/usr/include/resource_retriever/retriever.h is in libresource-retriever-dev 1.12.2-1+b2.
This file is owned by root:root, with mode 0o644.
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* Copyright (C) 2009, Willow Garage, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the names of Stanford University or Willow Garage, Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef RESOURCE_RETRIEVER_RETRIEVER_H
#define RESOURCE_RETRIEVER_RETRIEVER_H
#include <stdint.h>
#include <string>
#include <boost/shared_array.hpp>
#include <stdexcept>
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)
{}
};
/**
* \brief A combination of a pointer to data in memory along with the data's size.
*/
struct MemoryResource
{
MemoryResource()
: size(0)
{}
boost::shared_array<uint8_t> data;
uint32_t size;
};
/**
* \brief Retrieves files from from a url. Caches a CURL handle so multiple accesses to a single url
* will keep connections open.
*/
class Retriever
{
public:
Retriever();
~Retriever();
/**
* \brief Get a file and store it in memory
* \param url The url to retrieve. package://package/file will be turned into the correct file:// invocation
* \return The file, loaded into memory
* \throws resource_retriever::Exception if anything goes wrong.
*/
MemoryResource get(const std::string& url);
private:
Retriever(const Retriever & ret) = delete;
CURL* curl_handle_;
};
} // namespace resource_retriever
#endif // RESOURCE_RETRIEVER_RETRIEVER_H
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