| // 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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|
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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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| * 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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| */
|
|
|
| #include "../barcode.h"
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| #include "../BC_Dimension.h"
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| #include "BC_Encoder.h"
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| #include "BC_SymbolShapeHint.h"
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| #include "BC_SymbolInfo.h"
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| #include "BC_EncoderContext.h"
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| #include "BC_HighLevelEncoder.h"
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| #include "BC_ASCIIEncoder.h"
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| CBC_ASCIIEncoder::CBC_ASCIIEncoder()
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| {
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| }
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| CBC_ASCIIEncoder::~CBC_ASCIIEncoder()
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| {
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| }
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| FX_INT32 CBC_ASCIIEncoder::getEncodingMode()
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| {
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| return ASCII_ENCODATION;
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| }
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| void CBC_ASCIIEncoder::Encode(CBC_EncoderContext &context, FX_INT32 &e)
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| {
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| FX_INT32 n = CBC_HighLevelEncoder::determineConsecutiveDigitCount(context.m_msg, context.m_pos);
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| if (n >= 2) {
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| FX_WCHAR code = encodeASCIIDigits(context.m_msg.GetAt(context.m_pos), 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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| FX_INT32 newMode = CBC_HighLevelEncoder::lookAheadTest(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, FX_WCHAR digit2, FX_INT32 &e)
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| {
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| if (CBC_HighLevelEncoder::isDigit(digit1) && CBC_HighLevelEncoder::isDigit(digit2)) {
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| FX_INT32 num = (digit1 - 48) * 10 + (digit2 - 48);
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| FX_WCHAR a = (FX_WCHAR) (num + 130);
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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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| }
|