// Copyright 2014 PDFium Authors. All rights reserved. | |
// Use of this source code is governed by a BSD-style license that can be | |
// found in the LICENSE file. | |
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | |
// Original code is licensed as follows: | |
/* | |
* Copyright 2006-2007 Jeremias Maerki. | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); | |
* you may not use this file except in compliance with the License. | |
* You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software | |
* distributed under the License is distributed on an "AS IS" BASIS, | |
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
* See the License for the specific language governing permissions and | |
* limitations under the License. | |
*/ | |
#include "xfa/src/fxbarcode/barcode.h" | |
#include "xfa/src/fxbarcode/BC_Dimension.h" | |
#include "BC_Encoder.h" | |
#include "BC_SymbolShapeHint.h" | |
#include "BC_SymbolInfo.h" | |
#include "BC_EncoderContext.h" | |
#include "BC_HighLevelEncoder.h" | |
#include "BC_ASCIIEncoder.h" | |
CBC_ASCIIEncoder::CBC_ASCIIEncoder() {} | |
CBC_ASCIIEncoder::~CBC_ASCIIEncoder() {} | |
int32_t CBC_ASCIIEncoder::getEncodingMode() { | |
return ASCII_ENCODATION; | |
} | |
void CBC_ASCIIEncoder::Encode(CBC_EncoderContext& context, int32_t& e) { | |
int32_t n = CBC_HighLevelEncoder::determineConsecutiveDigitCount( | |
context.m_msg, context.m_pos); | |
if (n >= 2) { | |
FX_WCHAR code = | |
encodeASCIIDigits(context.m_msg.GetAt(context.m_pos), | |
context.m_msg.GetAt(context.m_pos + 1), e); | |
if (e != BCExceptionNO) { | |
return; | |
} | |
context.writeCodeword(code); | |
context.m_pos += 2; | |
} else { | |
FX_WCHAR c = context.getCurrentChar(); | |
int32_t newMode = CBC_HighLevelEncoder::lookAheadTest( | |
context.m_msg, context.m_pos, getEncodingMode()); | |
if (newMode != getEncodingMode()) { | |
switch (newMode) { | |
case BASE256_ENCODATION: | |
context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_BASE256); | |
context.signalEncoderChange(BASE256_ENCODATION); | |
return; | |
case C40_ENCODATION: | |
context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_C40); | |
context.signalEncoderChange(C40_ENCODATION); | |
return; | |
case X12_ENCODATION: | |
context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_ANSIX12); | |
context.signalEncoderChange(X12_ENCODATION); | |
break; | |
case TEXT_ENCODATION: | |
context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_TEXT); | |
context.signalEncoderChange(TEXT_ENCODATION); | |
break; | |
case EDIFACT_ENCODATION: | |
context.writeCodeword(CBC_HighLevelEncoder::LATCH_TO_EDIFACT); | |
context.signalEncoderChange(EDIFACT_ENCODATION); | |
break; | |
default: | |
e = BCExceptionIllegalStateIllegalMode; | |
return; | |
} | |
} else if (CBC_HighLevelEncoder::isExtendedASCII(c)) { | |
context.writeCodeword(CBC_HighLevelEncoder::UPPER_SHIFT); | |
context.writeCodeword((FX_WCHAR)(c - 128 + 1)); | |
context.m_pos++; | |
} else { | |
context.writeCodeword((FX_WCHAR)(c + 1)); | |
context.m_pos++; | |
} | |
} | |
} | |
FX_WCHAR CBC_ASCIIEncoder::encodeASCIIDigits(FX_WCHAR digit1, | |
FX_WCHAR digit2, | |
int32_t& e) { | |
if (CBC_HighLevelEncoder::isDigit(digit1) && | |
CBC_HighLevelEncoder::isDigit(digit2)) { | |
int32_t num = (digit1 - 48) * 10 + (digit2 - 48); | |
return (FX_WCHAR)(num + 130); | |
} | |
e = BCExceptionIllegalArgumentNotGigits; | |
return 0; | |
} |