FGFS-4.1/OpenSceneGraph
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Added preliminary file cache support. Enabled by setting the OSG_FILE_CACHE variable.

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This commit is contained in:
Robert Osfield
2008-03-21 18:35:29 +00:00
parent c762eeee0c
commit 6e7a1608df
1 changed files with 51 additions and 3 deletions
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54
src/osgPlugins/curl/ReaderWriterCURL.cpp
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@@ -10,6 +10,7 @@
*/
#include <osgDB/FileUtils>
#include <osgDB/ReadFile>
#include <osgDB/WriteFile>
#include <osgDB/Registry>
@@ -144,6 +145,22 @@ class ReaderWriterCURL : public osgDB::ReaderWriter
osg::notify(osg::NOTICE)<<"Error: No ReaderWriter for file "<<fileName<<std::endl;
return ReadResult::FILE_NOT_HANDLED;
}
const char* fileCachePath = getenv("OSG_FILE_CACHE");
std::string cacheFileName;
if (fileCachePath)
{
cacheFileName = std::string(fileCachePath) + "/" +
osgDB::getServerAddress(fileName) + "/" +
osgDB::getServerFileName(fileName);
}
if (fileCachePath &&osgDB::fileExists(cacheFileName))
{
osg::notify(osg::NOTICE)<<"Reading cache file "<<cacheFileName<<std::endl;
return osgDB::Registry::instance()->readObject(cacheFileName,options);
}
std::stringstream buffer;
@@ -157,16 +174,47 @@ class ReaderWriterCURL : public osgDB::ReaderWriter
if (res==0)
{
osg::ref_ptr<Options> local_opt = const_cast<Options*>(options);
if (!local_opt) local_opt = new Options;
local_opt->getDatabasePathList().push_front(osgDB::getFilePath(fileName));
ReadResult result = readFile(objectType, reader, buffer, local_opt.get() );
ReadResult readResult = readFile(objectType, reader, buffer, local_opt.get() );
local_opt->getDatabasePathList().pop_front();
return result;
if (fileCachePath && readResult.validObject())
{
osg::notify(osg::NOTICE)<<"Writing cache file "<<cacheFileName<<std::endl;
std::string filePath = osgDB::getFilePath(cacheFileName);
if (!osgDB::fileExists(filePath))
{
osg::notify(osg::NOTICE)<<"Creating directory "<<filePath<<std::endl;
if (osgDB::makeDirectory(filePath))
{
osg::notify(osg::NOTICE)<<" Created directory"<<std::endl;
}
else
{
osg::notify(osg::NOTICE)<<" Failed"<<std::endl;
}
}
switch(objectType)
{
case(OBJECT): osgDB::writeObjectFile( *(readResult.getObject()), cacheFileName ); break;
case(IMAGE): osgDB::writeImageFile( *(readResult.getImage()), cacheFileName ); break;
case(HEIGHTFIELD): osgDB::writeHeightFieldFile( *(readResult.getHeightField()), cacheFileName ); break;
case(NODE): osgDB::writeNodeFile( *(readResult.getNode()), cacheFileName ); break;
default: break;
}
}
return readResult;
}
else
{