gd_parser_callback(3)
set the syntax error callback handler for a dirfile
SYNOPSIS
#include <getdata.h>
-
void gd_parser_callback(DIRFILE *dirfile, gd_parser_callback_t
sehandler, void *extra);
DESCRIPTION
The
gd_parser_callback()
function updates the syntax error callback function of the DIRFILE object
dirfile
to be
sehandler,
and the caller supplied extra pointer passed to the handler to be
extra,
discarding any syntax error handler and extra pointer which were previously
registered for this DIRFILE. If
sehandler
is NULL, the existing handler will be removed and the default behaviour (abort
on error) restored. See
gd_cbopen(3)
for a discussion on the requirements for the syntax handler.
Since parsing of an existing format specification occurs when the DIRFILE object
is created, before this function can be called, this function is only useful to
set or modify a callback function or its caller data before calling
gd_include(3),
which will invoke the callback function if syntax errors are found in the
included fragment.
This function always succeeds, and has no return value.
