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_nm‐
       fields_by_type(3), gd_nmvectors(3)

Version 0.7.0                                     16 July 2010                                    gd_nmfields(3)