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240 lines
8.1 KiB
240 lines
8.1 KiB
// 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 2010 ZXing authors
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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/oned/BC_OnedCode39Writer.h"
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#include <algorithm>
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#include <memory>
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#include "core/fxcrt/fx_extension.h"
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#include "core/fxcrt/fx_memory_wrappers.h"
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#include "fxbarcode/BC_Writer.h"
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#include "fxbarcode/common/BC_CommonBitMatrix.h"
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#include "fxbarcode/oned/BC_OneDimWriter.h"
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namespace {
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const char kOnedCode39Alphabet[] = {
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'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E',
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'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
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'U', 'V', 'W', 'X', 'Y', 'Z', '-', '.', ' ', '*', '$', '/', '+', '%'};
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constexpr size_t kOnedCode39AlphabetLen = FX_ArraySize(kOnedCode39Alphabet);
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const char kOnedCode39Checksum[] = {
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'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E',
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'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T',
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'U', 'V', 'W', 'X', 'Y', 'Z', '-', '.', ' ', '$', '/', '+', '%'};
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static_assert(FX_ArraySize(kOnedCode39Checksum) == 43, "Wrong size");
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const int16_t kOnedCode39CharacterEncoding[] = {
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0x0034, 0x0121, 0x0061, 0x0160, 0x0031, 0x0130, 0x0070, 0x0025, 0x0124,
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0x0064, 0x0109, 0x0049, 0x0148, 0x0019, 0x0118, 0x0058, 0x000D, 0x010C,
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0x004C, 0x001C, 0x0103, 0x0043, 0x0142, 0x0013, 0x0112, 0x0052, 0x0007,
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0x0106, 0x0046, 0x0016, 0x0181, 0x00C1, 0x01C0, 0x0091, 0x0190, 0x00D0,
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0x0085, 0x0184, 0x00C4, 0x0094, 0x00A8, 0x00A2, 0x008A, 0x002A};
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static_assert(FX_ArraySize(kOnedCode39CharacterEncoding) == 44, "Wrong size");
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bool IsInOnedCode39Alphabet(wchar_t ch) {
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return FXSYS_IsDecimalDigit(ch) || (ch >= L'A' && ch <= L'Z') || ch == L'-' ||
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ch == L'.' || ch == L' ' || ch == L'*' || ch == L'$' || ch == L'/' ||
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ch == L'+' || ch == L'%';
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}
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} // namespace
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CBC_OnedCode39Writer::CBC_OnedCode39Writer() = default;
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CBC_OnedCode39Writer::~CBC_OnedCode39Writer() = default;
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bool CBC_OnedCode39Writer::CheckContentValidity(WideStringView contents) {
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return std::all_of(contents.begin(), contents.end(), IsInOnedCode39Alphabet);
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}
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WideString CBC_OnedCode39Writer::FilterContents(WideStringView contents) {
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WideString filtercontents;
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filtercontents.Reserve(contents.GetLength());
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for (size_t i = 0; i < contents.GetLength(); i++) {
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wchar_t ch = contents[i];
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if (ch == L'*' && (i == 0 || i == contents.GetLength() - 1)) {
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continue;
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}
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if (ch > 175) {
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i++;
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continue;
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}
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ch = FXSYS_ToUpperASCII(ch);
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if (IsInOnedCode39Alphabet(ch))
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filtercontents += ch;
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}
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return filtercontents;
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}
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WideString CBC_OnedCode39Writer::RenderTextContents(WideStringView contents) {
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WideString renderContents;
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for (size_t i = 0; i < contents.GetLength(); i++) {
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wchar_t ch = contents[i];
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if (ch == L'*' && (i == 0 || i == contents.GetLength() - 1)) {
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continue;
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}
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if (ch > 175) {
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i++;
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continue;
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}
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if (IsInOnedCode39Alphabet(FXSYS_ToUpperASCII(ch)))
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renderContents += ch;
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}
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return renderContents;
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}
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bool CBC_OnedCode39Writer::SetTextLocation(BC_TEXT_LOC location) {
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if (location < BC_TEXT_LOC_NONE || location > BC_TEXT_LOC_BELOWEMBED) {
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return false;
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}
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m_locTextLoc = location;
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return true;
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}
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bool CBC_OnedCode39Writer::SetWideNarrowRatio(int8_t ratio) {
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if (ratio < 2 || ratio > 3)
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return false;
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m_iWideNarrRatio = ratio;
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return true;
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}
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uint8_t* CBC_OnedCode39Writer::EncodeWithHint(const ByteString& contents,
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BCFORMAT format,
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int32_t& outWidth,
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int32_t& outHeight,
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int32_t hints) {
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if (format != BCFORMAT_CODE_39)
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return nullptr;
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return CBC_OneDimWriter::EncodeWithHint(contents, format, outWidth, outHeight,
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hints);
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}
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void CBC_OnedCode39Writer::ToIntArray(int16_t a, int8_t* toReturn) {
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for (int32_t i = 0; i < 9; i++) {
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toReturn[i] = (a & (1 << i)) == 0 ? 1 : m_iWideNarrRatio;
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}
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}
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char CBC_OnedCode39Writer::CalcCheckSum(const ByteString& contents) {
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if (contents.GetLength() > 80)
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return '*';
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int32_t checksum = 0;
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for (const auto& c : contents) {
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size_t j = 0;
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for (; j < kOnedCode39AlphabetLen; j++) {
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if (kOnedCode39Alphabet[j] == c) {
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if (c != '*')
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checksum += j;
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break;
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}
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}
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if (j >= kOnedCode39AlphabetLen)
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return '*';
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}
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return kOnedCode39Checksum[checksum % FX_ArraySize(kOnedCode39Checksum)];
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}
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uint8_t* CBC_OnedCode39Writer::EncodeImpl(const ByteString& contents,
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int32_t& outlength) {
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char checksum = CalcCheckSum(contents);
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if (checksum == '*')
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return nullptr;
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int8_t widths[9] = {0};
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int32_t wideStrideNum = 3;
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int32_t narrStrideNum = 9 - wideStrideNum;
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ByteString encodedContents = contents;
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if (m_bCalcChecksum)
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encodedContents += checksum;
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m_iContentLen = encodedContents.GetLength();
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int32_t codeWidth = (wideStrideNum * m_iWideNarrRatio + narrStrideNum) * 2 +
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1 + m_iContentLen;
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for (size_t j = 0; j < m_iContentLen; j++) {
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for (size_t i = 0; i < kOnedCode39AlphabetLen; i++) {
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if (kOnedCode39Alphabet[i] != encodedContents[j])
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continue;
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ToIntArray(kOnedCode39CharacterEncoding[i], widths);
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for (size_t k = 0; k < 9; k++)
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codeWidth += widths[k];
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}
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}
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outlength = codeWidth;
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std::unique_ptr<uint8_t, FxFreeDeleter> result(FX_Alloc(uint8_t, codeWidth));
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ToIntArray(kOnedCode39CharacterEncoding[39], widths);
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int32_t pos = AppendPattern(result.get(), 0, widths, 9, true);
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int8_t narrowWhite[] = {1};
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pos += AppendPattern(result.get(), pos, narrowWhite, 1, false);
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for (int32_t l = m_iContentLen - 1; l >= 0; l--) {
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for (size_t i = 0; i < kOnedCode39AlphabetLen; i++) {
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if (kOnedCode39Alphabet[i] != encodedContents[l])
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continue;
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ToIntArray(kOnedCode39CharacterEncoding[i], widths);
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pos += AppendPattern(result.get(), pos, widths, 9, true);
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}
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pos += AppendPattern(result.get(), pos, narrowWhite, 1, false);
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}
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ToIntArray(kOnedCode39CharacterEncoding[39], widths);
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pos += AppendPattern(result.get(), pos, widths, 9, true);
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auto* result_ptr = result.get();
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for (int32_t i = 0; i < codeWidth / 2; i++) {
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result_ptr[i] ^= result_ptr[codeWidth - 1 - i];
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result_ptr[codeWidth - 1 - i] ^= result_ptr[i];
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result_ptr[i] ^= result_ptr[codeWidth - 1 - i];
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}
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return result.release();
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}
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bool CBC_OnedCode39Writer::encodedContents(WideStringView contents,
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WideString* result) {
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*result = WideString(contents);
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if (m_bCalcChecksum && m_bPrintChecksum) {
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WideString checksumContent = FilterContents(contents);
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ByteString str = checksumContent.ToUTF8();
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char checksum;
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checksum = CalcCheckSum(str);
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if (checksum == '*')
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return false;
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str += checksum;
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*result += checksum;
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}
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return true;
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}
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bool CBC_OnedCode39Writer::RenderResult(WideStringView contents,
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uint8_t* code,
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int32_t codeLength) {
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WideString encodedCon;
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if (!encodedContents(contents, &encodedCon))
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return false;
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return CBC_OneDimWriter::RenderResult(encodedCon.AsStringView(), code,
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codeLength);
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}
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