NAME

       gd_nmfields — report the number of metafields in a dirfile

SYNOPSIS

       #include <getdata.h>

       unsigned int gd_nmfields(DIRFILE *dirfile, const char *parent);

DESCRIPTION

       The  gd_nmfields() function queries a dirfile(5) database specified by dirfile and returns
       the number of metafields defined in the database for the parent field specified by parent.

       The dirfile argument must point to a valid DIRFILE object previously created by a call  to
       gd_open(3).

RETURN VALUE

       Upon successful completion, gd_nmfields() returns the number of defined metafields for the
       given parent.  On error, it returns zero and sets the dirfile error to  a  non-zero  error
       value.  Possible error values are:

       GD_E_BAD_CODE
               The supplied parent field code was not found, or referred to a metafield itself.

       GD_E_BAD_DIRFILE
               The supplied dirfile was invalid.

       The dirfile error may be retrieved by calling gd_error(3).  A descriptive error string for
       the last error encountered can be obtained from a call to gd_error_string(3).

SEE ALSO

       dirfile(5), gd_open(3), gd_error(3), gd_error_string(3), gd_mfield_list(3), gd_nfields(3),
       gd_nmfields_by_type(3), gd_nmvectors(3)