| // 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 2010 ZXing authors |
| * |
| * 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/oned/BC_OnedCode39Writer.h" |
| |
| #include <memory> |
| |
| #include "fxbarcode/BC_Writer.h" |
| #include "fxbarcode/common/BC_CommonBitMatrix.h" |
| #include "fxbarcode/oned/BC_OneDimWriter.h" |
| |
| namespace { |
| |
| const char ALPHABET_STRING[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. *$/+%"; |
| |
| const char CHECKSUM_STRING[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%"; |
| |
| const int32_t CHARACTER_ENCODINGS[44] = { |
| 0x034, 0x121, 0x061, 0x160, 0x031, 0x130, 0x070, 0x025, 0x124, |
| 0x064, 0x109, 0x049, 0x148, 0x019, 0x118, 0x058, 0x00D, 0x10C, |
| 0x04C, 0x01C, 0x103, 0x043, 0x142, 0x013, 0x112, 0x052, 0x007, |
| 0x106, 0x046, 0x016, 0x181, 0x0C1, 0x1C0, 0x091, 0x190, 0x0D0, |
| 0x085, 0x184, 0x0C4, 0x094, 0x0A8, 0x0A2, 0x08A, 0x02A}; |
| |
| } // namespace |
| |
| CBC_OnedCode39Writer::CBC_OnedCode39Writer() : m_iWideNarrRatio(3) {} |
| |
| CBC_OnedCode39Writer::~CBC_OnedCode39Writer() {} |
| |
| bool CBC_OnedCode39Writer::CheckContentValidity( |
| const WideStringView& contents) { |
| for (size_t i = 0; i < contents.GetLength(); i++) { |
| wchar_t ch = contents[i]; |
| if ((ch >= L'0' && ch <= L'9') || (ch >= L'A' && ch <= L'Z') || |
| ch == L'-' || ch == L'.' || ch == L' ' || ch == L'*' || ch == L'$' || |
| ch == L'/' || ch == L'+' || ch == L'%') { |
| continue; |
| } |
| return false; |
| } |
| return true; |
| } |
| |
| WideString CBC_OnedCode39Writer::FilterContents( |
| const WideStringView& contents) { |
| WideString filtercontents; |
| for (size_t i = 0; i < contents.GetLength(); i++) { |
| wchar_t ch = contents[i]; |
| if (ch == L'*' && (i == 0 || i == contents.GetLength() - 1)) { |
| continue; |
| } |
| if (ch > 175) { |
| i++; |
| continue; |
| } |
| ch = Upper(ch); |
| if ((ch >= L'0' && ch <= L'9') || (ch >= L'A' && ch <= L'Z') || |
| ch == L'-' || ch == L'.' || ch == L' ' || ch == L'*' || ch == L'$' || |
| ch == L'/' || ch == L'+' || ch == L'%') { |
| filtercontents += ch; |
| } |
| } |
| return filtercontents; |
| } |
| |
| WideString CBC_OnedCode39Writer::RenderTextContents( |
| const WideStringView& contents) { |
| WideString renderContents; |
| for (size_t i = 0; i < contents.GetLength(); i++) { |
| wchar_t ch = contents[i]; |
| if (ch == L'*' && (i == 0 || i == contents.GetLength() - 1)) { |
| continue; |
| } |
| if (ch > 175) { |
| i++; |
| continue; |
| } |
| if ((ch >= L'0' && ch <= L'9') || (ch >= L'A' && ch <= L'Z') || |
| (ch >= L'a' && ch <= L'z') || ch == L'-' || ch == L'.' || ch == L' ' || |
| ch == L'*' || ch == L'$' || ch == L'/' || ch == L'+' || ch == L'%') { |
| renderContents += ch; |
| } |
| } |
| return renderContents; |
| } |
| |
| bool CBC_OnedCode39Writer::SetTextLocation(BC_TEXT_LOC location) { |
| if (location < BC_TEXT_LOC_NONE || location > BC_TEXT_LOC_BELOWEMBED) { |
| return false; |
| } |
| m_locTextLoc = location; |
| return true; |
| } |
| bool CBC_OnedCode39Writer::SetWideNarrowRatio(int8_t ratio) { |
| if (ratio < 2 || ratio > 3) |
| return false; |
| |
| m_iWideNarrRatio = ratio; |
| return true; |
| } |
| |
| uint8_t* CBC_OnedCode39Writer::EncodeWithHint(const ByteString& contents, |
| BCFORMAT format, |
| int32_t& outWidth, |
| int32_t& outHeight, |
| int32_t hints) { |
| if (format != BCFORMAT_CODE_39) |
| return nullptr; |
| return CBC_OneDimWriter::EncodeWithHint(contents, format, outWidth, outHeight, |
| hints); |
| } |
| |
| void CBC_OnedCode39Writer::ToIntArray(int32_t a, int8_t* toReturn) { |
| for (int32_t i = 0; i < 9; i++) { |
| toReturn[i] = (a & (1 << i)) == 0 ? 1 : m_iWideNarrRatio; |
| } |
| } |
| |
| char CBC_OnedCode39Writer::CalcCheckSum(const ByteString& contents) { |
| if (contents.GetLength() > 80) |
| return '*'; |
| |
| int32_t checksum = 0; |
| size_t len = strlen(ALPHABET_STRING); |
| for (const auto& c : contents) { |
| size_t j = 0; |
| for (; j < len; j++) { |
| if (ALPHABET_STRING[j] == c) { |
| if (c != '*') |
| checksum += j; |
| break; |
| } |
| } |
| if (j >= len) |
| return '*'; |
| } |
| checksum = checksum % 43; |
| return CHECKSUM_STRING[checksum]; |
| } |
| |
| uint8_t* CBC_OnedCode39Writer::EncodeImpl(const ByteString& contents, |
| int32_t& outlength) { |
| char checksum = CalcCheckSum(contents); |
| if (checksum == '*') |
| return nullptr; |
| |
| int8_t widths[9] = {0}; |
| int32_t wideStrideNum = 3; |
| int32_t narrStrideNum = 9 - wideStrideNum; |
| ByteString encodedContents = contents; |
| if (m_bCalcChecksum) |
| encodedContents += checksum; |
| m_iContentLen = encodedContents.GetLength(); |
| int32_t codeWidth = (wideStrideNum * m_iWideNarrRatio + narrStrideNum) * 2 + |
| 1 + m_iContentLen; |
| size_t len = strlen(ALPHABET_STRING); |
| for (size_t j = 0; j < m_iContentLen; j++) { |
| for (size_t i = 0; i < len; i++) { |
| if (ALPHABET_STRING[i] != encodedContents[j]) |
| continue; |
| |
| ToIntArray(CHARACTER_ENCODINGS[i], widths); |
| for (size_t k = 0; k < 9; k++) |
| codeWidth += widths[k]; |
| } |
| } |
| outlength = codeWidth; |
| std::unique_ptr<uint8_t, FxFreeDeleter> result(FX_Alloc(uint8_t, codeWidth)); |
| ToIntArray(CHARACTER_ENCODINGS[39], widths); |
| int32_t e = BCExceptionNO; |
| int32_t pos = AppendPattern(result.get(), 0, widths, 9, 1, e); |
| if (e != BCExceptionNO) |
| return nullptr; |
| |
| int8_t narrowWhite[] = {1}; |
| pos += AppendPattern(result.get(), pos, narrowWhite, 1, 0, e); |
| if (e != BCExceptionNO) |
| return nullptr; |
| |
| for (int32_t l = m_iContentLen - 1; l >= 0; l--) { |
| for (size_t i = 0; i < len; i++) { |
| if (ALPHABET_STRING[i] != encodedContents[l]) |
| continue; |
| |
| ToIntArray(CHARACTER_ENCODINGS[i], widths); |
| pos += AppendPattern(result.get(), pos, widths, 9, 1, e); |
| if (e != BCExceptionNO) |
| return nullptr; |
| } |
| pos += AppendPattern(result.get(), pos, narrowWhite, 1, 0, e); |
| if (e != BCExceptionNO) |
| return nullptr; |
| } |
| ToIntArray(CHARACTER_ENCODINGS[39], widths); |
| pos += AppendPattern(result.get(), pos, widths, 9, 1, e); |
| if (e != BCExceptionNO) |
| return nullptr; |
| |
| auto* result_ptr = result.get(); |
| for (int32_t i = 0; i < codeWidth / 2; i++) { |
| result_ptr[i] ^= result_ptr[codeWidth - 1 - i]; |
| result_ptr[codeWidth - 1 - i] ^= result_ptr[i]; |
| result_ptr[i] ^= result_ptr[codeWidth - 1 - i]; |
| } |
| return result.release(); |
| } |
| |
| bool CBC_OnedCode39Writer::encodedContents(const WideStringView& contents, |
| WideString* result) { |
| *result = WideString(contents); |
| if (m_bCalcChecksum && m_bPrintChecksum) { |
| WideString checksumContent = FilterContents(contents); |
| ByteString str = checksumContent.UTF8Encode(); |
| char checksum; |
| checksum = CalcCheckSum(str); |
| if (checksum == '*') |
| return false; |
| str += checksum; |
| *result += checksum; |
| } |
| return true; |
| } |
| |
| bool CBC_OnedCode39Writer::RenderResult(const WideStringView& contents, |
| uint8_t* code, |
| int32_t codeLength) { |
| WideString encodedCon; |
| if (!encodedContents(contents, &encodedCon)) |
| return false; |
| return CBC_OneDimWriter::RenderResult(encodedCon.AsStringView(), code, |
| codeLength); |
| } |
