| // Copyright 2018 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 |
| |
| #include "fxbarcode/cbc_eancode.h" |
| |
| #include <utility> |
| |
| #include "fxbarcode/oned/BC_OnedEANWriter.h" |
| |
| CBC_EANCode::CBC_EANCode(std::unique_ptr<CBC_OneDimEANWriter> pWriter) |
| : CBC_OneCode(std::move(pWriter)) {} |
| |
| CBC_EANCode::~CBC_EANCode() = default; |
| |
| CBC_OneDimEANWriter* CBC_EANCode::GetOneDimEANWriter() { |
| return static_cast<CBC_OneDimEANWriter*>(m_pBCWriter.get()); |
| } |
| |
| bool CBC_EANCode::Encode(WideStringView contents) { |
| if (contents.IsEmpty() || contents.GetLength() > kMaxInputLengthBytes) |
| return false; |
| |
| BCFORMAT format = GetFormat(); |
| int32_t out_width = 0; |
| int32_t out_height = 0; |
| m_renderContents = Preprocess(contents); |
| ByteString str = m_renderContents.ToUTF8(); |
| auto* pWriter = GetOneDimEANWriter(); |
| pWriter->InitEANWriter(); |
| std::unique_ptr<uint8_t, FxFreeDeleter> data( |
| pWriter->Encode(str, format, out_width, out_height)); |
| return data && pWriter->RenderResult(m_renderContents.AsStringView(), |
| data.get(), out_width); |
| } |
| |
| bool CBC_EANCode::RenderDevice(CFX_RenderDevice* device, |
| const CFX_Matrix* matrix) { |
| return GetOneDimEANWriter()->RenderDeviceResult( |
| device, matrix, m_renderContents.AsStringView()); |
| } |
| |
| WideString CBC_EANCode::Preprocess(WideStringView contents) { |
| auto* pWriter = GetOneDimEANWriter(); |
| WideString encoded_contents = pWriter->FilterContents(contents); |
| size_t length = encoded_contents.GetLength(); |
| size_t max_length = GetMaxLength(); |
| if (length <= max_length) { |
| for (size_t i = 0; i < max_length - length; i++) |
| encoded_contents.InsertAtFront(L'0'); |
| |
| ByteString str = encoded_contents.ToUTF8(); |
| int32_t checksum = pWriter->CalcChecksum(str); |
| str += '0' + checksum; |
| encoded_contents = WideString::FromUTF8(str.AsStringView()); |
| } else { |
| encoded_contents = encoded_contents.Left(max_length + 1); |
| } |
| |
| return encoded_contents; |
| } |