NAME

       gd_fragment_namespace — report or change the root namespace of a fragment of a dirfile database

SYNOPSIS

       #include <getdata.h>

       const char *gd_fragment_namespace(DIRFILE *dirfile, int fragment_index, char *new_namespace);

DESCRIPTION

       The  gd_fragment_namespace() function can be used to update and/or query the root namespace of a fragment
       in the dirfile(5) database specified by dirfile.

       If new_namespace is NULL, then the current root namespace of the fragment indexed  by  fragment_index  is
       returned.   If new_namespace is non-NULL, then the root namespace is first changed to the string provided
       before being reported.  The new namespace may optionally contain a single, trailing dot (.).   To  remove
       an existing root namespace, pass a pointer to the empty string ("") as new_namespace.

       The  root namespace of the root format file (the one indexed by fragment_index=0) may not be changed.  It
       is always the empty string.

       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_fragment_namespace() returns a non-NULL pointer to a read-only string con‐
       taining the current root namespace of the fragment  specified.   This  will  be  a  copy  of  the  string
       new_namespace,  if  that parameter was non-NULL.  If the fragment's root namespace is empty, a pointer to
       the empty string ("") will be returned.

       On error, this function returns NULL and sets the dirfile error to  a  non-zero  error  value.   Possible
       dirfile error values are:

       GD_E_ACCMODE
               The dirfile was opened read-only.

       GD_E_ALLOC
               A memory allocation error occurred.

       GD_E_BAD_CODE
               The supplied new_fragment was not a valid namespace.

       GD_E_BAD_DIRFILE
               The supplied dirfile was invalid.

       GD_E_BAD_INDEX
               The  supplied  index was out of range.  This error will also be returned if an attempt is made to
               change the root namespace of the root format file (fragment_index zero).

       GD_E_DUPLICATE
               Attempting to change the root namespace resulted in a duplicated field definition.

       GD_E_PROTECTED
               The protection level of the specified fragment prohibits metadata changes.

       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).

HISTORY

       The gd_fragment_namespace() function appeared in GetData-0.10.0.

SEE ALSO

       gd_alter_affixes(3), gd_include_ns(3), gd_open(3), dirfile(5), dirfile-format(5)

Version 0.10.0                                  25 December 2016                        gd_fragment_namespace(3)