Section 614. Care and support of civil prisoner

A person arrested, by
  virtue of an order of arrest, in an action or special proceeding brought
  in a court of record; or of an execution issued upon a judgment rendered
  in a court of record; or surrendered in exoneration of his bail; must be
  safely kept in custody, in the manner prescribed by law, and, except  as
  herein  otherwise  provided,  at his own expense, until he satisfies the
  judgment rendered against him, or is discharged according to law. In any
  county, if a prisoner, actually confined in jail, makes oath before  the
  sheriff,  jailer, or deputy-jailer, that he is unable to support himself
  during his imprisonment, his support is a county charge.