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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "BLI_string_utf8.h"
#include "node_function_util.hh"
namespace blender::nodes {
static void fn_node_string_substring_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::String>("String");
b.add_input<decl::Int>("Position");
b.add_input<decl::Int>("Length").min(0);
b.add_output<decl::String>("String");
};
} // namespace blender::nodes
static void fn_node_string_substring_build_multi_function(
blender::nodes::NodeMultiFunctionBuilder &builder)
{
static blender::fn::CustomMF_SI_SI_SI_SO<std::string, int, int, std::string> substring_fn{
"Substring", [](const std::string &str, int a, int b) {
const int len = BLI_strlen_utf8(str.c_str());
const int start = BLI_str_utf8_offset_from_index(str.c_str(), std::clamp(a, 0, len));
const int end = BLI_str_utf8_offset_from_index(str.c_str(), std::clamp(a + b, 0, len));
return str.substr(start, std::max<int>(end - start, 0));
}};
builder.set_matching_fn(&substring_fn);
}
void register_node_type_fn_string_substring()
{
static bNodeType ntype;
fn_node_type_base(&ntype, FN_NODE_STRING_SUBSTRING, "String Substring", NODE_CLASS_CONVERTER, 0);
ntype.declare = blender::nodes::fn_node_string_substring_declare;
ntype.build_multi_function = fn_node_string_substring_build_multi_function;
nodeRegisterType(&ntype);
}
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