get_nmfields (3) Linux Manual Page
get_nmfields — report the number of metafields in a dirfile
Synopsis
#include <getdata.h>- unsigned int get_nmfields(DIRFILE *dirfile, const char *parent);
Description
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_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 get_error(3). A descriptive error string for the last error encountered can be obtained from a call to get_error_string(3).