mirror of
https://github.com/ton-blockchain/ton
synced 2025-02-13 19:52:18 +00:00
68 lines
2.1 KiB
C++
68 lines
2.1 KiB
C++
/*
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This file is part of TON Blockchain Library.
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TON Blockchain Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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TON Blockchain Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with TON Blockchain Library. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2017-2020 Telegram Systems LLP
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*/
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#pragma once
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#include "td/utils/buffer.h"
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#include "td/utils/Status.h"
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namespace td {
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class BlobViewImpl;
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class BlobView {
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public:
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BlobView();
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explicit BlobView(std::unique_ptr<BlobViewImpl> impl);
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BlobView(BlobView &&);
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BlobView &operator=(BlobView &&);
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~BlobView();
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td::Result<td::BufferSlice> to_buffer_slice();
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td::Result<td::Slice> view(td::MutableSlice slice, td::uint64 offset);
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td::Result<size_t> view_copy(td::MutableSlice slice, td::uint64 offset);
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td::Result<size_t> write(td::Slice data, td::uint64 offset);
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td::uint64 size();
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explicit operator bool() const {
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return bool(impl_);
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}
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private:
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std::unique_ptr<BlobViewImpl> impl_;
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};
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class BufferSliceBlobView {
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public:
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static BlobView create(td::BufferSlice slice);
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};
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class FileBlobView {
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public:
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static td::Result<BlobView> create(td::CSlice file_path, td::uint64 file_size = 0);
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};
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class FileNoCacheBlobView {
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public:
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static td::Result<BlobView> create(td::CSlice file_path, td::uint64 file_size = 0, bool may_write = false);
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};
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class FileMemoryMappingBlobView {
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public:
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static td::Result<BlobView> create(td::CSlice file_path, td::uint64 file_size = 0);
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};
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// For testing purposes
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struct CycicBlobView {
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static td::Result<td::BlobView> create(td::BufferSlice data, td::uint64 total_size);
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};
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} // namespace td
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