NAME¶

gd_fragment_index — retrieve the fragment containing a Dirfile field

SYNOPSIS¶

#include <getdata.h>

int gd_fragment_index(const DIRFILE *dirfile, const char *entry_name);

DESCRIPTION¶

The gd_fragment_index() function queries a dirfile(5) database specified by dirfile and returns the index number of the fragment defining the field or alias named entry_name.

This is one of the few GetData functions which does not resolve aliases: supplying the name of an alias as entry_name will return the index of the fragment containing the alias itself and not that of its target.

RETURN VALUE¶

Upon successful completion, gd_fragment_index() returns the requested fragment index, which is never negative. On error, gd_fragment_index() returns a negative-valued error code. Possible error codes are:

GD_E_BAD_CODE

The entry specified by entry_name was not found in the database.

GD_E_BAD_DIRFILE

The supplied dirfile was invalid.

The error code is also stored in the DIRFILE object and may be retrieved after this function returns by calling gd_error(3). A descriptive error string for the error may be obtained by calling gd_error_string(3).

HISTORY¶

The get_fragment_index() function appeared in GetData-0.5.0.

In GetData-0.7.0, this function was renamed to gd_fragment_index().

In GetData-0.10.0, the error return from this function changed from -1 to a negative-valued error code.

SEE ALSO¶

gd_open(3), gd_entry(3), gd_error(3), gd_error_string(3), gd_fragmentname(3), gd_parent_fragment(3), dirfile(5)