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1783
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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1900
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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1783
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4 * Department, University Hospital of Liege, Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU General Public License as
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8 * published by the Free Software Foundation, either version 3 of the
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9 * License, or (at your option) any later version.
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10 *
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11 * In addition, as a special exception, the copyright holders of this
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12 * program give permission to link the code of its release with the
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13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
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14 * that use the same license as the "OpenSSL" library), and distribute
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15 * the linked executables. You must obey the GNU General Public License
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16 * in all respects for all of the code used other than "OpenSSL". If you
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17 * modify file(s) with this exception, you may extend this exception to
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18 * your version of the file(s), but you are not obligated to do so. If
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19 * you do not wish to do so, delete this exception statement from your
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20 * version. If you delete this exception statement from all source files
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21 * in the program, then also delete it here.
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22 *
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23 * This program is distributed in the hope that it will be useful, but
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24 * WITHOUT ANY WARRANTY; without even the implied warranty of
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25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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26 * General Public License for more details.
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27 *
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28 * You should have received a copy of the GNU General Public License
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29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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30 **/
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31
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32 #pragma once
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33
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34 #include <memory>
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35 #include <boost/noncopyable.hpp>
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36 #include <map>
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37 #include <list>
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38 #include <string>
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39 #include <vector>
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40 #include <stdint.h>
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41
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42
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43 namespace Orthanc
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44 {
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45 class HttpContentNegociation : public boost::noncopyable
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46 {
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47 public:
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48 typedef std::map<std::string, std::string> HttpHeaders;
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49
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50 class IHandler : public boost::noncopyable
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51 {
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52 public:
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53 virtual ~IHandler()
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54 {
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55 }
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56
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57 virtual void Handle(const std::string& type,
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58 const std::string& subtype) = 0;
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59 };
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60
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61 private:
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62 struct Handler
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63 {
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64 std::string type_;
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65 std::string subtype_;
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66 IHandler& handler_;
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67
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68 Handler(const std::string& type,
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69 const std::string& subtype,
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70 IHandler& handler);
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71
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72 bool IsMatch(const std::string& type,
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73 const std::string& subtype) const;
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74
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75 void Call() const
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76 {
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77 handler_.Handle(type_, subtype_);
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78 }
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79 };
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80
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81
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82 struct Reference;
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83
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84 typedef std::vector<std::string> Tokens;
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85 typedef std::list<Handler> Handlers;
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86
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87 Handlers handlers_;
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88
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89
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90 static bool SplitPair(std::string& first /* out */,
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91 std::string& second /* out */,
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92 const std::string& source,
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93 char separator);
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94
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95 static float GetQuality(const Tokens& parameters);
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96
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97 static void SelectBestMatch(std::auto_ptr<Reference>& best,
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98 const Handler& handler,
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99 const std::string& type,
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100 const std::string& subtype,
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101 float quality);
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102
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103 public:
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104 void Register(const std::string& mime,
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105 IHandler& handler);
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106
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107 bool Apply(const HttpHeaders& headers);
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108
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109 bool Apply(const std::string& accept);
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110 };
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111 }
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