static awk_value_t *
do_pg_getcopydata(int nargs, awk_value_t *result)
{
PGconn *conn;
char *buffer;
int rc;
if (do_lint && (nargs > 1))
lintwarn(ext_id, _("pg_getcopydata: called with too many arguments"));
if (!(conn = find_handle(conns, 0))) {
set_ERRNO(_("pg_getcopydata called with unknown connection handle"));
RET_NULSTR;
}
buffer = NULL;
switch (rc = PQgetCopyData(conn, &buffer, FALSE)) {
/* case 0 can only happen if async is TRUE */
case -1: /* copy done */
make_null_string(result);
unset_ERRNO();
break;
case -2: /* error */
make_null_string(result);
{
const char *emsg = PQerrorMessage(conn);
if (emsg)
set_ERRNO(PQerrorMessage(conn));
else
set_ERRNO(_("PQgetCopyData failed, but no error message is available"));
}
break;
default: /* rc should be positive and equal # of bytes in row */
if (rc > 0) {
make_string_malloc(buffer, rc, result);
unset_ERRNO();
}
else {
/* this should not happen */
char buf[512];
make_null_string(result);
snprintf(buf, sizeof(buf),
_("PQgetCopyData returned invalid value %d: %s"),
rc, PQerrorMessage(conn));
set_ERRNO(buf);
}
}
if (buffer)
PQfreemem(buffer);
return result;
}
static void
api_unset_ERRNO(awk_ext_id_t id)
{
(void) id;
unset_ERRNO();
}
