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 "xfa/fxbarcode/BC_Dimension.h" 24 #include "xfa/fxbarcode/datamatrix/BC_ASCIIEncoder.h" 25 #include "xfa/fxbarcode/datamatrix/BC_Encoder.h" 26 #include "xfa/fxbarcode/datamatrix/BC_EncoderContext.h" 27 #include "xfa/fxbarcode/datamatrix/BC_HighLevelEncoder.h" 28 #include "xfa/fxbarcode/datamatrix/BC_SymbolInfo.h" 29 #include "xfa/fxbarcode/datamatrix/BC_SymbolShapeHint.h" 30 31 CBC_ASCIIEncoder::CBC_ASCIIEncoder() {} 32 CBC_ASCIIEncoder::~CBC_ASCIIEncoder() {} 33 int32_t CBC_ASCIIEncoder::getEncodingMode() { 34 return ASCII_ENCODATION; 35 } 36 void CBC_ASCIIEncoder::Encode(CBC_EncoderContext& context, int32_t& e) { 37 int32_t n = CBC_HighLevelEncoder::determineConsecutiveDigitCount( 38 context.m_msg, context.m_pos); 39 if (n >= 2) { 40 FX_WCHAR code = 41 encodeASCIIDigits(context.m_msg.GetAt(context.m_pos), 42 context.m_msg.GetAt(context.m_pos + 1), e); 43 if (e != BCExceptionNO) { 44 return; 45 } 46 context.writeCodeword(code); 47 context.m_pos += 2; 48 } else { 49 FX_WCHAR c = context.getCurrentChar(); 50 int32_t newMode = CBC_HighLevelEncoder::lookAheadTest( 51 context.m_msg, context.m_pos, getEncodingMode()); 52 if (newMode != getEncodingMode()) { 53 switch (newMode) { 54 case BASE256_ENCODATION: 55 context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_BASE256); 56 context.signalEncoderChange(BASE256_ENCODATION); 57 return; 58 case C40_ENCODATION: 59 context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_C40); 60 context.signalEncoderChange(C40_ENCODATION); 61 return; 62 case X12_ENCODATION: 63 context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_ANSIX12); 64 context.signalEncoderChange(X12_ENCODATION); 65 break; 66 case TEXT_ENCODATION: 67 context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_TEXT); 68 context.signalEncoderChange(TEXT_ENCODATION); 69 break; 70 case EDIFACT_ENCODATION: 71 context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_EDIFACT); 72 context.signalEncoderChange(EDIFACT_ENCODATION); 73 break; 74 default: 75 e = BCExceptionIllegalStateIllegalMode; 76 return; 77 } 78 } else if (CBC_HighLevelEncoder::isExtendedASCII(c)) { 79 context.writeCodeword(CBC_HighLevelEncoder::UPPER_SHIFT); 80 context.writeCodeword((FX_WCHAR)(c - 128 + 1)); 81 context.m_pos++; 82 } else { 83 context.writeCodeword((FX_WCHAR)(c + 1)); 84 context.m_pos++; 85 } 86 } 87 } 88 FX_WCHAR CBC_ASCIIEncoder::encodeASCIIDigits(FX_WCHAR digit1, 89 FX_WCHAR digit2, 90 int32_t& e) { 91 if (CBC_HighLevelEncoder::isDigit(digit1) && 92 CBC_HighLevelEncoder::isDigit(digit2)) { 93 int32_t num = (digit1 - 48) * 10 + (digit2 - 48); 94 return (FX_WCHAR)(num + 130); 95 } 96 e = BCExceptionIllegalArgumentNotGigits; 97 return 0; 98 } 99
