Atmosphere/libraries/libstratosphere/include/stratosphere/kvdb/kvdb_archive.hpp

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/*
* Copyright (c) 2018-2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "kvdb_auto_buffer.hpp"
namespace ams::kvdb {
/* Functionality for parsing/generating a key value archive. */
class ArchiveReader {
private:
AutoBuffer &buffer;
size_t offset;
public:
ArchiveReader(AutoBuffer &b) : buffer(b), offset(0) { /* ... */ }
private:
Result Peek(void *dst, size_t size);
Result Read(void *dst, size_t size);
public:
Result ReadEntryCount(size_t *out);
Result GetEntrySize(size_t *out_key_size, size_t *out_value_size);
Result ReadEntry(void *out_key, size_t key_size, void *out_value, size_t value_size);
};
class ArchiveWriter {
private:
AutoBuffer &buffer;
size_t offset;
public:
ArchiveWriter(AutoBuffer &b) : buffer(b), offset(0) { /* ... */ }
private:
Result Write(const void *src, size_t size);
public:
void WriteHeader(size_t entry_count);
void WriteEntry(const void *key, size_t key_size, const void *value, size_t value_size);
};
class ArchiveSizeHelper {
private:
size_t size;
public:
ArchiveSizeHelper();
void AddEntry(size_t key_size, size_t value_size);
size_t GetSize() const {
return this->size;
}
};
}