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#include "sqlitebackupprocessor.h"
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#include "sqlite3.h"
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using namespace CuteEntityManager;
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SqliteBackupProcessor::SqliteBackupProcessor(QSharedPointer<Database> database,
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QString destination) {
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this->database = database;
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this->destination = destination;
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}
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QSharedPointer<Database> SqliteBackupProcessor::getDatabase() const {
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return database;
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}
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void SqliteBackupProcessor::setDatabase(const QSharedPointer<Database> &value) {
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database = value;
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}
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QString SqliteBackupProcessor::getDestination() const {
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return destination;
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}
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void SqliteBackupProcessor::setDestination(const QString &value) {
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destination = value;
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}
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bool SqliteBackupProcessor::backup(QString fileName = "db.sqlite.bak") {
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bool state = false;
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bool save = true;
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QVariant v = this->database->getDatabase().driver()->handle();
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if ( v.isValid() && qstrcmp(v.typeName(), "sqlite3*") == 0 ) {
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// v.data() returns a pointer to the handle
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sqlite3 *handle = *static_cast<sqlite3 **>(v.data());
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if ( handle != 0 ) { // check that it is not NULL
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sqlite3 *pInMemory = handle;
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QByteArray array = QString(this->destination + "/" + fileName).toLocal8Bit();
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const char *zFilename = array.data();
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int rc; /* Function return code */
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sqlite3 *pFile; /* Database connection opened on zFilename */
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sqlite3_backup *pBackup; /* Backup object used to copy data */
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sqlite3 *pTo; /* Database to copy to (pFile or pInMemory) */
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sqlite3 *pFrom; /* Database to copy from (pFile or pInMemory) */
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/* Open the database file identified by zFilename. Exit early if this fails
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** for any reason. */
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rc = sqlite3_open( zFilename, &pFile );
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if ( rc == SQLITE_OK ) {
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/* If this is a 'load' operation (isSave==0), then data is copied
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** from the database file just opened to database pInMemory.
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** Otherwise, if this is a 'save' operation (isSave==1), then data
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** is copied from pInMemory to pFile. Set the variables pFrom and
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** pTo accordingly. */
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pFrom = ( save ? pInMemory : pFile);
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pTo = ( save ? pFile : pInMemory);
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/* Set up the backup procedure to copy from the "main" database of
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** connection pFile to the main database of connection pInMemory.
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** If something goes wrong, pBackup will be set to NULL and an error
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** code and message left in connection pTo.
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**
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** If the backup object is successfully created, call backup_step()
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** to copy data from pFile to pInMemory. Then call backup_finish()
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** to release resources associated with the pBackup object. If an
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** error occurred, then an error code and message will be left in
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** connection pTo. If no error occurred, then the error code belonging
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** to pTo is set to SQLITE_OK.
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*/
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pBackup = sqlite3_backup_init(pTo, "main", pFrom, "main");
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if ( pBackup ) {
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(void)sqlite3_backup_step(pBackup, -1);
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(void)sqlite3_backup_finish(pBackup);
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}
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rc = sqlite3_errcode(pTo);
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}
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/* Close the database connection opened on database file zFilename
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** and return the result of this function. */
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(void)sqlite3_close(pFile);
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if ( rc == SQLITE_OK ) {
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state = true;
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}
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}
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}
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return state;
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}
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