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// Copyright 2016 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
/*
* Copyright 2011 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/cbc_ean8.h"
#include <memory>
#include "fxbarcode/oned/BC_OnedEAN8Writer.h"
#include "third_party/base/ptr_util.h"
CBC_EAN8::CBC_EAN8() : CBC_OneCode(pdfium::MakeUnique<CBC_OnedEAN8Writer>()) {}
CBC_EAN8::~CBC_EAN8() {}
WideString CBC_EAN8::Preprocess(const WideStringView& contents) {
auto* pWriter = GetOnedEAN8Writer();
WideString encodeContents = pWriter->FilterContents(contents);
int32_t length = encodeContents.GetLength();
if (length <= 7) {
for (int32_t i = 0; i < 7 - length; i++)
encodeContents = wchar_t('0') + encodeContents;
ByteString byteString = encodeContents.UTF8Encode();
int32_t checksum = pWriter->CalcChecksum(byteString);
encodeContents += wchar_t(checksum - 0 + '0');
}
if (length > 8)
encodeContents = encodeContents.Left(8);
return encodeContents;
}
bool CBC_EAN8::Encode(const WideStringView& contents) {
if (contents.IsEmpty())
return false;
BCFORMAT format = BCFORMAT_EAN_8;
int32_t outWidth = 0;
int32_t outHeight = 0;
m_renderContents = Preprocess(contents);
ByteString byteString = m_renderContents.UTF8Encode();
auto* pWriter = GetOnedEAN8Writer();
std::unique_ptr<uint8_t, FxFreeDeleter> data(
pWriter->Encode(byteString, format, outWidth, outHeight));
return data && pWriter->RenderResult(m_renderContents.AsStringView(),
data.get(), outWidth);
}
bool CBC_EAN8::RenderDevice(CFX_RenderDevice* device,
const CFX_Matrix* matrix) {
return GetOnedEAN8Writer()->RenderDeviceResult(
device, matrix, m_renderContents.AsStringView());
}
BC_TYPE CBC_EAN8::GetType() {
return BC_EAN8;
}
CBC_OnedEAN8Writer* CBC_EAN8::GetOnedEAN8Writer() {
return static_cast<CBC_OnedEAN8Writer*>(m_pBCWriter.get());
}
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