Hi,
osgDB::listAllAvailablePlugins() which is for example used by osgconv
--formats lists all available plugins by iterating through *all* files
of the plugin directory.
When building osg on windows in the plugin directory beside the shared
library there are additional files like debug and manifest libraries,
which are returned by osgDB::listAllAvailablePlugins() too and produces
error messages about non loadable plugins.
I fixed this problem in osgDB::listAllAvailablePlugins() by checking the
filename extension.
FileNameList osgDB::listAllAvailablePlugins()
{
FileNameList pluginFiles;
#if _WIN32
std::string pluginExtension = "dll";
#endif
std::string pluginDirectoryName =
std::string("osgPlugins-")+std::string(osgGetVersion());
std::string fullPath = osgDB::findLibraryFile(pluginDirectoryName);
if (!fullPath.empty())
{
osgDB::DirectoryContents contents = getDirectoryContents(fullPath);
for(DirectoryContents::iterator itr = contents.begin();
itr != contents.end();
++itr)
{
std::string::size_type pos = itr->find("osgdb_");
if (pos==std::string::npos)
{
continue;
}
#if _WIN32
std::string ext = getFileExtension(*itr);
if (ext != pluginExtension)
{
continue;
}
#endif
pluginFiles.push_back(fullPath + std::string("/")+*itr);
}
}
return pluginFiles;
}
The fix is currently limited to win32, although it may be that the same
problem exists on other platforms. In that case the second #if WIN32
could be extended to that platform and at the place of the first
conditions a valid shared library file extension for the related
platform could be added.
The related file containing the fix is added.
Regards
Ralf
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2008 Robert Osfield
*
* This application is open source and may be redistributed and/or modified
* freely and without restriction, both in commericial and non commericial
applications,
* as long as this copyright notice is maintained.
*
* This application is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
#include <osgDB/FileUtils>
#include <osgDB/FileNameUtils>
#include <osg/Version>
#include <osgDB/PluginQuery>
using namespace osgDB;
FileNameList osgDB::listAllAvailablePlugins()
{
FileNameList pluginFiles;
#if _WIN32
std::string pluginExtension = "dll";
#endif
std::string pluginDirectoryName =
std::string("osgPlugins-")+std::string(osgGetVersion());
std::string fullPath = osgDB::findLibraryFile(pluginDirectoryName);
if (!fullPath.empty())
{
osgDB::DirectoryContents contents = getDirectoryContents(fullPath);
for(DirectoryContents::iterator itr = contents.begin();
itr != contents.end();
++itr)
{
std::string::size_type pos = itr->find("osgdb_");
if (pos==std::string::npos)
{
continue;
}
#if _WIN32
std::string ext = getFileExtension(*itr);
if (ext != pluginExtension)
{
continue;
}
#endif
pluginFiles.push_back(fullPath + std::string("/")+*itr);
}
}
return pluginFiles;
}
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();
for(Registry::ReaderWriterList::const_iterator itr = rwList.begin();
itr != rwList.end();
++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();
rwi->protocols = rw->supportedProtocols();
rwi->extensions = rw->supportedExtensions();
rwi->options = rw->supportedOptions();
infoList.push_back(rwi.get());
}
}
osgDB::Registry::instance()->closeLibrary(fileName);
return true;
}
else
{
return false;
}
}
static std::string padwithspaces(const std::string& str, unsigned int padLength)
{
std::string newStr(str);
while(newStr.length()<padLength) newStr.push_back(' ');
return newStr;
}
bool osgDB::outputPluginDetails(std::ostream& out, const std::string& fileName)
{
osgDB::ReaderWriterInfoList infoList;
if (osgDB::queryPlugin(fileName, infoList))
{
out<<"Plugin "<<fileName<<std::endl;
out<<"{"<<std::endl;
for(osgDB::ReaderWriterInfoList::iterator rwi_itr = infoList.begin();
rwi_itr != infoList.end();
++rwi_itr)
{
osgDB::ReaderWriterInfo& info = *(*rwi_itr);
out<<" ReaderWriter : "<<info.description<<std::endl;
out<<" {"<<std::endl;
unsigned int longestOptionLength = 0;
osgDB::ReaderWriter::FormatDescriptionMap::iterator fdm_itr;
for(fdm_itr = info.protocols.begin();
fdm_itr != info.protocols.end();
++fdm_itr)
{
if (fdm_itr->first.length()>longestOptionLength)
longestOptionLength = fdm_itr->first.length();
}
for(fdm_itr = info.extensions.begin();
fdm_itr != info.extensions.end();
++fdm_itr)
{
if (fdm_itr->first.length()>longestOptionLength)
longestOptionLength = fdm_itr->first.length();
}
for(fdm_itr = info.options.begin();
fdm_itr != info.options.end();
++fdm_itr)
{
if (fdm_itr->first.length()>longestOptionLength)
longestOptionLength = fdm_itr->first.length();
}
unsigned int padLength = longestOptionLength+4;
for(fdm_itr = info.protocols.begin();
fdm_itr != info.protocols.end();
++fdm_itr)
{
out<<" protocol : "<<padwithspaces(fdm_itr->first,
padLength)<<fdm_itr->second<<std::endl;
}
for(fdm_itr = info.extensions.begin();
fdm_itr != info.extensions.end();
++fdm_itr)
{
out<<" extensions : ."<<padwithspaces(fdm_itr->first,
padLength-1)<<fdm_itr->second<<std::endl;
}
for(fdm_itr = info.options.begin();
fdm_itr != info.options.end();
++fdm_itr)
{
out<<" options : "<<padwithspaces(fdm_itr->first,
padLength)<<fdm_itr->second<<std::endl;
}
out<<" }"<<std::endl;
}
out<<"}"<<std::endl<<std::endl;
return true;
}
else
{
out<<"Plugin "<<fileName<<" not found."<<std::endl;
return false;
}
}
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