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 2006-2007 Jeremias Maerki. 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/datamatrix/BC_EncoderContext.h" 24 25 #include <utility> 26 27 #include "fxbarcode/common/BC_CommonBitMatrix.h" 28 #include "fxbarcode/datamatrix/BC_Encoder.h" 29 #include "fxbarcode/datamatrix/BC_SymbolInfo.h" 30 CBC_EncoderContext(const WideString & msg)31CBC_EncoderContext::CBC_EncoderContext(const WideString& msg) { 32 ByteString dststr = msg.ToUTF8(); 33 size_t c = dststr.GetLength(); 34 WideString sb; 35 sb.Reserve(c); 36 for (size_t i = 0; i < c; i++) { 37 wchar_t ch = static_cast<wchar_t>(dststr[i] & 0xff); 38 if (ch == '?' && dststr[i] != '?') { 39 m_bHasCharactersOutsideISO88591Encoding = true; 40 } 41 sb += ch; 42 } 43 m_msg = std::move(sb); 44 m_codewords.Reserve(m_msg.GetLength()); 45 } 46 47 CBC_EncoderContext::~CBC_EncoderContext() = default; 48 setSkipAtEnd(int32_t count)49void CBC_EncoderContext::setSkipAtEnd(int32_t count) { 50 m_skipAtEnd = count; 51 } getCurrentChar()52wchar_t CBC_EncoderContext::getCurrentChar() { 53 return m_msg[m_pos]; 54 } getCurrent()55wchar_t CBC_EncoderContext::getCurrent() { 56 return m_msg[m_pos]; 57 } 58 writeCodewords(const WideString & codewords)59void CBC_EncoderContext::writeCodewords(const WideString& codewords) { 60 m_codewords += codewords; 61 } 62 writeCodeword(wchar_t codeword)63void CBC_EncoderContext::writeCodeword(wchar_t codeword) { 64 m_codewords += codeword; 65 } 66 getCodewordCount()67size_t CBC_EncoderContext::getCodewordCount() { 68 return m_codewords.GetLength(); 69 } 70 SignalEncoderChange(CBC_HighLevelEncoder::Encoding encoding)71void CBC_EncoderContext::SignalEncoderChange( 72 CBC_HighLevelEncoder::Encoding encoding) { 73 m_newEncoding = encoding; 74 } 75 ResetEncoderSignal()76void CBC_EncoderContext::ResetEncoderSignal() { 77 m_newEncoding = CBC_HighLevelEncoder::Encoding::UNKNOWN; 78 } 79 hasMoreCharacters()80bool CBC_EncoderContext::hasMoreCharacters() { 81 return m_pos < getTotalMessageCharCount(); 82 } 83 getRemainingCharacters()84size_t CBC_EncoderContext::getRemainingCharacters() { 85 return getTotalMessageCharCount() - m_pos; 86 } 87 UpdateSymbolInfo()88bool CBC_EncoderContext::UpdateSymbolInfo() { 89 return UpdateSymbolInfo(getCodewordCount()); 90 } 91 UpdateSymbolInfo(size_t len)92bool CBC_EncoderContext::UpdateSymbolInfo(size_t len) { 93 if (!m_symbolInfo || len > m_symbolInfo->dataCapacity()) { 94 m_symbolInfo = CBC_SymbolInfo::Lookup(len, m_bAllowRectangular); 95 if (!m_symbolInfo) 96 return false; 97 } 98 return true; 99 } 100 resetSymbolInfo()101void CBC_EncoderContext::resetSymbolInfo() { 102 m_bAllowRectangular = true; 103 } 104 getTotalMessageCharCount()105size_t CBC_EncoderContext::getTotalMessageCharCount() { 106 return m_msg.GetLength() - m_skipAtEnd; 107 } 108