retriever.h
Go to the documentation of this file.00001 /* 00002 * Copyright (C) 2009, Willow Garage, Inc. 00003 * 00004 * Redistribution and use in source and binary forms, with or without 00005 * modification, are permitted provided that the following conditions are met: 00006 * * Redistributions of source code must retain the above copyright notice, 00007 * this list of conditions and the following disclaimer. 00008 * * Redistributions in binary form must reproduce the above copyright 00009 * notice, this list of conditions and the following disclaimer in the 00010 * documentation and/or other materials provided with the distribution. 00011 * * Neither the names of Stanford University or Willow Garage, Inc. nor the names of its 00012 * contributors may be used to endorse or promote products derived from 00013 * this software without specific prior written permission. 00014 * 00015 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00016 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00017 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00018 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 00019 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 00020 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 00021 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00022 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00023 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00024 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00025 * POSSIBILITY OF SUCH DAMAGE. 00026 */ 00027 00028 #ifndef RESOURCE_RETRIEVER_RETRIEVER_H 00029 #define RESOURCE_RETRIEVER_RETRIEVER_H 00030 00031 #include <stdint.h> 00032 #include <string> 00033 #include <boost/shared_array.hpp> 00034 #include <stdexcept> 00035 00036 typedef void CURL; 00037 00038 namespace resource_retriever 00039 { 00040 00041 class Exception : public std::runtime_error 00042 { 00043 public: 00044 Exception(const std::string& file, const std::string& error_msg) 00045 : std::runtime_error("Error retrieving file [" + file + "]: " + error_msg) 00046 {} 00047 }; 00048 00052 struct MemoryResource 00053 { 00054 MemoryResource() 00055 : size(0) 00056 {} 00057 00058 boost::shared_array<uint8_t> data; 00059 uint32_t size; 00060 }; 00061 00066 class Retriever 00067 { 00068 public: 00069 Retriever(); 00070 ~Retriever(); 00071 00078 MemoryResource get(const std::string& url); 00079 00080 private: 00081 CURL* curl_handle_; 00082 }; 00083 00084 } // namespace resource_retriever 00085 00086 #endif // RESOURCE_RETRIEVER_RETRIEVER_H