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_X12Encoder.h" 24 25 #include "fxbarcode/common/BC_CommonBitMatrix.h" 26 #include "fxbarcode/datamatrix/BC_C40Encoder.h" 27 #include "fxbarcode/datamatrix/BC_Encoder.h" 28 #include "fxbarcode/datamatrix/BC_EncoderContext.h" 29 #include "fxbarcode/datamatrix/BC_HighLevelEncoder.h" 30 #include "fxbarcode/datamatrix/BC_SymbolInfo.h" 31 #include "fxbarcode/utils.h" 32 33 CBC_X12Encoder::CBC_X12Encoder() {} 34 CBC_X12Encoder::~CBC_X12Encoder() {} 35 int32_t CBC_X12Encoder::getEncodingMode() { 36 return X12_ENCODATION; 37 } 38 void CBC_X12Encoder::Encode(CBC_EncoderContext& context, int32_t& e) { 39 WideString buffer; 40 while (context.hasMoreCharacters()) { 41 wchar_t c = context.getCurrentChar(); 42 context.m_pos++; 43 encodeChar(c, buffer, e); 44 if (e != BCExceptionNO) { 45 return; 46 } 47 int32_t count = buffer.GetLength(); 48 if ((count % 3) == 0) { 49 writeNextTriplet(context, buffer); 50 int32_t newMode = CBC_HighLevelEncoder::lookAheadTest( 51 context.m_msg, context.m_pos, getEncodingMode()); 52 if (newMode != getEncodingMode()) { 53 context.signalEncoderChange(newMode); 54 break; 55 } 56 } 57 } 58 handleEOD(context, buffer, e); 59 } 60 void CBC_X12Encoder::handleEOD(CBC_EncoderContext& context, 61 WideString& buffer, 62 int32_t& e) { 63 context.updateSymbolInfo(e); 64 if (e != BCExceptionNO) { 65 return; 66 } 67 int32_t available = 68 context.m_symbolInfo->dataCapacity() - context.getCodewordCount(); 69 int32_t count = buffer.GetLength(); 70 if (count == 2) { 71 context.writeCodeword(CBC_HighLevelEncoder::X12_UNLATCH); 72 context.m_pos -= 2; 73 context.signalEncoderChange(ASCII_ENCODATION); 74 } else if (count == 1) { 75 context.m_pos--; 76 if (available > 1) { 77 context.writeCodeword(CBC_HighLevelEncoder::X12_UNLATCH); 78 } 79 context.signalEncoderChange(ASCII_ENCODATION); 80 } 81 } 82 int32_t CBC_X12Encoder::encodeChar(wchar_t c, WideString& sb, int32_t& e) { 83 if (c == '\r') { 84 sb += (wchar_t)'\0'; 85 } else if (c == '*') { 86 sb += (wchar_t)'\1'; 87 } else if (c == '>') { 88 sb += (wchar_t)'\2'; 89 } else if (c == ' ') { 90 sb += (wchar_t)'\3'; 91 } else if (c >= '0' && c <= '9') { 92 sb += (wchar_t)(c - 48 + 4); 93 } else if (c >= 'A' && c <= 'Z') { 94 sb += (wchar_t)(c - 65 + 14); 95 } else { 96 e = BCExceptionIllegalArgument; 97 return -1; 98 } 99 return 1; 100 } 101
