X-Git-Url: http://git.salome-platform.org/gitweb/?a=blobdiff_plain;f=src%2FConfig%2FConfig_ModuleReader.cpp;h=9e8549cdb43bd7d7aea303add9f452ed95bf922c;hb=bdbfb368d71ed11cc0391354a7d86c880cd94949;hp=4e67ea46de0b1eb78ebc2edf92038aa7cc40fb0c;hpb=a764a876ed5d1480b2a76f4e12307985bcf96c16;p=modules%2Fshaper.git

diff --git a/src/Config/Config_ModuleReader.cpp b/src/Config/Config_ModuleReader.cpp
index 4e67ea46d..9e8549cdb 100644
--- a/src/Config/Config_ModuleReader.cpp
+++ b/src/Config/Config_ModuleReader.cpp
@@ -1,3 +1,5 @@
+// Copyright (C) 2014-20xx CEA/DEN, EDF R&D
+
 /*
  * Config_ModuleReader.cpp
  *
@@ -5,22 +7,36 @@
  *      Author: sbh
  */
 
+#include <pyconfig.h>
+
 #include <Config_Keywords.h>
 #include <Config_Common.h>
 #include <Config_ModuleReader.h>
 #include <Config_FeatureReader.h>
+#include <Events_InfoMessage.h>
 
 #include <libxml/parser.h>
 #include <libxml/tree.h>
 
-#ifdef _DEBUG
+// Have to be included before std headers
+#include <Python.h>
+
+//Necessary for cerr
 #include <iostream>
-#endif
+#include <algorithm>
 
+#ifdef WIN32
+#include <windows.h>
+#pragma warning(disable : 4996) // for getenv
+#else
+#include <dlfcn.h>
+#endif
 
+std::map<std::string, Config_ModuleReader::PluginType> Config_ModuleReader::myPluginTypes;
+std::set<std::string> Config_ModuleReader::myDependencyModules;
 
 Config_ModuleReader::Config_ModuleReader(const char* theEventGenerated)
-    : Config_XMLReader("plugins.xml"),
+    : Config_XMLReader(PLUGIN_FILE),
       myEventGenerated(theEventGenerated)
 {
 }
@@ -34,7 +50,12 @@ const std::map<std::string, std::string>& Config_ModuleReader::featuresInFiles()
   return myFeaturesInFiles;
 }
 
-/*
+const std::set<std::string>& Config_ModuleReader::modulePluginFiles() const
+{
+  return myPluginFiles;
+}
+
+/*!
  * Get module name from plugins.xml
  * (property "module")
  */
@@ -44,18 +65,37 @@ std::string Config_ModuleReader::getModuleName()
   return getProperty(aRoot, PLUGINS_MODULE);
 }
 
-/*
- *
- */
+
+void Config_ModuleReader::addFeature(const std::string& theFeatureName,
+                                     const std::string& thePluginConfig)
+{
+  if (myFeaturesInFiles.count(theFeatureName)) {
+    std::string anErrorMsg = "Can not register feature '%1' in plugin '%2'."
+      " There is a feature with the same ID.";
+    Events_InfoMessage("Config_ModuleReader", anErrorMsg)
+      .arg(theFeatureName).arg(thePluginConfig).send();
+    return;
+  }
+
+  myFeaturesInFiles[theFeatureName] = thePluginConfig;
+}
+
 void Config_ModuleReader::processNode(xmlNodePtr theNode)
 {
   if (isNode(theNode, NODE_PLUGIN, NULL)) {
+    if (!hasRequiredModules(theNode))
+      return;
     std::string aPluginConf = getProperty(theNode, PLUGIN_CONFIG);
+    if (!aPluginConf.empty())
+      myPluginFiles.insert(aPluginConf);
     std::string aPluginLibrary = getProperty(theNode, PLUGIN_LIBRARY);
-    std::list<std::string> aFeatures = importPlugin(aPluginConf, aPluginLibrary);
+    std::string aPluginScript = getProperty(theNode, PLUGIN_SCRIPT);
+    std::string aPluginName = addPlugin(aPluginLibrary, aPluginScript, aPluginConf);
+
+    std::list<std::string> aFeatures = importPlugin(aPluginName, aPluginConf);
     std::list<std::string>::iterator it = aFeatures.begin();
-    for( ; it != aFeatures.end(); it++ ) {
-      myFeaturesInFiles[*it] = aPluginConf;
+    for (; it != aFeatures.end(); it++) {
+      addFeature(*it, aPluginConf);
     }
   }
 }
@@ -65,14 +105,138 @@ bool Config_ModuleReader::processChildren(xmlNodePtr theNode)
   return isNode(theNode, NODE_PLUGINS, NULL);
 }
 
-std::list<std::string>
-Config_ModuleReader::importPlugin(const std::string& thePluginFile,
-                                  const std::string& thePluginLibrary)
+bool Config_ModuleReader::hasRequiredModules(xmlNodePtr theNode) const
 {
-  Config_FeatureReader aReader = Config_FeatureReader(thePluginFile,
+  std::string aRequiredModule = normalize(getProperty(theNode, PLUGIN_DEPENDENCY));
+  if(aRequiredModule.empty())
+    return true;
+  std::set<std::string>::iterator it = myDependencyModules.begin();
+  for ( ; it != myDependencyModules.end(); it++ ) {
+    if (*it == aRequiredModule) return true;
+  }
+  return false;
+}
+
+std::list<std::string> Config_ModuleReader::importPlugin(const std::string& thePluginLibrary,
+                                                         const std::string& thePluginXmlConf)
+{
+  if (thePluginXmlConf.empty()) {  //probably a third party library
+    loadLibrary(thePluginLibrary);
+    return std::list<std::string>();
+  }
+
+  Config_FeatureReader aReader = Config_FeatureReader(thePluginXmlConf,
                                                       thePluginLibrary,
                                                       myEventGenerated);
   aReader.readAll();
   return aReader.features();
 }
 
+std::string Config_ModuleReader::addPlugin(const std::string& aPluginLibrary,
+                                           const std::string& aPluginScript,
+                                           const std::string& aPluginConf)
+{
+  PluginType aType = Config_ModuleReader::Binary;
+  std::string aPluginName;
+  if (!aPluginLibrary.empty()) {
+    aPluginName = aPluginLibrary;
+    if (aPluginConf.empty()) {
+      aType = Config_ModuleReader::Intrenal;
+    }
+  } else if (!aPluginScript.empty()) {
+    aPluginName = aPluginScript;
+    aType = Config_ModuleReader::Python;
+  }
+  if(!aPluginName.empty()) {
+    myPluginTypes[aPluginName] = aType;
+  }
+  addDependencyModule(aPluginName);
+  return aPluginName;
+}
+
+void Config_ModuleReader::loadPlugin(const std::string& thePluginName)
+{
+  PluginType aType = Config_ModuleReader::Binary;
+  if(myPluginTypes.find(thePluginName) != myPluginTypes.end()) {
+    aType = myPluginTypes.at(thePluginName);
+  }
+  switch (aType) {
+    case Config_ModuleReader::Python:
+      loadScript(thePluginName);
+      break;
+    case Config_ModuleReader::Binary:
+    case Config_ModuleReader::Intrenal:
+    default:
+      loadLibrary(thePluginName);
+      break;
+  }
+}
+
+void Config_ModuleReader::loadScript(const std::string& theFileName, bool theSendErr)
+{
+  /* acquire python thread */
+  PyGILState_STATE gstate = PyGILState_Ensure();
+
+  PyObject* module = PyImport_ImportModule(theFileName.c_str());
+  if (!module) {
+    std::string anErrorMsg = "An error occurred while importing " + theFileName;
+    //Get detailed error message:
+    if (PyErr_Occurred()) {
+      PyObject *pstr, *ptype, *pvalue, *ptraceback;
+      PyErr_Fetch(&ptype, &pvalue, &ptraceback);
+      PyErr_NormalizeException(&ptype, &pvalue, &ptraceback);
+      pstr = PyObject_Str(pvalue);
+      std::string aPyError = std::string(PyString_AsString(pstr));
+      if (!aPyError.empty()) {
+        anErrorMsg += ":\n" + aPyError;
+      }
+      Py_XDECREF(pstr);
+      Py_XDECREF(ptype);
+      Py_XDECREF(pvalue);
+      Py_XDECREF(ptraceback);
+    }
+    if (theSendErr)
+      Events_InfoMessage("Config_ModuleReader", anErrorMsg).send();
+  }
+
+  /* release python thread */
+  PyGILState_Release(gstate);
+}
+
+void Config_ModuleReader::loadLibrary(const std::string& theLibName)
+{
+  std::string aFileName = library(theLibName);
+  if (aFileName.empty())
+    return;
+
+  #ifdef WIN32
+  HINSTANCE aModLib = ::LoadLibrary(aFileName.c_str());
+  #else
+  void* aModLib = dlopen( aFileName.c_str(), RTLD_LAZY | RTLD_GLOBAL );
+  #endif
+  if(!aModLib && theLibName != "DFBrowser") { // don't show error for internal debugging tool
+    std::string anErrorMsg = "Failed to load " + aFileName;
+    #ifdef WIN32
+    DWORD   dwLastError = ::GetLastError();
+    LPSTR messageBuffer = NULL;
+    size_t size = ::FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER |
+                                 FORMAT_MESSAGE_FROM_SYSTEM |
+                                 FORMAT_MESSAGE_IGNORE_INSERTS,
+                                 NULL,
+                                 dwLastError,
+                                 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+                                 (LPSTR)&messageBuffer, 0, NULL);
+    anErrorMsg += ": " +  std::string(messageBuffer, size);
+    #else
+    anErrorMsg += ": " + std::string(dlerror());
+    #endif
+    std::cerr << anErrorMsg << std::endl;
+    Events_InfoMessage("Config_ModuleReader", anErrorMsg).send();
+  }
+}
+
+void Config_ModuleReader::addDependencyModule(const std::string& theModuleName)
+{
+  myDependencyModules.insert(normalize(theModuleName));
+}
+