gd_nfields(3) GETDATA gd_nfields(3)
NAME
gd_nfields -- report the number of fields in a dirfile
SYNOPSIS
#include <getdata.h>
unsigned int gd_nfields(DIRFILE *dirfile);
DESCRIPTION
The gd_nfields() function queries a dirfile(5) database specified by dirfile and returns the number of fields defined in the database. No-
tably, this count does not include /META fields.
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_nfields() returns the number of defined fields in the dirfile. On error, it returns zero and sets the
dirfile error to a non-zero error value. Possible error values are:
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_field_list(3), gd_nfields_by_type(3), gd_nmfields(3), gd_nvectors(3)
Version 0.7.0 16 July 2010 gd_nfields(3)