text: // Copyright 2021, OpenTelemetry Authors
  //
  // Licensed 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 CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
  #pragma once
  
  #include "opentelemetry/nostd/string_view.h"
  
  OPENTELEMETRY_BEGIN_NAMESPACE
  namespace common
  {
  
  class StringUtil
  {
  public:
    static nostd::string_view Trim(nostd::string_view str, size_t left, size_t right)
    {
      while (str[static_cast<std::size_t>(left)] == ' ' && left <= right)
      {
        left++;
      }
      while (str[static_cast<std::size_t>(right)] == ' ' && left <= right)
      {
        right--;
      }
      return str.substr(left, 1 + right - left);
    }
  };
  
  }  // namespace common
  
  OPENTELEMETRY_END_NAMESPACE
  