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// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of the Andrey N. Sabelnikov nor the
// names of its contributors may be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
#include "byte_slice.h"
#include "byte_stream.h"
#include "misc_log_ex.h"
#include "span.h"
#include "storages/portable_storage.h"
#include "storages/portable_storage_to_json.h"
#include "storages/portable_storage_from_json.h"
#include "storages/portable_storage_to_bin.h"
#include "storages/portable_storage_from_bin.h"
#include <boost/utility/string_ref.hpp>
#include <string>
#include <sstream>
namespace epee
{
namespace serialization
{
bool portable_storage::store_to_binary(byte_slice& target, const std::size_t initial_buffer_size)
{
TRY_ENTRY();
byte_stream ss;
ss.reserve(initial_buffer_size);
storage_block_header sbh{};
sbh.m_signature_a = SWAP32LE(PORTABLE_STORAGE_SIGNATUREA);
sbh.m_signature_b = SWAP32LE(PORTABLE_STORAGE_SIGNATUREB);
sbh.m_ver = PORTABLE_STORAGE_FORMAT_VER;
ss.write(epee::as_byte_span(sbh));
pack_entry_to_buff(ss, m_root);
target = epee::byte_slice{std::move(ss)};
return true;
CATCH_ENTRY("portable_storage::store_to_binary", false)
}
bool portable_storage::dump_as_json(std::string& buff, size_t indent, bool insert_newlines)
{
TRY_ENTRY();
std::stringstream ss;
epee::serialization::dump_as_json(ss, m_root, indent, insert_newlines);
buff = ss.str();
return true;
CATCH_ENTRY("portable_storage::dump_as_json", false)
}
bool portable_storage::load_from_json(const std::string& source)
{
TRY_ENTRY();
return json::load_from_json(source, *this);
CATCH_ENTRY("portable_storage::load_from_json", false)
}
bool portable_storage::load_from_binary(const std::string& target, const limits_t *limits)
{
return load_from_binary(epee::strspan<uint8_t>(target), limits);
}
bool portable_storage::load_from_binary(const epee::span<const uint8_t> source, const limits_t *limits)
{
m_root.m_entries.clear();
if(source.size() < sizeof(storage_block_header))
{
LOG_ERROR("portable_storage: wrong binary format, packet size = " << source.size() << " less than expected sizeof(storage_block_header)=" << sizeof(storage_block_header));
return false;
}
storage_block_header* pbuff = (storage_block_header*)source.data();
if(pbuff->m_signature_a != SWAP32LE(PORTABLE_STORAGE_SIGNATUREA) ||
pbuff->m_signature_b != SWAP32LE(PORTABLE_STORAGE_SIGNATUREB)
)
{
LOG_ERROR("portable_storage: wrong binary format - signature mismatch");
return false;
}
if(pbuff->m_ver != PORTABLE_STORAGE_FORMAT_VER)
{
LOG_ERROR("portable_storage: wrong binary format - unknown format ver = " << pbuff->m_ver);
return false;
}
TRY_ENTRY();
throwable_buffer_reader buf_reader(source.data()+sizeof(storage_block_header), source.size()-sizeof(storage_block_header));
if (limits)
buf_reader.set_limits(limits->n_objects, limits->n_fields, limits->n_strings);
buf_reader.read(m_root);
return true;//TODO:
CATCH_ENTRY("portable_storage::load_from_binary", false);
}
hsection portable_storage::open_section(const std::string& section_name, hsection hparent_section, bool create_if_notexist)
{
TRY_ENTRY();
hparent_section = hparent_section ? hparent_section:&m_root;
storage_entry* pentry = find_storage_entry(section_name, hparent_section);
if(!pentry)
{
if(!create_if_notexist)
return nullptr;
return insert_new_section(section_name, hparent_section);
}
CHECK_AND_ASSERT(pentry , nullptr);
//check that section_entry we find is real "CSSection"
if(pentry->type() != typeid(section))
{
if(create_if_notexist)
*pentry = storage_entry(section());//replace
else
return nullptr;
}
return &boost::get<section>(*pentry);
CATCH_ENTRY("portable_storage::open_section", nullptr);
}
bool portable_storage::get_value(const std::string& value_name, storage_entry& val, hsection hparent_section)
{
//TRY_ENTRY();
if(!hparent_section) hparent_section = &m_root;
storage_entry* pentry = find_storage_entry(value_name, hparent_section);
if(!pentry)
return false;
val = *pentry;
return true;
//CATCH_ENTRY("portable_storage::template<>get_value", false);
}
storage_entry* portable_storage::find_storage_entry(const std::string& pentry_name, hsection psection)
{
TRY_ENTRY();
CHECK_AND_ASSERT(psection, nullptr);
auto it = psection->m_entries.find(pentry_name);
if(it == psection->m_entries.end())
return nullptr;
return &it->second;
CATCH_ENTRY("portable_storage::find_storage_entry", nullptr);
}
hsection portable_storage::insert_new_section(const std::string& pentry_name, hsection psection)
{
TRY_ENTRY();
storage_entry* pse = insert_new_entry_get_storage_entry(pentry_name, psection, section());
if(!pse) return nullptr;
return &boost::get<section>(*pse);
CATCH_ENTRY("portable_storage::insert_new_section", nullptr);
}
harray portable_storage::get_first_section(const std::string& sec_name, hsection& h_child_section, hsection hparent_section)
{
TRY_ENTRY();
if(!hparent_section) hparent_section = &m_root;
storage_entry* pentry = find_storage_entry(sec_name, hparent_section);
if(!pentry)
return nullptr;
if(pentry->type() != typeid(array_entry))
return nullptr;
array_entry& ar_entry = boost::get<array_entry>(*pentry);
if(ar_entry.type() != typeid(array_entry_t<section>))
return nullptr;
array_entry_t<section>& sec_array = boost::get<array_entry_t<section>>(ar_entry);
section* psec = sec_array.get_first_val();
if(!psec)
return nullptr;
h_child_section = psec;
return &ar_entry;
CATCH_ENTRY("portable_storage::get_first_section", nullptr);
}
bool portable_storage::get_next_section(harray hsec_array, hsection& h_child_section)
{
TRY_ENTRY();
CHECK_AND_ASSERT(hsec_array, false);
if(hsec_array->type() != typeid(array_entry_t<section>))
return false;
array_entry_t<section>& sec_array = boost::get<array_entry_t<section>>(*hsec_array);
h_child_section = sec_array.get_next_val();
if(!h_child_section)
return false;
return true;
CATCH_ENTRY("portable_storage::get_next_section", false);
}
harray portable_storage::insert_first_section(const std::string& sec_name, hsection& hinserted_childsection, hsection hparent_section)
{
TRY_ENTRY();
if(!hparent_section) hparent_section = &m_root;
storage_entry* pentry = find_storage_entry(sec_name, hparent_section);
if(!pentry)
{
pentry = insert_new_entry_get_storage_entry(sec_name, hparent_section, array_entry(array_entry_t<section>()));
if(!pentry)
return nullptr;
}
if(pentry->type() != typeid(array_entry))
*pentry = storage_entry(array_entry(array_entry_t<section>()));
array_entry& ar_entry = boost::get<array_entry>(*pentry);
if(ar_entry.type() != typeid(array_entry_t<section>))
ar_entry = array_entry(array_entry_t<section>());
array_entry_t<section>& sec_array = boost::get<array_entry_t<section>>(ar_entry);
hinserted_childsection = &sec_array.insert_first_val(section());
return &ar_entry;
CATCH_ENTRY("portable_storage::insert_first_section", nullptr);
}
bool portable_storage::insert_next_section(harray hsec_array, hsection& hinserted_childsection)
{
TRY_ENTRY();
CHECK_AND_ASSERT(hsec_array, false);
CHECK_AND_ASSERT_MES(hsec_array->type() == typeid(array_entry_t<section>),
false, "unexpected type(not 'section') in insert_next_section, type: " << hsec_array->type().name());
array_entry_t<section>& sec_array = boost::get<array_entry_t<section>>(*hsec_array);
hinserted_childsection = &sec_array.insert_next_value(section());
return true;
CATCH_ENTRY("portable_storage::insert_next_section", false);
}
}
}
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