Moved PluginQuery from osgconv into osgDB

applications/osgconv/CMakeLists.txt

@@ -3,12 +3,10 @@
 
 SET(TARGET_SRC
     OrientationConverter.cpp 
-    PluginQuery.cpp
     osgconv.cpp
 )
 SET(TARGET_H
     OrientationConverter.h
-    PluginQuery.h
 )
 
 #### end var setup  ###

applications/osgconv/osgconv.cpp

@@ -17,6 +17,7 @@
 #include <osgDB/WriteFile>
 #include <osgDB/FileNameUtils>
 #include <osgDB/ReaderWriter>
+#include <osgDB/PluginQuery>
 
 #include <osgUtil/Optimizer>
 #include <osgUtil/Simplifier>
@@ -28,7 +29,6 @@
 #include <iostream>
 
 #include "OrientationConverter.h"
-#include "PluginQuery.h"
 
 typedef std::vector<std::string> FileNameList;
 

include/osgDB/PluginQuery

@@ -12,6 +12,8 @@
 #ifndef PLUGINQUERY_H
 #define PLUGINQUERY_H
 
+#include <osgDB/Export>
+
 #include <list>
 
 namespace osgDB
@@ -19,8 +21,7 @@ namespace osgDB
 
 typedef std::list<std::string> FileNameList;
 
-
-FileNameList listAllAvailablePlugins();
+FileNameList OSGDB_EXPORT listAllAvailablePlugins();
 
 class ReaderWriterInfo : public osg::Referenced
 {
@@ -35,9 +36,9 @@ class ReaderWriterInfo : public osg::Referenced
 
 typedef std::list< osg::ref_ptr<ReaderWriterInfo> > ReaderWriterInfoList;
 
-bool queryPlugin(const std::string& fileName, ReaderWriterInfoList& infoList);
+bool OSGDB_EXPORT queryPlugin(const std::string& fileName, ReaderWriterInfoList& infoList);
 
-bool outputPluginDetails(std::ostream& out, const std::string& fileName);
+bool OSGDB_EXPORT outputPluginDetails(std::ostream& out, const std::string& fileName);
 
 }
 

src/osgDB/CMakeLists.txt

@@ -24,6 +24,7 @@ SET(LIB_PUBLIC_HEADERS
     ${HEADER_PATH}/Input
     ${HEADER_PATH}/Output
     ${HEADER_PATH}/ParameterOutput
+    ${HEADER_PATH}/PluginQuery
     ${HEADER_PATH}/ReaderWriter
     ${HEADER_PATH}/ReadFile
     ${HEADER_PATH}/Registry
@@ -50,8 +51,9 @@ ADD_LIBRARY(${LIB_NAME}
     ImagePager.cpp
     Input.cpp
     Output.cpp
-    ReadFile.cpp
+    PluginQuery.cpp
     ReaderWriter.cpp
+    ReadFile.cpp
     Registry.cpp
     SharedStateManager.cpp
     Version.cpp

src/osgDB/PluginQuery.cpp

@@ -12,7 +12,7 @@
 #include <osgDB/FileUtils>
 #include <osg/Version>
 
-#include "PluginQuery.h"
+#include <osgDB/PluginQuery>
 
 using namespace osgDB;
 
@@ -43,6 +43,18 @@ FileNameList osgDB::listAllAvailablePlugins()
 
 bool osgDB::queryPlugin(const std::string& fileName, ReaderWriterInfoList& infoList)
 {
+    typedef std::set<const ReaderWriter*> ReaderWriterSet;
+    ReaderWriterSet previouslyLoadedReaderWriters;
+
+    const Registry::ReaderWriterList& rwList = osgDB::Registry::instance()->getReaderWriterList();
+    for(Registry::ReaderWriterList::const_iterator itr = rwList.begin();
+        itr != rwList.end();
+        ++itr)
+    {
+        const ReaderWriter* rw = itr->get();
+        previouslyLoadedReaderWriters.insert(rw);
+    }
+
     if (osgDB::Registry::instance()->loadLibrary(fileName))
     {
         const Registry::ReaderWriterList& rwList = osgDB::Registry::instance()->getReaderWriterList();
@@ -51,6 +63,9 @@ bool osgDB::queryPlugin(const std::string& fileName, ReaderWriterInfoList& infoL
             ++itr)
         {
             const ReaderWriter* rw = itr->get();
+            
+            if (previouslyLoadedReaderWriters.count(rw)==0)
+            {
                 osg::ref_ptr<ReaderWriterInfo> rwi = new ReaderWriterInfo;
                 rwi->plugin = fileName;
                 rwi->description = rw->className();
@@ -60,6 +75,7 @@ bool osgDB::queryPlugin(const std::string& fileName, ReaderWriterInfoList& infoL
 
                 infoList.push_back(rwi.get());
             }
+        }
 
         osgDB::Registry::instance()->closeLibrary(fileName);
         return true;