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