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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "printing/metafile.h"
#include <stdint.h>
#include <vector>
#include "base/files/file.h"
#include "base/logging.h"
#include "base/memory/read_only_shared_memory_region.h"
#include "base/numerics/safe_conversions.h"
#include "build/build_config.h"
namespace printing {
MetafilePlayer::MetafilePlayer() = default;
MetafilePlayer::~MetafilePlayer() = default;
Metafile::Metafile() = default;
Metafile::~Metafile() = default;
bool Metafile::GetDataAsVector(std::vector<char>* buffer) const {
buffer->resize(GetDataSize());
if (buffer->empty())
return false;
return GetData(&buffer->front(),
base::checked_cast<uint32_t>(buffer->size()));
}
base::MappedReadOnlyRegion Metafile::GetDataAsSharedMemoryRegion() const {
uint32_t data_size = GetDataSize();
if (data_size == 0) {
DLOG(ERROR) << "Metafile has no data to map to a region.";
return base::MappedReadOnlyRegion();
}
base::MappedReadOnlyRegion region_mapping =
base::ReadOnlySharedMemoryRegion::Create(data_size);
if (!region_mapping.IsValid()) {
DLOG(ERROR) << "Failure mapping metafile data into region for size "
<< data_size;
return base::MappedReadOnlyRegion();
}
if (!GetData(region_mapping.mapping.memory(), data_size)) {
DLOG(ERROR) << "Failure getting metafile data into region";
return base::MappedReadOnlyRegion();
}
return region_mapping;
}
#if !BUILDFLAG(IS_ANDROID)
bool Metafile::SaveTo(base::File* file) const {
if (!file->IsValid())
return false;
std::vector<char> buffer;
if (!GetDataAsVector(&buffer))
return false;
if (!file->WriteAtCurrentPosAndCheck(
base::as_bytes(base::make_span(buffer)))) {
DLOG(ERROR) << "Failed to save file.";
return false;
}
return true;
}
#endif // !BUILDFLAG(IS_ANDROID)
} // namespace printing
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