// 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 "xfa/fxbarcode/BC_Writer.h" #include "xfa/fxbarcode/common/BC_CommonBitMatrix.h" #include "xfa/fxbarcode/oned/BC_OneDimWriter.h" #include "xfa/fxbarcode/oned/BC_OnedCode39Writer.h" namespace { const FX_CHAR ALPHABET_STRING[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. *$/+%"; const FX_CHAR CHECKSUM_STRING[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ-. $/+%"; const int32_t CHARACTER_ENCODINGS[44] = { 0x034, 0x121, 0x061, 0x160, 0x031, 0x130, 0x070, 0x025, 0x124, 0x064, 0x109, 0x049, 0x148, 0x019, 0x118, 0x058, 0x00D, 0x10C, 0x04C, 0x01C, 0x103, 0x043, 0x142, 0x013, 0x112, 0x052, 0x007, 0x106, 0x046, 0x016, 0x181, 0x0C1, 0x1C0, 0x091, 0x190, 0x0D0, 0x085, 0x184, 0x0C4, 0x094, 0x0A8, 0x0A2, 0x08A, 0x02A}; } // namespace CBC_OnedCode39Writer::CBC_OnedCode39Writer() { m_iWideNarrRatio = 3; } CBC_OnedCode39Writer::~CBC_OnedCode39Writer() {} bool CBC_OnedCode39Writer::CheckContentValidity( const CFX_WideStringC& contents) { for (int32_t i = 0; i < contents.GetLength(); i++) { FX_WCHAR ch = contents.GetAt(i); if ((ch >= (FX_WCHAR)'0' && ch <= (FX_WCHAR)'9') || (ch >= (FX_WCHAR)'A' && ch <= (FX_WCHAR)'Z') || ch == (FX_WCHAR)'-' || ch == (FX_WCHAR)'.' || ch == (FX_WCHAR)' ' || ch == (FX_WCHAR)'*' || ch == (FX_WCHAR)'$' || ch == (FX_WCHAR)'/' || ch == (FX_WCHAR)'+' || ch == (FX_WCHAR)'%') { continue; } return false; } return true; } CFX_WideString CBC_OnedCode39Writer::FilterContents( const CFX_WideStringC& contents) { CFX_WideString filtercontents; for (int32_t i = 0; i < contents.GetLength(); i++) { FX_WCHAR ch = contents.GetAt(i); if (ch == (FX_WCHAR)'*' && (i == 0 || i == contents.GetLength() - 1)) { continue; } if (ch > 175) { i++; continue; } else { ch = Upper(ch); } if ((ch >= (FX_WCHAR)'0' && ch <= (FX_WCHAR)'9') || (ch >= (FX_WCHAR)'A' && ch <= (FX_WCHAR)'Z') || ch == (FX_WCHAR)'-' || ch == (FX_WCHAR)'.' || ch == (FX_WCHAR)' ' || ch == (FX_WCHAR)'*' || ch == (FX_WCHAR)'$' || ch == (FX_WCHAR)'/' || ch == (FX_WCHAR)'+' || ch == (FX_WCHAR)'%') { filtercontents += ch; } } return filtercontents; } CFX_WideString CBC_OnedCode39Writer::RenderTextContents( const CFX_WideStringC& contents) { CFX_WideString renderContents; for (int32_t i = 0; i < contents.GetLength(); i++) { FX_WCHAR ch = contents.GetAt(i); if (ch == (FX_WCHAR)'*' && (i == 0 || i == contents.GetLength() - 1)) { continue; } if (ch > 175) { i++; continue; } if ((ch >= (FX_WCHAR)'0' && ch <= (FX_WCHAR)'9') || (ch >= (FX_WCHAR)'A' && ch <= (FX_WCHAR)'Z') || (ch >= (FX_WCHAR)'a' && ch <= (FX_WCHAR)'z') || ch == (FX_WCHAR)'-' || ch == (FX_WCHAR)'.' || ch == (FX_WCHAR)' ' || ch == (FX_WCHAR)'*' || ch == (FX_WCHAR)'$' || ch == (FX_WCHAR)'/' || ch == (FX_WCHAR)'+' || ch == (FX_WCHAR)'%') { 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(int32_t ratio) { if (ratio < 2 || ratio > 3) { return false; } m_iWideNarrRatio = ratio; return true; } uint8_t* CBC_OnedCode39Writer::Encode(const CFX_ByteString& contents, BCFORMAT format, int32_t& outWidth, int32_t& outHeight, int32_t& e) { uint8_t* ret = Encode(contents, format, outWidth, outHeight, 0, e); if (e != BCExceptionNO) return nullptr; return ret; } uint8_t* CBC_OnedCode39Writer::Encode(const CFX_ByteString& contents, BCFORMAT format, int32_t& outWidth, int32_t& outHeight, int32_t hints, int32_t& e) { if (format != BCFORMAT_CODE_39) { e = BCExceptionOnlyEncodeCODE_39; return nullptr; } uint8_t* ret = CBC_OneDimWriter::Encode(contents, format, outWidth, outHeight, hints, e); if (e != BCExceptionNO) return nullptr; return ret; } void CBC_OnedCode39Writer::ToIntArray(int32_t a, int32_t* toReturn) { for (int32_t i = 0; i < 9; i++) { toReturn[i] = (a & (1 << i)) == 0 ? 1 : m_iWideNarrRatio; } } FX_CHAR CBC_OnedCode39Writer::CalcCheckSum(const CFX_ByteString& contents, int32_t& e) { int32_t length = contents.GetLength(); if (length > 80) { e = BCExceptionContentsLengthShouldBetween1and80; return '*'; } int32_t checksum = 0; int32_t len = (int32_t)strlen(ALPHABET_STRING); for (int32_t i = 0; i < contents.GetLength(); i++) { int32_t j = 0; for (; j < len; j++) { if (ALPHABET_STRING[j] == contents[i]) { if (contents[i] != '*') { checksum += j; break; } else { break; } } } if (j >= len) { e = BCExceptionUnSupportedString; return '*'; } } checksum = checksum % 43; return CHECKSUM_STRING[checksum]; } uint8_t* CBC_OnedCode39Writer::Encode(const CFX_ByteString& contents, int32_t& outlength, int32_t& e) { FX_CHAR checksum = CalcCheckSum(contents, e); if (checksum == '*') { return nullptr; } int32_t widths[9] = {0}; int32_t wideStrideNum = 3; int32_t narrStrideNum = 9 - wideStrideNum; CFX_ByteString encodedContents = contents; if (m_bCalcChecksum) { encodedContents += checksum; } m_iContentLen = encodedContents.GetLength(); int32_t codeWidth = (wideStrideNum * m_iWideNarrRatio + narrStrideNum) * 2 + 1 + m_iContentLen; int32_t len = (int32_t)strlen(ALPHABET_STRING); for (int32_t j = 0; j < m_iContentLen; j++) { for (int32_t i = 0; i < len; i++) { if (ALPHABET_STRING[i] == encodedContents[j]) { ToIntArray(CHARACTER_ENCODINGS[i], widths); for (int32_t k = 0; k < 9; k++) { codeWidth += widths[k]; } } } } outlength = codeWidth; uint8_t* result = FX_Alloc(uint8_t, codeWidth); ToIntArray(CHARACTER_ENCODINGS[39], widths); int32_t pos = AppendPattern(result, 0, widths, 9, 1, e); if (e != BCExceptionNO) { FX_Free(result); return nullptr; } int32_t narrowWhite[] = {1}; pos += AppendPattern(result, pos, narrowWhite, 1, 0, e); if (e != BCExceptionNO) { FX_Free(result); return nullptr; } for (int32_t l = m_iContentLen - 1; l >= 0; l--) { for (int32_t i = 0; i < len; i++) { if (ALPHABET_STRING[i] == encodedContents[l]) { ToIntArray(CHARACTER_ENCODINGS[i], widths); pos += AppendPattern(result, pos, widths, 9, 1, e); if (e != BCExceptionNO) { FX_Free(result); return nullptr; } } } pos += AppendPattern(result, pos, narrowWhite, 1, 0, e); if (e != BCExceptionNO) { FX_Free(result); return nullptr; } } ToIntArray(CHARACTER_ENCODINGS[39], widths); pos += AppendPattern(result, pos, widths, 9, 1, e); if (e != BCExceptionNO) { FX_Free(result); return nullptr; } for (int32_t i = 0; i < codeWidth / 2; i++) { result[i] ^= result[codeWidth - 1 - i]; result[codeWidth - 1 - i] ^= result[i]; result[i] ^= result[codeWidth - 1 - i]; } return result; } CFX_WideString CBC_OnedCode39Writer::encodedContents( const CFX_WideStringC& contents, int32_t& e) { CFX_WideString encodedContents(contents); if (m_bCalcChecksum && m_bPrintChecksum) { CFX_WideString checksumContent = FilterContents(contents); CFX_ByteString str = checksumContent.UTF8Encode(); FX_CHAR checksum; checksum = CalcCheckSum(str, e); if (e != BCExceptionNO) return CFX_WideString(); str += checksum; encodedContents += checksum; } return encodedContents; } void CBC_OnedCode39Writer::RenderResult(const CFX_WideStringC& contents, uint8_t* code, int32_t codeLength, bool isDevice, int32_t& e) { CFX_WideString encodedCon = encodedContents(contents, e); if (e != BCExceptionNO) return; CBC_OneDimWriter::RenderResult(encodedCon.AsStringC(), code, codeLength, isDevice, e); }