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| 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/src/fxbarcode/BC_Dimension.h" | |
| 24 #include "xfa/src/fxbarcode/datamatrix/BC_ASCIIEncoder.h" | |
| 25 #include "xfa/src/fxbarcode/datamatrix/BC_Encoder.h" | |
| 26 #include "xfa/src/fxbarcode/datamatrix/BC_EncoderContext.h" | |
| 27 #include "xfa/src/fxbarcode/datamatrix/BC_HighLevelEncoder.h" | |
| 28 #include "xfa/src/fxbarcode/datamatrix/BC_SymbolInfo.h" | |
| 29 #include "xfa/src/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 } | |
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