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#include <mbgl/util/sqlite3.hpp>
#include <sqlite3.h>
#include <cassert>
namespace mapbox {
namespace sqlite {
Database::Database(const std::string &filename, int flags) {
const int err = sqlite3_open_v2(filename.c_str(), &db, flags, nullptr);
if (err != SQLITE_OK) {
Exception ex { err, sqlite3_errmsg(db) };
db = nullptr;
throw ex;
}
}
Database::Database(Database &&other) {
*this = std::move(other);
}
Database &Database::operator=(Database &&other) {
std::swap(db, other.db);
return *this;
}
Database::~Database() {
if (db) {
const int err = sqlite3_close(db);
if (err != SQLITE_OK) {
throw Exception { err, sqlite3_errmsg(db) };
}
}
}
Database::operator bool() const {
return db != nullptr;
}
void Database::exec(const std::string &sql) {
assert(db);
char *msg = nullptr;
const int err = sqlite3_exec(db, sql.c_str(), nullptr, nullptr, &msg);
if (msg) {
Exception ex { err, msg };
sqlite3_free(msg);
throw ex;
} else if (err != SQLITE_OK) {
throw Exception { err, sqlite3_errmsg(db) };
}
}
Statement Database::prepare(const char *query) {
assert(db);
return std::move(Statement(db, query));
}
Statement::Statement(sqlite3 *db, const char *sql) {
const int err = sqlite3_prepare_v2(db, sql, -1, &stmt, nullptr);
if (err != SQLITE_OK) {
stmt = nullptr;
throw Exception { err, sqlite3_errmsg(db) };
}
}
#define CHECK_SQLITE_OK(err) \
if (err != SQLITE_OK) { \
throw Exception { err, sqlite3_errmsg(sqlite3_db_handle(stmt)) }; \
}
Statement::Statement(Statement &&other) {
*this = std::move(other);
}
Statement &Statement::operator=(Statement &&other) {
std::swap(stmt, other.stmt);
return *this;
}
Statement::~Statement() {
if (stmt) {
const int err = sqlite3_finalize(stmt);
CHECK_SQLITE_OK(err)
}
}
Statement::operator bool() const {
return stmt != nullptr;
}
#define BIND_3(type, value) \
assert(stmt); \
const int err = sqlite3_bind_##type(stmt, offset, value); \
CHECK_SQLITE_OK(err)
#define BIND_5(type, value, length, param) \
assert(stmt); \
const int err = sqlite3_bind_##type(stmt, offset, value, length, param); \
CHECK_SQLITE_OK(err)
template <> void Statement::bind(int offset, int value) {
BIND_3(int, value)
}
template <> void Statement::bind(int offset, int64_t value) {
BIND_3(int64, value)
}
template <> void Statement::bind(int offset, double value) {
BIND_3(double, value)
}
template <> void Statement::bind(int offset, bool value) {
BIND_3(int, value)
}
template <> void Statement::bind(int offset, const char *value) {
BIND_5(text, value, -1, nullptr)
}
void Statement::bind(int offset, const std::string &value, bool retain) {
BIND_5(blob, value.data(), int(value.size()), retain ? SQLITE_TRANSIENT : SQLITE_STATIC)
}
bool Statement::run() {
assert(stmt);
const int err = sqlite3_step(stmt);
if (err == SQLITE_DONE) {
return false;
} else if (err == SQLITE_ROW) {
return true;
} else {
throw std::runtime_error("failed to run statement");
}
}
template <> int Statement::get(int offset) {
assert(stmt);
return sqlite3_column_int(stmt, offset);
}
template <> int64_t Statement::get(int offset) {
assert(stmt);
return sqlite3_column_int64(stmt, offset);
}
template <> double Statement::get(int offset) {
assert(stmt);
return sqlite3_column_double(stmt, offset);
}
template <> std::string Statement::get(int offset) {
assert(stmt);
return {
reinterpret_cast<const char *>(sqlite3_column_blob(stmt, offset)),
size_t(sqlite3_column_bytes(stmt, offset))
};
}
void Statement::reset() {
assert(stmt);
sqlite3_reset(stmt);
}
}
}
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