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