Program Listing for File retriever.hpp

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// Copyright 2009, Willow Garage, Inc. All rights reserved.
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#ifndef RESOURCE_RETRIEVER__RETRIEVER_HPP_
#define RESOURCE_RETRIEVER__RETRIEVER_HPP_

#include <cstdint>
#include <memory>
#include <stdexcept>
#include <string>

#include "resource_retriever/visibility_control.hpp"

typedef void CURL;

namespace resource_retriever
{
class Exception : public std::runtime_error
{
public:
  Exception(const std::string & file, const std::string & error_msg)
  : std::runtime_error("Error retrieving file [" + file + "]: " + error_msg)
  {
  }
};

struct MemoryResource
{
  MemoryResource()
  : size(0)
  {
  }

  std::shared_ptr<uint8_t> data;
  size_t size;
};

class RESOURCE_RETRIEVER_PUBLIC Retriever
{
public:
  Retriever();

  ~Retriever();

  MemoryResource get(const std::string & url);

private:
  Retriever(const Retriever & ret) = delete;

  CURL * curl_handle_;
};

}  //  namespace resource_retriever

#endif  //  RESOURCE_RETRIEVER__RETRIEVER_HPP_