grn_ts_bool
grn_ts_str_is_name(grn_ts_str str)
{
if (!str.size) {
return GRN_FALSE;
}
return grn_ts_str_is_name_prefix(str);
}
/* grn_ts_writer_parse() parses output expressions. */
static grn_rc
grn_ts_writer_parse(grn_ctx *ctx, grn_ts_writer *writer,
grn_obj *table, grn_ts_str str)
{
grn_rc rc;
grn_ts_str rest = str;
rc = grn_ts_expr_parser_open(ctx, table, &writer->parser);
for ( ; ; ) {
grn_ts_str first = { NULL, 0 };
rc = grn_ts_expr_parser_split(ctx, writer->parser, rest, &first, &rest);
if (rc != GRN_SUCCESS) {
return (rc == GRN_END_OF_DATA) ? GRN_SUCCESS : rc;
}
if ((first.ptr[first.size - 1] == '*') &&
grn_ts_str_is_name_prefix((grn_ts_str){ first.ptr, first.size - 1 })) {
rc = grn_ts_writer_expand(ctx, writer, table, first);
if (rc != GRN_SUCCESS) {
return rc;
}
} else if (grn_ts_str_is_key_name(first) &&
!grn_ts_table_has_key(ctx, table)) {
/*
* Skip _key if the table has no _key, because the default output_columns
* option contains _key.
*/
GRN_TS_DEBUG("skip \"_key\" because the table has no _key");
} else {
rc = grn_vector_add_element(ctx, &writer->name_buf,
first.ptr, first.size, 0, GRN_DB_TEXT);
if (rc != GRN_SUCCESS) {
return rc;
}
}
}
return GRN_SUCCESS;
}
