1 // Copyright 2014 The PDFium Authors 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 "core/fxcrt/fx_string.h" 28 #include "fxbarcode/common/BC_CommonBitMatrix.h" 29 #include "fxbarcode/datamatrix/BC_Encoder.h" 30 #include "fxbarcode/datamatrix/BC_SymbolInfo.h" 31 CBC_EncoderContext(const WideString & msg)32CBC_EncoderContext::CBC_EncoderContext(const WideString& msg) { 33 ByteString dststr = msg.ToUTF8(); 34 size_t c = dststr.GetLength(); 35 WideString sb; 36 sb.Reserve(c); 37 for (size_t i = 0; i < c; i++) { 38 wchar_t ch = static_cast<wchar_t>(dststr[i] & 0xff); 39 if (ch == '?' && dststr[i] != '?') { 40 m_bHasCharactersOutsideISO88591Encoding = true; 41 } 42 sb += ch; 43 } 44 m_msg = std::move(sb); 45 m_codewords.Reserve(m_msg.GetLength()); 46 } 47 48 CBC_EncoderContext::~CBC_EncoderContext() = default; 49 setSkipAtEnd(int32_t count)50void CBC_EncoderContext::setSkipAtEnd(int32_t count) { 51 m_skipAtEnd = count; 52 } getCurrentChar()53wchar_t CBC_EncoderContext::getCurrentChar() { 54 return m_msg[m_pos]; 55 } getCurrent()56wchar_t CBC_EncoderContext::getCurrent() { 57 return m_msg[m_pos]; 58 } 59 writeCodewords(const WideString & codewords)60void CBC_EncoderContext::writeCodewords(const WideString& codewords) { 61 m_codewords += codewords; 62 } 63 writeCodeword(wchar_t codeword)64void CBC_EncoderContext::writeCodeword(wchar_t codeword) { 65 m_codewords += codeword; 66 } 67 getCodewordCount()68size_t CBC_EncoderContext::getCodewordCount() { 69 return m_codewords.GetLength(); 70 } 71 SignalEncoderChange(CBC_HighLevelEncoder::Encoding encoding)72void CBC_EncoderContext::SignalEncoderChange( 73 CBC_HighLevelEncoder::Encoding encoding) { 74 m_newEncoding = encoding; 75 } 76 ResetEncoderSignal()77void CBC_EncoderContext::ResetEncoderSignal() { 78 m_newEncoding = CBC_HighLevelEncoder::Encoding::UNKNOWN; 79 } 80 hasMoreCharacters()81bool CBC_EncoderContext::hasMoreCharacters() { 82 return m_pos < getTotalMessageCharCount(); 83 } 84 getRemainingCharacters()85size_t CBC_EncoderContext::getRemainingCharacters() { 86 return getTotalMessageCharCount() - m_pos; 87 } 88 UpdateSymbolInfo()89bool CBC_EncoderContext::UpdateSymbolInfo() { 90 return UpdateSymbolInfo(getCodewordCount()); 91 } 92 UpdateSymbolInfo(size_t len)93bool CBC_EncoderContext::UpdateSymbolInfo(size_t len) { 94 if (!m_symbolInfo || len > m_symbolInfo->data_capacity()) { 95 m_symbolInfo = CBC_SymbolInfo::Lookup(len, m_bAllowRectangular); 96 if (!m_symbolInfo) 97 return false; 98 } 99 return true; 100 } 101 resetSymbolInfo()102void CBC_EncoderContext::resetSymbolInfo() { 103 m_bAllowRectangular = true; 104 } 105 getTotalMessageCharCount()106size_t CBC_EncoderContext::getTotalMessageCharCount() { 107 return m_msg.GetLength() - m_skipAtEnd; 108 } 109