get_unique_attribute_name.h

/*
 * Copyright 2026 Adobe. All rights reserved.
 * This file is licensed to you under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. You may obtain a copy
 * of the License at http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under
 * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
 * OF ANY KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
#pragma once
 
#include <lagrange/Logger.h>
#include <lagrange/SurfaceMesh.h>
#include <lagrange/utils/Error.h>
 
#include <string_view>
 
namespace lagrange::internal {

template <typename Scalar, typename Index>
std::string get_unique_attribute_name(const SurfaceMesh<Scalar, Index>& mesh, std::string_view name)
{
    if (!mesh.has_attribute(name)) {
        return std::string(name);
    } else {
        std::string new_name;
        for (int cnt = 0; cnt < 1000; ++cnt) {
            new_name = fmt::format("{}.{}", name, cnt);
            if (!mesh.has_attribute(new_name)) {
                logger().warn("Attribute '{}' already exists. Using '{}' instead.", name, new_name);
                return new_name;
            }
        }
        throw Error(fmt::format("Could not assign a unique attribute name for: {}", name));
    }
}
 
} // namespace lagrange::internal