Mercurial > hg > orthanc
annotate Core/Lua/LuaFunctionCall.cpp @ 2110:5b818f677dd6
fix in BagOfTasksProcessor
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 26 Oct 2016 15:36:39 +0200 |
parents | 45c4387a379c |
children | 3eefb84ac0bd |
rev | line source |
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386 | 1 /** |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
1900 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
386 | 5 * |
6 * This program is free software: you can redistribute it and/or | |
7 * modify it under the terms of the GNU General Public License as | |
8 * published by the Free Software Foundation, either version 3 of the | |
9 * License, or (at your option) any later version. | |
10 * | |
11 * In addition, as a special exception, the copyright holders of this | |
12 * program give permission to link the code of its release with the | |
13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
14 * that use the same license as the "OpenSSL" library), and distribute | |
15 * the linked executables. You must obey the GNU General Public License | |
16 * in all respects for all of the code used other than "OpenSSL". If you | |
17 * modify file(s) with this exception, you may extend this exception to | |
18 * your version of the file(s), but you are not obligated to do so. If | |
19 * you do not wish to do so, delete this exception statement from your | |
20 * version. If you delete this exception statement from all source files | |
21 * in the program, then also delete it here. | |
22 * | |
23 * This program is distributed in the hope that it will be useful, but | |
24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
26 * General Public License for more details. | |
27 * | |
28 * You should have received a copy of the GNU General Public License | |
29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
30 **/ | |
31 | |
32 | |
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33 #include "../PrecompiledHeaders.h" |
386 | 34 #include "LuaFunctionCall.h" |
35 | |
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36 #include "../OrthancException.h" |
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37 #include "../Logging.h" |
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38 |
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39 #include <cassert> |
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40 #include <stdio.h> |
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41 #include <boost/lexical_cast.hpp> |
386 | 42 |
43 namespace Orthanc | |
44 { | |
45 void LuaFunctionCall::CheckAlreadyExecuted() | |
46 { | |
47 if (isExecuted_) | |
48 { | |
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49 throw OrthancException(ErrorCode_LuaAlreadyExecuted); |
386 | 50 } |
51 } | |
52 | |
53 LuaFunctionCall::LuaFunctionCall(LuaContext& context, | |
54 const char* functionName) : | |
55 context_(context), | |
56 isExecuted_(false) | |
57 { | |
58 // Clear the stack to fulfill the invariant | |
59 lua_settop(context_.lua_, 0); | |
60 lua_getglobal(context_.lua_, functionName); | |
61 } | |
62 | |
63 void LuaFunctionCall::PushString(const std::string& value) | |
64 { | |
65 CheckAlreadyExecuted(); | |
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66 lua_pushlstring(context_.lua_, value.c_str(), value.size()); |
386 | 67 } |
68 | |
69 void LuaFunctionCall::PushBoolean(bool value) | |
70 { | |
71 CheckAlreadyExecuted(); | |
72 lua_pushboolean(context_.lua_, value); | |
73 } | |
74 | |
75 void LuaFunctionCall::PushInteger(int value) | |
76 { | |
77 CheckAlreadyExecuted(); | |
78 lua_pushinteger(context_.lua_, value); | |
79 } | |
80 | |
81 void LuaFunctionCall::PushDouble(double value) | |
82 { | |
83 CheckAlreadyExecuted(); | |
84 lua_pushnumber(context_.lua_, value); | |
85 } | |
86 | |
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87 void LuaFunctionCall::PushJson(const Json::Value& value) |
386 | 88 { |
89 CheckAlreadyExecuted(); | |
1051 | 90 context_.PushJson(value); |
386 | 91 } |
92 | |
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93 void LuaFunctionCall::ExecuteInternal(int numOutputs) |
386 | 94 { |
95 CheckAlreadyExecuted(); | |
96 | |
97 assert(lua_gettop(context_.lua_) >= 1); | |
98 int nargs = lua_gettop(context_.lua_) - 1; | |
99 int error = lua_pcall(context_.lua_, nargs, numOutputs, 0); | |
100 | |
101 if (error) | |
102 { | |
103 assert(lua_gettop(context_.lua_) >= 1); | |
104 | |
105 std::string description(lua_tostring(context_.lua_, -1)); | |
106 lua_pop(context_.lua_, 1); /* pop error message from the stack */ | |
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107 LOG(ERROR) << description; |
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108 |
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109 throw OrthancException(ErrorCode_CannotExecuteLua); |
386 | 110 } |
111 | |
112 if (lua_gettop(context_.lua_) < numOutputs) | |
113 { | |
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114 throw OrthancException(ErrorCode_LuaBadOutput); |
386 | 115 } |
116 | |
117 isExecuted_ = true; | |
118 } | |
119 | |
120 bool LuaFunctionCall::ExecutePredicate() | |
121 { | |
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122 ExecuteInternal(1); |
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123 |
386 | 124 if (!lua_isboolean(context_.lua_, 1)) |
125 { | |
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126 throw OrthancException(ErrorCode_NotLuaPredicate); |
386 | 127 } |
128 | |
129 return lua_toboolean(context_.lua_, 1) != 0; | |
130 } | |
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131 |
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132 |
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133 void LuaFunctionCall::ExecuteToJson(Json::Value& result, |
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134 bool keepStrings) |
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135 { |
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136 ExecuteInternal(1); |
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137 context_.GetJson(result, lua_gettop(context_.lua_), keepStrings); |
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138 } |
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139 |
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140 |
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141 void LuaFunctionCall::ExecuteToString(std::string& result) |
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142 { |
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143 ExecuteInternal(1); |
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144 |
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145 int top = lua_gettop(context_.lua_); |
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146 if (lua_isstring(context_.lua_, top)) |
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147 { |
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148 result = lua_tostring(context_.lua_, top); |
1010 | 149 } |
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150 else |
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151 { |
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152 throw OrthancException(ErrorCode_LuaReturnsNoString); |
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153 } |
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154 } |
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155 |
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156 |
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157 void LuaFunctionCall::PushStringMap(const std::map<std::string, std::string>& value) |
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158 { |
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159 Json::Value json = Json::objectValue; |
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160 |
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161 for (std::map<std::string, std::string>::const_iterator |
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162 it = value.begin(); it != value.end(); ++it) |
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163 { |
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164 json[it->first] = it->second; |
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165 } |
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166 |
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167 PushJson(json); |
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168 } |
386 | 169 } |