SWI-Prolog -- API-function Ssetenc

Documentation
- Reference manual
  - Foreign Language Interface
    - Foreign access to Prolog IO streams
      - Foreign stream encoding
        
        Ssetenc()
        
        ScheckBOM()
        
        SwriteBOM()
        
        Scanrepresent()
- Packages

Availability:C-language interface function

int Ssetenc(IOSTREAM *s, IOENC new_enc, IOENC *old_enc)

Set the encoding for s to new_enc and, if old_enc is not NULL, return the old encoding. This function may fail, returning -1 if the Scontrol_function() of the stream returns -1 on the SIO_SETENCODING request. On succcess it returns 0. If new_enc is ENC_OCTET the stream is switched to binary mode. Otherwise text mode is enabled.