f939ea731e
Introduced a new callback osgDB::FindFileCallback that overrides the default behavior of findDataFile/findLibraryFile. Introduced support for assigning ReaderWriter::Options directory to PagedLOD. Introduced new osgDB::FileLocationCallback for assistancing the DatabasePager to know when a file is hosted on a local or remote file system.
86 lines
3.1 KiB
C++
86 lines
3.1 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#include <osgDB/FileCache>
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#include <osgDB/FileUtils>
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#include <osgDB/FileNameUtils>
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#include <osgDB/ReadFile>
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#include <osgDB/WriteFile>
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using namespace osgDB;
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FileCache::FileCache(const std::string& path):
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_fileCachePath(path)
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{
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osg::notify(osg::INFO)<<"Constructed FileCache : "<<path<<std::endl;
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}
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FileCache::~FileCache()
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{
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osg::notify(osg::INFO)<<"Destructed FileCache "<<std::endl;
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}
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bool FileCache::isFileAppropriateForFileCache(const std::string& originalFileName) const
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{
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return osgDB::containsServerAddress(originalFileName);
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}
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std::string FileCache::createCacheFileName(const std::string& originalFileName) const
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{
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std::string cacheFileName = _fileCachePath + "/" +
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osgDB::getServerAddress(originalFileName) + "/" +
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osgDB::getServerFileName(originalFileName);
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osg::notify(osg::INFO)<<"FileCache::createCacheFileName("<<originalFileName<<") = "<<cacheFileName<<std::endl;
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return cacheFileName;
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}
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bool FileCache::existsInCache(const std::string& originalFileName) const
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{
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return osgDB::fileExists(createCacheFileName(originalFileName));
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}
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ReaderWriter::ReadResult FileCache::readNode(const std::string& originalFileName, const osgDB::Options* options, bool buildKdTreeIfRequired) const
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{
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std::string cacheFileName = createCacheFileName(originalFileName);
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if (!cacheFileName.empty() && osgDB::fileExists(cacheFileName))
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{
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osg::notify(osg::INFO)<<"FileCache::readNodeFromCache("<<originalFileName<<") as "<<cacheFileName<<std::endl;
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return osgDB::Registry::instance()->readNode(cacheFileName, options, buildKdTreeIfRequired);
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}
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else
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{
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return 0;
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}
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}
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ReaderWriter::WriteResult FileCache::writeNode(const osg::Node& node, const std::string& originalFileName, const osgDB::Options* options) const
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{
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std::string cacheFileName = createCacheFileName(originalFileName);
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if (!cacheFileName.empty())
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{
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std::string path = osgDB::getFilePath(cacheFileName);
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if (!osgDB::fileExists(path) && !osgDB::makeDirectory(path))
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{
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osg::notify(osg::NOTICE)<<"Could not create cache directory: "<<path<<std::endl;
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return ReaderWriter::WriteResult::ERROR_IN_WRITING_FILE;
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}
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osg::notify(osg::INFO)<<"FileCache::writeNodeToCache("<<originalFileName<<") as "<<cacheFileName<<std::endl;
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return osgDB::Registry::instance()->writeNode(node, cacheFileName, options);
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}
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return ReaderWriter::WriteResult::FILE_NOT_HANDLED;
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}
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