FileExists check if file exists.

FromSQLInt32OrZero returns int from sql.NullInt32.

FromSQLStr returns string from sql.NullString.

MakeFileName prepares a file for file keeper.

MakeValidateFileName prepares/sanitizes a file for file keeper and validates.

NewErrNonRestorableUsage creates new error.

NewGueLoggerAdapter creates new instance.

ParamTrue - returns true if string param indicates true value.

SupportAudioExt checks if audio ext is supported.

ToSQLInt32 creates new sql int instance.

ToSQLStr creates new sql str instance.

WriteFile write file to disk.

ErrNonRestorableUsage indicates non restoreable usage error on any error system tries to restore users usage counter but on this error it does not.

GueLogAdapter implementation.