Mercurial > hg > orthanc

annotate Core/Lua/LuaContext.cpp @ 1616:644c32c07306

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 16 Sep 2015 16:00:50 +0200
parents 31f4adefb88f
children 54bafe0e7e7b
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2015 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 #include "../PrecompiledHeaders.h"
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34 #include "LuaContext.h"
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35
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36 #include "../Logging.h"
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37 #include "../OrthancException.h"
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38
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39 #include <set>
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40 #include <cassert>
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41 #include <boost/lexical_cast.hpp>
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42
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43 extern "C"
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44 {
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45 #include <lualib.h>
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46 #include <lauxlib.h>
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47 }
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48
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49 namespace Orthanc
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50 {
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51 LuaContext& LuaContext::GetLuaContext(lua_State *state)
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52 {
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53 const void* value = GetGlobalVariable(state, "_LuaContext");
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54 assert(value != NULL);
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55
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56 return *const_cast<LuaContext*>(reinterpret_cast<const LuaContext*>(value));
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57 }
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58
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59 int LuaContext::PrintToLog(lua_State *state)
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60 {
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61 LuaContext& that = GetLuaContext(state);
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62
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63 // http://medek.wordpress.com/2009/02/03/wrapping-lua-errors-and-print-function/
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64 int nArgs = lua_gettop(state);
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65 lua_getglobal(state, "tostring");
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66
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67 // Make sure you start at 1 *NOT* 0 for arrays in Lua.
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68 std::string result;
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69
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70 for (int i = 1; i <= nArgs; i++)
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71 {
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72 const char *s;
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73 lua_pushvalue(state, -1);
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74 lua_pushvalue(state, i);
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75 lua_call(state, 1, 1);
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76 s = lua_tostring(state, -1);
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77
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78 if (result.size() > 0)
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79 result.append(", ");
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80
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81 if (s == NULL)
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82 result.append("<No conversion to string>");
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83 else
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84 result.append(s);
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85
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86 lua_pop(state, 1);
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87 }
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88
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89 LOG(WARNING) << "Lua says: " << result;
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90 that.log_.append(result);
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91 that.log_.append("\n");
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92
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93 return 0;
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94 }
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95
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96
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97 int LuaContext::ParseJson(lua_State *state)
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98 {
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99 LuaContext& that = GetLuaContext(state);
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100
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101 int nArgs = lua_gettop(state);
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102 if (nArgs != 1 ||
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103 !lua_isstring(state, 1)) // Password
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104 {
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105 lua_pushnil(state);
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106 return 1;
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107 }
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108
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109 const char* str = lua_tostring(state, 1);
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110
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111 Json::Value value;
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112 Json::Reader reader;
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113 if (reader.parse(str, str + strlen(str), value))
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114 {
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115 that.PushJson(value);
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116 }
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117 else
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118 {
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119 lua_pushnil(state);
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120 }
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121
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122 return 1;
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123 }
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124
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125
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126 int LuaContext::DumpJson(lua_State *state)
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127 {
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128 LuaContext& that = GetLuaContext(state);
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129
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130 int nArgs = lua_gettop(state);
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131 if (nArgs != 1)
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132 {
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133 lua_pushnil(state);
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134 return 1;
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135 }
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136
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137 Json::Value json;
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138 that.GetJson(json, 1);
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139
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140 Json::FastWriter writer;
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141 std::string s = writer.write(json);
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142 lua_pushlstring(state, s.c_str(), s.size());
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143
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144 return 1;
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145 }
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146
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147
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148 int LuaContext::SetHttpCredentials(lua_State *state)
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149 {
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150 LuaContext& that = GetLuaContext(state);
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151
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152 // Check the types of the arguments
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153 int nArgs = lua_gettop(state);
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154 if (nArgs != 2 ||
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155 !lua_isstring(state, 1) || // Username
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156 !lua_isstring(state, 2)) // Password
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157 {
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158 LOG(ERROR) << "Lua: Bad parameters to SetHttpCredentials()";
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159 }
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160 else
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161 {
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162 // Configure the HTTP client
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163 const char* username = lua_tostring(state, 1);
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164 const char* password = lua_tostring(state, 2);
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165 that.httpClient_.SetCredentials(username, password);
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166 }
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167
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168 return 0;
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169 }
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170
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171
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172 bool LuaContext::AnswerHttpQuery(lua_State* state)
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173 {
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174 std::string str;
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175
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176 try
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177 {
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178 httpClient_.Apply(str);
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179 }
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180 catch (OrthancException&)
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181 {
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182 return false;
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183 }
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184
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185 // Return the result of the HTTP request
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186 lua_pushlstring(state, str.c_str(), str.size());
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187
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188 return true;
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189 }
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190
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191
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192 int LuaContext::CallHttpGet(lua_State *state)
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193 {
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194 LuaContext& that = GetLuaContext(state);
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195
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196 // Check the types of the arguments
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197 int nArgs = lua_gettop(state);
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198 if (nArgs != 1 || !lua_isstring(state, 1)) // URL
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199 {
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200 LOG(ERROR) << "Lua: Bad parameters to HttpGet()";
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201 lua_pushnil(state);
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202 return 1;
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203 }
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204
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205 // Configure the HTTP client class
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206 const char* url = lua_tostring(state, 1);
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207 that.httpClient_.SetMethod(HttpMethod_Get);
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208 that.httpClient_.SetUrl(url);
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209
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210 // Do the HTTP GET request
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211 if (!that.AnswerHttpQuery(state))
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212 {
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213 LOG(ERROR) << "Lua: Error in HttpGet() for URL " << url;
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214 lua_pushnil(state);
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215 }
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216
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217 return 1;
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218 }
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219
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220
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221 int LuaContext::CallHttpPostOrPut(lua_State *state,
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222 HttpMethod method)
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223 {
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224 LuaContext& that = GetLuaContext(state);
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225
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226 // Check the types of the arguments
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227 int nArgs = lua_gettop(state);
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228 if ((nArgs != 1 && nArgs != 2) ||
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229 !lua_isstring(state, 1) || // URL
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230 (nArgs >= 2 && !lua_isstring(state, 2))) // Body data
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231 {
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232 LOG(ERROR) << "Lua: Bad parameters to HttpPost() or HttpPut()";
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233 lua_pushnil(state);
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234 return 1;
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235 }
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236
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237 // Configure the HTTP client class
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238 const char* url = lua_tostring(state, 1);
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239 that.httpClient_.SetMethod(method);
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240 that.httpClient_.SetUrl(url);
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241
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242 if (nArgs >= 2)
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243 {
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244 that.httpClient_.SetBody(lua_tostring(state, 2));
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245 }
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246 else
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247 {
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248 that.httpClient_.GetBody().clear();
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249 }
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250
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251 // Do the HTTP POST/PUT request
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252 if (!that.AnswerHttpQuery(state))
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253 {
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254 LOG(ERROR) << "Lua: Error in HttpPost() or HttpPut() for URL " << url;
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255 lua_pushnil(state);
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256 }
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257
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258 return 1;
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259 }
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260
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261
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262 int LuaContext::CallHttpPost(lua_State *state)
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263 {
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264 return CallHttpPostOrPut(state, HttpMethod_Post);
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265 }
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266
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267
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268 int LuaContext::CallHttpPut(lua_State *state)
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269 {
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270 return CallHttpPostOrPut(state, HttpMethod_Put);
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271 }
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272
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273
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274 int LuaContext::CallHttpDelete(lua_State *state)
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275 {
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276 LuaContext& that = GetLuaContext(state);
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277
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278 // Check the types of the arguments
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279 int nArgs = lua_gettop(state);
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280 if (nArgs != 1 || !lua_isstring(state, 1)) // URL
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281 {
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282 LOG(ERROR) << "Lua: Bad parameters to HttpDelete()";
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283 lua_pushnil(state);
1052
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284 return 1;
cc4ff680e2a0 http requests in lua
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285 }
cc4ff680e2a0 http requests in lua
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diff changeset
286
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287 // Configure the HTTP client class
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288 const char* url = lua_tostring(state, 1);
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289 that.httpClient_.SetMethod(HttpMethod_Delete);
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290 that.httpClient_.SetUrl(url);
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291
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292 // Do the HTTP DELETE request
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293 std::string s;
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294 if (!that.httpClient_.Apply(s))
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295 {
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296 LOG(ERROR) << "Lua: Error in HttpDelete() for URL " << url;
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297 lua_pushnil(state);
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298 }
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299 else
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300 {
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301 lua_pushstring(state, "SUCCESS");
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302 }
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303
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304 return 1;
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305 }
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306
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307
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diff changeset
308 void LuaContext::PushJson(const Json::Value& value)
92f4bf2c5d73 HTTP GET in Lua
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309 {
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310 if (value.isString())
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311 {
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312 const std::string s = value.asString();
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313 lua_pushlstring(lua_, s.c_str(), s.size());
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314 }
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315 else if (value.isDouble())
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diff changeset
316 {
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317 lua_pushnumber(lua_, value.asDouble());
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318 }
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319 else if (value.isInt())
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
320 {
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diff changeset
321 lua_pushinteger(lua_, value.asInt());
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
322 }
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323 else if (value.isUInt())
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
324 {
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
325 lua_pushinteger(lua_, value.asUInt());
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diff changeset
326 }
92f4bf2c5d73 HTTP GET in Lua
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327 else if (value.isBool())
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
328 {
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
329 lua_pushboolean(lua_, value.asBool());
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
330 }
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
331 else if (value.isNull())
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
332 {
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
333 lua_pushnil(lua_);
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
334 }
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
335 else if (value.isArray())
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
336 {
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
337 lua_newtable(lua_);
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
338
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
339 // http://lua-users.org/wiki/SimpleLuaApiExample
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
340 for (Json::Value::ArrayIndex i = 0; i < value.size(); i++)
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
341 {
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
342 // Push the table index (note the "+1" because of Lua conventions)
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
343 lua_pushnumber(lua_, i + 1);
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
344
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
345 // Push the value of the cell
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
346 PushJson(value[i]);
92f4bf2c5d73 HTTP GET in Lua
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parents: 1002
diff changeset
347
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
348 // Stores the pair in the table
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
349 lua_rawset(lua_, -3);
92f4bf2c5d73 HTTP GET in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1002
diff changeset
350 }
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
351 }
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
352 else if (value.isObject())
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
353 {
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
354 lua_newtable(lua_);
92f4bf2c5d73 HTTP GET in Lua
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parents: 1002
diff changeset
355
92f4bf2c5d73 HTTP GET in Lua
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parents: 1002
diff changeset
356 Json::Value::Members members = value.getMemberNames();
92f4bf2c5d73 HTTP GET in Lua
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parents: 1002
diff changeset
357
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
358 for (Json::Value::Members::const_iterator
92f4bf2c5d73 HTTP GET in Lua
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parents: 1002
diff changeset
359 it = members.begin(); it != members.end(); ++it)
92f4bf2c5d73 HTTP GET in Lua
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parents: 1002
diff changeset
360 {
92f4bf2c5d73 HTTP GET in Lua
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parents: 1002
diff changeset
361 // Push the index of the cell
1465
905842836ad4 sample Lua script to write DICOM series to disk
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1448
diff changeset
362 lua_pushlstring(lua_, it->c_str(), it->size());
1051
92f4bf2c5d73 HTTP GET in Lua
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parents: 1002
diff changeset
363
92f4bf2c5d73 HTTP GET in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1002
diff changeset
364 // Push the value of the cell
92f4bf2c5d73 HTTP GET in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1002
diff changeset
365 PushJson(value[*it]);
92f4bf2c5d73 HTTP GET in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1002
diff changeset
366
92f4bf2c5d73 HTTP GET in Lua
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parents: 1002
diff changeset
367 // Stores the pair in the table
92f4bf2c5d73 HTTP GET in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1002
diff changeset
368 lua_rawset(lua_, -3);
92f4bf2c5d73 HTTP GET in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1002
diff changeset
369 }
92f4bf2c5d73 HTTP GET in Lua
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parents: 1002
diff changeset
370 }
92f4bf2c5d73 HTTP GET in Lua
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parents: 1002
diff changeset
371 else
92f4bf2c5d73 HTTP GET in Lua
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parents: 1002
diff changeset
372 {
1583
9ea3d082b064 got rid of custom exceptions
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parents: 1545
diff changeset
373 throw OrthancException(ErrorCode_JsonToLuaTable);
1051
92f4bf2c5d73 HTTP GET in Lua
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diff changeset
374 }
92f4bf2c5d73 HTTP GET in Lua
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parents: 1002
diff changeset
375 }
92f4bf2c5d73 HTTP GET in Lua
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parents: 1002
diff changeset
376
386
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
377
1448
3f7722179467 refactoring: GetJson in Lua
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parents: 1447
diff changeset
378 void LuaContext::GetJson(Json::Value& result,
3f7722179467 refactoring: GetJson in Lua
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parents: 1447
diff changeset
379 int top)
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
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parents: 1438
diff changeset
380 {
1448
3f7722179467 refactoring: GetJson in Lua
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parents: 1447
diff changeset
381 if (lua_istable(lua_, top))
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parents: 1438
diff changeset
382 {
1448
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diff changeset
383 Json::Value tmp = Json::objectValue;
3f7722179467 refactoring: GetJson in Lua
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diff changeset
384 bool isArray = true;
3f7722179467 refactoring: GetJson in Lua
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diff changeset
385 size_t size = 0;
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
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parents: 1438
diff changeset
386
1448
3f7722179467 refactoring: GetJson in Lua
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parents: 1447
diff changeset
387 // Code adapted from: http://stackoverflow.com/a/6142700/881731
3f7722179467 refactoring: GetJson in Lua
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parents: 1447
diff changeset
388
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
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parents: 1438
diff changeset
389 // Push another reference to the table on top of the stack (so we know
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
390 // where it is, and this function can work for negative, positive and
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
391 // pseudo indices
1448
3f7722179467 refactoring: GetJson in Lua
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diff changeset
392 lua_pushvalue(lua_, top);
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
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parents: 1438
diff changeset
393 // stack now contains: -1 => table
1448
3f7722179467 refactoring: GetJson in Lua
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parents: 1447
diff changeset
394 lua_pushnil(lua_);
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
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parents: 1438
diff changeset
395 // stack now contains: -1 => nil; -2 => table
1448
3f7722179467 refactoring: GetJson in Lua
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parents: 1447
diff changeset
396 while (lua_next(lua_, -2))
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
397 {
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
398 // stack now contains: -1 => value; -2 => key; -3 => table
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
399 // copy the key so that lua_tostring does not modify the original
1448
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parents: 1447
diff changeset
400 lua_pushvalue(lua_, -2);
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
401 // stack now contains: -1 => key; -2 => value; -3 => key; -4 => table
1448
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
402 std::string key(lua_tostring(lua_, -1));
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
403 Json::Value v;
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
404 GetJson(v, -2);
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
405
1448
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
406 tmp[key] = v;
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
407
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
408 size += 1;
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
409 try
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
410 {
1448
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
411 if (boost::lexical_cast<size_t>(key) != size)
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
412 {
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
413 isArray = false;
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
414 }
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
415 }
1448
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
416 catch (boost::bad_lexical_cast&)
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
417 {
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
418 isArray = false;
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
419 }
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
420
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
421 // pop value + copy of key, leaving original key
1448
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
422 lua_pop(lua_, 2);
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
423 // stack now contains: -1 => key; -2 => table
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
424 }
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
425 // stack now contains: -1 => table (when lua_next returns 0 it pops the key
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
426 // but does not push anything.)
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
427 // Pop table
1448
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
428 lua_pop(lua_, 1);
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
429
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
430 // Stack is now the same as it was on entry to this function
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
431
1448
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
432 if (isArray)
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
433 {
1448
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
434 result = Json::arrayValue;
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
435 for (size_t i = 0; i < size; i++)
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
436 {
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
437 result.append(tmp[boost::lexical_cast<std::string>(i + 1)]);
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
438 }
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
439 }
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
440 else
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
441 {
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
442 result = tmp;
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
443 }
1448
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
444 }
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
445 else if (lua_isnil(lua_, top))
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
446 {
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
447 result = Json::nullValue;
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
448 }
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
449 else if (lua_isboolean(lua_, top))
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
450 {
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
451 result = lua_toboolean(lua_, top) ? true : false;
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
452 }
1448
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
453 else if (lua_isnumber(lua_, top))
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
454 {
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
455 // Convert to "int" if truncation does not loose precision
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
456 double value = static_cast<double>(lua_tonumber(lua_, top));
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
457 int truncated = static_cast<int>(value);
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
458
1448
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
459 if (std::abs(value - static_cast<double>(truncated)) <=
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
460 std::numeric_limits<double>::epsilon())
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
461 {
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
462 result = truncated;
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
463 }
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
464 else
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
465 {
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
466 result = value;
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
467 }
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
468 }
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
469 else if (lua_isstring(lua_, top))
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
470 {
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
471 // Caution: The "lua_isstring()" case must be the last, since
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
472 // Lua can convert most types to strings by default.
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
473 result = std::string(lua_tostring(lua_, top));
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
474 }
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
475 else
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
476 {
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
477 LOG(WARNING) << "Unsupported Lua type when returning Json";
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
478 result = Json::nullValue;
3f7722179467 refactoring: GetJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1447
diff changeset
479 }
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
480 }
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
481
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
482
386
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
483 LuaContext::LuaContext()
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
484 {
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
485 lua_ = luaL_newstate();
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
486 if (!lua_)
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
487 {
1583
9ea3d082b064 got rid of custom exceptions
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1545
diff changeset
488 throw OrthancException(ErrorCode_CannotCreateLua);
386
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
489 }
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
490
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
491 luaL_openlibs(lua_);
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
492 lua_register(lua_, "print", PrintToLog);
1447
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
493 lua_register(lua_, "ParseJson", ParseJson);
5ba7471780ae refactoring: HttpToolbox, DumpJson in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1438
diff changeset
494 lua_register(lua_, "DumpJson", DumpJson);
1051
92f4bf2c5d73 HTTP GET in Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1002
diff changeset
495 lua_register(lua_, "HttpGet", CallHttpGet);
1052
cc4ff680e2a0 http requests in lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1051
diff changeset
496 lua_register(lua_, "HttpPost", CallHttpPost);
cc4ff680e2a0 http requests in lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1051
diff changeset
497 lua_register(lua_, "HttpPut", CallHttpPut);
cc4ff680e2a0 http requests in lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1051
diff changeset
498 lua_register(lua_, "HttpDelete", CallHttpDelete);
1055
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
499 lua_register(lua_, "SetHttpCredentials", SetHttpCredentials);
1437
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
500
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
501 SetGlobalVariable("_LuaContext", this);
386
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
502 }
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
503
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
504
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
505 LuaContext::~LuaContext()
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
506 {
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
507 lua_close(lua_);
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
508 }
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
509
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
510
1055
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
511 void LuaContext::ExecuteInternal(std::string* output,
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
512 const std::string& command)
386
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
513 {
418
b79bf2f4ab2e execution of lua through REST
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 397
diff changeset
514 log_.clear();
386
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
515 int error = (luaL_loadbuffer(lua_, command.c_str(), command.size(), "line") ||
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
516 lua_pcall(lua_, 0, 0, 0));
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
517
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
518 if (error)
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
519 {
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
520 assert(lua_gettop(lua_) >= 1);
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
521
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
522 std::string description(lua_tostring(lua_, -1));
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
523 lua_pop(lua_, 1); /* pop error message from the stack */
1055
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
524 LOG(ERROR) << "Error while executing Lua script: " << description;
1583
9ea3d082b064 got rid of custom exceptions
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1545
diff changeset
525 throw OrthancException(ErrorCode_CannotExecuteLua);
386
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
526 }
418
b79bf2f4ab2e execution of lua through REST
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 397
diff changeset
527
b79bf2f4ab2e execution of lua through REST
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 397
diff changeset
528 if (output != NULL)
b79bf2f4ab2e execution of lua through REST
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 397
diff changeset
529 {
b79bf2f4ab2e execution of lua through REST
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 397
diff changeset
530 *output = log_;
b79bf2f4ab2e execution of lua through REST
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 397
diff changeset
531 }
386
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
532 }
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
533
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
534
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
535 void LuaContext::Execute(EmbeddedResources::FileResourceId resource)
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
536 {
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
537 std::string command;
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
538 EmbeddedResources::GetFileResource(command, resource);
1055
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
539 ExecuteInternal(NULL, command);
386
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
540 }
397
941ea46e9e26 lua filter of new instances
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 386
diff changeset
541
941ea46e9e26 lua filter of new instances
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 386
diff changeset
542
941ea46e9e26 lua filter of new instances
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 386
diff changeset
543 bool LuaContext::IsExistingFunction(const char* name)
941ea46e9e26 lua filter of new instances
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 386
diff changeset
544 {
941ea46e9e26 lua filter of new instances
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 386
diff changeset
545 lua_settop(lua_, 0);
941ea46e9e26 lua filter of new instances
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 386
diff changeset
546 lua_getglobal(lua_, name);
941ea46e9e26 lua filter of new instances
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 386
diff changeset
547 return lua_type(lua_, -1) == LUA_TFUNCTION;
941ea46e9e26 lua filter of new instances
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 386
diff changeset
548 }
1055
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
549
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
550
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
551 void LuaContext::Execute(Json::Value& output,
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
552 const std::string& command)
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
553 {
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
554 std::string s;
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
555 ExecuteInternal(&s, command);
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
556
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
557 Json::Reader reader;
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
558 if (!reader.parse(s, output))
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
559 {
1596
f2e3d030ea59 BadJson error code
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1583
diff changeset
560 throw OrthancException(ErrorCode_BadJson);
1055
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
561 }
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
562 }
6f923d52a46c call Web services from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1052
diff changeset
563
1437
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
564
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
565 void LuaContext::RegisterFunction(const char* name,
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
566 lua_CFunction func)
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
567 {
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
568 lua_register(lua_, name, func);
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
569 }
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
570
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
571
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
572 void LuaContext::SetGlobalVariable(const char* name,
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
573 void* value)
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
574 {
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
575 lua_pushlightuserdata(lua_, value);
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
576 lua_setglobal(lua_, name);
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
577 }
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
578
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
579
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
580 const void* LuaContext::GetGlobalVariable(lua_State* state,
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
581 const char* name)
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
582 {
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
583 lua_getglobal(state, name);
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
584 assert(lua_type(state, -1) == LUA_TLIGHTUSERDATA);
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
585 const void* value = lua_topointer(state, -1);
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
586 lua_pop(state, 1);
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
587 return value;
02f5a3f5c0a0 access to the REST API from Lua
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1288
diff changeset
588 }
386
7dec4f3c922c lua wrapper
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
589 }