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annotate Core/Lua/LuaContext.h @ 2237:403d92d8df83

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 16 Dec 2016 14:45:40 +0100
parents 3dd44baebc36
children a3a65de1840f
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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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
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33 #pragma once
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34
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35 #if !defined(ORTHANC_ENABLE_LUA)
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36 # error The macro ORTHANC_ENABLE_LUA must be defined
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37 #endif
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38
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39 #if ORTHANC_ENABLE_LUA == 0
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40 # error The Lua support is disabled, cannot include this file
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41 #endif
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42
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43 #include "../HttpClient.h"
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44
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45 extern "C"
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46 {
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47 #include <lua.h>
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48 }
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49
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50 #include <EmbeddedResources.h>
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51 #include <boost/noncopyable.hpp>
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52
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53 namespace Orthanc
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54 {
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55 class LuaContext : public boost::noncopyable
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56 {
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57 private:
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58 friend class LuaFunctionCall;
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59
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60 lua_State *lua_;
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61 std::string log_;
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62 HttpClient httpClient_;
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63
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64 static int PrintToLog(lua_State *state);
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65 static int ParseJson(lua_State *state);
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66 static int DumpJson(lua_State *state);
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67
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68 static int SetHttpCredentials(lua_State *state);
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69
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70 static int CallHttpPostOrPut(lua_State *state,
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71 HttpMethod method);
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72 static int CallHttpGet(lua_State *state);
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73 static int CallHttpPost(lua_State *state);
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74 static int CallHttpPut(lua_State *state);
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75 static int CallHttpDelete(lua_State *state);
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76
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77 bool AnswerHttpQuery(lua_State* state);
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78
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79 void ExecuteInternal(std::string* output,
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80 const std::string& command);
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81
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82 void GetJson(Json::Value& result,
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83 int top,
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84 bool keepStrings);
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85
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86 public:
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87 LuaContext();
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88
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89 ~LuaContext();
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90
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91 void Execute(const std::string& command)
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92 {
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93 ExecuteInternal(NULL, command);
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94 }
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95
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96 void Execute(std::string& output,
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97 const std::string& command)
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98 {
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99 ExecuteInternal(&output, command);
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100 }
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101
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102 void Execute(Json::Value& output,
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103 const std::string& command);
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104
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105 void Execute(EmbeddedResources::FileResourceId resource);
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106
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107 bool IsExistingFunction(const char* name);
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108
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109 void SetHttpCredentials(const char* username,
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110 const char* password)
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111 {
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112 httpClient_.SetCredentials(username, password);
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113 }
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114
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115 void RegisterFunction(const char* name,
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116 lua_CFunction func);
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117
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118 void SetGlobalVariable(const char* name,
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119 void* value);
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120
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121 static LuaContext& GetLuaContext(lua_State *state);
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122
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123 static const void* GetGlobalVariable(lua_State* state,
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124 const char* name);
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125
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126 void PushJson(const Json::Value& value);
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127 };
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128 }