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#ifndef DATA_H_C4AEC3DD
#define DATA_H_C4AEC3DD
#include "verb.h"
#include <sqlite3.h>
#include <stdexcept>
namespace verbly {
class data {
private:
sqlite3* ppdb;
public:
class verb_query {
public:
const static int unlimited = -1;
private:
const data& database;
int m_limit = unlimited;
bool m_random = false;
public:
verb_query(const data& database) : database(database)
{
}
verb_query& limit(int m_limit)
{
if ((m_limit > 0) || (m_limit == unlimited))
{
this->m_limit = m_limit;
}
return *this;
}
verb_query& random(bool m_random)
{
this->m_random = m_random;
return *this;
}
std::list<verb> run() const
{
std::stringstream construct;
construct << "SELECT verb_id, infinitive, past_tense, past_participle, ing_form, s_form FROM verbs";
if (m_random)
{
construct << " ORDER BY RANDOM()";
}
if (m_limit != unlimited)
{
construct << " LIMIT " << m_limit;
}
sqlite3_stmt* ppstmt;
std::string query = construct.str();
if (sqlite3_prepare_v2(database.ppdb, query.c_str(), query.length(), &ppstmt, NULL) != SQLITE_OK)
{
throw std::runtime_error(sqlite3_errmsg(database.ppdb));
}
std::list<verb> output;
while (sqlite3_step(ppstmt) == SQLITE_ROW)
{
verb tnc {sqlite3_column_int(ppstmt, 0)};
tnc.infinitive = std::string(reinterpret_cast<const char*>(sqlite3_column_text(ppstmt, 1)));
tnc.past_tense = std::string(reinterpret_cast<const char*>(sqlite3_column_text(ppstmt, 2)));
tnc.past_participle = std::string(reinterpret_cast<const char*>(sqlite3_column_text(ppstmt, 3)));
tnc.ing_form = std::string(reinterpret_cast<const char*>(sqlite3_column_text(ppstmt, 4)));
tnc.s_form = std::string(reinterpret_cast<const char*>(sqlite3_column_text(ppstmt, 5)));
output.push_back(tnc);
}
sqlite3_finalize(ppstmt);
return output;
}
};
class adjective_query {
public:
const static int unlimited = -1;
private:
const data& database;
int m_limit = unlimited;
bool m_random = false;
public:
adjective_query(const data& database) : database(database)
{
}
adjective_query& limit(int m_limit)
{
if ((m_limit > 0) || (m_limit == unlimited))
{
this->m_limit = m_limit;
}
return *this;
}
adjective_query& random(bool m_random)
{
this->m_random = m_random;
return *this;
}
std::list<adjective> run() const
{
std::stringstream construct;
construct << "SELECT adjective_id, adjective FROM adjectives";
if (m_random)
{
construct << " ORDER BY RANDOM()";
}
if (m_limit != unlimited)
{
construct << " LIMIT " << m_limit;
}
sqlite3_stmt* ppstmt;
std::string query = construct.str();
if (sqlite3_prepare_v2(database.ppdb, query.c_str(), query.length(), &ppstmt, NULL) != SQLITE_OK)
{
throw std::runtime_error(sqlite3_errmsg(database.ppdb));
}
std::list<adjective> output;
while (sqlite3_step(ppstmt) == SQLITE_ROW)
{
adjective tnc {sqlite3_column_int(ppstmt, 0)};
tnc.value = std::string(reinterpret_cast<const char*>(sqlite3_column_text(ppstmt, 1)));
output.push_back(tnc);
}
sqlite3_finalize(ppstmt);
return output;
}
};
data(std::string datafile)
{
if (sqlite3_open_v2(datafile.c_str(), &ppdb, SQLITE_OPEN_READONLY, NULL) != SQLITE_OK)
{
throw std::invalid_argument(sqlite3_errmsg(ppdb));
}
}
data(const data& other) = delete;
data& operator=(const data& other) = delete;
data(data&& other)
{
ppdb = other.ppdb;
}
data& operator=(data&& other)
{
ppdb = other.ppdb;
return *this;
}
~data()
{
sqlite3_close_v2(ppdb);
}
verb_query verbs() const
{
return verb_query(*this);
}
adjective_query adjectives() const
{
return adjective_query(*this);
}
};
};
#endif /* end of include guard: DATA_H_C4AEC3DD */
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