You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
93 lines
3.1 KiB
93 lines
3.1 KiB
4 months ago
|
// 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 "fxbarcode/datamatrix/BC_Base256Encoder.h"
|
||
|
|
|
||
|
|
#include "fxbarcode/datamatrix/BC_Encoder.h"
|
||
|
|
#include "fxbarcode/datamatrix/BC_EncoderContext.h"
|
||
|
|
#include "fxbarcode/datamatrix/BC_HighLevelEncoder.h"
|
||
|
|
#include "fxbarcode/datamatrix/BC_SymbolInfo.h"
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
|
||
|
|
wchar_t Randomize255State(wchar_t ch, int32_t position) {
|
||
|
|
int32_t pseudoRandom = ((149 * position) % 255) + 1;
|
||
|
|
int32_t tempVariable = ch + pseudoRandom;
|
||
|
|
if (tempVariable <= 255)
|
||
|
|
return static_cast<wchar_t>(tempVariable);
|
||
|
|
return static_cast<wchar_t>(tempVariable - 256);
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace
|
||
|
|
|
||
|
|
CBC_Base256Encoder::CBC_Base256Encoder() = default;
|
||
|
|
|
||
|
|
CBC_Base256Encoder::~CBC_Base256Encoder() = default;
|
||
|
|
|
||
|
|
CBC_HighLevelEncoder::Encoding CBC_Base256Encoder::GetEncodingMode() {
|
||
|
|
return CBC_HighLevelEncoder::Encoding::BASE256;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool CBC_Base256Encoder::Encode(CBC_EncoderContext* context) {
|
||
|
|
WideString buffer;
|
||
|
|
buffer.Reserve(context->getRemainingCharacters() + 1);
|
||
|
|
buffer += L'\0';
|
||
|
|
while (context->hasMoreCharacters()) {
|
||
|
|
wchar_t c = context->getCurrentChar();
|
||
|
|
buffer += c;
|
||
|
|
context->m_pos++;
|
||
|
|
CBC_HighLevelEncoder::Encoding newMode =
|
||
|
|
CBC_HighLevelEncoder::LookAheadTest(context->m_msg, context->m_pos,
|
||
|
|
GetEncodingMode());
|
||
|
|
if (newMode != GetEncodingMode()) {
|
||
|
|
context->SignalEncoderChange(newMode);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
size_t dataCount = buffer.GetLength() - 1;
|
||
|
|
char buf[128];
|
||
|
|
FXSYS_itoa(dataCount, buf, 10);
|
||
|
|
buffer.SetAt(0, static_cast<wchar_t>(*buf) - '0');
|
||
|
|
int32_t lengthFieldSize = 1;
|
||
|
|
int32_t currentSize =
|
||
|
|
context->getCodewordCount() + dataCount + lengthFieldSize;
|
||
|
|
if (!context->UpdateSymbolInfo(currentSize))
|
||
|
|
return false;
|
||
|
|
|
||
|
|
bool mustPad = (context->m_symbolInfo->dataCapacity() - currentSize) > 0;
|
||
|
|
if (context->hasMoreCharacters() || mustPad) {
|
||
|
|
if (dataCount <= 249) {
|
||
|
|
buffer.SetAt(0, static_cast<wchar_t>(dataCount));
|
||
|
|
} else if (dataCount > 249 && dataCount <= 1555) {
|
||
|
|
buffer.SetAt(0, static_cast<wchar_t>((dataCount / 250) + 249));
|
||
|
|
buffer.Insert(1, static_cast<wchar_t>(dataCount % 250));
|
||
|
|
} else {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
for (const auto& c : buffer) {
|
||
|
|
context->writeCodeword(
|
||
|
|
Randomize255State(c, context->getCodewordCount() + 1));
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|