LotroDat/Source/Database.cpp

//
// Created by Иван_Архипов on 17.11.2017.
//
#define UNICODE
#define _UNICODE 

#include "Database.h"
#include "Common/DatException.h"
#include "BinaryData.h"
#include "Common/CommonFunctions.h"

#include <cstring>

namespace LOTRO_DAT {

    Database::Database() {
        db_ = nullptr;
    }

    Database::Database(const std::string &filename) {
        InitDatabase(filename.c_str());
    }

    Database::~Database() {
        ExecSql("COMMIT TRANSACTION");

        if (db_ != nullptr) {
            sqlite3_finalize(insert_request_);
            sqlite3_close(db_);
        }
    }

    void Database::InitDatabase(const std::string &filename) {
        if (sqlite3_open(filename.c_str(), &db_) != SQLITE_OK) {
            sqlite3_close(db_);
            throw DatException("Bad Database::InitDatabase() - sqlite3_open returned an error..."
                    , DATABASE_EXCEPTION);
        }

		ExecSql("PRAGMA synchronous = OFF");
		ExecSql("PRAGMA count_changes = OFF");
		ExecSql("PRAGMA journal_mode = MEMORY");
		ExecSql("PRAGMA temp_store = MEMORY");
		ExecSql("PRAGMA encoding = \"UTF-8\";");

        ExecSql(CreateTableCommand_);

		sqlite3_prepare_v2(db_, InsertFileCommand_.c_str(), InsertFileCommand_.length(), &insert_request_, nullptr);

        ExecSql("BEGIN TRANSACTION");
    }

	void Database::ExecSql(const std::string &sql) {
		char *error;
		if (sqlite3_exec(db_, sql.c_str(), nullptr, nullptr, &error) != SQLITE_OK) {
			fprintf(stderr, "SQLite3 error: %s\n", sqlite3_errmsg(db_));
			throw DatException((std::string("Bad Database::ExecSql() - unable to perform request")
				+ std::string(sql)).c_str(), DATABASE_EXCEPTION);
		}
	}

    void Database::PushFile(const BinaryData &binary_data, const std::u16string &text_data, const std::string &options) {
        sqlite3_bind_blob(insert_request_, 1, binary_data.data(), binary_data.size(), SQLITE_TRANSIENT);
        sqlite3_bind_text16(insert_request_, 2, text_data.c_str(), -1, SQLITE_TRANSIENT);
        sqlite3_bind_text(insert_request_, 3, options.c_str(), -1, SQLITE_TRANSIENT);

        if (sqlite3_step(insert_request_) != SQLITE_DONE) {
            fprintf(stderr, "SQLite3 error: %s\n", sqlite3_errmsg(db_));
            throw DatException((std::string("Bad Database::PushTextFile() - unable to perform push operation")).c_str(),
                               DATABASE_EXCEPTION);
        }

        sqlite3_reset(insert_request_);
    }
}