// Copyright 2017 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.
|
|
#include "testing/fake_file_access.h"
|
|
#include <algorithm>
|
#include <set>
|
#include <utility>
|
#include <vector>
|
|
#include "core/fxcrt/fx_system.h"
|
#include "third_party/base/ptr_util.h"
|
|
namespace {
|
|
class FileAccessWrapper : public FPDF_FILEACCESS {
|
public:
|
explicit FileAccessWrapper(FakeFileAccess* simulator)
|
: simulator_(simulator) {
|
m_FileLen = simulator_->GetFileSize();
|
m_GetBlock = &GetBlockImpl;
|
m_Param = this;
|
}
|
|
static int GetBlockImpl(void* param,
|
unsigned long position,
|
unsigned char* pBuf,
|
unsigned long size) {
|
return static_cast<FileAccessWrapper*>(param)->simulator_->GetBlock(
|
position, pBuf, size);
|
}
|
|
private:
|
fxcrt::UnownedPtr<FakeFileAccess> simulator_;
|
};
|
|
class FileAvailImpl : public FX_FILEAVAIL {
|
public:
|
explicit FileAvailImpl(FakeFileAccess* simulator) : simulator_(simulator) {
|
version = 1;
|
IsDataAvail = &IsDataAvailImpl;
|
}
|
|
static FPDF_BOOL IsDataAvailImpl(FX_FILEAVAIL* pThis,
|
size_t offset,
|
size_t size) {
|
return static_cast<FileAvailImpl*>(pThis)->simulator_->IsDataAvail(offset,
|
size);
|
}
|
|
private:
|
fxcrt::UnownedPtr<FakeFileAccess> simulator_;
|
};
|
|
class DownloadHintsImpl : public FX_DOWNLOADHINTS {
|
public:
|
explicit DownloadHintsImpl(FakeFileAccess* simulator)
|
: simulator_(simulator) {
|
version = 1;
|
AddSegment = &AddSegmentImpl;
|
}
|
|
static void AddSegmentImpl(FX_DOWNLOADHINTS* pThis,
|
size_t offset,
|
size_t size) {
|
return static_cast<DownloadHintsImpl*>(pThis)->simulator_->AddSegment(
|
offset, size);
|
}
|
|
private:
|
fxcrt::UnownedPtr<FakeFileAccess> simulator_;
|
};
|
|
} // namespace
|
|
FakeFileAccess::FakeFileAccess(FPDF_FILEACCESS* file_access)
|
: file_access_(file_access),
|
file_access_wrapper_(pdfium::MakeUnique<FileAccessWrapper>(this)),
|
file_avail_(pdfium::MakeUnique<FileAvailImpl>(this)),
|
download_hints_(pdfium::MakeUnique<DownloadHintsImpl>(this)) {
|
ASSERT(file_access_);
|
}
|
|
FakeFileAccess::~FakeFileAccess() {}
|
|
FPDF_BOOL FakeFileAccess::IsDataAvail(size_t offset, size_t size) const {
|
return available_data_.Contains(RangeSet::Range(offset, offset + size));
|
}
|
|
void FakeFileAccess::AddSegment(size_t offset, size_t size) {
|
requested_data_.Union(RangeSet::Range(offset, offset + size));
|
}
|
|
unsigned long FakeFileAccess::GetFileSize() {
|
return file_access_->m_FileLen;
|
}
|
|
int FakeFileAccess::GetBlock(unsigned long position,
|
unsigned char* pBuf,
|
unsigned long size) {
|
if (!IsDataAvail(static_cast<size_t>(position), static_cast<size_t>(size)))
|
return false;
|
return file_access_->m_GetBlock(file_access_->m_Param, position, pBuf, size);
|
}
|
|
void FakeFileAccess::SetRequestedDataAvailable() {
|
available_data_.Union(requested_data_);
|
requested_data_.Clear();
|
}
|
|
void FakeFileAccess::SetWholeFileAvailable() {
|
available_data_.Union(RangeSet::Range(0, static_cast<size_t>(GetFileSize())));
|
requested_data_.Clear();
|
}
|
