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get_nfields
Langue: en
Version: 8 December 2008 (fedora - 05/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
get_nfields --- report the number of fields in a dirfileSYNOPSIS
#include <getdata.h>- unsigned int get_nfields(DIRFILE *dirfile);
DESCRIPTION
- The get_nfields() function queries a dirfile(5) database specified by dirfile and returns the number of fields defined in the database. Notably, this count does not include /META fields.
The dirfile argument must point to a valid DIRFILE object previously created by a call to dirfile_open(3).
RETURN VALUE
Upon successful completion, get_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 get_error(3). A descriptive error string for the last error encountered can be obtained from a call to get_error_string(3).
SEE ALSO
dirfile(5), dirfile_open(3), getdata(3), get_error(3), get_error_string(3), get_field_list(3), get_nfields_by_type(3), get_nmfields(3), get_nvectors(3)Contenus ©2006-2024 Benjamin Poulain
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