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832a694e52
Updates old-style copyright headers to the new style, by removing "All rights reserved." Also inserts "The" before "PDFium Authors", which is required by both styles. Mechanically generated by this command: PATTERN='Copyright \([0-9]\+\) \(The \)\?PDFium Authors. All rights reserved.' git grep -l "$PATTERN" \ | xargs sed "s/$PATTERN/Copyright \1 The PDFium Authors/" -i'' Fixed: pdfium:1884 Change-Id: I6f781d811df8839e2e21b85f716529b813828bcd Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/100371 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: K. Moon <kmoon@chromium.org>
93 lines
3.1 KiB
C++
93 lines
3.1 KiB
C++
// Copyright 2014 The PDFium Authors
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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 "fxbarcode/datamatrix/BC_Base256Encoder.h"
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#include "fxbarcode/datamatrix/BC_Encoder.h"
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#include "fxbarcode/datamatrix/BC_EncoderContext.h"
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#include "fxbarcode/datamatrix/BC_HighLevelEncoder.h"
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#include "fxbarcode/datamatrix/BC_SymbolInfo.h"
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namespace {
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wchar_t Randomize255State(wchar_t ch, int32_t position) {
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int32_t pseudoRandom = ((149 * position) % 255) + 1;
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int32_t tempVariable = ch + pseudoRandom;
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if (tempVariable <= 255)
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return static_cast<wchar_t>(tempVariable);
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return static_cast<wchar_t>(tempVariable - 256);
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}
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} // namespace
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CBC_Base256Encoder::CBC_Base256Encoder() = default;
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CBC_Base256Encoder::~CBC_Base256Encoder() = default;
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CBC_HighLevelEncoder::Encoding CBC_Base256Encoder::GetEncodingMode() {
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return CBC_HighLevelEncoder::Encoding::BASE256;
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}
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bool CBC_Base256Encoder::Encode(CBC_EncoderContext* context) {
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WideString buffer;
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buffer.Reserve(context->getRemainingCharacters() + 1);
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buffer += L'\0';
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while (context->hasMoreCharacters()) {
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wchar_t c = context->getCurrentChar();
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buffer += c;
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context->m_pos++;
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CBC_HighLevelEncoder::Encoding newMode =
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CBC_HighLevelEncoder::LookAheadTest(context->m_msg, context->m_pos,
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GetEncodingMode());
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if (newMode != GetEncodingMode()) {
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context->SignalEncoderChange(newMode);
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break;
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}
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}
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size_t dataCount = buffer.GetLength() - 1;
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char buf[128];
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FXSYS_itoa(dataCount, buf, 10);
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buffer.SetAt(0, static_cast<wchar_t>(*buf) - '0');
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int32_t lengthFieldSize = 1;
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int32_t currentSize =
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context->getCodewordCount() + dataCount + lengthFieldSize;
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if (!context->UpdateSymbolInfo(currentSize))
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return false;
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bool mustPad = (context->m_symbolInfo->data_capacity() - currentSize) > 0;
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if (context->hasMoreCharacters() || mustPad) {
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if (dataCount <= 249) {
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buffer.SetAt(0, static_cast<wchar_t>(dataCount));
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} else if (dataCount > 249 && dataCount <= 1555) {
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buffer.SetAt(0, static_cast<wchar_t>((dataCount / 250) + 249));
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buffer.Insert(1, static_cast<wchar_t>(dataCount % 250));
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} else {
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return false;
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}
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}
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for (const auto& c : buffer) {
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context->writeCodeword(
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Randomize255State(c, context->getCodewordCount() + 1));
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}
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return true;
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}
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