCharCounts, |
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std::numeric_limits<int32_t>::max(), mins); |
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int32_t minCount = getMinimumCount(mins); |
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if (intCharCounts[ASCII_ENCODATION] < intCharCounts[BASE256_ENCODATION] && |
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intCharCounts[ASCII_ENCODATION] < intCharCounts[C40_ENCODATION] && |
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intCharCounts[ASCII_ENCODATION] < intCharCounts[TEXT_ENCODATION] && |
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intCharCounts[ASCII_ENCODATION] < intCharCounts[X12_ENCODATION] && |
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intCharCounts[ASCII_ENCODATION] < intCharCounts[EDIFACT_ENCODATION]) { |
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return ASCII_ENCODATION; |
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} |
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if (intCharCounts[BASE256_ENCODATION] < intCharCounts[ASCII_ENCODATION] || |
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(mins[C40_ENCODATION] + mins[TEXT_ENCODATION] + mins[X12_ENCODATION] + |
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mins[EDIFACT_ENCODATION]) == 0) { |
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return BASE256_ENCODATION; |
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} |
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if (minCount == 1 && mins[EDIFACT_ENCODATION] > 0) { |
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return EDIFACT_ENCODATION; |
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} |
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if (minCount == 1 && mins[TEXT_ENCODATION] > 0) { |
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return TEXT_ENCODATION; |
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} |
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if (minCount == 1 && mins[X12_ENCODATION] > 0) { |
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return X12_ENCODATION; |
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} |
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if (intCharCounts[C40_ENCODATION] + 1 < intCharCounts[ASCII_ENCODATION] && |
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intCharCounts[C40_ENCODATION] + 1 < |
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intCharCounts[BASE256_ENCODATION] && |
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intCharCounts[C40_ENCODATION] + 1 < |
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intCharCounts[EDIFACT_ENCODATION] && |
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intCharCounts[C40_ENCODATION] + 1 < intCharCounts[TEXT_ENCODATION]) { |
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if (intCharCounts[C40_ENCODATION] < intCharCounts[X12_ENCODATION]) { |
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return C40_ENCODATION; |
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} |
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if (intCharCounts[C40_ENCODATION] == intCharCounts[X12_ENCODATION]) { |
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int32_t p = startpos + charsProcessed + 1; |
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while (p < msg.GetLength()) { |
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FX_WCHAR tc = msg.GetAt(p); |
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if (isX12TermSep(tc)) { |
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return X12_ENCODATION; |
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} |
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if (!isNativeX12(tc)) { |
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break; |
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} |
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p++; |
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} |
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return C40_ENCODATION; |
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} |
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} |
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} |
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} |
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} |
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bool CBC_HighLevelEncoder::isDigit(FX_WCHAR ch) { |
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return ch >= '0' && ch <= '9'; |
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} |
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bool CBC_HighLevelEncoder::isExtendedASCII(FX_WCHAR ch) { |
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return ch >= 128 && ch <= 255; |
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} |
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int32_t CBC_HighLevelEncoder::determineConsecutiveDigitCount(CFX_WideString msg, |
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int32_t startpos) { |
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int32_t count = 0; |
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int32_t len = msg.GetLength(); |
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int32_t idx = startpos; |
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if (idx < len) { |
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FX_WCHAR ch = msg.GetAt(idx); |
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while (isDigit(ch) && idx < len) { |
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count++; |
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idx++; |
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if (idx < len) { |
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ch = msg.GetAt(idx); |
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} |
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} |
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} |
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return count; |
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} |
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void CBC_HighLevelEncoder::illegalCharacter(FX_WCHAR c, int32_t& e) { |
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e = BCExceptionIllegalArgument; |
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} |
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FX_WCHAR CBC_HighLevelEncoder::randomize253State(FX_WCHAR ch, |
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int32_t codewordPosition) { |
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int32_t pseudoRandom = ((149 * codewordPosition) % 253) + 1; |
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int32_t tempVariable = ch + pseudoRandom; |
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return tempVariable <= 254 ? (FX_WCHAR)tempVariable |
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: (FX_WCHAR)(tempVariable - 254); |
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} |
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int32_t CBC_HighLevelEncoder::findMinimums( |
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std::vector<FX_FLOAT>& charCounts, |
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CFX_ArrayTemplate<int32_t>& intCharCounts, |
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int32_t min, |
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CFX_ArrayTemplate<uint8_t>& mins) { |
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for (int32_t l = 0; l < mins.GetSize(); l++) { |
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mins[l] = (uint8_t)0; |
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} |
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for (int32_t i = 0; i < 6; i++) { |
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intCharCounts[i] = (int32_t)ceil(charCounts[i]); |
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int32_t current = intCharCounts[i]; |
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if (min > current) { |
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min = current; |
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for (int32_t j = 0; j < mins.GetSize(); j++) { |
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mins[j] = (uint8_t)0; |
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} |
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} |
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if (min == current) { |
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mins[i]++; |
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} |
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} |
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return min; |
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} |
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int32_t CBC_HighLevelEncoder::getMinimumCount( |
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CFX_ArrayTemplate<uint8_t>& mins) { |
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int32_t minCount = 0; |
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for (int32_t i = 0; i < 6; i++) { |
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minCount += mins[i]; |
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} |
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return minCount; |
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} |
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bool CBC_HighLevelEncoder::isNativeC40(FX_WCHAR ch) { |
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return (ch == ' ') || (ch >= '0' && ch <= '9') || (ch >= 'A' && ch <= 'Z'); |
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} |
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bool CBC_HighLevelEncoder::isNativeText(FX_WCHAR ch) { |
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return (ch == ' ') || (ch >= '0' && ch <= '9') || (ch >= 'a' && ch <= 'z'); |
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} |
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bool CBC_HighLevelEncoder::isNativeX12(FX_WCHAR ch) { |
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return isX12TermSep(ch) || (ch == ' ') || (ch >= '0' && ch <= '9') || |
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(ch >= 'A' && ch <= 'Z'); |
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} |
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bool CBC_HighLevelEncoder::isX12TermSep(FX_WCHAR ch) { |
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return (ch == '\r') || (ch == '*') || (ch == '>'); |
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} |
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bool CBC_HighLevelEncoder::isNativeEDIFACT(FX_WCHAR ch) { |
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return ch >= ' ' && ch <= '^'; |
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} |
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bool CBC_HighLevelEncoder::isSpecialB256(FX_WCHAR ch) { |
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return false; |
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}
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